Trivial patch, move version command to host commands group.
It has no any related with any domain.
It may connect to the daemon, so the flag is 0 but not VSH_CMD_FLAG_NOCONNECT.
Virsh's echo command looks not having any relations with domains and its
description should go into the generic commands section instead of the
domain commands section (current).
Virsh's send-key command manipulates domains and its description should
go into the domain commands section instead of generic commands section
(current).
called vshWatchJob. This can be later used in other
job oriented commands like dump, save, managedsave
to report progress and allow user to cancel via ^C.
Detected by valgrind. Leaks introduced in commit 4d5383f.
* tools/virsh.c: fix memory leaks on cmdDomXMLFromNative and cmdDomXMLToNative.
* how to reproduce?
% virsh dumpxml ${guest} > foo.xml
% valgrind -v --leak-check=full virsh domxml-from-native qemu-argv foo.xml
% valgrind -v --leak-check=full virsh domxml-to-native qemu-argv foo.xml
* actual valgrind results:
==9724== 8,193 bytes in 1 blocks are definitely lost in loss record 31 of 33
==9724== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==9724== by 0x4A06167: realloc (vg_replace_malloc.c:525)
==9724== by 0x4C7510B: virReallocN (memory.c:161)
==9724== by 0x4C84679: virFileReadLimFD (util.c:394)
==9724== by 0x4C84815: virFileReadAll (util.c:455)
==9724== by 0x41A89F: cmdDomXMLFromNative (virsh.c:5532)
==9724== by 0x414872: vshCommandRun (virsh.c:16464)
==9724== by 0x425623: main (virsh.c:17971)
==9724==
==9724== LEAK SUMMARY:
==9724== definitely lost: 8,193 bytes in 1 blocks
==9724== indirectly lost: 0 bytes in 0 blocks
==9724== possibly lost: 0 bytes in 0 blocks
==9724== still reachable: 127,128 bytes in 1,347 blocks
==7409== 8,193 bytes in 1 blocks are definitely lost in loss record 31 of 33
==7409== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==7409== by 0x4A06167: realloc (vg_replace_malloc.c:525)
==7409== by 0x4C7510B: virReallocN (memory.c:161)
==7409== by 0x4C84679: virFileReadLimFD (util.c:394)
==7409== by 0x4C84815: virFileReadAll (util.c:455)
==7409== by 0x41A7AF: cmdDomXMLToNative (virsh.c:5578)
==7409== by 0x414892: vshCommandRun (virsh.c:16463)
==7409== by 0x425633: main (virsh.c:17970)
==7409==
==7409== LEAK SUMMARY:
==7409== definitely lost: 8,193 bytes in 1 blocks
==7409== indirectly lost: 0 bytes in 0 blocks
==7409== possibly lost: 0 bytes in 0 blocks
==7409== still reachable: 127,128 bytes in 1,347 blocks
Signed-off-by: Alex Jia <ajia@redhat.com>
Using 'virReallocN' to allocate memory on virConsoleEventOnStdin,
virConsoleEventOnStdout and virConsoleEventOnStream, however, the
cleanup function virConsoleShutdown hasn't released these memory.
* tools/console.c: fix memory leaks on virConsoleShutdown.
https://bugzilla.redhat.com/show_bug.cgi?id=767488
Signed-off-by: Alex Jia <ajia@redhat.com>
No need to repeat code for formatting typed parameters.
* tools/virsh.c (vshGetTypedParamValue): Support strings, and exit
on OOM.
(cmdSchedinfo, cmdBlkiotune, cmdMemtune, cmdBlkdeviotune): Use
it for less code.
Add an option for virsh undefine command, to remove associated storage
volumes while undefining a domain. This patch allows the user to remove
associated (libvirt managed ) storage volumes while undefining a domain.
The new option --storage for the undefine command takes a string
argument that consists of comma separated list of target or source path
of volumes to be undefined. Volumes are removed after the domain has
been successfully undefined,
If a volume is not part of a storage pool, the user is warned to remove
the volume in question himself.
Option --wipe-storage may be specified along with this, that ensures
the image is wiped before removing.
Option --remove-all-storage enables the user to remove all storage. The
name is chosen long as the users should be aware what they're about to
do.
I was wondering why 'virsh edit' didn't support the same
'--inactive' option as 'virsh dumpxml'; reading the source
code showed that --inactive was already implied, and that
the only way to alter a running guest rather than affecting
next boot is by hot-plugging individual devices, or by
something complex like saving the guest and modifying the
save image.
* tools/virsh.pod (define, edit): Mention behavior when guest is
already running.
If parsing of arguments failed, virsh did silently exit returning and
error state, but not specifying the possible problem.
* tools/virsh: cmdNodesuspend: - error handling added
Commit 4d9e51f6 fixed a 'make uninstall' failure, but failed
to follow other conventions already present in src/Makefile.am.
In particular, we prefer MKDIR_P over mkdir -p, and should
have a matching rmdir during uninstall for every directory
created during install (the idea being that uninstall in a
DESTDIR should be clean, while installation in the final
system should not fail with non-empty directories left behind).
* tools/Makefile.am (install-sysconfig, install-initscript)
(install-systemd): Use MKDIR_P.
(uninstall-sysconfig, uninstall-initscript, uninstall-systemd):
Also remove directories.
* daemon/Makefile.am (install-data-local, install-data-polkit)
(install-logrotate, install-sysconfig, install-sysctl)
(install-init-redhat, install-init-upstart, install-init-systemd)
(install-data-sasl): Use MKDIR_P.
(uninstall-data-polkit, uninstall-sysconfig, uninstall-sysctl)
(uninstall-init-redhat, uninstall-init-upstart)
(uninstall-init-systemd): Also remove directory.
(uninstall-logrotate): New rule.
(uninstall-local): Add uninstall-logrotate.
Detected by valgrind. Leak introduced in commit 88a993b:
* tools/virsh.c: fix memory leak on cmdDomblklist.
* how to reproduce?
