August 2011 - Devel - libvirt List Archives

[libvirt] Preparing for next release 0.9.5
by Daniel Veillard 02 Sep '11

02 Sep '11

To try to keep good habits and stay predictable I would suggest to enter development freeze this week-end to plan an upstream release on Friday 2nd Sep or early the following week. I may also switch the libvirt.org server to a new box at that time, but it's not really urgent, th new box would be less powerful, but with overall better network reliability. 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/

1 1

[libvirt] [RFC] NUMA topology specification
by Bharata B Rao 02 Sep '11

02 Sep '11

Hi, qemu supports specification of NUMA topology on command line using -numa option. -numa node[,mem=size][,cpus=cpu[-cpu]][,nodeid=node] I see that there is no way to specify such NUMA topology in libvirt XML. Are there plans to add support for NUMA topology specification ? Is anybody already working on this ? If not I would like to add this support for libvirt. Currently the topology specification available in libvirt ( <topology sockets='1' cores='2' threads='1'/>) translates to "-smp sockets=1,cores=2,threads=1" option of qemu. There is not equivalent in libvirt that could generate -numa command line option of qemu. How about something like this ? (OPTION 1) <cpu> ... <numa nodeid='node' cpus='cpu[-cpu]' mem='size'> ... </cpu> And we could specify multiple such lines, one for each node. -numa and -smp options in qemu do not work all that well since they are parsed independent of each other and one could specify a cpu set with -numa option that is incompatible with sockets,cores and threads specified on -smp option. This should be fixed in qemu, but given that such a problem has been observed, should libvirt tie the specification of numa and smp (sockets,threads,cores) together so that one is forced to specify only valid combinations of nodes and cpus in libvirt ? May be something like this: (OPTION 2) <cpu> ... <topology sockets='1' cores='2' threads='1' nodeid='0' cpus='0-1' mem='size'> <topology sockets='1' cores='2' threads='1' nodeid='1' cpus='2-3' mem='size'> ... </cpu This should result in a 2 node system with each node having 1 socket with 2 cores. Comments, suggestions ? Regards, Bharata. -- http://bharata.sulekha.com/blog/posts.htm, http://raobharata.wordpress.com/

