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[libvirt] Per-VM access control
by Jan Kasprzak 16 Feb '09

16 Feb '09

Hello, is it possible to run libvirt as a "hosting-like" environment? we would like to provide virtual machines for our users, but we would like them to be able to reset/reboot/poweroff only their own VMs, connect to the serial console of their own VMs only, and even maybe connect to the graphical console of their own VMs. Is it possible with libvirt, and without giving them shell access to the hosting machine? For the serial console, I thought about creating a ssh-only account with hardcoded "virsh console <their_machine_name>" command, but "virsh console" can be escaped from using ^], so this is not secure - this way they would be able to get access to other VMs as well. Thanks, -Yenya -- | Jan "Yenya" Kasprzak <kas at {fi.muni.cz - work | yenya.net - private}> | | GPG: ID 1024/D3498839 Fingerprint 0D99A7FB206605D7 8B35FCDE05B18A5E | | http://www.fi.muni.cz/~kas/ Journal: http://www.fi.muni.cz/~kas/blog/ | >> If you find yourself arguing with Alan Cox, you’re _probably_ wrong. << >> --James Morris in "How and Why You Should Become a Kernel Hacker" <<

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[libvirt] Compilation Errors
by Russell 16 Feb '09

16 Feb '09

I'm trying to compile libvirt 0.6.0 on Gentoo, but keep encountering the following error: network_driver.c:72: error: expected specifier-qualifier-list before 'brControl' network_driver.c: In function 'networkFindActiveConfigs': <snip - just a bunch of 'struct network_driver' has no member named * > network_driver.c:1382: error: 'struct network_driver' has no member named 'networkConfigDir' network_driver.c:1384: error: 'struct network_driver' has no member named 'networkAutostartDir' network_driver.c:1390: error: 'struct network_driver' has no member named 'networkAutostartDir' network_driver.c:1391: error: 'struct network_driver' has no member named 'networkAutostartDir' make[3]: *** [network_driver.lo] Error 1 make[3]: Leaving directory `/home/russell/libvirt/libvirt-0.6.0/src' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/russell/libvirt/libvirt-0.6.0/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/russell/libvirt/libvirt-0.6.0' make: *** [all] Error 2 Every error following the first one refers to networkConfigDir, networkAutostartDir, or logDir, all listed after brControl in the definition of network_driver. What looks to me like the same error has been reported against 0.5.1 here (I haven't tried it myself): http://bugs.gentoo.org/show_bug.cgi?id=254568 My configuration options: ./configure --prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --with-avahi --without-storage-iscsi --without-storage-lvm --without-lxc --with-hal --without-openvz --without-storage-disk --without-sasl --without-selinux --without-uml --without-xen --without-qemu --without-devkit --without-polkit --with-remote --disable-iptables-lokkit --localstatedir=/var --with-remote-pid-file=/var/run/libvirtd.pid --build=i686-pc-linux-gnu If other info would help resolve this I'd be happy to try and provide it. Thanks, -- Russell Haering System Administrator OSU Open Source Lab

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[libvirt] [PATCH] Allow off-line removal of devices via xend
by john.levon＠sun.com 15 Feb '09

15 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233765613 28800 # Node ID bda41ea0cbbdea409447686c30b7afb10b9cae85 # Parent e6b17082b9b9440ce14ad76bd2f4c003ae2404db Allow off-line removal of devices via xend We must avoid xenstore if the domain isn't running. For disks, this works in all xend versions; for NICs, however, this requires a change in netif.py to allow matching by MAC address. Preferring the device ID but falling back to the device ref works best with all versions of xend. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/xend_internal.c b/src/xend_internal.c --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -92,11 +92,17 @@ xenDaemonFormatSxprNet(virConnectPtr con int xendConfigVersion, int isAttach); static int -virDomainXMLDevID(virDomainPtr domain, - virDomainDeviceDefPtr dev, - char *class, - char *ref, - int ref_len); +virDomainDevRef(virDomainPtr domain, + virDomainDeviceDefPtr dev, + char *class, + char *ref, + int ref_len); +static int +virDomainDevID(virDomainPtr domain, + int type, + const char *ref, + char *devid, + int devid_len); #endif #define virXendError(conn, code, fmt...) \ @@ -3857,7 +3863,7 @@ xenDaemonAttachDevice(virDomainPtr domai virDomainDeviceDefPtr dev = NULL; virDomainDefPtr def = NULL; virBuffer buf = VIR_BUFFER_INITIALIZER; - char class[8], ref[80]; + char class[8], ref[80], devid[80]; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { virXendError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG, @@ -3913,15 +3919,24 @@ xenDaemonAttachDevice(virDomainPtr domai sexpr = virBufferContentAndReset(&buf); - if (virDomainXMLDevID(domain, dev, class, ref, sizeof(ref))) { + devid[0] = '\0'; + + if (virDomainDevRef(domain, dev, class, ref, sizeof(ref)) == -1) + goto cleanup; + + if (domain->id > 0 && + virDomainDevID(domain, dev->type, ref, devid, sizeof(devid)) != -1) { + VIR_DEBUG("device_configure(ref = %s, devid = %s): %s", + ref, devid, sexpr); + /* device exists, attempt to modify it */ + ret = xend_op(domain->conn, domain->name, "op", "device_configure", + "config", sexpr, "dev", devid, NULL); + } else { + VIR_DEBUG("device_create(ref = %s, devid = %s): %s", + ref, devid, sexpr); /* device doesn't exist, define it */ ret = xend_op(domain->conn, domain->name, "op", "device_create", "config", sexpr, NULL); - } - else { - /* device exists, attempt to modify it */ - ret = xend_op(domain->conn, domain->name, "op", "device_configure", - "config", sexpr, "dev", ref, NULL); } cleanup: @@ -3944,7 +3959,7 @@ xenDaemonDetachDevice(virDomainPtr domai xenDaemonDetachDevice(virDomainPtr domain, const char *xml) { xenUnifiedPrivatePtr priv; - char class[8], ref[80]; + char class[8], ref[80], devid[80]; virDomainDeviceDefPtr dev = NULL; virDomainDefPtr def = NULL; int ret = -1; @@ -3975,11 +3990,40 @@ xenDaemonDetachDevice(virDomainPtr domai def, xml, VIR_DOMAIN_XML_INACTIVE))) goto cleanup; - if (virDomainXMLDevID(domain, dev, class, ref, sizeof(ref))) + if (dev->type != VIR_DOMAIN_DEVICE_NET && + dev->type != VIR_DOMAIN_DEVICE_DISK) { + virXendError(domain->conn, VIR_ERR_INTERNAL_ERROR, + _("can't detach device of type %d"), dev->type); goto cleanup; + } + + /* + * First acquire a static reference to the device (MAC address or + * destination disk). We'll use this if the domain isn't running, + * otherwise we'll rely upon the XenStore devid. + */ + + if (virDomainDevRef(domain, dev, class, ref, sizeof(ref)) == -1) { + virXendError(domain->conn, VIR_ERR_INTERNAL_ERROR, + _("can't detach device: not found ")); + goto cleanup; + } + + if (domain->id >= 0) { + if (virDomainDevID(domain, dev->type, ref, devid, sizeof(devid))) + virXendError(domain->conn, VIR_ERR_INTERNAL_ERROR, + _("can't detach device: not found ")); + goto cleanup; + } else { + strncpy(devid, ref, 80); + } + + VIR_DEBUG("device_destroy(type = %s, ref = %s, devid = %s)", + class, ref, devid); ret = xend_op(domain->conn, domain->name, "op", "device_destroy", - "type", class, "dev", ref, "force", "0", "rm_cfg", "1", NULL); + "type", class, "dev", devid, "force", "0", + "rm_cfg", "1", NULL); cleanup: virDomainDefFree(def); @@ -5501,12 +5545,48 @@ error: /** - * virDomainXMLDevID: + * virDomainXMLDevRef: * @domain: pointer to domain object * @dev: pointer to device config object * @class: Xen device class "vbd" or "vif" (OUT) * @ref: Xen device reference (OUT) * + * Return the class (vbd/vif) and reference (MAC address / disk + * destination) of the given device. + * + * Returns 0 in case of success, -1 in case of failure. + */ +static int +virDomainDevRef(virDomainPtr domain, + virDomainDeviceDefPtr dev, + char *class, + char *ref, + int ref_len) +{ + if (dev->type == VIR_DOMAIN_DEVICE_DISK) { + if (dev->data.disk->dst == NULL) + return -1; + strncpy(ref, dev->data.disk->dst, ref_len); + strcpy(class, "vbd"); + } else if (dev->type == VIR_DOMAIN_DEVICE_NET) { + virFormatMacAddr(dev->data.net->mac, ref); + strcpy(class, "vif"); + } else { + virXendError(NULL, VIR_ERR_NO_SUPPORT, + _("no support for device type %d"), dev->type); + return -1; + } + + return 0; +} + +/** + * virDomainXMLDevID: + * @domain: pointer to domain object + * @class: either 'vbd' or 'vif' + * @ref: Xen device reference + * @devid: Xen device ID (OUT) + * * Set class according to XML root, and: * - if disk, copy in ref the target name from description * - if network, get MAC address from description, scan XenStore and @@ -5515,54 +5595,41 @@ error: * Returns 0 in case of success, -1 in case of failure. */ static int -virDomainXMLDevID(virDomainPtr domain, - virDomainDeviceDefPtr dev, - char *class, - char *ref, - int ref_len) +virDomainDevID(virDomainPtr domain, + int type, + const char *ref, + char *devid, + int devid_len) { xenUnifiedPrivatePtr priv = domain->conn->privateData; - char *xref; - - if (dev->type == VIR_DOMAIN_DEVICE_DISK) { - strcpy(class, "vbd"); - if (dev->data.disk->dst == NULL) - return -1; - xenUnifiedLock(priv); - xref = xenStoreDomainGetDiskID(domain->conn, domain->id, - dev->data.disk->dst); - xenUnifiedUnlock(priv); - if (xref == NULL) - return -1; - - strncpy(ref, xref, ref_len); - free(xref); - ref[ref_len - 1] = '\0'; - } else if (dev->type == VIR_DOMAIN_DEVICE_NET) { - char mac[30]; - virDomainNetDefPtr def = dev->data.net; - snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x", - def->mac[0], def->mac[1], def->mac[2], - def->mac[3], def->mac[4], def->mac[5]); - - strcpy(class, "vif"); - - xenUnifiedLock(priv); - xref = xenStoreDomainGetNetworkID(domain->conn, domain->id, - mac); - xenUnifiedUnlock(priv); - if (xref == NULL) - return -1; - - strncpy(ref, xref, ref_len); - free(xref); - ref[ref_len - 1] = '\0'; + char *id = NULL; + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INTERNAL_ERROR, + _("devid not available for shutdown domain")); + return -1; + } + + xenUnifiedLock(priv); + + if (type == VIR_DOMAIN_DEVICE_DISK) { + id = xenStoreDomainGetDiskID(domain->conn, domain->id, ref); + + } else if (type == VIR_DOMAIN_DEVICE_NET) { + id = xenStoreDomainGetNetworkID(domain->conn, domain->id, ref); } else { virXendError(NULL, VIR_ERR_NO_SUPPORT, - "%s", _("hotplug of device type not supported")); + _("no support for device type %d"), type); + } + + xenUnifiedUnlock(priv); + + if (id == NULL) return -1; - } - + + strncpy(devid, id, devid_len); + VIR_FREE(id); + devid[devid_len - 1] = '\0'; return 0; }