% valgrind -v --leak-check=full virsh domblklist <domain name>
* actual valgrind result:
==6573== 1,836 bytes in 1 blocks are definitely lost in loss record 110 of 124
==6573== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==6573== by 0x330D71497D: xdr_string (in /lib64/libc-2.12.so)
==6573== by 0x4D26CED: xdr_remote_nonnull_string (remote_protocol.c:30)
==6573== by 0x4D28138: xdr_remote_domain_get_xml_desc_ret (remote_protocol.c:1418)
==6573== by 0x4D3C0C2: virNetMessageDecodePayload (virnetmessage.c:382)
==6573== by 0x4D3279F: virNetClientProgramCall (virnetclientprogram.c:382)
==6573== by 0x4D0D50B: callWithFD (remote_driver.c:4339)
==6573== by 0x4D0D5AB: call (remote_driver.c:4360)
==6573== by 0x4D16EAF: remoteDomainGetXMLDesc (remote_client_bodies.h:861)
==6573== by 0x4CF9F4F: virDomainGetXMLDesc (libvirt.c:4098)
==6573== by 0x4154D9: cmdDomblklist (virsh.c:1722)
==6573== by 0x4149E2: vshCommandRun (virsh.c:16365)
==6573==
==6573== 46,009 (352 direct, 45,657 indirect) bytes in 1 blocks are definitely lost in loss record 123 of 124
==6573== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==6573== by 0x3318286DC6: xmlXPathNewContext (in /usr/lib64/libxml2.so.2.7.6)
==6573== by 0x4C79AE2: virXMLParseHelper (xml.c:779)
==6573== by 0x415512: cmdDomblklist (virsh.c:1726)
==6573== by 0x4149E2: vshCommandRun (virsh.c:16365)
==6573== by 0x427743: main (virsh.c:17867)
==6573==
==6573== LEAK SUMMARY:
==6573== definitely lost: 2,188 bytes in 2 blocks
==6573== indirectly lost: 45,657 bytes in 332 blocks
==6573== possibly lost: 0 bytes in 0 blocks
==6573== still reachable: 128,034 bytes in 1,364 blocks
==6573== suppressed: 0 bytes in 0 blocks
Signed-off-by: Alex Jia <ajia@redhat.com>
Reported by Alex Jia <ajia@redhat.com>. Function cmdDomIfGetLink did not
set a success return value on success path.
Signed-off-by: Alex Jia<ajia@redhat.com>
Detected by valgrind. Leak introduced in commit dc675f3:
* tools/virsh.c: fix memory leak on cmdDomIfGetLink.
* how to reproduce?
% valgrind -v --leak-check=full virsh domif-getlink <domain name> 0
* actual valgrind result:
==13102== 18 bytes in 1 blocks are definitely lost in loss record 9 of 47
==13102== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==13102== by 0x322A6A67DD: xmlStrndup (in /usr/lib64/libxml2.so.2.7.6)
==13102== by 0x414892: cmdDomIfGetLink (virsh.c:1538)
==13102== by 0x4136A2: vshCommandRun (virsh.c:16363)
==13102== by 0x4253FB: main (virsh.c:17865)
==13102==
==13102== LEAK SUMMARY:
==13102== definitely lost: 18 bytes in 1 blocks
==13102== indirectly lost: 0 bytes in 0 blocks
==13102== possibly lost: 0 bytes in 0 blocks
==13102== still reachable: 127,888 bytes in 1,361 blocks
==13102== suppressed: 0 bytes in 0 blocks
Signed-off-by: Alex Jia <ajia@redhat.com>
Detected by valgrind. Leak introduced in commit e9bd9a0:
* tools/virsh.c: fix memory leak on cmdBlkdeviotune.
* how to reproduce?
% valgrind -v --leak-check=full virsh blkdeviotune <domain name> <block device>
* actual valgrind result:
==12759== 576 bytes in 1 blocks are definitely lost in loss record 18 of 29
==12759== at 0x4A04A28: calloc (vg_replace_malloc.c:467)
==12759== by 0x42134E: _vshCalloc.clone.2 (virsh.c:422)
==12759== by 0x4217CB: cmdBlkdeviotune (virsh.c:6364)
==12759== by 0x4136A2: vshCommandRun (virsh.c:16363)
==12759== by 0x4253FB: main (virsh.c:17865)
==12759==
==12759== LEAK SUMMARY:
==12759== definitely lost: 576 bytes in 1 blocks
==12759== indirectly lost: 0 bytes in 0 blocks
==12759== possibly lost: 0 bytes in 0 blocks
==12759== still reachable: 126,964 bytes in 1,342 blocks
==12759== suppressed: 0 bytes in 0 blocks
Signed-off-by: Alex Jia <ajia@redhat.com>
The installation rules for the libvirt-guests.service were
totally broken
- Installing in the wrong location
- The location was not overridable
- The install-systemd rule was not invoked anywhere
- The install-systemd rule was not invoking install-initscript
which it depends on
- The installed service file lacked a .service extension
* tools/Makefile.am: Fix install of libvirt-guests.service
On RHEL 5, with libxml2-2.6.26, the build failed with:
virsh.c: In function 'vshNodeIsSuperset':
virsh.c:11951: warning: implicit declaration of function 'xmlChildElementCount'
(or if warnings aren't errors, a link failure later on).
* src/util/xml.h (virXMLChildElementCount): New prototype.
* src/util/xml.c (virXMLChildElementCount): New function.
* src/libvirt_private.syms (xml.h): Export it.
* tools/virsh.c (vshNodeIsSuperset): Use it.
https://bugzilla.redhat.com/show_bug.cgi?id=648855 mentioned a
misuse of 'an' where 'a' is proper; that has since been fixed,
but a search found other problems (some were a spelling error for
'and', while most were fixed by 'a').
* daemon/stream.c: Fix grammar.
* src/conf/domain_conf.c: Likewise.
* src/conf/domain_event.c: Likewise.
* src/esx/esx_driver.c: Likewise.
* src/esx/esx_vi.c: Likewise.
* src/rpc/virnetclient.c: Likewise.
* src/rpc/virnetserverprogram.c: Likewise.
* src/storage/storage_backend_fs.c: Likewise.
* src/util/conf.c: Likewise.
* src/util/dnsmasq.c: Likewise.
* src/util/iptables.c: Likewise.
* src/xen/xen_hypervisor.c: Likewise.
* src/xen/xend_internal.c: Likewise.
* src/xen/xs_internal.c: Likewise.
* tools/virsh.c: Likewise.
Currently virsh supports only ^] as escape character for console.