4 11

[libvirt] [PATCH] start: allow discarding managed save
by Eric Blake 02 Sep '11

02 Sep '11

There have been several instances of people having problems with a broken managed save file causing 'virsh start' to fail, and not being aware that they could use 'virsh managedsave-remove dom' to fix things. Making it possible to do this as part of starting a domain makes the same functionality easier to find, and one less API call. * include/libvirt/libvirt.h.in (VIR_DOMAIN_START_FORCE_BOOT): New flag. * src/libvirt.c (virDomainCreateWithFlags): Document it. * src/qemu/qemu_driver.c (qemuDomainObjStart): Alter signature. (qemuAutostartDomain, qemuDomainStartWithFlags): Update callers. * tools/virsh.c (cmdStart): Expose it in virsh. * tools/virsh.pod (start): Document it. --- include/libvirt/libvirt.h.in | 1 + src/libvirt.c | 3 ++ src/qemu/qemu_driver.c | 50 +++++++++++++++++++++++++---------------- tools/virsh.c | 7 +++++- tools/virsh.pod | 5 ++- 5 files changed, 43 insertions(+), 23 deletions(-) diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in index 53a2f7d..c51a5b9 100644 --- a/include/libvirt/libvirt.h.in +++ b/include/libvirt/libvirt.h.in @@ -236,6 +236,7 @@ typedef enum { VIR_DOMAIN_START_PAUSED = 1 << 0, /* Launch guest in paused state */ VIR_DOMAIN_START_AUTODESTROY = 1 << 1, /* Automatically kill guest when virConnectPtr is closed */ VIR_DOMAIN_START_BYPASS_CACHE = 1 << 2, /* Avoid file system cache pollution */ + VIR_DOMAIN_START_FORCE_BOOT = 1 << 3, /* Boot, discarding any managed save */ } virDomainCreateFlags; diff --git a/src/libvirt.c b/src/libvirt.c index 65a099b..80c8b7c 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -7081,6 +7081,9 @@ error: * the file, or fail if it cannot do so for the given system; this can allow * less pressure on file system cache, but also risks slowing loads from NFS. * + * If the VIR_DOMAIN_START_FORCE_BOOT flag is set, then any managed save + * file for this domain is discarded, and the domain boots from scratch. + * * Returns 0 in case of success, -1 in case of error */ int diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index f21122d..5033998 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -120,9 +120,7 @@ static int qemudShutdown(void); static int qemuDomainObjStart(virConnectPtr conn, struct qemud_driver *driver, virDomainObjPtr vm, - bool start_paused, - bool autodestroy, - bool bypass_cache); + unsigned int flags); static int qemudDomainGetMaxVcpus(virDomainPtr dom); @@ -135,11 +133,16 @@ struct qemuAutostartData { }; static void -qemuAutostartDomain(void *payload, const void *name ATTRIBUTE_UNUSED, void *opaque) +qemuAutostartDomain(void *payload, const void *name ATTRIBUTE_UNUSED, + void *opaque) { virDomainObjPtr vm = payload; struct qemuAutostartData *data = opaque; virErrorPtr err; + int flags = 0; + + if (data->driver->autoStartBypassCache) + flags |= VIR_DOMAIN_START_BYPASS_CACHE; virDomainObjLock(vm); virResetLastError(); @@ -152,9 +155,7 @@ qemuAutostartDomain(void *payload, const void *name ATTRIBUTE_UNUSED, void *opaq } else { if (vm->autostart && !virDomainObjIsActive(vm) && - qemuDomainObjStart(data->conn, data->driver, vm, - false, false, - data->driver->autoStartBypassCache) < 0) { + qemuDomainObjStart(data->conn, data->driver, vm, flags) < 0) { err = virGetLastError(); VIR_ERROR(_("Failed to autostart VM '%s': %s"), vm->def->name, @@ -4441,12 +4442,14 @@ static int qemuDomainObjStart(virConnectPtr conn, struct qemud_driver *driver, virDomainObjPtr vm, - bool start_paused, - bool autodestroy, - bool bypass_cache) + unsigned int flags) { int ret = -1; char *managed_save; + bool start_paused = (flags & VIR_DOMAIN_START_PAUSED) != 0; + bool autodestroy = (flags & VIR_DOMAIN_START_AUTODESTROY) != 0; + bool bypass_cache = (flags & VIR_DOMAIN_START_BYPASS_CACHE) != 0; + bool force_boot = (flags & VIR_DOMAIN_START_FORCE_BOOT) != 0; /* * If there is a managed saved state restore it instead of starting @@ -4458,13 +4461,22 @@ qemuDomainObjStart(virConnectPtr conn, goto cleanup; if (virFileExists(managed_save)) { - ret = qemuDomainObjRestore(conn, driver, vm, managed_save, - bypass_cache); + if (force_boot) { + if (unlink(managed_save) < 0) { + virReportSystemError(errno, + _("cannot remove managed save file %s"), + managed_save); + goto cleanup; + } + } else { + ret = qemuDomainObjRestore(conn, driver, vm, managed_save, + bypass_cache); - if ((ret == 0) && (unlink(managed_save) < 0)) - VIR_WARN("Failed to remove the managed state %s", managed_save); + if ((ret == 0) && (unlink(managed_save) < 0)) + VIR_WARN("Failed to remove the managed state %s", managed_save); - goto cleanup; + goto cleanup; + } } ret = qemuProcessStart(conn, driver, vm, NULL, start_paused, @@ -4493,7 +4505,8 @@ qemuDomainStartWithFlags(virDomainPtr dom, unsigned int flags) virCheckFlags(VIR_DOMAIN_START_PAUSED | VIR_DOMAIN_START_AUTODESTROY | - VIR_DOMAIN_START_BYPASS_CACHE, -1); + VIR_DOMAIN_START_BYPASS_CACHE | + VIR_DOMAIN_START_FORCE_BOOT, -1); qemuDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, dom->uuid); @@ -4515,10 +4528,7 @@ qemuDomainStartWithFlags(virDomainPtr dom, unsigned int flags) goto endjob; } - if (qemuDomainObjStart(dom->conn, driver, vm, - (flags & VIR_DOMAIN_START_PAUSED) != 0, - (flags & VIR_DOMAIN_START_AUTODESTROY) != 0, - (flags & VIR_DOMAIN_START_BYPASS_CACHE) != 0) < 0) + if (qemuDomainObjStart(dom->conn, driver, vm, flags) < 0) goto endjob; ret = 0; diff --git a/tools/virsh.c b/tools/virsh.c index 15b9bdd..49034ae 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -1537,9 +1537,12 @@ static const vshCmdOptDef opts_start[] = { {"console", VSH_OT_BOOL, 0, N_("attach to console after creation")}, #endif {"paused", VSH_OT_BOOL, 0, N_("leave the guest paused after creation")}, - {"autodestroy", VSH_OT_BOOL, 0, N_("automatically destroy the guest when virsh disconnects")}, + {"autodestroy", VSH_OT_BOOL, 0, + N_("automatically destroy the guest when virsh disconnects")}, {"bypass-cache", VSH_OT_BOOL, 0, N_("avoid file system cache when loading")}, + {"force-boot", VSH_OT_BOOL, 0, + N_("force fresh boot by discarding any managed save")}, {NULL, 0, 0, NULL} }; @@ -1572,6 +1575,8 @@ cmdStart(vshControl *ctl, const vshCmd *cmd) flags |= VIR_DOMAIN_START_AUTODESTROY; if (vshCommandOptBool(cmd, "bypass-cache")) flags |= VIR_DOMAIN_START_BYPASS_CACHE; + if (vshCommandOptBool(cmd, "force-boot")) + flags |= VIR_DOMAIN_START_FORCE_BOOT; /* Prefer older API unless we have to pass a flag. */ if ((flags ? virDomainCreateWithFlags(dom, flags) diff --git a/tools/virsh.pod b/tools/virsh.pod index 81d7a1e..2cd0f73 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -890,7 +890,7 @@ The exact behavior of a domain when it shuts down is set by the I<on_shutdown> parameter in the domain's XML definition. =item B<start> I<domain-name> [I<--console>] [I<--paused>] [I<--autodestroy>] -[I<--bypass-cache>] +[I<--bypass-cache>] [I<--force-boot>] Start a (previously defined) inactive domain, either from the last B<managedsave> state, or via a fresh boot if no managedsave state is @@ -901,7 +901,8 @@ If I<--autodestroy> is requested, then the guest will be automatically destroyed when virsh closes its connection to libvirt, or otherwise exits. If I<--bypass-cache> is specified, and managedsave state exists, the restore will avoid the file system cache, although this may slow -down the operation. +down the operation. If I<--force-boot> is specified, then any +managedsave state is discarded and a fresh boot occurs. =item B<suspend> I<domain-id> -- 1.7.4.4