7 13

[libvirt] Libvirt /proc/cpuinfo processing fails on Linux/Sparc
by Richard W.M. Jones 14 Feb '09

14 Feb '09

Below is what /proc/cpuinfo looks like on an Ultrasparc T1 running Linux. I haven't looked into it in detail yet, but the report from Dennis Gilmore is that this breaks every libvirt command. Presumably we are parsing /proc/cpuinfo at libvirt startup ... (Initially reported by Dennis Gilmore) Rich. cpu : UltraSparc T1 (Niagara) fpu : UltraSparc T1 integrated FPU prom : OBP 4.29.0.a 2008/09/15 11:59 type : sun4v ncpus probed : 32 ncpus active : 32 D$ parity tl1 : 0 I$ parity tl1 : 0 Cpu0ClkTck : 000000003b9aca00 Cpu1ClkTck : 000000003b9aca00 Cpu2ClkTck : 000000003b9aca00 Cpu3ClkTck : 000000003b9aca00 Cpu4ClkTck : 000000003b9aca00 Cpu5ClkTck : 000000003b9aca00 Cpu6ClkTck : 000000003b9aca00 Cpu7ClkTck : 000000003b9aca00 Cpu8ClkTck : 000000003b9aca00 Cpu9ClkTck : 000000003b9aca00 Cpu10ClkTck : 000000003b9aca00 Cpu11ClkTck : 000000003b9aca00 Cpu12ClkTck : 000000003b9aca00 Cpu13ClkTck : 000000003b9aca00 Cpu14ClkTck : 000000003b9aca00 Cpu15ClkTck : 000000003b9aca00 Cpu16ClkTck : 000000003b9aca00 Cpu17ClkTck : 000000003b9aca00 Cpu18ClkTck : 000000003b9aca00 Cpu19ClkTck : 000000003b9aca00 Cpu20ClkTck : 000000003b9aca00 Cpu21ClkTck : 000000003b9aca00 Cpu22ClkTck : 000000003b9aca00 Cpu23ClkTck : 000000003b9aca00 Cpu24ClkTck : 000000003b9aca00 Cpu25ClkTck : 000000003b9aca00 Cpu26ClkTck : 000000003b9aca00 Cpu27ClkTck : 000000003b9aca00 Cpu28ClkTck : 000000003b9aca00 Cpu29ClkTck : 000000003b9aca00 Cpu30ClkTck : 000000003b9aca00 Cpu31ClkTck : 000000003b9aca00 MMU Type : Hypervisor (sun4v) State: CPU0: online CPU1: online CPU2: online CPU3: online CPU4: online CPU5: online CPU6: online CPU7: online CPU8: online CPU9: online CPU10: online CPU11: online CPU12: online CPU13: online CPU14: online CPU15: online CPU16: online CPU17: online CPU18: online CPU19: online CPU20: online CPU21: online CPU22: online CPU23: online CPU24: online CPU25: online CPU26: online CPU27: online CPU28: online CPU29: online CPU30: online CPU31: online -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://et.redhat.com/~rjones/virt-top

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[libvirt] Libvirt for RHEL4 update4
by Gavin Gong 13 Feb '09

13 Feb '09

Hi Guys, We are eagerly trying to deploy libvirt on a production environment based on RHEL4 U4, but unfortunately it seems that for RHEL this API is only available for version5, we can't find any libvirt packages for RHEL4 U4, can you give us some advise for this situation? Thanks. Gavin Gavin Gong 3rd Line Engineer - Server/Database Technology DD: +44(0) 207 517 6581 M: +44(0) 7982 132 869 T: +44(0) 845 459 1111 F: +44(0) 207 517 6501 E: gavin.gong(a)controlcircle.com <mailto:gavin.gong@controlcircle.com> Data Storage Network Security Moorfoot House, 221 Marsh Wall Managed Connectivity Dedicated Hosting London E14 9FH Managed Services http://www.controlcircle.com <http://www.controlcircle.com/> Click here <http://www.controlcircle.com/ProductsNServices/Email-Privacy-and-confid entiality-statement> to view our privacy & confidentiality statement P Please don't print this e-mail unless you really need to.

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[libvirt] [PATCH] Fix migration for 3.3 xend
by John Levon 13 Feb '09

13 Feb '09

# HG changeset patch # User John Levon <john.levon(a)sun.com> # Date 1234535031 28800 # Node ID 3b0d2047df2c53ff2994d2bff4b1123110626ee2 # Parent 0c02b55855c7a3bfa1135887ffb1763ef29179e5 Fix migration for 3.3 xend xend grew a couple of new options for the migration method. As they're ignored on older xend versions, always pass them. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/xend_internal.c b/src/xend_internal.c --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -4292,6 +4292,8 @@ xenDaemonDomainMigratePerform (virDomain "destination", hostname, "live", live, "port", port, + "node", "-1", + "ssl", "0", "resource", "0", /* required, xend ignores it */ NULL); VIR_FREE (hostname);

3 2

[libvirt] [PATCH] libvirt.spec patch to fix some rpmlint warnings/errors
by Richard W.M. Jones 13 Feb '09

13 Feb '09

With this patch we remove some of the easier rpmlint warnings and errors. It is by no means rpmlint clean after applying this patch, but the remaining warnings and errors can be ignored. FWIW this is for the libvirt merge review: https://bugzilla.redhat.com/show_bug.cgi?id=226055 I'm not sure about the patch to libvirt.init.in, but rpmlint is quite insistent that we need this, or else we shouldn't start libvirtd by default. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v

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[libvirt] [PATCH 0/3] Fix aliasing rules warnings with gcc-4.4
by Mark McLoughlin 13 Feb '09

13 Feb '09

Hi, It seems gcc's strict aliasing rules got stricter with gcc-4.4. The basic rule is that two pointers of different types can't be used to reference the same address in memory. One exception is using a char* and another is when different types are members of a union. I've used unions to fix all the warnings I see with current CVS HEAD. I can't say I like the solution all that much, so if anyone has better ideas ... Cheers, Mark.

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[libvirt] [PATCH] avoid two test failures induced by today's error-reporting changes
by Jim Meyering 13 Feb '09

13 Feb '09

I'm applying these fixes to avoid "make check" failures: >From f41517a4250db0961482e097813eb39da5bea963 Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Mon, 9 Feb 2009 16:25:36 +0100 Subject: [PATCH] avoid two test failures induced by today's error-reporting changes * tests/cpuset: Adjust expected diagnostic to match new behavior. * tests/undefine: Likewise. --- tests/cpuset | 4 ++-- tests/undefine | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/tests/cpuset b/tests/cpuset index 75303e3..eeb0ee2 100755 --- a/tests/cpuset +++ b/tests/cpuset @@ -1,7 +1,7 @@ #!/bin/sh # ensure that defining with an invalid vCPU cpuset elicits a diagnostic -# Copyright (C) 2008 Free Software Foundation, Inc. +# Copyright (C) 2008-2009 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -36,8 +36,8 @@ sed "s/vcpu>/vcpu cpuset='aaa'>/" xml > xml-invalid || fail=1 # Require failure and a diagnostic. virsh --connect test:///default define xml-invalid > out 2>&1 && fail=1 cat <<\EOF > exp || fail=1 -libvir: Domain Config error : failed Xen syscall topology cpuset syntax error error: Failed to define domain from xml-invalid +error: failed Xen syscall topology cpuset syntax error EOF compare exp out || fail=1 diff --git a/tests/undefine b/tests/undefine index 48e8356..fafdae7 100755 --- a/tests/undefine +++ b/tests/undefine @@ -1,7 +1,7 @@ #!/bin/sh # exercise virsh's "undefine" command -# Copyright (C) 2008 Free Software Foundation, Inc. +# Copyright (C) 2008-2009 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -29,8 +29,8 @@ fail=0 virsh -q -c test:///default undefine test > out 2>&1 test $? = 1 || fail=1 cat <<\EOF > exp || fail=1 -libvir: Test error : internal error Domain 'test' is still running error: Failed to undefine domain test +error: internal error Domain 'test' is still running EOF compare exp out || fail=1 -- 1.6.2.rc0.173.g5e148

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[libvirt] Domain comment/description string?
by Jan Kasprzak 13 Feb '09