However, some users might want to use something else. This patch
creates such ability by specifying '-e' switch on virsh command
line.
Not only was ctl->quit accessed without a mutex but unfortunately,
virEventAddTimeout only interrupts the poll when event loop is running
so the hack needs to add a timeout that will make next poll return
immediately without blocking.
Prior to this patch, for a running dom, the commands:
$ virsh blkiotune dom --device-weights /dev/sda,502,/dev/sdb,498
$ virsh blkiotune dom --device-weights /dev/sda,503
$ virsh blkiotune dom
weight : 500
device_weight : /dev/sda,503
claim that /dev/sdb no longer has a non-default weight, but
directly querying cgroups says otherwise:
$ cat /cgroup/blkio/libvirt/qemu/dom/blkio.weight_device
8:0 503
8:16 498
After this patch, an explicit 0 is required to remove a device path
from the XML, and omitting a device path that was previously
specified leaves that device path untouched in the XML, to match
cgroups behavior.
* src/qemu/qemu_driver.c (parseBlkioWeightDeviceStr): Rename...
(qemuDomainParseDeviceWeightStr): ...and use correct type.
(qemuDomainSetBlkioParameters): After parsing string, modify
rather than replacing existing table.
* tools/virsh.pod (blkiotune): Tweak wording.
Support virsh command blkdeviotune. Can set or query a block disk
I/O throttle setting.
Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
This adds per-device weights to <blkiotune>. Note that the
cgroups implementation only supports weights per block device,
and not per-file within the device; hence this option must be
global to the domain definition rather than tied to individual
<devices>/<disk> entries:
<domain ...>
<blkiotune>
<device>
<path>/path/to/block</path>
<weight>1000</weight>
</device>
</blkiotune>
..
This patch also adds a parameter --device-weights to virsh command
blkiotune for setting/getting blkiotune.weight_device for any
hypervisor that supports it. All <device> entries under
<blkiotune> are concatenated into a single string attribute under
virDomain{Get,Set}BlkioParameters, named "device_weight".
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
If both nodes do not have any children, we pass zero to
virBitmapAlloc which returns NULL. In turn we report OOM error
and return false (meaning nodes are different). This is not true.
Up to now users have to give a full XML description on input when
device-detaching. If they omitted something it lead to unclear
error messages (like generated MAC wasn't found, etc.).
With this patch users can specify only those information which
specify one device sufficiently precise. Remaining information is
completed from domain.
This patch adds support for a systemd init service for libvirtd
and libvirt-guests. The libvirtd.service is *not* written to use
socket activation, since we want libvirtd to start on boot so it
can do guest auto-start.
The libvirt-guests.service is pretty lame, just exec'ing the
original init script for now. Ideally we would factor out the
functionality, into some shared tool.
Instead of
./configure --with-init-script=redhat
You can now do
./configure --with-init-script=systemd
Or better still:
./configure --with-init-script=systemd+redhat
We can also now support install of the upstart init script
* configure.ac: Add systemd, and systemd+redhat options to
--with-init-script option
* daemon/Makefile.am: Install systemd services
* daemon/libvirtd.sysconf: Add note about unused env variable
with systemd
* daemon/libvirtd.service.in: libvirtd systemd service unit
* libvirt.spec.in: Add scripts to installing systemd services
and migrating from legacy init scripts
* tools/Makefile.am: Install systemd services
* tools/libvirt-guests.init.sh: Rename to tools/libvirt-guests.init.in
* tools/libvirt-guests.service.in: systemd service unit
One of the top questions by libvirt users is how to create a host
bridge device so that guests can be directly on the physical
network. There are several example documents that explain how to do
this manually, but following them often results in confusion and
failure. virt-manager does a good job of creating a bridge based on an
existing network device, but not everyone wants to use virt-manager.
This patch adds a new command, iface-bridge that makes it just about
as simple as possible to create a new bridge device based on an
existing ethernet/vlan/bond device (including associating IP
configuration with the bridge rather than the now-attached device),
and start that new bridge up ready for action, eg:
virsh iface-bridge eth0 br0
For symmetry's sake, it also adds a command to remove a device from a
bridge, restoring the IP config to the now-unattached device:
virsh iface-unbridge br0
(I had a short debate about whether to do "iface-unbridge eth0"
instead, but that would involve searching through all bridge devices
for the one that contained eth0, which seems like a bit too much
trouble).
NOTE: These two commands require that the netcf library be available
on the host. Hopefully this will provide some extra incentive for
people using suse, debian, ubuntu, and other similar systems to polish
up (and push downstream) the ports to those distros recently pushed to
the upstream netcf repo by Dan Berrange. Anyone interested in helping
with that effort in any way should join the netcf-devel mailing list
(subscription info at
https://fedorahosted.org/mailman/listinfo/netcf-devel)
During creation of the bridge, it's possible to specify whether or not
the STP protocol should be started up on the bridge and, if so, how
many seconds the bridge should squelch traffic from newly added
devices while learning new topology (defaults are stp='on' and
delay='0', which seems to usually work best for bridges used in the
context of libvirt guests).
There is also an option to not immediately start the bridge (and a
similar option to not immediately start the un-attached device after
destroying the bridge. Default is to start the new device, because in
the case of iface-unbridge not starting is strongly discouraged as it
will leave the system with no network connectivity on that interface
(because it's necessary to destroy/undefine the bridge device before
the unattached device can be defined), and it seemed better to make
the option for iface-bridge behave consistently.
NOTE TO THOSE TRYING THESE COMMANDS FOR THE FIRST TIME: to guard
against any "unexpected" change to configuration, it is advisable to
issue an "virsh iface-begin" command before starting any interface
config changes, and "virsh iface-commit" only after you've verified
that everything is working as you expect. If something goes wrong,
you can always run "virsh iface-rollback" or reboot the system (which
should automatically do iface-rollback).
Aside from adding the code for these two functions, and the two
entries into the command table, the only other change to virsh.c was
to add the option name to vshCommandOptInterfaceBy(), because the
iface-unbridge command names its interface option as "bridge".
virsh.pod has also been updated with short descriptions of these two
new commands.