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[libvirt] [PATCH] reserve slot 1 on pci bus0
by Wen Congyang 02 Sep '11

02 Sep '11

After supporting multi function pci device, we only reserve function 1 on slot 1. The user can use the other function on slot 1 in the xml config file. We should detect this wrong usage. --- src/qemu/qemu_command.c | 12 +++++++++--- 1 files changed, 9 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 287ad8d..4b5734c 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1072,6 +1072,7 @@ qemuAssignDevicePCISlots(virDomainDefPtr def, qemuDomainPCIAddressSetPtr addrs) int i; bool reservedIDE = false; bool reservedVGA = false; + int function; /* Host bridge */ if (qemuDomainPCIAddressReserveSlot(addrs, 0) < 0) @@ -1107,9 +1108,14 @@ qemuAssignDevicePCISlots(virDomainDefPtr def, qemuDomainPCIAddressSetPtr addrs) /* PIIX3 (ISA bridge, IDE controller, something else unknown, USB controller) * hardcoded slot=1, multifunction device */ - if (!reservedIDE && - qemuDomainPCIAddressReserveSlot(addrs, 1) < 0) - goto error; + for (function = 0; function <= QEMU_PCI_ADDRESS_LAST_FUNCTION; function++) { + if (function == 1 && reservedIDE) + /* we have reserved this pci address */ + continue; + + if (qemuDomainPCIAddressReserveFunction(addrs, 1, function) < 0) + goto error; + } /* First VGA is hardcoded slot=2 */ if (def->nvideos > 0) { -- 1.7.1