13 Feb '09

Hello, I use KVM+qemu for testing various distributions and playing with different versions of software. Now I would like to migrate my virtual machines to libvirt. One of the problems is that I would like to have some sort of comment or description of the machine, which would be displayed in "virsh list" or in virt-manager together with the machine hostname. Example: <name>rei</name> <comment>Fedora rawhide/32bit</comment> or <name>konata</name> <comment>Gentoo x86_64 with KDE 4</comment> Does the libvirt XML format support something like this? Embedding comment inside the <name>...</name> tag does not work. Does libvirt support something like that? Thanks, -Yenya -- | Jan "Yenya" Kasprzak <kas at {fi.muni.cz - work | yenya.net - private}> | | GPG: ID 1024/D3498839 Fingerprint 0D99A7FB206605D7 8B35FCDE05B18A5E | | http://www.fi.muni.cz/~kas/ Journal: http://www.fi.muni.cz/~kas/blog/ | >> If you find yourself arguing with Alan Cox, you’re _probably_ wrong. << >> --James Morris in "How and Why You Should Become a Kernel Hacker" <<

1 0

[libvirt] libvirtd and LVM snapshots
by Nick Moffitt 12 Feb '09

12 Feb '09

I'm working on an existing system that creates, manages, and destroys Xen guests on a pool of host systems, and I use LVM copy-on-write snapshots to keep creation rapid. http://libvirt.org/storage.html describes logical volume pools, for which you simply supply the name of a volume group and it allocates volumes from that. By my reading, it appears one can even provide a list of block devices and they will be carved into extents and pooled into a VG for you. Is there any interface to libvirtd that allows it to create volumes that are snapshots of existing volumes? If not, does anyone have advice for doing so manually in a way that plays smoothly with libvirt? -- Support your droogs! Nick Moffitt nick(a)zork.net

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[libvirt] Getting error "libvir: QEMU error : Domain not found"
by M. Mohan Kumar 12 Feb '09

12 Feb '09

Hi, When I try to run vm-install on a OpenSuse 11.1 machine, vm-install displays the following message "libvir: QEMU error : Domain not found". How ever the functionality is not affected. I don't think its really an error. It could be just an warning/information message. Is there any plan to change this message as warning/information from error level? Note: I am not in the mailing list, so please cc me while replying. -- Regards, M. Mohan Kumar

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[libvirt] [Patch] enable --checkpoint option in 'virsh save'
by Matt McCowan 12 Feb '09

12 Feb '09

Folks. I'm working on a scenario where I would like to provide my backup subsystems with a clean disk and ram state of any given VM, without necessitating shutting down the a VM. Xen's 'xm save' function with the '-c' (checkpoint) argument made sense in that I could checkpoint save the VM, take a snapshot of the LV containing the domain and its 'save' dump then resume the domain. Unfortunately out-of-the-box the Xen implementation did not pause the domain after the checkpoint, but resumed it automatically. Fastforward to using kvm ... Qemu/kvm with it's 'migrate' command by default left the domain paused after creating a state dump - just what I was looking for. A look at the libvirt code revealed that 'virsh save' carried out a migrate, then shut the domain down. So I have tried implementing a --checkpoint option into the save function using the --live option to the 'virsh migrate' function as a bit of a template. I'm a sysadmin, not a coder, so please forgive any oversights and all the other coding rules that may be broken. As mentioned before I did try to simply copy how the migrate --live option is used throughout. Patch (against 0.6.0) attached. I have also filed a feature request under bugzilla. If the additional feature is seen as warranted, please let me know what I can do to help implement it if the patch is not the way to go about it. Thankyou very much for Libvirt Regards Matt McCowan

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[libvirt] [PATCH] set an error when the domain doesn't show up
by Guido Günther 11 Feb '09

11 Feb '09

Hi, attached patch makes sure we set a proper error status when the domain doesn't show up. O.k. to apply? Cheers, -- Guido

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[libvirt] libvirt and the lowest common denominator
by John Levon 11 Feb '09

11 Feb '09

I wanted to bring this topic out of a patch review thread. Dan recently stated that only patches that use "upstream" facilities are acceptable, meaning the xend delivered by XenSource. I'd like to make a few points on this note: 1. I'd like to hear from the other core maintainers if they agree with this rule. 2. I'd like to hear a rationale for this rule. 3. The Sun repository *is* the upstream for xend on Solaris for a number of reasons: a. The 3.1.x series is only maintained by us, there is no other 3.1 upstream b. The XenSource upstream does not, and cannot, work on Solaris c. XenSource have no interest in xend at all and it's effectively unmaintained (with the exception of Novell I think). 4. I've seen stated a number of times that libvirt is designed to avoid becoming a lowest common denominator interface. I cannot reconcile that claim with this rule: all xend implementations must apparently be the same, and no enhancements are allowed. 5. This rule further restricts innovation in that XenSource must agree to any changes. This has a rather obvious chilling effect. The distro type/variant recording changes are a perfect example: this is essential information, and recording it in xend was pre-NAKed by XenSource a long time ago. 6. As a thought experiment: if someone re-wrote xend in C, what then? Is that upstream, or not? In case it's not clear, all of Sun's Xen changes are open source and easily available. 7. Any change that involves *incompatibility* is clearly different, and IMHO not acceptable. This is only about changes that in no way negatively affect behaviour with an upstream Linux xend. 8. I hope it's clear to everyone that I'm motivated to merge changes upstream wherever feasible. I'm not seeking some kind of get-out clause from being a responsible maintainer. 9. Practically, we will have to carry these changes in our libvirt no matter what. I'd rather not. 10. I would note that Red Hat own the upstream for the code they care about, thus this rule can only cause trouble for other people. My personal opinion, not Sun's. regards, john

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[libvirt] saving virtual machine state when rebooting the server machine
by Itamar Reis Peixoto 10 Feb '09

10 Feb '09

is possible to save virtual machine state when rebooting the server machine ? https://help.ubuntu.com/8.04/serverguide/C/libvirt.html The state of virtual machines can be saved to a file in order to be restored later. The following will save the virtual machine state into a file named according to the date: virsh -c qemu:///system save web_devel web_devel-022708.state Once saved the virtual machine will no longer be running. A saved virtual machine can be restored using: virsh -c qemu:///system restore web_devel-022708.state -- ------------ Itamar Reis Peixoto e-mail/msn: itamar(a)ispbrasil.com.br sip: itamar(a)ispbrasil.com.br skype: itamarjp icq: 81053601 +55 11 4063 5033 +55 34 3221 8599

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[libvirt] [PATCH ] (type ioem) adding qemu nic configuration option in to libvirt (XEN)
by Gihan Munasinghe 09 Feb '09

09 Feb '09

Guys I have added a new attribute with with in <interface > tag called "qemu" which can be either true or false.. Indicating if the user wants XEN to create qeum net device or not.. This will fix the problem with PV net drivers with XEN.. Check the following examples e.g 1) Interface tag with qemu attribute set to false <interface type='bridge' qemu='false'> <mac address='00:16:3e:00:a5:01'/> <source bridge='eth0'/> <target dev='vif1.0'/> </interface> qemu-dm output --------------------- /usr/lib64/xen/bin/qemu-dm -d 60 -domain-name benchmark1 -k en-gb -vnc 0.0.0.0:1 -vcpus 2 -boot c -serial pty -acpi -usb -net none -M xenfv XEND has configured the hvm guest not to have network card via qemu e.g 2) Interface tag with qemu attribute set to true with qemu supported nic model <interface type='bridge' qemu='true'> <mac address='00:16:3e:00:a5:01'/> <source bridge='eth0'/> <target dev='vif1.0'/> <model type='e1000'/> </interface> qemu-dm output --------------------- /usr/lib64/xen/bin/qemu-dm -d 61 -domain-name benchmark1 -k en-gb -vnc 0.0.0.0:1 -vcpus 2 -boot c -serial pty -acpi -usb -net nic,vlan=1,macaddr=00:16:3e:00:a5:01,model=e1000 -net tap,vlan=1,ifname=tap61.0,bridge=eth0 -M xenfv Now XEND have configured the hvm guest to have emulated nic of the model "e1000" Therefore now, via libvirt configuration I have the ability ask xen to either to configure qemu network card or not (when I have pv divers installed with in my VM ) I have attached the patch files, Let me know what you guys think. Thanks Gihan -- Gihan Munasinghe R&D Team Leader XCalibre Communications Ltd. www.flexiscale.com --- domain_conf.h.back 2008-12-04 15:31:38.000000000 +0000 +++ domain_conf.h 2008-12-04 20:28:16.000000000 +0000 @@ -127,9 +127,17 @@ VIR_DOMAIN_NET_TYPE_NETWORK, VIR_DOMAIN_NET_TYPE_BRIDGE, - VIR_DOMAIN_NET_TYPE_LAST, + VIR_DOMAIN_NET_TYPE_LAST }; +/*Holds the values that can be passed as qemu attribute in <inteface >*/ +enum virDomainNetQemuAllocateType{ + VIR_DOMAIN_NET_QEMU_ALLOC_TRUE, + VIR_DOMAIN_NET_QEMU_ALLOC_FALSE, + + VIR_DOMAIN_NET_QEMU_ALLOC_LAST + +}; /* Stores the virtual network interface configuration */ typedef struct _virDomainNetDef virDomainNetDef; @@ -156,6 +164,8 @@ } bridge; } data; char *ifname; + int qemu_allocate;/* This is set so that the users can ask xen not give vm's a network card + maily to with the (type none)/(type ieoum) tags wchi will be send to xend*/ }; enum virDomainChrSrcType { @@ -608,5 +618,5 @@ VIR_ENUM_DECL(virDomainInput) VIR_ENUM_DECL(virDomainInputBus) VIR_ENUM_DECL(virDomainGraphics) - +VIR_ENUM_DECL(virDomainNetQemuAllocate) #endif /* __DOMAIN_CONF_H */ --- domain_conf.c.back 2008-12-04 15:31:40.000000000 +0000 +++ domain_conf.c 2008-12-04 20:30:31.000000000 +0000 @@ -142,6 +142,10 @@ "usb", "pci") +VIR_ENUM_IMPL(virDomainNetQemuAllocate, VIR_DOMAIN_NET_QEMU_ALLOC_LAST, + "true", + "false") + #define virDomainReportError(conn, code, fmt...) \ virReportErrorHelper(conn, VIR_FROM_DOMAIN, code, __FILE__, \ __FUNCTION__, __LINE__, fmt) @@ -787,6 +791,7 @@ char *address = NULL; char *port = NULL; char *model = NULL; + char *qemu_alloc = NULL; if (VIR_ALLOC(def) < 0) { virDomainReportError(conn, VIR_ERR_NO_MEMORY, NULL); @@ -800,6 +805,17 @@ _("unknown interface type '%s'"), type); goto error; } + qemu_alloc = virXMLPropString(node, "qemu"); + if( qemu_alloc!=NULL){ + if ((def->qemu_allocate = virDomainNetQemuAllocateTypeFromString(qemu_alloc)) < 0) { + virDomainReportError(conn, VIR_ERR_INTERNAL_ERROR, + _("unknown qemu alloc '%s'"), qemu_alloc); + goto error; + } + + }else{ + def->qemu_allocate = VIR_DOMAIN_NET_QEMU_ALLOC_TRUE; // by default the aloocation will be true + } } else { def->type = VIR_DOMAIN_NET_TYPE_USER; } @@ -818,6 +834,7 @@ (def->type == VIR_DOMAIN_NET_TYPE_BRIDGE) && (xmlStrEqual(cur->name, BAD_CAST "source"))) { bridge = virXMLPropString(cur, "bridge"); + } else if ((dev == NULL) && (def->type == VIR_DOMAIN_NET_TYPE_ETHERNET) && xmlStrEqual(cur->name, BAD_CAST "source")) { --- xend_internal.c.back 2008-12-04 15:31:38.000000000 +0000 +++ xend_internal.c 2008-12-04 21:05:49.000000000 +0000 @@ -1773,10 +1773,9 @@ if (VIR_ALLOC(net) < 0) goto no_memory; - if ((tmp2 && strstr(tmp2, "bridge")) || tmp) { - net->type = VIR_DOMAIN_NET_TYPE_BRIDGE; - /* XXX virtual network reverse resolve */ - + if ((tmp2 && (strstr(tmp2, "bridge") )) || tmp) { + net->type = VIR_DOMAIN_NET_TYPE_BRIDGE; + /* XXX virtual network reverse resolve */ if (tmp && !(net->data.bridge.brname = strdup(tmp))) goto no_memory; @@ -5153,10 +5152,15 @@ /* * apparently (type ioemu) breaks paravirt drivers on HVM so skip this - * from Xen 3.1.0 + * from Xen 3.1.0 This happence as XEN try to allocate a network card via qemu */ - if ((hvm) && (xendConfigVersion < 4)) - virBufferAddLit(buf, "(type ioemu)"); +// if ((hvm) && (xendConfigVersion < 4) ) + if ((hvm) && (def->qemu_allocate==VIR_DOMAIN_NET_QEMU_ALLOC_FALSE)){ /* If we have asked the qemu not to allocte a net work for hvm guest. + This way you would not have a problem with PV drivers on HVM guests*/ + virBufferAddLit(buf, "(type none)"); + }else { + virBufferAddLit(buf, "(type ioemu)"); + } if (!isAttach) virBufferAddLit(buf, ")");