The src/util/network.c file is a dumping ground for many different
APIs. Split it up into 5 pieces, along functional lines
- src/util/virnetdevbandwidth.c: virNetDevBandwidth type & helper APIs
- src/util/virnetdevvportprofile.c: virNetDevVPortProfile type & helper APIs
- src/util/virsocketaddr.c: virSocketAddr and APIs
- src/conf/netdev_bandwidth_conf.c: XML parsing / formatting
for virNetDevBandwidth
- src/conf/netdev_vport_profile_conf.c: XML parsing / formatting
for virNetDevVPortProfile
* src/util/network.c, src/util/network.h: Split into 5 pieces
* src/conf/netdev_bandwidth_conf.c, src/conf/netdev_bandwidth_conf.h,
src/conf/netdev_vport_profile_conf.c, src/conf/netdev_vport_profile_conf.h,
src/util/virnetdevbandwidth.c, src/util/virnetdevbandwidth.h,
src/util/virnetdevvportprofile.c, src/util/virnetdevvportprofile.h,
src/util/virsocketaddr.c, src/util/virsocketaddr.h: New pieces
* daemon/libvirtd.h, daemon/remote.c, src/conf/domain_conf.c,
src/conf/domain_conf.h, src/conf/network_conf.c,
src/conf/network_conf.h, src/conf/nwfilter_conf.h,
src/esx/esx_util.h, src/network/bridge_driver.c,
src/qemu/qemu_conf.c, src/rpc/virnetsocket.c,
src/rpc/virnetsocket.h, src/util/dnsmasq.h, src/util/interface.h,
src/util/iptables.h, src/util/macvtap.c, src/util/macvtap.h,
src/util/virnetdev.h, src/util/virnetdevtap.c,
tools/virsh.c: Update include files
As the description of removing CDROM media from
http://wiki.libvirt.org/page/QEMUSwitchToLibvirt#eject_DEV
Add flag 'VSH_OFLAG_EMPTY_OK' to the option 'source' of attach-disk
Then avoid outputting <source> in the XML if 'source' was empty,
rather than trusting libvirt domain_conf.c to understand an empty
string.
Signed-off-by: Xu He Jie <xuhj@linux.vnet.ibm.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
If vol-create-from is failed due to 'input volume not found',
virsh outputs like this:
$ sudo virsh vol-create-from testpool test-vol.xml test.img
error: failed to get vol 'test.img', specifying --pool might help
error: Storage volume not found: no storage vol with matching path
However, '--pool' is incorrect because it is already specified as
second argument ('testpool' in this case). It should be "--inputpool".
The patch fixes this by using pooloptname, which will be "inputpool"
in this case and "pool" in other cases, as error message.
We have a new vol type "dir" in addition to "file" and "block", but
virsh doesn't know it. Fix it.
Additionally, the patch lets virsh output "unknown" if not matched
any of them.
Clarify some of the effects of managed passthrough <hostdev> devices;
with recent changes (commit d093547), a nodedev-reattach is only needed
to pair up to an explicit nodedev-dettach (but beware that older
virt-manager has a bug where it uses explicit nodedev-dettach under the
hood when using the gui to hotplug a hostdev device).
* docs/formatdomain.html.in: Mention reattach.
* tools/virsh.pod (nodedev): Mention managed mode.
Rather than having to do:
$ virsh snapshot-revert dom $(virsh snapshot-current dom --name)
I thought it would be nice to do:
$ virsh snapshot-revert dom --current
I didn't add 'virsh snapshot-dumpxml --current' since we already have
'virsh snapshot-current' for the same task. snapshot-list accepted
a name but did not require it, and that remains the case, with
--current serving in place of that name. For all other commands,
name used to be required, and can now be replaced by --current;
I intentionally made it so that omitting both --current and a name
is an error (having the absence of a name imply --current seems
just a bit too magic, so --current must be explicit). I also had
to keep snapshot-edit backwards-compatible, as the only command
that already had a --current argument alongside a name, which still
works to both edit a named snapshot and make it current.
* tools/virsh.c (vshLookupSnapshot): New helper function.
(cmdSnapshotEdit, cmdSnapshotList, cmdSnapshotParent)
(cmdSnapshotDelete, cmdDomainSnapshotRevert): Use it, adding an
option where needed.
* tools/virsh.pod (snapshot-delete, snapshot-edit)
(snapshot-list, snapshot-parent, snapshot-revert): Document
use of --current.
(snapshot-dumpxml): Mention alternative.
I got these distcheck failures with sanlock enabled:
ERROR: files left in build directory after distclean:
./tools/virt-sanlock-cleanup
./src/locking/qemu-sanlock.conf
* src/Makefile.am (DISTCLEANFILES) [HAVE_SANLOCK]: Clean built
file.
* tools/Makefile.am (DISTCLEANFILES): Likewise.
Given a list of snapshots and their parents, finding all descendants
requires a hairy traversal. This code is O(n^3); it could maybe be
made to scale O(n^2) with the use of a hash table, but that costs more
memory. Hopefully there aren't too many people with a hierarchy
so large as to approach REMOTE_DOMAIN_SNAPSHOT_LIST_NAMES_MAX (1024).
* tools/virsh.c (cmdSnapshotList): Add final fallback.
Iterating over one level of children requires parsing all snapshots
and their parents; a bit of code shuffling makes it pretty easy
to do this as well.
* tools/virsh.c (cmdSnapshotList): Add another fallback.
Emulating --from requires grabbing the entire list of snapshots
and their parents, and recursively iterating over the list from
the point of interest - but we already do that for --tree. This
turns on emulation for that situation.
* tools/virsh.c (__vshControl): Rename member.
(vshReconnect, cmdConnect, vshGetSnapshotParent): Update clients.
(cmdSnapshotList): Add fallback.
Sometimes, we only care about one branch of the snapshot hierarchy.
Make it easier to list a single branch, by using the new APIs.
Technically, I could emulate these new virsh options on old servers
by doing a complete dump, then scraping xml to filter out just the
snapshots that I care about, but I didn't want to do that in this patch.
* tools/virsh.c (cmdSnapshotList): Add --from, --descendants.
* tools/virsh.pod (snapshot-list): Document them.
I was a bit surprised that 'virsh snapshot-edit dom name' silently
allowed me to clone things, while still telling me the old name,
especially since other commands like 'virsh edit dom' reject rename
attempts (*). This fixes things to be more explicit (**).
