August 2010 - Devel - libvirt List Archives

Re: [libvirt] [PATCH] Do not use boot=on on IDE device
by Antoine Mercadal 04 Aug '10

04 Aug '10

Hello, Just a feedback about this patch https://www.redhat.com/archives/libvir-list/2010-July/msg00691.html submitted by Daniel Veillard : It works like a charm. Before applying it, I wasn't able to start some windows XP guest on KVM using IDE drives. Cheers -- Antoine Mercadal (+33) 06 23 00 84 04 « Le mot liberté n'admet, par définition, aucune restriction. »

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[libvirt] Release of libvirt-0.8.3
by Daniel Veillard 04 Aug '10

04 Aug '10

Nearly on time :-) It's available as usual from: ftp://libvirt.org/libvirt/ That's mostly a bug fix release exept for ESX 4.1 and vSphere support and the new APIs to allow easier hacking at the QEmu level. Features: - esx: Support vSphere 4.1 (Matthias Bolte) - Qemu arbitrary monitor commands. (Chris Lalancette) - Qemu Monitor API entry point. (Chris Lalancette) Documentation: - docs: Link wiki FAQ to main page (Cole Robinson) - Document the memory balloon device (Daniel P. Berrange) - man pages: update authors and copyright notice for libvirtd and virsh (Justin Clift) - Add openauth example to demonstrate a custom auth callback (Matthias Bolte) - docs: fix so generated .html files are removed with make clean (Justin Clift) - virsh: Fix man page syntax (Jiri Denemark) - html docs: added firewall explanation page by daniel berrange (Justin Clift) - libvirtd: add man page for libvirtd (Justin Clift) Portability: - Fix compile on i686. (Chris Lalancette) - daemon: dispatch.c should include stdio.h (and stdarg.h) (Ryota Ozaki) Bug fixes: - qemu: Fix PCI address allocation (Jiri Denemark) - Don't leak delay string when freeing virInterfaceBridgeDefs (Laine Stump) - qemu: don't lose error on setting monitor capabilities (Eric Blake) - Add iptables rule to fixup DHCP response checksum. (Laine Stump) - Fix the ACS checking in the PCI code. (Chris Lalancette) - Free up memballoon def. (Chris Lalancette) - Fix a bogus warning when parsing <hostdev> (Chris Lalancette) - Update ID after stopping a domain (Matthias Bolte) - openvzDomainCreateWithFlags: set domain id to the correct value (Jean-Baptiste Rouault) - xenapi: Update ID after starting a domain (Matthias Bolte) - esx: Update ID after starting a domain (Matthias Bolte) - Fix DMI uuid parsing. (Chris Lalancette) - Do not activate boot=on on devices when not using KVM (Daniel Veillard) - Fix a memory leak in the qemudBuildCommandLine. (Chris Lalancette) - esx: Fix freeing of heterogeneous lists (Matthias Bolte) - xen: fix logic bug (Eric Blake) - Eliminate memory leak in xenUnifiedDomainInfoListFree (Laine Stump) - lxc: Fix 'autostart' doesn't take effect actually (Ryota Ozaki) - Fix --with-xen-proxy related compile error (Matthias Bolte) - Fix a potential race in pciInitDevice. (Chris Lalancette) - Invert logic for checking for QEMU disk cache options (Daniel P. Berrange) - libvirt-guests: Don't throw errors if libvirtd is not installed (Jiri Denemark) - pciResetDevice: use inactive devices to determine safe reset (Chris Wright) - secaatest: Fix compilation (Matthias Bolte) - virt-aa-helper-test: Fix failure due to the new disk format probing option (Matthias Bolte) - virt-aa-helper: Make getopt accept the p option (Matthias Bolte) - virt-aa-helper: Fix return value of add_file_path (Matthias Bolte) - Fix SEGV on exit after domainEventDeregister() (Philipp Hahn) - pciSharesBusWithActive fails to find multiple devices on bus (Chris Wright) - Fix incorrect use of private data in remote driver (Daniel P. Berrange) - Set a stable & high MAC addr for guest TAP devices on host (Daniel P. Berrange) - Fix PCI address