5 8

[libvirt] adding tests....
by Jim Meyering 09 Feb '09

09 Feb '09

In adding a couple of tests, I noticed that libvirtd --config=no-such didn't diagnose my mistake. I fixed that with the first patch below: diagnose "libvirtd --config=no-such-file" * qemud/qemud.c (remoteReadConfigFile): Don't return 0 (success) when the config file is unreadable or nonexistent Return -1, not 0, upon virConfReadFile failure. (main): If remote_config_file is not specified via --config(-f), use the default config file only if it exists. Otherwise, use /dev/null. However, that made it so libvirtd gave two diagnostics: Failed to open file 'no-such': No such file or directory libvir: Config error : failed to open no-such for reading The latter part of that patch fixes it like this: * src/conf.c (virConfReadFile): Don't diagnose virFileReadAll failure, since it already does that. Finally, I went to add the two tests, one to ensure libvirtd --config=no-such-file now fails, as I expected another to start libvirtd and then run a small pool-related test via a separate virsh invocation. But that made me see a bug in tests/Makefile.am: A missing backslash made it so the virsh-all test wasn't being run. Easy to fix. But then, I saw when virsh-all runs it generated too much output, so I did this: tests: quiet virsh-all * tests/virsh-all: For now, ignore diagnostics and exit status, when running all virsh commands. Finally, here are the two tests: add tests * tests/libvirtd-pool: New file. * tests/libvirtd-fail: New file. * tests/Makefile.am (test_scripts): Add omitted backslash, so that the virsh-all test is run. Add libvirtd-fail and libvirtd-pool. >From aaea6d51f5200e58086d9cabf8b6e7fac7c460f8 Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Thu, 8 Jan 2009 20:17:35 +0100 Subject: [PATCH 1/3] diagnose "libvirtd --config=no-such-file" * qemud/qemud.c (remoteReadConfigFile): Don't return 0 (success) when the config file is unreadable or nonexistent Return -1, not 0, upon virConfReadFile failure. (main): If remote_config_file is not specified via --config(-f), use the default config file only if it exists. Otherwise, use /dev/null. * src/conf.c (virConfReadFile): Don't diagnose virFileReadAll failure, since it already does that. --- qemud/qemud.c | 20 ++++++++++++-------- src/conf.c | 3 +-- 2 files changed, 13 insertions(+), 10 deletions(-) diff --git a/qemud/qemud.c b/qemud/qemud.c index c3d3c02..9835e0a 100644 --- a/qemud/qemud.c +++ b/qemud/qemud.c @@ -1,7 +1,7 @@ /* * qemud.c: daemon start of day, guest process & i/o management * - * Copyright (C) 2006, 2007, 2008 Red Hat, Inc. + * Copyright (C) 2006, 2007, 2008, 2009 Red Hat, Inc. * Copyright (C) 2006 Daniel P. Berrange * * This library is free software; you can redistribute it and/or @@ -2116,13 +2116,8 @@ remoteReadConfigFile (struct qemud_server *server, const char *filename) auth_unix_ro = REMOTE_AUTH_NONE; #endif - /* Just check the file is readable before opening it, otherwise - * libvirt emits an error. - */ - if (access (filename, R_OK) == -1) return 0; - conf = virConfReadFile (filename); - if (!conf) return 0; + if (!conf) return -1; /* * First get all the logging settings and activate them @@ -2301,7 +2296,7 @@ int main(int argc, char **argv) { struct sigaction sig_action; int sigpipe[2]; const char *pid_file = NULL; - const char *remote_config_file = SYSCONF_DIR "/libvirt/libvirtd.conf"; + const char *remote_config_file = NULL; int ret = 1; struct option opts[] = { @@ -2372,6 +2367,15 @@ int main(int argc, char **argv) { } } + if (remote_config_file == NULL) { + static const char *default_config_file + = SYSCONF_DIR "/libvirt/libvirtd.conf"; + remote_config_file = + (access(default_config_file, X_OK) == 0 + ? default_config_file + : "/dev/null"); + } + if (godaemon) { if (qemudGoDaemon() < 0) { VIR_ERROR(_("Failed to fork as daemon: %s"), strerror(errno)); diff --git a/src/conf.c b/src/conf.c index 9f0fc34..339a150 100644 --- a/src/conf.c +++ b/src/conf.c @@ -1,7 +1,7 @@ /** * conf.c: parser for a subset of the Python encoded Xen configuration files * - * Copyright (C) 2006, 2007, 2008 Red Hat, Inc. + * Copyright (C) 2006, 2007, 2008, 2009 Red Hat, Inc. * * See COPYING.LIB for the License of this software * @@ -712,7 +712,6 @@ virConfReadFile(const char *filename) } if ((len = virFileReadAll(filename, MAX_CONFIG_FILE_SIZE, &content)) < 0) { - virConfError(NULL, VIR_ERR_OPEN_FAILED, filename); return NULL; } -- 1.6.1.141.gfe98e >From e70a4556a8422779b7997ab03997af4b9a03087c Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Thu, 8 Jan 2009 19:58:19 +0100 Subject: [PATCH 2/3] tests: quiet virsh-all * tests/virsh-all: For now, ignore diagnostics and exit status, when running all virsh commands. --- tests/virsh-all | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/tests/virsh-all b/tests/virsh-all index f1c84a3..03ea466 100755 --- a/tests/virsh-all +++ b/tests/virsh-all @@ -1,7 +1,7 @@ #!/bin/sh # blindly run each and every command listed by "virsh help" -# Copyright (C) 2008 Free Software Foundation, Inc. +# Copyright (C) 2008, 2009 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -35,7 +35,8 @@ test -n "$cmds" || framework_failure for i in $cmds; do echo testing $i... 1>&2 - virsh -c $test_url $i < /dev/null + # For now, just run the command and ignore output and exit status. + virsh -c $test_url $i < /dev/null > /dev/null 2>&1 done (exit $fail); exit $fail -- 1.6.1.141.gfe98e >From 307c465a008cbb4a497a6553046a036e95843519 Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Thu, 8 Jan 2009 20:18:17 +0100 Subject: [PATCH 3/3] add two tests * tests/libvirtd-pool: New file. * tests/libvirtd-fail: New file. * tests/Makefile.am (test_scripts): Add omitted backslash, so that the virsh-all test is run. Add libvirtd-fail and libvirtd-pool. --- tests/Makefile.am | 24 ++++++++++++---------- tests/libvirtd-fail | 20 +++++++++++++++++++ tests/libvirtd-pool | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 86 insertions(+), 11 deletions(-) create mode 100755 tests/libvirtd-fail create mode 100755 tests/libvirtd-pool diff --git a/tests/Makefile.am b/tests/Makefile.am index d8b5e44..a3e4383 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -56,17 +56,19 @@ endif test_scripts = domainschematest if WITH_LIBVIRTD -test_scripts += \ - test_conf.sh \ - cpuset \ - daemon-conf \ - int-overflow \ - read-bufsiz \ - read-non-seekable \ - start \ - undefine \ - vcpupin - virsh-all +test_scripts += \ + cpuset \ + daemon-conf \ + int-overflow \ + libvirtd-fail \ + libvirtd-pool \ + read-bufsiz \ + read-non-seekable \ + start \ + test_conf.sh \ + undefine \ + vcpupin \ + virsh-all \ virsh-synopsis endif diff --git a/tests/libvirtd-fail b/tests/libvirtd-fail new file mode 100755 index 0000000..724d7c6 --- /dev/null +++ b/tests/libvirtd-fail @@ -0,0 +1,20 @@ +#!/bin/sh +# Ensure that libvirt fails when given nonexistent --config=FILE + +if test "$VERBOSE" = yes; then + set -x + libvirtd --version +fi + +test -z "$srcdir" && srcdir=$(pwd) +test -z "$abs_top_srcdir" && abs_top_srcdir=$(pwd)/.. +. "$srcdir/test-lib.sh" + +fail=0 + +libvirtd --config=no-such-file > log 2>&1 && fail=1 +cat <<\EOF > exp +Failed to open file 'no-such-file': No such file or directory +EOF + +compare exp log diff --git a/tests/libvirtd-pool b/tests/libvirtd-pool new file mode 100755 index 0000000..72afa12 --- /dev/null +++ b/tests/libvirtd-pool @@ -0,0 +1,53 @@ +#!/bin/sh +# Get coverage of libvirtd's config-parsing code. + +if test "$VERBOSE" = yes; then + set -x + libvirtd --version + virsh --version +fi + +test -z "$srcdir" && srcdir=$(pwd) +test -z "$abs_top_srcdir" && abs_top_srcdir=$(pwd)/.. +. "$srcdir/test-lib.sh" + +fail=0 + +libvirtd > log 2>&1 & pid=$! +sleep 1 + +virsh --connect qemu:///session \ + pool-define-as P dir src-host /src/path /src/dev S /target-path > out 2>&1 \ + || fail=1 +virsh --connect qemu:///session pool-dumpxml P >> out 2>&1 || fail=1 + +# remove random uuid +sed 's/<uuid>.*/-/' out > k && mv k out || fail=1 + +kill $pid + +cat <<EOF > exp +Pool P defined + +<pool type='dir'> + <name>P</name> + - + <capacity>0</capacity> + <allocation>0</allocation> + <available>0</available> + <source> + </source> + <target> + <path>/target-path</path> + <permissions> + <mode>0700</mode> + <owner>500</owner> + <group>500</group> + </permissions> + </target> +</pool> + +EOF + +compare exp out +compare /dev/null log -- 1.6.1.141.gfe98e