2 4

[libvirt] [PATCH] lxc: do not require 'ifconfig' or 'ipconfig' in container
by Scott Moser 02 Sep '11

02 Sep '11

Currently, the lxc implementation invokes 'ip' and 'ifconfig' commands inside a container using 'virRun'. That has the side effect of requiring those commands to be present and to function in a manner consistent with the usage. Some small roots (such as ttylinux) may not have 'ip' or 'ifconfig'. This patch replaces the use of these commands with usage of netdevice. The result is that lxc containers do not have to implement those commands, and lxc in libvirt is only dependent on the netdevice interface. I've tested this patch locally against the ubuntu libvirt version enough to verify its generally sane. I attempted to build upstream today, but failed with: /usr/bin/ld: ../src/.libs/libvirt_driver_qemu.a(libvirt_driver_qemu_la-qemu_domain.o): undefined reference to symbol 'xmlXPathRegisterNs@@LIBXML2_2.4.30 Thats probably a local issue only, but I wanted to get this patch up and see what others thought of it. This is ubuntu bug https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/828211 . diff --git a/src/lxc/veth.c b/src/lxc/veth.c index 34cb804..c24df91 100644 --- a/src/lxc/veth.c +++ b/src/lxc/veth.c @@ -12,8 +12,11 @@ #include <config.h> +#include <linux/sockios.h> +#include <net/if.h> #include <string.h> #include <stdio.h> +#include <sys/ioctl.h> #include <sys/types.h> #include <sys/wait.h> @@ -186,41 +189,49 @@ int vethDelete(const char *veth) * @veth: name of veth device * @upOrDown: 0 => down, 1 => up * - * Enables a veth device using the ifconfig command. A NULL inetAddress - * will cause it to be left off the command line. + * Enables a veth device using SIOCSIFFLAGS * - * Returns 0 on success or -1 in case of error + * Returns 0 on success, -1 on failure, with errno set */ int vethInterfaceUpOrDown(const char* veth, int upOrDown) { - int rc; - const char *argv[] = {"ifconfig", veth, NULL, NULL}; - int cmdResult = 0; + struct ifreq ifr; + int fd, ret; - if (0 == upOrDown) - argv[2] = "down"; - else - argv[2] = "up"; + if ((fd = socket(PF_PACKET, SOCK_DGRAM, 0)) == -1) + return(-1); - rc = virRun(argv, &cmdResult); + memset(&ifr, 0, sizeof(struct ifreq)); - if (rc != 0 || - (WIFEXITED(cmdResult) && WEXITSTATUS(cmdResult) != 0)) { - if (0 == upOrDown) + if (virStrcpyStatic(ifr.ifr_name, veth) == NULL) { + errno = EINVAL; + return -1; + } + + if ((ret = ioctl(fd, SIOCGIFFLAGS, &ifr)) == 0) { + if (upOrDown) + ifr.ifr_flags |= IFF_UP; + else + ifr.ifr_flags &= ~(IFF_UP | IFF_RUNNING); + + ret = ioctl(fd, SIOCSIFFLAGS, &ifr); + } + + close(fd); + if (ret == -1) + if (upOrDown == 0) /* * Prevent overwriting an error log which may be set * where an actual failure occurs. */ - VIR_DEBUG("Failed to disable '%s' (%d)", - veth, WEXITSTATUS(cmdResult)); + VIR_DEBUG("Failed to disable '%s'", veth); else vethError(VIR_ERR_INTERNAL_ERROR, - _("Failed to enable '%s' (%d)"), - veth, WEXITSTATUS(cmdResult)); - rc = -1; - } + _("Failed to enable '%s'"), veth); + else + ret = 0; - return rc; + return(ret); } /** @@ -279,17 +290,29 @@ int setMacAddr(const char* iface, const char* macaddr) * @iface: name of device * @new: new name of @iface * - * Changes the name of the given device with the - * given new name using this command: - * ip link set @iface name @new + * Changes the name of the given device. * - * Returns 0 on success or -1 in case of error + * Returns 0 on success, -1 on failure with errno set. */ int setInterfaceName(const char* iface, const char* new) { - const char *argv[] = { - "ip", "link", "set", iface, "name", new, NULL - }; + struct ifreq ifr; + int fd = socket(PF_PACKET, SOCK_DGRAM, 0); - return virRun(argv, NULL); + memset(&ifr, 0, sizeof(struct ifreq)); + + if (virStrcpyStatic(ifr.ifr_name, iface) == NULL) { + errno = EINVAL; + return -1; + } + + if (virStrcpyStatic(ifr.ifr_newname, new) == NULL) { + errno = EINVAL; + return -1; + } + + if (ioctl(fd, SIOCSIFNAME, &ifr)) + return -1; + + return 0; }