assignment if no IDE controller is present (Daniel P. Berrange) - lxc: force kill of init process by sending SIGKILL if needed (Ryota Ozaki) - Fix a NULL dereference in the case that the arg in question didn't exist. (Chris Lalancette) - Remove bogus free of static strings (Daniel P. Berrange) - Fix a deadlock in bi-directional p2p concurrent migration. (Chris Lalancette) - Make virsh setmaxmem balloon only when successful. (Chris Lalancette) - fsync new storage volumes even if new volume was copied. (Laine Stump) - Don't skip zero'ing end of volume file when inputvol is shorter than newvol (Laine Stump) - Always clear out the last_error in virshReportError. (Chris Lalancette) - CVE-2010-2242 Apply a source port mapping to virtual network masquerading (Daniel P. Berrange) - uml_driver: correct logic error in umlMonitorCommand (Jim Meyering) - qemuConnectMonitor: fix a bug that would have masked SELinux failure (Jim Meyering) - python: Fix IOErrorReasonCallback bindings (Cole Robinson) - cpuCompare: Fix crash on unexpected CPU XML (Jiri Denemark) - cpu: Fail when CPU type cannot be detected from XML (Jiri Denemark) - cpuCompare: Fix comparison of two host CPUs (Jiri Denemark) - Fix potential crash in QEMU monitor JSON impl (Daniel P. Berrange) Improvements: - OpenVZ: implement suspend/resume driver APIs (Jean-Baptiste Rouault) - esx: Set storage pool target path to host.mountInfo.path (Matthias Bolte) - esx: Make storage pool lookup by name and UUID more robust (Matthias Bolte) - esx: Restrict vpx:// to handle a single host in a vCenter (Matthias Bolte) - esx: Map some managed object types (Matthias Bolte) - esx: Parse the path of the URI (Matthias Bolte) - Make virsh -d check its input (Daniel Veillard) - esx: Switch from name to number checks in the subdrivers (Matthias Bolte) - esx: Improve blocked task detection and fix race condition (Matthias Bolte) - build: distribute libvirt_qemu.syms (Eric Blake) - build: restore operation of bit-rotted 'make cov' (Eric Blake) - qemu: virtio console support (Cole Robinson) - domain conf: Track <console> target type (Cole Robinson) - domain conf: char: Add an explicit targetType field (Cole Robinson) - domain conf: Rename character prop targetType -> deviceType (Cole Robinson) - docs: domain: Document virtio <channel> (Cole Robinson) - tests: Test qemuxml2xml when expected xml changes (Cole Robinson) - fix handling of PORT_PROFILE_RESPONSE_INPROGRESS netlink message (Gerhard Stenzel) - maint: turn on gcc logical-op checking (Eric Blake) - libvirt-guests: add reload, condrestart (Eric Blake) - libvirt-guests: enhance status (Eric Blake) - libvirt-guests: detect invalid arguments (Eric Blake) - qemu: Allow setting boot menu on/off (Cole Robinson) - qemu: Error on unsupported graphics config (Cole Robinson) - Force FLR on for buggy SR-IOV devices. (Chris Lalancette) - qemudDomainAttachHostPciDevice refactor to use new helpers (Chris Wright) - Add helpers qemuPrepareHostdevPCIDevice and qemuDomainReAttachHostdevDevices (Chris Wright) - qemuGetPciHostDeviceList take hostdev list directly (Chris Wright) - esx: Add vpx:// scheme to allow direct connection to a vCenter (Matthias Bolte) - esx: Don't ignore the vcenter query parameter (Matthias Bolte) - esx: Add autodetection for the SCSI controller model (Matthias Bolte) - esx: Allow 'vmpvscsi' as SCSI controller model (Matthias Bolte) - Add tests for the new Qemu namespace XML. (Chris Lalancette) - Qemu remote protocol. (Chris Lalancette) - Handle arbitrary qemu command-lines in qemuParseCommandLine. (Chris Lalancette) - Qemu arbitrary command-line arguments. (Chris Lalancette) - Add namespace callback hooks to domain_conf. (Chris Lalancette) - Remove erroneous setting of return value to errno. (Laine