3 19

[libvirt] [PATCH] Solaris PV is localtime. Allow this setting through the conversions
by john.levon＠sun.com 09 Feb '09

09 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233198416 28800 # Node ID 76d670ab6ea5476be96441ea88af94644c985201 # Parent f0247b9f4da199c01412d5bd0f9d7d888cbb84de Solaris PV is localtime. Allow this setting through the conversions. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/xend_internal.c b/src/xend_internal.c --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -2272,10 +2272,12 @@ xenDaemonParseSxpr(virConnectPtr conn, def->features |= (1 << VIR_DOMAIN_FEATURE_APIC); if (sexpr_int(root, "domain/image/hvm/pae")) def->features |= (1 << VIR_DOMAIN_FEATURE_PAE); - - if (sexpr_int(root, "domain/image/hvm/localtime")) + } + + if (sexpr_int(root, "domain/localtime") || + sexpr_int(root, "domain/image/hvm/localtime") || + sexpr_int(root, "domain/image/linux/localtime")) def->localtime = 1; - } if (sexpr_node_copy(root, hvm ? "domain/image/hvm/device_model" : @@ -5338,6 +5340,14 @@ xenDaemonFormatSxpr(virConnectPtr conn, } virBufferVSprintf(&buf, "(on_crash '%s')", tmp); + /* + * xend puts localtime in image/{hvm,linux}/, but is clearly + * bootloader independent. As a simple workaround, we define it + * here - xend happily picks it up from here. + */ + if (def->localtime) + virBufferAddLit(&buf, "(localtime 1)"); + if (!def->os.bootloader) { if (STREQ(def->os.type, "hvm")) hvm = 1; @@ -5453,9 +5463,6 @@ xenDaemonFormatSxpr(virConnectPtr conn, virBufferAddLit(&buf, "(serial none)"); } - if (def->localtime) - virBufferAddLit(&buf, "(localtime 1)"); - if (def->sounds) { virBufferAddLit(&buf, "(soundhw '"); if (xenDaemonFormatSxprSound(conn, def, &buf) < 0) diff --git a/src/xm_internal.c b/src/xm_internal.c --- a/src/xm_internal.c +++ b/src/xm_internal.c @@ -818,10 +818,11 @@ xenXMDomainConfigParse(virConnectPtr con goto cleanup; else if (val) def->features |= (1 << VIR_DOMAIN_FEATURE_APIC); - - if (xenXMConfigGetBool(conn, conf, "localtime", &def->localtime, 0) < 0) - goto cleanup; - } + } + + if (xenXMConfigGetBool(conn, conf, "localtime", &def->localtime, 0) < 0) + goto cleanup; + if (xenXMConfigCopyStringOpt(conn, conf, "device_model", &def->emulator) < 0) goto cleanup; @@ -1972,6 +1973,9 @@ virConfPtr xenXMDomainConfigFormat(virCo if (xenXMConfigSetInt(conf, "vcpus", def->vcpus) < 0) goto no_memory; + if (def->localtime && xenXMConfigSetInt(conf, "localtime", 1) < 0) + goto no_memory; + if (def->cpumask && !(cpus = virDomainCpuSetFormat(conn, def->cpumask, def->cpumasklen)) < 0) goto cleanup; @@ -2034,9 +2038,6 @@ virConfPtr xenXMDomainConfigFormat(virCo (1 << VIR_DOMAIN_FEATURE_APIC)) ? 1 : 0) < 0) goto no_memory; - - if (xenXMConfigSetInt(conf, "localtime", def->localtime ? 1 : 0) < 0) - goto no_memory; if (priv->xendConfigVersion == 1) { for (i = 0 ; i < def->ndisks ; i++) { diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-localtime2.sexpr b/tests/sexpr2xmldata/sexpr2xml-fv-localtime2.sexpr new file mode 100644 --- /dev/null +++ b/tests/sexpr2xmldata/sexpr2xml-fv-localtime2.sexpr @@ -0,0 +1,1 @@ +(domain (domid 3)(name 'fvtest')(memory 400)(maxmem 400)(vcpus 1)(uuid 'b5d70dd275cdaca517769660b059d8bc')(on_poweroff 'destroy')(on_reboot 'restart')(on_crash 'restart')(localtime 1)(image (hvm (kernel '/usr/lib/xen/boot/hvmloader')(device_model '/usr/lib64/xen/bin/qemu-dm')(boot c)(cdrom '/root/boot.iso')(acpi 1)(vnc 1)(keymap ja)))(device (vbd (dev 'ioemu:hda')(uname 'file:/root/foo.img')(mode 'w')))(device (vif (mac '00:16:3e:1b:b1:47')(bridge 'xenbr0')(script 'vif-bridge')(type ioemu)))) diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-localtime2.xml b/tests/sexpr2xmldata/sexpr2xml-fv-localtime2.xml new file mode 100644 --- /dev/null +++ b/tests/sexpr2xmldata/sexpr2xml-fv-localtime2.xml @@ -0,0 +1,41 @@ +<domain type='xen' id='3'> + <name>fvtest</name> + <uuid>b5d70dd2-75cd-aca5-1776-9660b059d8bc</uuid> + <memory>409600</memory> + <currentMemory>409600</currentMemory> + <vcpu>1</vcpu> + <os> + <type>hvm</type> + <loader>/usr/lib/xen/boot/hvmloader</loader> + <boot dev='hd'/> + </os> + <features> + <acpi/> + </features> + <clock offset='localtime'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>restart</on_crash> + <devices> + <emulator>/usr/lib64/xen/bin/qemu-dm</emulator> + <disk type='file' device='disk'> + <driver name='file'/> + <source file='/root/foo.img'/> + <target dev='hda' bus='ide'/> + </disk> + <disk type='file' device='cdrom'> + <driver name='file'/> + <source file='/root/boot.iso'/> + <target dev='hdc' bus='ide'/> + <readonly/> + </disk> + <interface type='bridge'> + <mac address='00:16:3e:1b:b1:47'/> + <source bridge='xenbr0'/> + <script path='vif-bridge'/> + <target dev='vif3.0'/> + </interface> + <input type='mouse' bus='ps2'/> + <graphics type='vnc' port='5903' autoport='no' keymap='ja'/> + </devices> +</domain> diff --git a/tests/sexpr2xmldata/sexpr2xml-pv-localtime.sexpr b/tests/sexpr2xmldata/sexpr2xml-pv-localtime.sexpr new file mode 100644 --- /dev/null +++ b/tests/sexpr2xmldata/sexpr2xml-pv-localtime.sexpr @@ -0,0 +1,2 @@ +(domain (domid 6)(name 'pvtest')(memory 420)(maxmem 420)(vcpus 2)(uuid '596a5d2171f48fb2e068e2386a5c413e')(on_poweroff 'destroy')(on_reboot 'destroy')(on_crash 'destroy')(localtime 1)(image (linux (kernel '/var/lib/xen/vmlinuz.2Dn2YT')(ramdisk '/var/lib/xen/initrd.img.0u-Vhq')(args ' method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5… ')))(device (vbd (dev 'xvda')(uname 'file:/root/some.img')(mode 'w')))) + diff --git a/tests/sexpr2xmldata/sexpr2xml-pv-localtime.xml b/tests/sexpr2xmldata/sexpr2xml-pv-localtime.xml new file mode 100644 --- /dev/null +++ b/tests/sexpr2xmldata/sexpr2xml-pv-localtime.xml @@ -0,0 +1,27 @@ +<domain type='xen' id='6'> + <name>pvtest</name> + <uuid>596a5d21-71f4-8fb2-e068-e2386a5c413e</uuid> + <memory>430080</memory> + <currentMemory>430080</currentMemory> + <vcpu>2</vcpu> + <os> + <type>linux</type> + <kernel>/var/lib/xen/vmlinuz.2Dn2YT</kernel> + <initrd>/var/lib/xen/initrd.img.0u-Vhq</initrd> + <cmdline> method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5… </cmdline> + </os> + <clock offset='localtime'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>destroy</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <disk type='file' device='disk'> + <driver name='file'/> + <source file='/root/some.img'/> + <target dev='xvda' bus='xen'/> + </disk> + <console type='pty'> + <target port='0'/> + </console> + </devices> +</domain> diff --git a/tests/sexpr2xmltest.c b/tests/sexpr2xmltest.c --- a/tests/sexpr2xmltest.c +++ b/tests/sexpr2xmltest.c @@ -129,6 +129,7 @@ mymain(int argc, char **argv) DO_TEST("pv-vfb-new-vncdisplay", "pv-vfb-new-vncdisplay", 3); DO_TEST("fv-autoport", "fv-autoport", 3); DO_TEST("pv-bootloader", "pv-bootloader", 1); + DO_TEST("pv-localtime", "pv-localtime", 1); DO_TEST("disk-file", "disk-file", 2); DO_TEST("disk-block", "disk-block", 2); @@ -145,6 +146,7 @@ mymain(int argc, char **argv) DO_TEST("fv-utc", "fv-utc", 1); DO_TEST("fv-localtime", "fv-localtime", 1); + DO_TEST("fv-localtime2", "fv-localtime2", 1); DO_TEST("fv-usbmouse", "fv-usbmouse", 1); DO_TEST("fv-usbtablet", "fv-usbtablet", 1); DO_TEST("fv-kernel", "fv-kernel", 1); diff --git a/tests/xmconfigdata/test-escape-paths.cfg b/tests/xmconfigdata/test-escape-paths.cfg --- a/tests/xmconfigdata/test-escape-paths.cfg +++ b/tests/xmconfigdata/test-escape-paths.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-localtime.cfg b/tests/xmconfigdata/test-fullvirt-localtime.cfg --- a/tests/xmconfigdata/test-fullvirt-localtime.cfg +++ b/tests/xmconfigdata/test-fullvirt-localtime.cfg @@ -3,13 +3,13 @@ maxmem = 579 maxmem = 579 memory = 394 vcpus = 1 +localtime = 1 builder = "hvm" kernel = "/usr/lib/xen/boot/hvmloader" boot = "d" pae = 1 acpi = 1 apic = 1 -localtime = 1 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-new-cdrom.cfg b/tests/xmconfigdata/test-fullvirt-new-cdrom.cfg --- a/tests/xmconfigdata/test-fullvirt-new-cdrom.cfg +++ b/tests/xmconfigdata/test-fullvirt-new-cdrom.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-old-cdrom.cfg b/tests/xmconfigdata/test-fullvirt-old-cdrom.cfg --- a/tests/xmconfigdata/test-fullvirt-old-cdrom.cfg +++ b/tests/xmconfigdata/test-fullvirt-old-cdrom.