4 3

[libvirt] [RFC] Create ptmx as a device
by Serge Hallyn 02 Sep '11

02 Sep '11

Hi, I'm seeing an issue with udev and libvirt-lxc. Libvirt-lxc creates /dev/ptmx as a symlink to /dev/pts/ptmx. When udev starts up, it checks the device type, sees ptmx is 'not right', and replaces it with a 'proper' ptmx. In lxc, /dev/ptmx is bind-mounted from /dev/pts/ptmx instead of being symlinked, so udev sees the right device type and leaves it alone. A patch like the following seems to work for me. Would there be any objections to this? >From 4c5035de52de7e06a0de9c5d0bab8c87a806cba7 Mon Sep 17 00:00:00 2001 From: Ubuntu <ubuntu(a)domU-12-31-39-14-F0-B3.compute-1.internal> Date: Wed, 31 Aug 2011 18:15:54 +0000 Subject: [PATCH 1/1] make ptmx a bind mount rather than symlink udev on some systems checks the device type of /dev/ptmx, and replaces it if not as expected. The symlink created by libvirt-lxc therefore gets replaced. By creating it as a bind mount, the device type is correct and udev leaves it alone. Signed-off-by: Serge Hallyn <serge.hallyn(a)canonical.com> --- src/lxc/lxc_container.c | 20 ++++++++++---------- 1 files changed, 10 insertions(+), 10 deletions(-) diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c index e425328..6991aec 100644 --- a/src/lxc/lxc_container.c +++ b/src/lxc/lxc_container.c @@ -543,18 +543,18 @@ static int lxcContainerPopulateDevices(void) } } + dev_t dev = makedev(LXC_DEV_MAJ_TTY, LXC_DEV_MIN_PTMX); + if (mknod("/dev/ptmx", S_IFCHR, dev) < 0 || + chmod("/dev/ptmx", 0666)) { + virReportSystemError(errno, "%s", + _("Failed to make device /dev/ptmx")); + return -1; + } + if (access("/dev/pts/ptmx", W_OK) == 0) { - if (symlink("/dev/pts/ptmx", "/dev/ptmx") < 0) { - virReportSystemError(errno, "%s", - _("Failed to create symlink /dev/ptmx to /dev/pts/ptmx")); - return -1; - } - } else { - dev_t dev = makedev(LXC_DEV_MAJ_TTY, LXC_DEV_MIN_PTMX); - if (mknod("/dev/ptmx", S_IFCHR, dev) < 0 || - chmod("/dev/ptmx", 0666)) { + if (mount("/dev/pts/ptmx", "/dev/ptmx", "ptmx", MS_BIND, NULL) < 0) { virReportSystemError(errno, "%s", - _("Failed to make device /dev/ptmx")); + _("Failed to bind-mount /dev/ptmx to /dev/pts/ptmx")); return -1; } } -- 1.7.5.4