Stump) - Change virDirCreate to return -errno on failure. (Laine Stump) - Make virStorageBackendCopyToFD return -errno. (Laine Stump) - Change virFileOperation to return -errno (ie < 0) on error. (Laine Stump) - Re-arrange PCI device address assignment to match QEMU's default (Daniel P. Berrange) - Explicitly represent balloon device in XML and handle PCI address (Daniel P. Berrange) - Rearrange VGA/IDE controller address reservation (Daniel P. Berrange) - Use unsigned long in cmdSetmem. (Chris Lalancette) - Fix up inconsistent virsh option error reporting. (Chris Lalancette) - Use the extract backing store format in storage volume lookup (Daniel P. Berrange) - Rewrite qemu-img backing store format handling (Daniel P. Berrange) - Add ability to set a default driver name/type when parsing disks (Daniel P. Berrange) - Disable all disk probing in QEMU driver & add config option to re-enable (Daniel P. Berrange) - Pass security driver object into all security driver callbacks (Daniel P. Berrange) - Convert all disk backing store loops to shared helper API (Daniel P. Berrange) - Add an API for iterating over disk paths (Daniel P. Berrange) - Require format to be passed into virStorageFileGetMetadata (Daniel P. Berrange) - Refactor virStorageFileGetMetadataFromFD to separate functionality (Daniel P. Berrange) - Remove 'type' field from FileTypeInfo struct (Daniel P. Berrange) - Extract the backing store format as well as name, if available (Daniel P. Berrange) - RFC: Canonicalize block device paths (David Allan) - .gitignore: Ignore generated libvirtd docs (Cole Robinson) - esx: Make esxVI_*_Deserialize dynamically dispatched (Matthias Bolte) - qemu: Use -nodefconfig when probing for CPU models (Jiri Denemark) - Ensure we return the callback ID in python events binding (Daniel P. Berrange) - virsh: add new --details option to vol-list (Justin Clift) - Implement virsh managedsave-remove command. (Chris Lalancette) - cpu: Add new models from qemu's target-x86_64.conf (Jiri Denemark) - cpu: Add support for CPU vendor (Jiri Denemark) - cpuBaseline: Detect empty set of common features (Jiri Denemark) - cpuBaseline: Don't mess with the CPU returned by arch driver (Jiri Denemark) - Make html docs in non-srcdir build (Jiri Denemark) Cleanups: - Fix build error in virsh.c (Laine Stump) - Fix virsh error message when -d arg is not numeric (Eric Blake) - Fix a couple of typo in iSCSI backend (Aurelien ROUGEMONT) - Don't put a semicolon on the end of a VIR_ENUM_IMPL. (Chris Lalancette) - Remove duplicate </p> from downloads.html.in (Matthias Bolte) - storage: kill dead stores (Eric Blake) - qemu: kill some dead stores (Eric Blake) - network: kill dead store (Eric Blake) - esx: silence spurious compiler warning (Eric Blake) - build: fix 'make syntax-check' failure (Eric Blake) - lxc: Fix return values of veth.c functions (Ryota Ozaki) - maint: fix comment typos (Eric Blake) - Fix up confusing indentation in qemudDomainAttachHostPciDevice. (Chris Lalancette) - build: fix VPATH builds (Eric Blake) - virt-aa-helper: Ignore open errors again (Matthias Bolte) - qemu-api: avoid build failure (Eric Blake) - Fix .mailmap after accidental wrong committer address (Daniel P. Berrange) - Remove inappropriate use of VIR_ERR_NO_SUPPORT (Daniel P. Berrange) - Remove unused and bitrotting vshCommandOptStringList (Chris Lalancette) - Remove error checking after using vshMalloc. (Chris Lalancette) - Remove the "showerror" parameter from vshConnectionUsability. (Chris Lalancette) - Eliminate compiler warning due to gettext string with no format args (Laine Stump) - Fix build by removing unknown pod2man flag (Daniel P. Berrange) Thanks everybody for the help on this release ! Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