(*) Technically, 'virsh edit dom' relies on virDomainDefineXML
behavior, which rejects attempts to mix a new name with existing
uuid or new uuid with existing name, but you can create a new
domain by changing both uuid and name. On the other hand, while
snapshot-edit --clone is a true clone, creating a new domain
would also have to decide whether to clone snapshot metadata,
managed save, and any other secondary data related to the domain.
Domain renames are not trivial either.
(**) Renaming or creating a clone is still a risky proposition -
for offline snapshots and system checkpoints, if the new name
does not match an actual name recorded in the qcow2 internal
snapshots, then you cannot revert to the new checkpoint. But it
is assumed that anyone using the new virsh flags knows what they
are doing, and can deal with the fallout caused by a rename/clone;
that is, we can't completely prevent a user from shooting
themselves in the foot, so much as we are making the default
action less risky.
* tools/virsh.c (cmdSnapshotEdit): Add --rename, --clone.
* tools/virsh.pod (snapshot-edit): Document them.
virsh undefine command can now undefine an active guest, but the help information is still the old.
This patch modifies it and make it coincident to the manpage of virsh.
Signed-off-by: tangchen <tangchen@cn.fujitsu.com>
It was impossible for 'virsh snapshot-current dom name' to set name
as the current snapshot, if name is a disk-only snapshot.
Using strstr rather than full-blown xml parsing is safe, since the
xml is assumed to be well-formed coming from libvirtd rather than
arbitrary text coming from the user.
* tools/virsh.c (cmdSnapshotCurrent, cmdSnapshotEdit): Pass
disk_only flag when redefining a disk snapshot.
Although reverting to a snapshot is a form of data loss, this is
normally expected. However, there are two cases where additional
surprises (failure to run the reverted state, or a break in
connectivity to the domain) can come into play. Requiring extra
acknowledgment in these cases will make it less likely that
someone can get into an unrecoverable state due to a default revert.
Also create a new error code, so users can distinguish when forcing
would make a difference, rather than having to blindly request force.
* include/libvirt/libvirt.h.in (VIR_DOMAIN_SNAPSHOT_REVERT_FORCE):
New flag.
* src/libvirt.c (virDomainRevertToSnapshot): Document it.
* include/libvirt/virterror.h (VIR_ERR_SNAPSHOT_REVERT_RISKY): New
error value.
* src/util/virterror.c (virErrorMsg): Implement it.
* tools/virsh.c (cmdDomainSnapshotRevert): Add --force to virsh.
* tools/virsh.pod (snapshot-revert): Document it.
Previously, virsh 'snapshot-parent' and 'snapshot-current' were
completely silent in the case where the code conclusively proved
there was no parent or current snapshot, but differed in exit
status; this silence caused some confusion on whether the commands
worked. Furthermore, commit d1be48f introduced a regression where
snapshot-parent would leak output about an unknown function, but
only on the first attempt, when talking to an older server that
lacks virDomainSnapshotGetParent. This changes things to consistenly
report an error message and exit with status 1 when no snapshot
exists, and to avoid leaking unknown function warnings when using
fallbacks.
* tools/virsh.c (vshGetSnapshotParent): Alter signature, to
distinguish between real error and missing parent. Don't pollute
last_error on success.
(cmdSnapshotParent): Adjust caller. Always output message on
failure.
(cmdSnapshotList): Adjust caller.
(cmdSnapshotCurrent): Always output message on failure.
error:could not take a screenshot of xp
==6216== Syscall param unlink(pathname) points to unaddressable byte(s)
==6216== at 0x373A0D4937: unlink (syscall-template.S:82)
==6216== by 0x40FD73: cmdScreenshot (virsh.c:3070)
==6216== by 0x42BA0D: vshCommandRun (virsh.c:14920)
==6216== by 0x42EC97: main (virsh.c:16379)
==6216== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==6216==
error:Requested operation is not valid: domain is not running
This patch is based on a improvement suggested by Kazuhiro Kikuchi
of Fujitsu, it gives a description of the target parameter for that
command
* tools/virsh.pod: add description for target parameter of
attach-interface
The man page suggest that the cpu_shares parameter of schedinfo
allows values 0-262144, but the kernel remaps values 0 and 1 to
the minimum 2, just document that behaviour:
[root@test ~]# cat /cgroup/cpu/libvirt/qemu/cpu.shares
1024
[root@test ~]# echo 0 > /cgroup/cpu/libvirt/qemu/cpu.shares
[root@test ~]# cat /cgroup/cpu/libvirt/qemu/cpu.shares
2
[root@test ~]# echo 1 > /cgroup/cpu/libvirt/qemu/cpu.shares
[root@test ~]# cat /cgroup/cpu/libvirt/qemu/cpu.shares
2
[root@test ~]#
* tools/virsh.pod: update description of the cpu_shares parameter
to indicate the values 0 and 1 are automatically changed by the
kernel to minimal value 2
Reuse the tree listing of nodedev-list, coupled with the new helper
function to efficiently grab snapshot parent names, to produce
tree output for a snapshot hierarchy. For example:
$ virsh snapshot-list dom --tree
root1
|
+- sibling1
+- sibling2
| |
| +- grandchild
|
+- sibling3
root2
|
+- child
* tools/virsh.c (cmdSnapshotList): Add --tree.
* tools/virsh.pod (snapshot-list): Document it.
Make parent computation reusable, using virDomainSnapshotGetParent
when possible.
* tools/virsh.c (vshGetSnapshotParent): New helper.
(cmdSnapshotParent): Use it.
This section of the man page was completely missing; I stumbled on
it when I had no clue that I had to use nodedev-reattach after
I was done playing with <hostdev> device passthrough to one of my
guests.
* tools/virsh.pod (NODEDEV COMMANDS): New section.
(attach-device, detach-device): Add cross-references.
This patch cleans the cpu baseline function using new libvirt helper
functions and fixes XPath expression that selects <cpu> elements from
the source file, that can contain concatenated <capabilities> XMLs,
domain XMLs and bare <cpu> elements. The fixed XPath expression ensures
not to select NUMA <cpu id=... elements.