4 6

[libvirt] [PATCH 1/2] BlockJob: Bandwidth parameter is in MB when using text monitor
by Adam Litke 02 Sep '11

02 Sep '11

Due to an unfortunate precedent in qemu, the units for the bandwidth parameter to block_job_set_speed are different between the text monitor and the qmp monitor. While the qmp monitor uses bytes/s, the text monitor expects MB/s. Correct the units for the text interface. Signed-off-by: Adam Litke <agl(a)us.ibm.com> --- src/qemu/qemu_monitor_text.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/src/qemu/qemu_monitor_text.c b/src/qemu/qemu_monitor_text.c index f37c98c..854ee7f 100644 --- a/src/qemu/qemu_monitor_text.c +++ b/src/qemu/qemu_monitor_text.c @@ -3067,8 +3067,7 @@ int qemuMonitorTextBlockJob(qemuMonitorPtr mon, ret = virAsprintf(&cmd, "%s", cmd_name); } else if (mode == BLOCK_JOB_SPEED) { cmd_name = "block_job_set_speed"; - ret = virAsprintf(&cmd, "%s %s %llu", cmd_name, device, - bandwidth * 1024ULL * 1024ULL); + ret = virAsprintf(&cmd, "%s %s %luM", cmd_name, device, bandwidth); } else if (mode == BLOCK_JOB_PULL) { cmd_name = "block_stream"; ret = virAsprintf(&cmd, "%s %s", cmd_name, device); -- 1.7.3