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Re: [libvirt] [RHEL6 PATCH] Correct cpuid flags and "model" fields, V2
by john cooper 04 Aug '10

04 Aug '10

A question arose in today's kvm meeting concerning any impact to libvirt from this change. I've discussed it with Cole and it seems to be a non-issue. But just to err on the side of caution, here's a summary: The current cpu model definition of "qemu64" upstream is problematic from kvm's perspective such that we need to modify it slightly (BZ justifications listed below). Doing so we've left the qemu64 definition as-is, but added "cpu64-rhel6" and "cpu64-rhel5" models which are now selected by default via "-M <machine>", for "RHEL 6.0.0 PC" and "RHEL 5.x.y PC" respectively. So the only issue would be libvirt invoking qemu with neither a "-cpu" nor "-M" argument (which defaults to qemu64) or explicitly requesting "-cpu qemu64". >From my discussion with Cole it appears the use cases where this may happen fall outside of routine/expected usage and would need to be explicitly requested by the user. However I wanted to call this out here in the event we're overlooking something. Thanks, -john http://post-office.corp.redhat.com/archives/rhvirt-patches/2010-July/msg011… http://post-office.corp.redhat.com/archives/rhvirt-patches/2010-July/msg008… john cooper wrote: > Addresses BZs: > > #618332 - CPUID_EXT_POPCNT enabled in qemu64 and qemu32 built-in models. > #613892 - [SR-IOV]VF device can not start on 32bit Windows2008 SP2 > > Summary: > > CPU feature flags for several processor definitions require correction > to accurately reflect the corresponding shipped silicon. In particular > overly conservative values for cpuid "model" fields cause disable of > MSI support in windows guests (BZ #613892). Also recent upstream changes > of qemu64's built-in definition enables POPCNT (for the benefit of TCG) > but risks kvm migration breakage (BZ #618332). The following patch > address these issues collectively. > > Changes relative to previous version: > > - drop of the "qemu32-rhel5" model as it appears to be unneeded. > > - rename of "qemu64-rhel?" to "cpu64-rhel?" as we're diverging from > upstream qemu64's definition but haven't migrated to kvm64 quite yet. > > - Correction of several fields for the (now) cpu64-rhel5 model. > > Further detail may be found in the associated mail thread common to > both BZ cases starting about here: > > http://post-office.corp.redhat.com/archives/rhvirt-patches/2010-July/msg008… > > Brew Build: > > https://brewweb.devel.redhat.com/taskinfo?taskID=2643552 > > Upstream status: > > BZ #618332 is a local, interim change and doesn't relate to upstream > concerns. Longer-term this qemu64 derived model would be displaced > by kvm64. The update of cpu definitions (BZ #613892) however needs > to be pushed upstream upon validation in rhel6. We're currently the > sole users of the new cpu models which fosters this inverted process. -- john.cooper(a)redhat.com

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[libvirt] [PATCH] qemu: Fix PCI address allocation
by Jiri Denemark 04 Aug '10

04 Aug '10

When attaching a PCI device which doesn't explicitly set its PCI address, libvirt allocates the address automatically. The problem is that when checking which PCI address is unused, we only check for those with slot number higher than the highest slot number ever used. Thus attaching/detaching such device several times in a row (31 is the theoretical limit, less then 30 tries are enough in practise) makes any further device attachment fail. Furthermore, attaching a device with predefined PCI address to 0:0:31 immediately forbids attachment of any PCI device without explicit address. This patch changes the logic so that we always check all PCI addresses before we say there is no PCI address available. --- src/qemu/qemu_conf.c | 14 ++++---------- 1 files changed, 4 insertions(+), 10 deletions(-) diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index 57bc02f..eaebcc1 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -2055,8 +2055,6 @@ qemuAssignDeviceAliases(virDomainDefPtr def, unsigned long long qemuCmdFlags) #define QEMU_PCI_ADDRESS_LAST_SLOT 31 struct _qemuDomainPCIAddressSet { virHashTablePtr used; - int nextslot; - /* XXX add domain, bus later when QEMU allows > 1 */ }; @@ -2148,9 +2146,6 @@ int qemuDomainPCIAddressReserveAddr(qemuDomainPCIAddressSetPtr addrs, return -1; } - if (dev->addr.pci.slot > addrs->nextslot) - addrs->nextslot = dev->addr.pci.slot + 1; - return 0; } @@ -2217,7 +2212,7 @@ int qemuDomainPCIAddressSetNextAddr(qemuDomainPCIAddressSetPtr addrs, { int i; - for (i = addrs->nextslot ; i <= QEMU_PCI_ADDRESS_LAST_SLOT ; i++) { + for (i = 0 ; i <= QEMU_PCI_ADDRESS_LAST_SLOT ; i++) { virDomainDeviceInfo maybe; char *addr; @@ -2228,13 +2223,14 @@ int qemuDomainPCIAddressSetNextAddr(qemuDomainPCIAddressSetPtr addrs, addr = qemuPCIAddressAsString(&maybe); - VIR_DEBUG("Allocating PCI addr %s", addr); - if (virHashLookup(addrs->used, addr)) { + VIR_DEBUG("PCI addr %s already in use", addr); VIR_FREE(addr); continue; } + VIR_DEBUG("Allocating PCI addr %s", addr); + if (virHashAddEntry(addrs->used, addr, addr) < 0) { VIR_FREE(addr); return -1; @@ -2245,8 +2241,6 @@ int qemuDomainPCIAddressSetNextAddr(qemuDomainPCIAddressSetPtr addrs, dev->addr.pci.bus = 0; dev->addr.pci.slot = i; - addrs->nextslot = i + 1; - return 0; } -- 1.7.2