This patch also removes vshRealloc function, that remained unused after
cleaning up cpu-baseline.
https://bugzilla.redhat.com/show_bug.cgi?id=731645
pod2man from perl-5.8.8 (RHEL 5) errors out on ill-formed POD:
*** ERROR: unterminated I<...> at line 1114 in file virsh.pod
*** ERROR: unterminated I<...> at line 1851 in file virsh.pod
Newer pod2man appears to be more tolerant (which is a shame,
because it meant that this error is harder to detect).
* tools/virsh.pod (undefine, snapshot-current): Add missing >.
Some virsh commands start a (long-running) job that can be monitored
using domjobinfo and aborted with domjobabort. Let's be explicit about
this in virsh man page.
QEMU 0.13 introduced cache=unsafe for -drive, this patch exposes
it in the libvirt layer.
* Introduced a new QEMU capability flag ($prefix_CACHE_UNSAFE),
as even if $prefix_CACHE_V2 is set, we can't know if unsafe
is supported.
* Improved the reliability of qemu cache type detection.
Commit 0a22f54 added --min-guarantee option for the memtune command.
This option is supported only by the ESX hypervisor. This patch adds a
statement about this fact, to prevent user confusion.
This patch also adds explanation how to clear/set to unlimited the
memory tunables. (documments the -1 value).
Prior to commit 85d2810, we had an issue where:
snapshot-create-as dom name --diskspec spec --diskspec spec
failed to parse the second spec, because the first spec had marked
that option as no longer requiring an argument.
In commit 85d2810, I fixed it by making argv options no longer mark
the option as seen. But this in turn breaks mandatory argv options,
which now complain that the argv option is missing.
This patch reverts that part of 85d2810, and instead replaces it with
fixes to no longer clear opts_need_arg of an argv argument.
* tools/virsh.c (vshCmddefGetOption, vshCmddefGetData)
(vshCommandParse): Fix option parsing for required argv option.
(vshCmddefOptParse): Check that argv option is last.
* tests/virsh-optparse: Enhance test.
There are 3 ways to lookup a volume, only virStorageVolLookupByName
needs pool object. So if no --pool is specified, it will tries to
get the volume via virStorageVolLookupByPath/virStorageVolLookupByKey.
But if all 3 ways fails, and no --pool is specified, a friendly
error might help the user get right way quickly.
Translators are likely to botch trailing spacing; by doing the
formatting outside of the translation, we can generally get
better alignment. Also, for consistency, use 'bytes read' to
match 'bytes written'.
* tools/virsh.c (domblkstat_output): Drop trailing space. Tweak
rd_bytes output.
(cmdDomblkstat, DOMBLKSTAT_LEGACY_PRINT): Update formatting.
Virsh man page lists driver types to be used with attach-device
command, but does not specify that those are usable only with the XEN
Hypervisor.
This patch adds statement, that those options specified are applicable
only on the Xen hypervisor and adds option usable with qemu emulator.
This patch also changes type of error returned by QEMU driver if the
user specifies incompatible driver type from VIR_ERR_INTERNAL_ERROR to
VIR_ERR_CONFIG_UNSUPPORTED.
Users of virsh complain that output of the domblkstat command
is not intuitive enough. This patch adds explanation of fields
returned by this command to the help section for domblkstat and
the man page of virsh. Also a switch --human is added for
domblkstat that prints the fields with more descriptive
texts.
This patch also changes sequence of the output fields and their
names back to the order and spelling established by previous
versions of virsh to maintain compatibility with scripts.
Example of ordered and "translated" output:
PRE-patch:
virsh # domblkstat 1 vda
vda wr_bytes 5170176
vda wr_operations 511
vda rd_bytes 82815488
vda rd_operations 3726
POST-patch:
virsh # domblkstat 1 vda
vda rd_req 3726
vda rd_bytes 82815488
vda wr_req 478
vda wr_bytes 4965376
Example of human readable output:
virsh # domblkstat 1 vda --human
Device: vda
number of read operations: 3726
number of read bytes: 82815488
number of write operations: 478
number of bytes written: 4965376
https://bugzilla.redhat.com/show_bug.cgi?id=731656
Qemu sends STOP event as part of the shutdown process. Detect such STOP
event and consider shutdown to be reason of emitting such event. That's
the best we can do until qemu provides us the reason directly in STOP
event. This allows us to report shutdown reason for paused state so that
apps can detect domains that failed to finish the shutdown process
(e.g., because qemu is buggy and doesn't exit on SIGTERM or it is
blocked in flushing disk buffers).
Documentation did not specify, that some permissions are required on
target path for coredump for the user running the hypervisor.
Diff to v1:
- reword statements
With this patch, it is hopefully a bit more obvious that for
snapshot-create-as, a literal '--diskspec' is mandatory if name
or description was omitted, but optional if all earlier options
were provided.
These all denote two diskspecs and a description:
virsh snapshot-create-as dom name desc vda vdb
virsh snapshot-create-as dom name desc --diskspec vda --diskspec vdb
virsh snapshot-create-as dom name desc --diskspec vda vdb
virsh snapshot-create-as dom name desc vda --diskspec vdb
virsh snapshot-create-as dom --diskspec vda --diskspec vdb name desc
This gives two diskspecs but no description:
virsh snapshot-create-as dom name --diskspec vda --diskspec vdb
And this treats 'vda' as the description, with only one diskspec:
virsh snapshot-create-as dom name vda vdb
The help output now shows:
snapshot-create-as <domain> [<name>] [<description>] [--print-xml] [--no-metadata] [--halt] [--disk-only] [[--diskspec] <string>]...
I also checked the help output for echo and send-key, which are two
other variants of argv commands.
* tools/virsh.pod (snapshot-create-as): Document when a literal
--diskspec must preceed a diskspec argument.
* tools/virsh.c (vshCmddefHelp): Update help output for argv when
naming the option is useful.
(vshCmddefGetData): Fix logic on when argv was seen.
* tests/virsh-optparse: Add tests to avoid regressions.
Commit 498d783 cleans up some of virtual file names for parsing strings
in memory. This patch cleans up (hopefuly) the rest forgotten by the
first patch.
This patch also changes all of the previously modified "filenames" to
valid URI's replacing spaces for underscores.
Changes to v1:
- Replace all spaces for underscores, so that the strings form valid
URI's
- Replace spaces in places changed by commit 498d783
Commit ffe28ab74b introduced regression
while communicating with older libvirtd command 'domblkstat' used the new
API and did not check for VIR_ERR_RPC error code signalling the remote
server does not support this API and did not fall back to older API.