3 4

[libvirt] [PATCHv3 00/43] cleaned up snapshot series
by Eric Blake 01 Sep '11

01 Sep '11

As promised, here is my v3, which includes all the self-replies I was scattering throughout v2: https://www.redhat.com/archives/libvir-list/2011-August/msg00620.html Also available here: git fetch git://repo.or.cz/libvirt/ericb.git snapshot or browse online at: http://repo.or.cz/w/libvirt/ericb.git/shortlog/refs/heads/snapshot I've tested that this can create external disk snapshots with SELinux running using the qemu snapshot_blkdev monitor command, then deleting the metadata for those snapshots. Other things from my RFC still remain to be coded: https://www.redhat.com/archives/libvir-list/2011-August/msg00361.html support for offline external disk snapshots support for more flags (such as starting an offline snapshot on revert) support for revert and delete of disk snapshots new apis for easier manipulation of snapshot hierarchies Eric Blake (43): snapshot: better event when reverting qemu to paused snapshot snapshot: improve reverting to qemu paused snapshots snapshot: properly revert qemu to offline snapshots snapshot: don't leak resources on qemu snapshot failure snapshot: only pass snapshot to qemu command line when reverting snapshot: track current snapshot across restarts snapshot: allow deletion of just snapshot metadata snapshot: avoid crash when deleting qemu snapshots snapshot: simplify acting on just children snapshot: let qemu discard only snapshot metadata snapshot: identify which snapshots have metadata snapshot: identify qemu snapshot roots snapshot: prevent stranding snapshot data on domain destruction snapshot: refactor some qemu code snapshot: cache qemu-img location snapshot: support new undefine flags in qemu snapshot: teach virsh about new undefine flags snapshot: prevent migration from stranding snapshot data snapshot: refactor domain xml output snapshot: allow full domain xml in snapshot snapshot: correctly escape generated xml snapshot: update rng to support full domain in xml snapshot: store qemu domain details in xml snapshot: additions to domain xml for disks snapshot: reject transient disks where code is not ready snapshot: reflect recent options in virsh snapshot: introduce new deletion flag snapshot: expose new delete flag in virsh snapshot: allow halting after snapshot snapshot: refactor virsh snapshot creation snapshot: expose halt-after-creation in virsh snapshot: wire up new qemu monitor command snapshot: support extra state in snapshots snapshot: add <disks> to snapshot xml snapshot: also support disks by path snapshot: add virsh domblklist command snapshot: add flag for requesting disk snapshot snapshot: reject unimplemented disk snapshot features snapshot: make it possible to audit external snapshot snapshot: wire up disk-only flag to snapshot-create snapshot: wire up live qemu disk snapshots snapshot: refactor qemu file opening snapshot: use SELinux and lock manager with external snapshots docs/formatdomain.html.in | 40 +- docs/formatsnapshot.html.in | 253 ++- docs/schemas/Makefile.am | 1 + docs/schemas/domain.rng | 2555 +------------------- docs/schemas/{domain.rng => domaincommon.rng} | 32 +- docs/schemas/domainsnapshot.rng | 89 +- include/libvirt/libvirt.h.in | 62 +- src/conf/domain_audit.c | 12 +- src/conf/domain_audit.h | 4 +- src/conf/domain_conf.c | 861 ++++++-- src/conf/domain_conf.h | 75 +- src/esx/esx_driver.c | 41 +- src/libvirt.c | 132 +- src/libvirt_private.syms | 8 + src/libxl/libxl_conf.c | 5 + src/libxl/libxl_driver.c | 11 +- src/qemu/qemu_command.c | 12 +- src/qemu/qemu_conf.h | 1 + src/qemu/qemu_driver.c | 1611 +++++++++---- src/qemu/qemu_hotplug.c | 18 +- src/qemu/qemu_migration.c | 2 +- src/qemu/qemu_monitor.c | 24 + src/qemu/qemu_monitor.h | 4 + src/qemu/qemu_monitor_json.c | 33 + src/qemu/qemu_monitor_json.h | 4 + src/qemu/qemu_monitor_text.c | 40 + src/qemu/qemu_monitor_text.h | 4 + src/qemu/qemu_process.c | 21 +- src/qemu/qemu_process.h | 1 + src/uml/uml_driver.c | 56 +- src/vbox/vbox_tmpl.c | 46 +- src/xen/xend_internal.c | 12 +- src/xenxs/xen_sxpr.c | 5 + src/xenxs/xen_xm.c | 5 + tests/domainsnapshotxml2xmlin/disk_snapshot.xml | 16 + tests/domainsnapshotxml2xmlout/disk_snapshot.xml | 77 + tests/domainsnapshotxml2xmlout/full_domain.xml | 35 + .../qemuxml2argv-disk-snapshot.args | 7 + .../qemuxml2argv-disk-snapshot.xml | 39 + .../qemuxml2argv-disk-transient.xml | 27 + tests/qemuxml2argvtest.c | 2 + tools/virsh.c | 755 +++++- tools/virsh.pod | 111 +- 43 files changed, 3616 insertions(+), 3533 deletions(-) copy docs/schemas/{domain.rng => domaincommon.rng} (98%) create mode 100644 tests/domainsnapshotxml2xmlin/disk_snapshot.xml create mode 100644 tests/domainsnapshotxml2xmlout/disk_snapshot.xml create mode 100644 tests/domainsnapshotxml2xmlout/full_domain.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-snapshot.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-snapshot.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-transient.xml -- 1.7.4.4