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[libvirt] [PATCH] OpenVZ: implement suspend/resume driver APIs
by Jean-Baptiste Rouault 04 Aug '10

04 Aug '10

--- src/openvz/openvz_driver.c | 84 ++++++++++++++++++++++++++++++++++++++++++- 1 files changed, 82 insertions(+), 2 deletions(-) diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c index e5bbdd0..bdc0e92 100644 --- a/src/openvz/openvz_driver.c +++ b/src/openvz/openvz_driver.c @@ -503,6 +503,86 @@ static void openvzSetProgramSentinal(const char **prog, const char *key) } } +static int openvzDomainSuspend(virDomainPtr dom) { + struct openvz_driver *driver = dom->conn->privateData; + virDomainObjPtr vm; + const char *prog[] = {VZCTL, "--quiet", "chkpnt", PROGRAM_SENTINAL, "--suspend", NULL}; + int ret = -1; + + openvzDriverLock(driver); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + openvzDriverUnlock(driver); + + if (!vm) { + openvzError(VIR_ERR_INVALID_DOMAIN, "%s", + _("no domain with matching uuid")); + goto cleanup; + } + + if (!virDomainObjIsActive(vm)) { + openvzError(VIR_ERR_OPERATION_INVALID, "%s", + _("Domain is not running")); + goto cleanup; + } + + if (vm->state != VIR_DOMAIN_PAUSED) { + openvzSetProgramSentinal(prog, vm->def->name); + if (virRun(prog, NULL) < 0) { + openvzError(VIR_ERR_OPERATION_FAILED, "%s", + _("Suspend operation failed")); + goto cleanup; + } + vm->state = VIR_DOMAIN_PAUSED; + } + + ret = 0; + +cleanup: + if (vm) + virDomainObjUnlock(vm); + return ret; +} + +static int openvzDomainResume(virDomainPtr dom) { + struct openvz_driver *driver = dom->conn->privateData; + virDomainObjPtr vm; + const char *prog[] = {VZCTL, "--quiet", "chkpnt", PROGRAM_SENTINAL, "--resume", NULL}; + int ret = -1; + + openvzDriverLock(driver); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + openvzDriverUnlock(driver); + + if (!vm) { + openvzError(VIR_ERR_INVALID_DOMAIN, "%s", + _("no domain with matching uuid")); + goto cleanup; + } + + if (!virDomainObjIsActive(vm)) { + openvzError(VIR_ERR_OPERATION_INVALID, "%s", + _("Domain is not running")); + goto cleanup; + } + + if (vm->state == VIR_DOMAIN_PAUSED) { + openvzSetProgramSentinal(prog, vm->def->name); + if (virRun(prog, NULL) < 0) { + openvzError(VIR_ERR_OPERATION_FAILED, "%s", + _("Resume operation failed")); + goto cleanup; + } + vm->state = VIR_DOMAIN_RUNNING; + } + + ret = 0; + +cleanup: + if (vm) + virDomainObjUnlock(vm); + return ret; +} + static int openvzDomainShutdown(virDomainPtr dom) { struct openvz_driver *driver = dom->conn->privateData; virDomainObjPtr vm; @@ -1491,8 +1571,8 @@ static virDriver openvzDriver = { openvzDomainLookupByID, /* domainLookupByID */ openvzDomainLookupByUUID, /* domainLookupByUUID */ openvzDomainLookupByName, /* domainLookupByName */ - NULL, /* domainSuspend */ - NULL, /* domainResume */ + openvzDomainSuspend, /* domainSuspend */ + openvzDomainResume, /* domainResume */ openvzDomainShutdown, /* domainShutdown */ openvzDomainReboot, /* domainReboot */ openvzDomainShutdown, /* domainDestroy */ -- 1.7.0.4