Thereafter 'domblkstat' ended with "error: unknown procedure: 243".
While parsing XML strings from memory, the previous convention in
libvirt was to set the virtual file name to "domain.xml" or something
similar. This could potentialy trick the user into looking for a file
named domain.xml on the disk in an attempt to fix the error.
This patch changes these filenames to something that can't be as easily
confused for a valid filename.
Examples of error messages:
---------------------------
Error while loading file from disk:
15:07:59.015: 527: error : catchXMLError:709 : /path/to/domain.xml:1: StartTag: invalid element name
<domain type='kvm'><
--------------------^
Error while parsing definition in memory:
15:08:43.581: 525: error : catchXMLError:709 : (domain definition):2: error parsing attribute name
<name>vm1</name>
--^
This has the added benefit of making 'snapshot-create dom --no-metadata'
now able to tell you the name of the just-generated snapshot.
* tools/virsh.c (vshSnapshotCreate, cmdSnapshotCurrent): Don't get
XML just for name.
Two new commands are added to virsh that wrap usage of
virDomainUpdateDeviceFlags for changing link state of domain's network
interfaces. These wrappers extract network devices's xml configuration
and modify the link state for easy manipulation from an user's perspective.
- domif-setlink - set link state of a domains virtual network interface
- domif-getlink - get link state
* tools/virsh.c - Add functionality to virsh
* tools/virsh.pod - Manpage documentation
The modified function fallbacks to use virDomainBlockStats if
virDomainBlockStatsFlags is not supported by the hypervisor driver.
If the new API is supported, it will be invoked instead of the
old API.
Expose the disk-only flag through virsh. Additionally, make
virsh snapshot-create-as take an arbitrary number of diskspecs,
which can be used to build up the xml for <domainsnapshot>.
* tools/virsh.c (cmdSnapshotCreate): Add --disk-only.
(cmdSnapshotCreateAs): Likewise, and add argv diskspec.
(vshParseSnapshotDiskspec): New helper function.
(vshCmddefGetOption): Allow naming of argv field.
* tools/virsh.pod (snapshot-create, snapshot-create-as): Document
them.
* tests/virsh-optparse: Test snapshot-create-as parsing.
This adds a convenience function to virsh that parses out block
information from the domain xml, making it much easier to see
what strings can be used in all other contexts that demand a
specific block name, especially when given the previous patch
that allows using either target or unique source name.
As an example on a domain with one disk and an empty cdrom drive:
Target Source
-------------------------------------------
vda /var/lib/libvirt/images/fedora_12.img
hdc -
* tools/virsh.c (cmdDomblklist): New function.
* tools/virsh.pod (domblklist): Document it.
I got confused when 'virsh domblkinfo dom disk' required the
path to a disk (which can be ambiguous, since a single file
can back multiple disks), rather than the unambiguous target
device name that I was using in disk snapshots. So, in true
developer fashion, I went for the best of both worlds - all
interfaces that operate on a disk (aka block) now accept
either the target name or the unambiguous path to the backing
file used by the disk.
* src/conf/domain_conf.h (virDomainDiskIndexByName): Add
parameter.
(virDomainDiskPathByName): New prototype.
* src/libvirt_private.syms (domain_conf.h): Export it.
* src/conf/domain_conf.c (virDomainDiskIndexByName): Also allow
searching by path, and decide whether ambiguity is okay.
(virDomainDiskPathByName): New function.
(virDomainDiskRemoveByName, virDomainSnapshotAlignDisks): Update
callers.
* src/qemu/qemu_driver.c (qemudDomainBlockPeek)
(qemuDomainAttachDeviceConfig, qemuDomainUpdateDeviceConfig)
(qemuDomainGetBlockInfo, qemuDiskPathToAlias): Likewise.
* src/qemu/qemu_process.c (qemuProcessFindDomainDiskByPath):
Likewise.
* src/libxl/libxl_driver.c (libxlDomainAttachDeviceDiskLive)
(libxlDomainDetachDeviceDiskLive, libxlDomainAttachDeviceConfig)
(libxlDomainUpdateDeviceConfig): Likewise.
* src/uml/uml_driver.c (umlDomainBlockPeek): Likewise.
* src/xen/xend_internal.c (xenDaemonDomainBlockPeek): Likewise.
* docs/formatsnapshot.html.in: Update documentation.
* tools/virsh.pod (domblkstat, domblkinfo): Likewise.
* docs/schemas/domaincommon.rng (diskTarget): Tighten pattern on
disk targets.
* docs/schemas/domainsnapshot.rng (disksnapshot): Update to match.
* tests/domainsnapshotxml2xmlin/disk_snapshot.xml: Update test.
In order to distinguish disk snapshots from system checkpoints, a
new state value that is only valid for snapshots is helpful.
* include/libvirt/libvirt.h.in (VIR_DOMAIN_LAST): New placeholder.
* src/conf/domain_conf.h (virDomainSnapshotState): New enum mapping.
(VIR_DOMAIN_DISK_SNAPSHOT): New internal enum value.
* src/conf/domain_conf.c (virDomainState): Use placeholder.
(virDomainSnapshotState): Extend mapping by one for use in snapshot.
(virDomainSnapshotDefParseString, virDomainSnapshotDefFormat):
Handle new state.
(virDomainObjSetState, virDomainStateReasonToString)
(virDomainStateReasonFromString): Avoid compiler warnings.
* tools/virsh.c (vshDomainState, vshDomainStateReasonToString):
Likewise.
* src/libvirt_private.syms (domain_conf.h): Export new functions.
* docs/schemas/domainsnapshot.rng: Tighten state definition.
* docs/formatsnapshot.html.in: Document it.
* tests/domainsnapshotxml2xmlout/disk_snapshot.xml: New test.
Easy enough to emulate even with older servers.
* tools/virsh.c (cmdSnapshotCreate, cmdSnapshotCreateAs): Add
--halt flag.
(vshSnapshotCreate): Emulate halt when flag is unsupported.
* tools/virsh.pod (snapshot-create, snapshot-create-as): Document
it.
It would technically be possible to have virsh compute the list
of descendants of a given snapshot, then delete those one at
a time. But it's complex, and not worth writing for a first
cut at implementing the new flags.