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 cdrom = "/root/boot.iso" on_poweroff = "destroy" on_reboot = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-parallel-tcp.cfg b/tests/xmconfigdata/test-fullvirt-parallel-tcp.cfg --- a/tests/xmconfigdata/test-fullvirt-parallel-tcp.cfg +++ b/tests/xmconfigdata/test-fullvirt-parallel-tcp.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-file.cfg b/tests/xmconfigdata/test-fullvirt-serial-file.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-file.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-file.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-null.cfg b/tests/xmconfigdata/test-fullvirt-serial-null.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-null.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-null.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-pipe.cfg b/tests/xmconfigdata/test-fullvirt-serial-pipe.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-pipe.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-pipe.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-pty.cfg b/tests/xmconfigdata/test-fullvirt-serial-pty.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-pty.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-pty.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-stdio.cfg b/tests/xmconfigdata/test-fullvirt-serial-stdio.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-stdio.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-stdio.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.cfg b/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-tcp.cfg b/tests/xmconfigdata/test-fullvirt-serial-tcp.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-tcp.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-tcp.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-udp.cfg b/tests/xmconfigdata/test-fullvirt-serial-udp.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-udp.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-udp.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-serial-unix.cfg b/tests/xmconfigdata/test-fullvirt-serial-unix.cfg --- a/tests/xmconfigdata/test-fullvirt-serial-unix.cfg +++ b/tests/xmconfigdata/test-fullvirt-serial-unix.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-sound.cfg b/tests/xmconfigdata/test-fullvirt-sound.cfg --- a/tests/xmconfigdata/test-fullvirt-sound.cfg +++ b/tests/xmconfigdata/test-fullvirt-sound.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-usbmouse.cfg b/tests/xmconfigdata/test-fullvirt-usbmouse.cfg --- a/tests/xmconfigdata/test-fullvirt-usbmouse.cfg +++ b/tests/xmconfigdata/test-fullvirt-usbmouse.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-usbtablet.cfg b/tests/xmconfigdata/test-fullvirt-usbtablet.cfg --- a/tests/xmconfigdata/test-fullvirt-usbtablet.cfg +++ b/tests/xmconfigdata/test-fullvirt-usbtablet.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-fullvirt-utc.cfg b/tests/xmconfigdata/test-fullvirt-utc.cfg --- a/tests/xmconfigdata/test-fullvirt-utc.cfg +++ b/tests/xmconfigdata/test-fullvirt-utc.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" diff --git a/tests/xmconfigdata/test-no-source-cdrom.cfg b/tests/xmconfigdata/test-no-source-cdrom.cfg --- a/tests/xmconfigdata/test-no-source-cdrom.cfg +++ b/tests/xmconfigdata/test-no-source-cdrom.cfg @@ -9,7 +9,6 @@ pae = 1 pae = 1 acpi = 1 apic = 1 -localtime = 0 on_poweroff = "destroy" on_reboot = "destroy" on_crash = "destroy" diff --git a/tests/xml2sexprdata/xml2sexpr-fv-localtime.sexpr b/tests/xml2sexprdata/xml2sexpr-fv-localtime.sexpr --- a/tests/xml2sexprdata/xml2sexpr-fv-localtime.sexpr +++ b/tests/xml2sexprdata/xml2sexpr-fv-localtime.sexpr @@ -1,1 +1,1 @@ -(vm (name 'fvtest')(memory 400)(maxmem 400)(vcpus 1)(uuid 'b5d70dd2-75cd-aca5-1776-9660b059d8bc')(on_poweroff 'destroy')(on_reboot 'restart')(on_crash 'restart')(image (hvm (kernel '/usr/lib/xen/boot/hvmloader')(vcpus 1)(boot c)(cdrom '/root/boot.iso')(acpi 1)(usb 1)(parallel none)(serial none)(localtime 1)(device_model '/usr/lib64/xen/bin/qemu-dm')(vnc 1)))(device (vbd (dev 'ioemu:hda')(uname 'file:/root/foo.img')(mode 'w')))(device (vif (mac '00:16:3e:1b:b1:47')(bridge 'xenbr0')(script 'vif-bridge')(type ioemu)))) \ No newline at end of file +(vm (name 'fvtest')(memory 400)(maxmem 400)(vcpus 1)(uuid 'b5d70dd2-75cd-aca5-1776-9660b059d8bc')(on_poweroff 'destroy')(on_reboot 'restart')(on_crash 'restart')(localtime 1)(image (hvm (kernel '/usr/lib/xen/boot/hvmloader')(vcpus 1)(boot c)(cdrom '/root/boot.iso')(acpi 1)(usb 1)(parallel none)(serial none)(device_model '/usr/lib64/xen/bin/qemu-dm')(vnc 1)))(device (vbd (dev 'ioemu:hda')(uname 'file:/root/foo.img')(mode 'w')))(device (vif (mac '00:16:3e:1b:b1:47')(bridge 'xenbr0')(script 'vif-bridge')(type ioemu)))) \ No newline at end of file diff --git a/tests/xml2sexprdata/xml2sexpr-pv-localtime.sexpr b/tests/xml2sexprdata/xml2sexpr-pv-localtime.sexpr new file mode 100644 --- /dev/null +++ b/tests/xml2sexprdata/xml2sexpr-pv-localtime.sexpr @@ -0,0 +1,1 @@ +(vm (name 'pvtest')(memory 420)(maxmem 420)(vcpus 2)(uuid '596a5d21-71f4-8fb2-e068-e2386a5c413e')(on_poweroff 'destroy')(on_reboot 'destroy')(on_crash 'destroy')(localtime 1)(image (linux (kernel '/var/lib/xen/vmlinuz.2Dn2YT')(ramdisk '/var/lib/xen/initrd.img.0u-Vhq')(args ' method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5… ')))(device (vbd (dev 'xvda')(uname 'file:/root/some.img')(mode 'w')))) \ No newline at end of file diff --git a/tests/xml2sexprdata/xml2sexpr-pv-localtime.xml b/tests/xml2sexprdata/xml2sexpr-pv-localtime.xml new file mode 100644 --- /dev/null +++ b/tests/xml2sexprdata/xml2sexpr-pv-localtime.xml @@ -0,0 +1,24 @@ +<domain type='xen' id='15'> + <name>pvtest</name> + <uuid>596a5d2171f48fb2e068e2386a5c413e</uuid> + <os> + <type>linux</type> + <kernel>/var/lib/xen/vmlinuz.2Dn2YT</kernel> + <initrd>/var/lib/xen/initrd.img.0u-Vhq</initrd> + <cmdline> method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5… </cmdline> + </os> + <memory>430080</memory> + <vcpu>2</vcpu> + <clock offset='localtime'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>destroy</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <disk type='file' device='disk'> + <source file='/root/some.img'/> + <target dev='xvda'/> + </disk> + <console tty='/dev/pts/4'/> + </devices> +</domain> + diff --git a/tests/xml2sexprdata/xml2sexpr-pv-utc.sexpr b/tests/xml2sexprdata/xml2sexpr-pv-utc.sexpr new file mode 100644 --- /dev/null +++ b/tests/xml2sexprdata/xml2sexpr-pv-utc.sexpr @@ -0,0 +1,1 @@ +(vm (name 'pvtest')(memory 420)(maxmem 420)(vcpus 2)(uuid '596a5d21-71f4-8fb2-e068-e2386a5c413e')(on_poweroff 'destroy')(on_reboot 'destroy')(on_crash 'destroy')(image (linux (kernel '/var/lib/xen/vmlinuz.2Dn2YT')(ramdisk '/var/lib/xen/initrd.img.0u-Vhq')(args ' method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5… ')))(device (vbd (dev 'xvda')(uname 'file:/root/some.img')(mode 'w')))) \ No newline at end of file diff --git a/tests/xml2sexprdata/xml2sexpr-pv-utc.xml b/tests/xml2sexprdata/xml2sexpr-pv-utc.xml new file mode 100644 --- /dev/null +++ b/tests/xml2sexprdata/xml2sexpr-pv-utc.xml @@ -0,0 +1,24 @@ +<domain type='xen' id='15'> + <name>pvtest</name> + <uuid>596a5d2171f48fb2e068e2386a5c413e</uuid> + <os> + <type>linux</type> + <kernel>/var/lib/xen/vmlinuz.2Dn2YT</kernel> + <initrd>/var/lib/xen/initrd.img.0u-Vhq</initrd> + <cmdline> method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5… </cmdline> + </os> + <memory>430080</memory> + <vcpu>2</vcpu> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>destroy</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <disk type='file' device='disk'> + <source file='/root/some.img'/> + <target dev='xvda'/> + </disk> + <console tty='/dev/pts/4'/> + </devices> +</domain> + diff --git a/tests/xml2sexprtest.c b/tests/xml2sexprtest.c --- a/tests/xml2sexprtest.c +++ b/tests/xml2sexprtest.c @@ -112,6 +112,8 @@ mymain(int argc, char **argv) DO_TEST("pv-vfb-new", "pv-vfb-new", "pvtest", 3); DO_TEST("pv-vfb-new-auto", "pv-vfb-new-auto", "pvtest", 3); DO_TEST("pv-bootloader", "pv-bootloader", "pvtest", 1); + DO_TEST("pv-localtime", "pv-localtime", "pvtest", 1); + DO_TEST("pv-utc", "pv-utc", "pvtest", 1); DO_TEST("disk-file", "disk-file", "pvtest", 2); DO_TEST("disk-block", "disk-block", "pvtest", 2);