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[libvirt] [PATCH] Don't leak delay string when freeing virInterfaceBridgeDefs
by Laine Stump 03 Aug '10

03 Aug '10

I noticed this while looking into checking the default bridge delay to 0. --- src/conf/interface_conf.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/src/conf/interface_conf.c b/src/conf/interface_conf.c index 6430f7a..b24526f 100644 --- a/src/conf/interface_conf.c +++ b/src/conf/interface_conf.c @@ -84,6 +84,7 @@ void virInterfaceDefFree(virInterfaceDefPtr def) switch (def->type) { case VIR_INTERFACE_TYPE_BRIDGE: + VIR_FREE(def->data.bridge.delay); for (i = 0;i < def->data.bridge.nbItf;i++) { if (def->data.bridge.itf[i] == NULL) break; /* to cope with half parsed data on errors */ -- 1.7.2

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[libvirt] [PATCH] Fix build error in virsh.c
by Laine Stump 03 Aug '10

03 Aug '10

I just pushed this under the trivial rule... Another gettext string with no format args sent to printf as a format string. --- tools/virsh.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 2ccf08b..c0ee3ee 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -11022,7 +11022,7 @@ vshParseArgv(vshControl *ctl, int argc, char **argv) switch (arg) { case 'd': if (virStrToLong_i(optarg, NULL, 10, &ctl->debug) < 0) { - vshError(ctl, _("option -d takes a numeric argument")); + vshError(ctl, "%s", _("option -d takes a numeric argument")); exit(EXIT_FAILURE); } break; -- 1.7.2

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Re: [libvirt] [virt-tools-list] Add a manually configured XEN
by Michal Novotny 03 Aug '10

03 Aug '10

Hi, I can see the point Bernhard. It seems that libvirt is not aware of this guest. Well, if virsh (part of libvirt) is seeing the guest only then the guest is running then you need to create a configuration for that in the libvirt itself. I know there's something like: virsh domxml-from-native <format> <config> but I never used it so I don't know about the config and format and how does it work. Please try asking the libvirt guys on the libvirt list (I put this list in CC now). Michal On 08/03/2010 02:59 PM, Bernhard Suttner wrote: > Hi, > > manually means, I did not use virt-install or the virt-manager to add the XEN domU to the dom0. I set it up manually (created configuration manually, added disk images and so on manually, ....). > > virsh list --all does show the domU BUT only if I start it manually with xm create domU. If the domU does not run, it does not appear. Other virtual manchines (domU) which I created with virt-manager or virt-install do also appear, if the domU is currently not up (stopped). > > Best regards, > Bernhard > > -----Ursprüngliche Nachricht----- > Von: Michal Novotny [mailto:minovotn@redhat.com] > Gesendet: Dienstag, 3. August 2010 14:17 > An: Bernhard Suttner > Cc: virt-tools-list(a)redhat.com > Betreff: Re: AW: [virt-tools-list] Add a manually configured XEN > > On 08/03/2010 02:14 PM, Bernhard Suttner wrote: > >> Hi, >> >> thanks. But this did not work. I think, this option does only connect to another dom0 - means, to another xen host system. I want, that virt-manager does show the domU (the guest) of the local xen installation which I manually added to this system. >> >> > Why do you mean that is manually added to the system? Does `virsh list > --all` show the guest? > > Regards, > Michal > > >> Best regards, >> Bernhard >> >> -----Ursprüngliche Nachricht----- >> Von: Michal Novotny [mailto:minovotn@redhat.com] >> Gesendet: Dienstag, 3. August 2010 10:51 >> An: Bernhard Suttner >> Cc: virt-tools-list(a)redhat.com >> Betreff: Re: [virt-tools-list] Add a manually configured XEN >> >> Hi Bernhard, >> I'm not the expert but when you start virt-manager you can go to the >> File -> Add connection and add the connection there. The connection >> should be persistent and just connecting to it should fail when xend is >> not running AFAIK. >> >> Hope this helps, >> Michal >> >> On 08/02/2010 09:13 PM, Bernhard Suttner wrote: >> >> >>> Hi, >>> >>> I am using XEN and the virt-manager (which use libvirt). I have configured the XEN domU manually within the shell. If I start the domU with xm create config then the virtual machine appears in the virt-manager. If I stop the XEN it will disappear. How could I add the XEN to the virt-manager like all the other (with virt-manager) created domU that I have it listed with the virt-manager and could start it from GUI? >>> >>> Best regards, >>> Bernhard Suttner >>> >>> _______________________________________________ >>> virt-tools-list mailing list >>> virt-tools-list(a)redhat.com >>> https://www.redhat.com/mailman/listinfo/virt-tools-list >>> >>> >>> >> >> > > -- Michal Novotny<minovotn(a)redhat.com>, RHCE Virtualization Team (xen userspace), Red Hat