2 78

[libvirt] [PATCH] virsh: improve send-key documentation
by Eric Blake 01 Sep '11

01 Sep '11

The 'virsh man' description of send-key was incomplete and used the old style (literal 'optional name' instead of '[name]' metasyntax). Meanwhile, none of the other virsh help texts include examples, so I moved it out of virsh help and into the man page. * tools/virsh.pod (send-key): Give better details. * tools/virsh.c (info_send_key): Drop example from here. --- Red Hat QE found this: https://bugzilla.redhat.com/show_bug.cgi?id=699847 tools/virsh.c | 13 ++++--------- tools/virsh.pod | 20 +++++++++++++++++--- 2 files changed, 21 insertions(+), 12 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 49034ae..8500a03 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -3718,21 +3718,16 @@ cmdInjectNMI(vshControl *ctl, const vshCmd *cmd) */ static const vshCmdInfo info_send_key[] = { {"help", N_("Send keycodes to the guest")}, - {"desc", N_("Send keycodes to the guest, the keycodes must be integers\n" - " Examples:\n\n" - " virsh # send-key <domain> 37 18 21\n" - " virsh # send-key <domain> KEY_RIGHTCTRL KEY_C\n" - " virsh # send-key <domain> --codeset xt 37 18 21\n" - " virsh # send-key <domain> --holdtime 1000 0x15 18 0xf\n" - )}, + {"desc", N_("Send keycodes (integers or symbolic names) to the guest")}, {NULL, NULL} }; static const vshCmdOptDef opts_send_key[] = { {"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")}, - {"codeset", VSH_OT_STRING, VSH_OFLAG_REQ_OPT, N_("the codeset of keycodes, default:linux")}, + {"codeset", VSH_OT_STRING, VSH_OFLAG_REQ_OPT, + N_("the codeset of keycodes, default:linux")}, {"holdtime", VSH_OT_INT, VSH_OFLAG_REQ_OPT, - N_("the time (in millsecond) how long the keys will be held")}, + N_("the time (in millseconds) how long the keys will be held")}, {"keycode", VSH_OT_ARGV, VSH_OFLAG_REQ, N_("the key code")}, {NULL, 0, 0, NULL} }; diff --git a/tools/virsh.pod b/tools/virsh.pod index 2cd0f73..5c417f9 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -310,9 +310,23 @@ running B<virsh suspend>. When in a paused state the domain will still consume allocated resources like memory, but will not be eligible for scheduling by the hypervisor. -=item B<send-key> I<domain-id> optional I<--codeset> B<codeset> optional I<--holdtime> B<holdtime> B<keycode>... - -Send keys to the guest +=item B<send-key> I<domain-id> [I<--codeset> B<codeset>] +[I<--holdtime> B<holdtime>] I<keycode>... + +Parse the I<keycode> sequence as keystrokes to send to I<domain-id>. +Each I<keycode> can either be a numeric value or a symbolic name from +the corresponding codeset. The default code set is B<linux>, but +use of I<--codeset> can specify B<xt>, B<atset1>, B<atset2>, B<atset3>, +B<os_x>, B<xt_kbd>, B<usb>, B<win32>, or B<rfb> instead. If I<--holdtime> +is given, each keystroke will be held for that many milliseconds. + +B<Examples> + # send three strokes 'k', 'e', 'y', using xt codeset + virsh send-key dom --codeset xt 37 18 21 + # send one stroke 'right-ctrl+C' + virsh send-key dom KEY_RIGHTCTRL KEY_C + # send a tab, held for 1 second + virsh send-key --holdtime 1000 0xf =item B<shutdown> -- 1.7.4.4

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[libvirt] [PATCH 0/6] Support online block resizing
by Osier Yang 01 Sep '11

01 Sep '11

Upstream QEMU introduced online block resizing to resize the block device when domain is running since commit 6d4a2b3a4795. It simply reuses existing "bdrv_truncate" method which is used by "qemu-img" to resize the images. This means it supports to resize all the format that "qemu-img resize" supports. E.g. qcow2, raw, qed, qcow, etc. (NB, it doesn't support to shrink size of qcow2 image, and QEMU reports "An undefined error has ocurred" in this case). For block device of virtio bus, the guest can update the device size automatically, needs kernel support, since kernel-2.6.32-117: http://patchwork.usersys.redhat.com/patch/33040/ For block device of SCSI bus, one needs to execute command like below in the guest (linux) to update the size: % echo > /sys/class/scsi_device/0:0:0:0/device/rescan For block device of IDE bus, seems there is no way to let guest update the size after resizing. The new API is defined as: int virDomainBlockResize (virDomainPtr dom, const char *device, unsigned long long size, unsigned int flags) * @device is the name of block device, E.g. vda, vdb. * Units for @size is KB. [PATCH 1/6] block_resize: Define the new API [PATCH 2/6] block_resize: Implemente the public API [PATCH 3/6] block_resize: Wire up the remote protocol [PATCH 4/6] block_resize: Implemente the qemu monitor functions [PATCH 5/6] block_resize: Implemente the internal API for qemu [PATCH 6/6] block_resize: Expose the new API in virsh Regards, Osier

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