3 4

[libvirt] [PATCH] don't print uninitialized in debug diagnostic
by Jim Meyering 09 Feb '09

09 Feb '09

FYI, this was caught by bleeding-edge gcc (built from git just this morning). There are a few other problems, too. >From a3149ae688f4f7eac3ee001f8f4d5997d3f23eeb Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com> Date: Thu, 5 Feb 2009 18:57:07 +0100 Subject: [PATCH] don't print uninitialized in debug diagnostic * qemud/mdns.c (libvirtd_mdns_timeout_new): Don't use local, t, uninitialized. --- qemud/mdns.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/qemud/mdns.c b/qemud/mdns.c index b13a6e5..ae6ff08 100644 --- a/qemud/mdns.c +++ b/qemud/mdns.c @@ -309,7 +309,7 @@ static AvahiTimeout *libvirtd_mdns_timeout_new(const AvahiPoll *api ATTRIBUTE_UN AvahiTimeout *t; struct timeval now; long long nowms, thenms, timeout; - AVAHI_DEBUG("Add timeout %p TV %p", t, tv); + AVAHI_DEBUG("Add timeout TV %p", tv); if (VIR_ALLOC(t) < 0) return NULL; -- 1.6.1.2.511.gc5d3f

2 1

[libvirt] [PATCH] Allow off-line removal of devices via xend
by john.levon＠sun.com 09 Feb '09

09 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233806617 28800 # Node ID 507c2058c5f3c37894c573c4559eab58c5b52d7d # Parent 0b9d8336e5e089b19ac8381fdc77eadc72ef9eb7 Allow off-line removal of devices via xend We must avoid xenstore if the domain isn't running. For disks, this works in all xend versions; for NICs, however, this requires a change in netif.py to allow matching by MAC address. Preferring the device ID but falling back to the device ref works best with all versions of xend. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/xend_internal.c b/src/xend_internal.c --- a/src/xend_internal.c +++ b/src/xend_internal.c @@ -92,11 +92,17 @@ xenDaemonFormatSxprNet(virConnectPtr con int xendConfigVersion, int isAttach); static int -virDomainXMLDevID(virDomainPtr domain, - virDomainDeviceDefPtr dev, - char *class, - char *ref, - int ref_len); +virDomainDevRef(virDomainPtr domain, + virDomainDeviceDefPtr dev, + char *class, + char *ref, + int ref_len); +static int +virDomainDevID(virDomainPtr domain, + int type, + const char *ref, + char *devid, + int devid_len); #endif #define virXendError(conn, code, fmt...) \ @@ -3858,7 +3864,7 @@ xenDaemonAttachDevice(virDomainPtr domai virDomainDeviceDefPtr dev = NULL; virDomainDefPtr def = NULL; virBuffer buf = VIR_BUFFER_INITIALIZER; - char class[8], ref[80]; + char class[8], ref[80], devid[80]; if ((domain == NULL) || (domain->conn == NULL) || (domain->name == NULL)) { virXendError((domain ? domain->conn : NULL), VIR_ERR_INVALID_ARG, @@ -3914,15 +3920,24 @@ xenDaemonAttachDevice(virDomainPtr domai sexpr = virBufferContentAndReset(&buf); - if (virDomainXMLDevID(domain, dev, class, ref, sizeof(ref))) { + devid[0] = '\0'; + + if (virDomainDevRef(domain, dev, class, ref, sizeof(ref)) == -1) + goto cleanup; + + if (domain->id > 0 && + virDomainDevID(domain, dev->type, ref, devid, sizeof(devid)) != -1) { + VIR_DEBUG("device_configure(ref = %s, devid = %s): %s", + ref, devid, sexpr); + /* device exists, attempt to modify it */ + ret = xend_op(domain->conn, domain->name, "op", "device_configure", + "config", sexpr, "dev", devid, NULL); + } else { + VIR_DEBUG("device_create(ref = %s, devid = %s): %s", + ref, devid, sexpr); /* device doesn't exist, define it */ ret = xend_op(domain->conn, domain->name, "op", "device_create", "config", sexpr, NULL); - } - else { - /* device exists, attempt to modify it */ - ret = xend_op(domain->conn, domain->name, "op", "device_configure", - "config", sexpr, "dev", ref, NULL); } cleanup: @@ -3945,7 +3960,7 @@ xenDaemonDetachDevice(virDomainPtr domai xenDaemonDetachDevice(virDomainPtr domain, const char *xml) { xenUnifiedPrivatePtr priv; - char class[8], ref[80]; + char class[8], ref[80], devid[80]; virDomainDeviceDefPtr dev = NULL; virDomainDefPtr def = NULL; int ret = -1; @@ -3976,11 +3991,41 @@ xenDaemonDetachDevice(virDomainPtr domai def, xml, VIR_DOMAIN_XML_INACTIVE))) goto cleanup; - if (virDomainXMLDevID(domain, dev, class, ref, sizeof(ref))) + if (dev->type != VIR_DOMAIN_DEVICE_NET && + dev->type != VIR_DOMAIN_DEVICE_DISK) { + virXendError(domain->conn, VIR_ERR_INTERNAL_ERROR, + _("can't detach device of type %d"), dev->type); goto cleanup; + } + + /* + * First acquire a static reference to the device (MAC address or + * destination disk). We'll use this if the domain isn't running, + * otherwise we'll rely upon the XenStore devid. + */ + + if (virDomainDevRef(domain, dev, class, ref, sizeof(ref)) == -1) { + virXendError(domain->conn, VIR_ERR_INTERNAL_ERROR, + _("can't detach device: not found ")); + goto cleanup; + } + + if (domain->id >= 0) { + if (virDomainDevID(domain, dev->type, ref, devid, sizeof(devid))) { + virXendError(domain->conn, VIR_ERR_INTERNAL_ERROR, + _("can't detach device: not found ")); + goto cleanup; + } + } else { + strncpy(devid, ref, 80); + } + + VIR_DEBUG("device_destroy(type = %s, ref = %s, devid = %s)", + class, ref, devid); ret = xend_op(domain->conn, domain->name, "op", "device_destroy", - "type", class, "dev", ref, "force", "0", "rm_cfg", "1", NULL); + "type", class, "dev", devid, "force", "0", + "rm_cfg", "1", NULL); cleanup: virDomainDefFree(def); @@ -5502,12 +5547,48 @@ error: /** - * virDomainXMLDevID: + * virDomainXMLDevRef: * @domain: pointer to domain object * @dev: pointer to device config object * @class: Xen device class "vbd" or "vif" (OUT) * @ref: Xen device reference (OUT) * + * Return the class (vbd/vif) and reference (MAC address / disk + * destination) of the given device. + * + * Returns 0 in case of success, -1 in case of failure. + */ +static int +virDomainDevRef(virDomainPtr domain, + virDomainDeviceDefPtr dev, + char *class, + char *ref, + int ref_len) +{ + if (dev->type == VIR_DOMAIN_DEVICE_DISK) { + if (dev->data.disk->dst == NULL) + return -1; + strncpy(ref, dev->data.disk->dst, ref_len); + strcpy(class, "vbd"); + } else if (dev->type == VIR_DOMAIN_DEVICE_NET) { + virFormatMacAddr(dev->data.net->mac, ref); + strcpy(class, "vif"); + } else { + virXendError(NULL, VIR_ERR_NO_SUPPORT, + _("no support for device type %d"), dev->type); + return -1; + } + + return 0; +} + +/** + * virDomainXMLDevID: + * @domain: pointer to domain object + * @class: either 'vbd' or 'vif' + * @ref: Xen device reference + * @devid: Xen device ID (OUT) + * * Set class according to XML root, and: * - if disk, copy in ref the target name from description * - if network, get MAC address from description, scan XenStore and @@ -5516,54 +5597,41 @@ error: * Returns 0 in case of success, -1 in case of failure. */ static int -virDomainXMLDevID(virDomainPtr domain, - virDomainDeviceDefPtr dev, - char *class, - char *ref, - int ref_len) +virDomainDevID(virDomainPtr domain, + int type, + const char *ref, + char *devid, + int devid_len) { xenUnifiedPrivatePtr priv = domain->conn->privateData; - char *xref; - - if (dev->type == VIR_DOMAIN_DEVICE_DISK) { - strcpy(class, "vbd"); - if (dev->data.disk->dst == NULL) - return -1; - xenUnifiedLock(priv); - xref = xenStoreDomainGetDiskID(domain->conn, domain->id, - dev->data.disk->dst); - xenUnifiedUnlock(priv); - if (xref == NULL) - return -1; - - strncpy(ref, xref, ref_len); - free(xref); - ref[ref_len - 1] = '\0'; - } else if (dev->type == VIR_DOMAIN_DEVICE_NET) { - char mac[30]; - virDomainNetDefPtr def = dev->data.net; - snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x", - def->mac[0], def->mac[1], def->mac[2], - def->mac[3], def->mac[4], def->mac[5]); - - strcpy(class, "vif"); - - xenUnifiedLock(priv); - xref = xenStoreDomainGetNetworkID(domain->conn, domain->id, - mac); - xenUnifiedUnlock(priv); - if (xref == NULL) - return -1; - - strncpy(ref, xref, ref_len); - free(xref); - ref[ref_len - 1] = '\0'; + char *id = NULL; + + if (domain->id < 0) { + virXendError(domain->conn, VIR_ERR_INTERNAL_ERROR, + _("devid not available for shutdown domain")); + return -1; + } + + xenUnifiedLock(priv); + + if (type == VIR_DOMAIN_DEVICE_DISK) { + id = xenStoreDomainGetDiskID(domain->conn, domain->id, ref); + + } else if (type == VIR_DOMAIN_DEVICE_NET) { + id = xenStoreDomainGetNetworkID(domain->conn, domain->id, ref); } else { virXendError(NULL, VIR_ERR_NO_SUPPORT, - "%s", _("hotplug of device type not supported")); + _("no support for device type %d"), type); + } + + xenUnifiedUnlock(priv); + + if (id == NULL) return -1; - } - + + strncpy(devid, id, devid_len); + VIR_FREE(id); + devid[devid_len - 1] = '\0'; return 0; }