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[libvirt] [PATCH] [RFC] ISCSI transport protocol support in libvirt
by Aurelien ROUGEMONT 03 Aug '10

03 Aug '10

Hi everyone, This my first post on this list Context : Some days ago I have decided to use infiniband for ISCSI streams. Infiniband adds a new wonderful transport protocol : ISER. This protocols is added to the well known the default TCP. (NB: ISER = ISCSI + RDMA). I could not see any ISCSI transport protocol modification support in libivirt (the default protocol tcp is even hardcoded in the regex) What i have done : - did the shell testing for the iscsiadm - the attached patch that corrects 2 typos in the original code and switches completely the iscsi transport protocol from tcp to iser (which is not ideal at all) What should be done (imho): - add iscsi transport protocol support (using my patch as a basis) - add a new XML property/whatever_fits_the_projects_policy to the storagepool object that allows user to pick the iscsi transport protocol (default is tcp) I was thinking of having something like : <pool type="iscsi"> <name>volumename</name> <source> <host name="1.2.3.4"/> <device path="IQNOFTARGET"/> <transport protocol="iser"/> </source> <target> <path>/dev/disk/by-path</path> </target> </pool> Any comment on this ? Any help on the XML part ? Best regards, Aurélien NB: the current iscsi transport protocols available are : tcp(default), iser, qla4xxx, bnx2, and icxgb3i. PS: i'm still doing extensive testing of my patch !DSPAM:4c46f49d90977882820711!

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Re: [libvirt] Extensions to the libvirt Storage API
by Shyam Iyer 03 Aug '10

03 Aug '10

On 07/28/2010 01:24 PM, Daniel P. Berrange wrote: > > >>>> > >>>> > >>> We explicitly don't support external driver plugins in libvirt for a > >>> couple of reasons > >>> > >>> - We don't want to support use of closed source plugins > >>> - We don't want to guarentee stability of any aspect of > >>> libvirt's internal API > >>> > >>> We would like to see support for the various vendor specific iSCSI > >>> extensions to allow volume creation/deletion, but want that code to > >>> be part of the libvirt codebase. > >>> The APIs can also invoke standard snmpget/set methods to talk to the target. All standard distributions ship with a net-snmp implementation. Would an implementation of the APIs that invokes snmpset/gets be an amenable solution? > Namespace clash ! The virDomainSnapshot APIs are per-hypervisor. They > do snapshotting of the guest VM (including its storage). > > I was actually just talking about the storage backends though which > can do snapshots independently of any hypervisor. See > the<backingstorage> > element here: > > http://libvirt.org/formatstorage.html#StorageVolBacking > > This is already implemented with the LVM pool doing LVM snapshots. We > also use it for external qcow2 backing files. > There are certain benefits of allowing snapshots/backup to happen in the storage and thereby save CPU cycles. It becomes even more visible with large TB storage where in a simple qcow2 backup copy could take a long time.

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