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[libvirt] [PATCH] Improve error reporting in virsh
by john.levon＠sun.com 09 Feb '09

09 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233870902 28800 # Node ID fe7d1aae6184476568fcd3da379207375d8a05a6 # Parent 9fecb1254ee1dad6efeedc50239852104a6f40e2 Improve error reporting in virsh Rather than verbosely printing every error, save the last error and report that only if the entire command fails. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/src/virsh.c b/src/virsh.c --- a/src/virsh.c +++ b/src/virsh.c @@ -93,22 +93,6 @@ typedef enum { } vshErrorLevel; /* - * The error handler for virsh - */ -static void -virshErrorHandler(void *unused, virErrorPtr error) -{ - if ((unused != NULL) || (error == NULL)) - return; - - /* Suppress the VIR_ERR_NO_XEN error which fails as non-root */ - if ((error->code == VIR_ERR_NO_XEN) || (error->code == VIR_ERR_OK)) - return; - - virDefaultErrorFunc(error); -} - -/* * virsh command line grammar: * * command_line = <command>\n | <command>; <command>; ... @@ -319,6 +303,46 @@ static int namesorter(const void *a, con const char **sb = (const char**)b; return strcasecmp(*sa, *sb); +} + +static virErrorPtr last_error; + +/* + * Quieten libvirt until we're done with the command. + */ +static void +virshErrorHandler(void *unused, virErrorPtr error) +{ + virFreeError(last_error); + last_error = virSaveLastError(); + if (getenv("VIRSH_DEBUG") != NULL) + virDefaultErrorFunc(error); +} + +/* + * Report an error when a command finishes. This is better than before + * (when correct operation would report errors), but it has some + * problems: we lose the smarter formatting of virDefaultErrorFunc(), + * and it can become harder to debug problems, if errors get reported + * twice during one command. This case shouldn't really happen anyway, + * and it's IMHO a bug that libvirt does that sometimes. + */ +static void +virshReportError(vshControl *ctl) +{ + if (last_error == NULL) + return; + + if (last_error->code == VIR_ERR_OK) { + vshError(ctl, FALSE, "%s", _("unknown error")); + goto out; + } + + vshError(ctl, FALSE, "%s", last_error->message); + +out: + virFreeError(last_error); + last_error = NULL; } @@ -6102,6 +6126,9 @@ vshCommandRun(vshControl *ctl, const vsh if (ctl->timing) GETTIMEOFDAY(&after); + + if (ret == FALSE) + virshReportError(ctl); if (STREQ(cmd->def->name, "quit")) /* hack ... */ return ret;

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[libvirt] [PATCH] Introduce virSaveLastError(), virFreeError()
by john.levon＠sun.com 09 Feb '09

09 Feb '09

# HG changeset patch # User john.levon(a)sun.com # Date 1233870901 28800 # Node ID 2c12bdf95e5e5f7d00b606df679364463555d76e # Parent 059167552cb467c107870c3b739438ca107116a8 Introduce virSaveLastError(), virFreeError() Allow applications to store a copy of the last error reported. Signed-off-by: John Levon <john.levon(a)sun.com> diff --git a/include/libvirt/virterror.h b/include/libvirt/virterror.h --- a/include/libvirt/virterror.h +++ b/include/libvirt/virterror.h @@ -172,8 +172,10 @@ typedef void (*virErrorFunc) (void *user */ virErrorPtr virGetLastError (void); +virErrorPtr virSaveLastError (void); void virResetLastError (void); void virResetError (virErrorPtr err); +void virFreeError (virErrorPtr err); virErrorPtr virConnGetLastError (virConnectPtr conn); void virConnResetLastError (virConnectPtr conn); diff --git a/src/libvirt_public.syms b/src/libvirt_public.syms --- a/src/libvirt_public.syms +++ b/src/libvirt_public.syms @@ -247,4 +247,10 @@ LIBVIRT_0.6.0 { } LIBVIRT_0.5.0; +LIBVIRT_0.6.1 { + global: + virFreeError; + virSaveLastError; +} LIBVIRT_0.6.0; + # .... define new API here using predicted next version number .... diff --git a/src/virterror.c b/src/virterror.c --- a/src/virterror.c +++ b/src/virterror.c @@ -286,6 +286,27 @@ virCopyLastError(virErrorPtr to) } /** + * virSaveLastError: + * + * Save the last error into a new error object. + * + * Returns a pointer to the copied error or NULL if allocation failed. + * It is the caller's responsibility to free the error with + * virFreeError(). + */ +virErrorPtr +virSaveLastError(void) +{ + virErrorPtr to; + + if (VIR_ALLOC(to) < 0) + return NULL; + + virCopyLastError(to); + return to; +} + +/** * virResetError: * @err: pointer to the virError to clean up * @@ -303,6 +324,18 @@ virResetError(virErrorPtr err) memset(err, 0, sizeof(virError)); } +/** + * virFreeError: + * @err: error to free + * + * Resets and frees the given error. + */ +void +virFreeError(virErrorPtr err) +{ + virResetError(err); + VIR_FREE(err); +} /** * virResetLastError:

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[libvirt] Leaky virsh?
by John Levon 09 Feb '09

09 Feb '09

Running virsh with the remote driver (as it always is on Solaris), it leaks pretty heavily: thewhip:~ # yes "start fewfewf" | virsh >/dev/null 2>&1 & [1] 6388 # prstat -c -p 6388 PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP 6388 root 10M 6788K sleep 59 0 0:00:02 0.2% virsh/1 Total: 1 processes, 1 lwps, load averages: 0.32, 0.12, 0.06 PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP 6388 root 11M 7104K sleep 59 0 0:00:02 0.3% virsh/1 Total: 1 processes, 1 lwps, load averages: 0.34, 0.12, 0.06 PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP 6388 root 11M 7160K sleep 59 0 0:00:02 0.3% virsh/1 Total: 1 processes, 1 lwps, load averages: 0.36, 0.13, 0.07 Can you reproduce on Linux anyone? regards john

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[libvirt] [PATCH/RFC]: don't ignore errors to save the domain status file
by Guido Günther 07 Feb '09

07 Feb '09

Hi, we currently don't report errors to save qemu's domain status file back to the caller. That was o.k. as long as the code was there for testing but now that the XML is being picked up on daemon restart we must handle these. The attached patch does that, although I'm not confident that it's enough. While we return error on device attach/unattach the device actually got attached/unattached already. Same is true for suspend/resume. A better solution would be to write out the new domain status into a temp file and simply call rename(2) on it when the attach/unattach succeeds and discard it if it fails. This would minimize the possible error conditions like disk full, missing permissions to write into that directory etc. Does this sound reasonable? O.k. to apply the attached version for now? Cheers, -- Guido

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