* tools/virsh.c (cmdSnapshotDelete): Add --children-only,
--metadata.
* tools/virsh.pod (snapshot-delete): Document them.
Similar to 'undefine --managed-save' (commit 83e849c1), we must
assume that the old API is unsafe; however, we cannot emulate
metadata-only deletion on older servers. Additionally, we have
the wrinkle that while virDomainUndefineFlags and managed save
cleanup were introduced in 0.9.4, it wasn't until 0.9.5 that
snapshots block undefine of a domain. Do the best we can given
the server we are talking to.
* tools/virsh.c (cmdUndefine): Add --snapshots-metadata flag.
* tools/virsh.pod (undefine, destroy, shutdown): Document effect
of snapshots.
Wire up the new snapshot creation flags in virsh. For convenience,
teach 'snapshot-current' how to make an existing snapshot become
current (can be used after upgrading to newer libvirt to recover
from the fact that the older libvirt lost track of the current
snapshot after a restart). The snapshot-create-as command is
intentionally not taught --redefine or --current, as this would
imply adding a lot of other options for everything else that can
appear in the <domainsnapshot> xml, but which is normally read-only.
Besides, redefining will usually be done on files created by
snapshot-dumpxml, rather than something built up by hand on the
command line. And now that we can redefine, we can edit.
* tools/virsh.c (cmdSnapshotCreate): Add --redefine, --current,
and --no-metadata.
(cmdSnapshotCreateAs): Add --no-metadata.
(cmdSnapshotCurrent): Add snapshotname to alter current snapshot.
(cmdSnapshotEdit): New command.
* tools/virsh.pod (snapshot-create, snapshot-create-as)
(snapshot-current, snapshot-edit): Document these.
The next patch will make snapshot creation more complex, so it's
better to avoid repetition of the complexity.
* tools/virsh.c (vshSnapshotCreate): New helper function.
(cmdSnapshotCreate, cmdSnapshotCreateAs): Use it.
New flag bits are worth exposing via virsh. In the case of
snapshot-list --roots, it's possible to emulate this even when
talking to an older server that lacks the bit; whereas
--metadata requires a newer server.
Although we don't use --security-info yet, the flag is already
documented for other dumpxml operations, and turning it on now
will make it useful when a future patch actually has to honor it.
* tools/virsh.c (cmdSnapshotDumpXML, cmdSnapshotCurrent): Add
--security-info.
(cmdSnapshotList): Add --roots, --metadata.
* tools/virsh.pod (snapshot-dumpxml, snapshot-current)
(snapshot-list): Document these.
Even though I recently added 'virsh snapshot-parent', doing it one
snapshot at a time is painful, so make it possible to expand the
snapshot-list table at once.
* tools/virsh.c (cmdSnapshotList): Add --parent.
* tools/virsh.pod (snapshot-list): Document it.
Pretty straight-forward exposure of new flags. For most commands,
we let the API reject mutually exclusive flags; but for save-image-edit,
we do the sanity check ourselves to avoid looping on flag failure if
the edit cycle is ever enhanced to allow the user to retry an edit
to fix up an xml validation error.
* tools/virsh.c (cmdManagedSave, cmdRestore, cmdSave)
(cmdSaveImageDefine, cmdSaveImageEdit): Add new flags.
* tools/virsh.pod (managedsave, restore, save, save-image-define)
(save-image-edit): Document them.
Newer QEMU introduced cache=directsync for -drive, this patchset
is to expose it in libvirt layer.
* Introduced a new QEMU capability flag ($prefix_CACHE_DIRECTSYNC),
As even $prefix_CACHE_V2 is set, we can't known if directsync
is supported.
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.
Managed save was added in 0.8.0, virDomainCreateWithFlags in 0.8.2,
and FORCE_BOOT in 0.9.5. The virsh flag is more useful if we
emulate it for all older servers (note that if a hypervisor fails
the query for a managed save image, then it does not have one to
be removed, so the flag can be safely ignored).
* tools/virsh.c (cmdStart): Add emulation for new flag.
* tools/virsh.c: fix memory leak on cmdVolCreateAs function.
* Detected in valgrind run:
==4746==
==4746== 48 (40 direct, 8 indirect) bytes in 1 blocks are definitely lost in loss record 26 of 52
==4746== at 0x4A04A28: calloc (vg_replace_malloc.c:467)
==4746== by 0x4C76E51: virAlloc (memory.c:101)
==4746== by 0x4CD9418: virGetStoragePool (datatypes.c:592)
==4746== by 0x4D21367: remoteStoragePoolLookupByName (remote_driver.c:4126)
==4746== by 0x4CE42B0: virStoragePoolLookupByName (libvirt.c:10232)
==4746== by 0x40C276: vshCommandOptPoolBy (virsh.c:13660)
==4746== by 0x40CA37: cmdVolCreateAs (virsh.c:8094)
==4746== by 0x412AF2: vshCommandRun (virsh.c:13770)
==4746== by 0x422F11: main (virsh.c:15127)
==4746==
==4746== 1,011 bytes in 1 blocks are definitely lost in loss record 45 of 52
==4746== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==4746== by 0x4A06167: realloc (vg_replace_malloc.c:525)
==4746== by 0x4C76ECB: virReallocN (memory.c:161)
==4746== by 0x4C60319: virBufferGrow (buf.c:72)
==4746== by 0x4C606AA: virBufferAdd (buf.c:106)
==4746== by 0x40CB37: cmdVolCreateAs (virsh.c:8118)
==4746== by 0x412AF2: vshCommandRun (virsh.c:13770)
==4746== by 0x422F11: main (virsh.c:15127)
==4746==
==4746== LEAK SUMMARY:
==4746== definitely lost: 1,051 bytes in 2 blocks
==4746== indirectly lost: 8 bytes in 1 blocks
==4746== possibly lost: 0 bytes in 0 blocks
==4746== still reachable: 390,767 bytes in 1,373 blocks
==4746== suppressed: 0 bytes in 0 blocks
* How to reproduce?
% valgrind -v --leak-check=full virsh vol-create-as default foo.img 10M \
--allocation 0 --format qcow2 --backing-vol bar.img
Notes: bar.img doesn't exist.
Signed-off-by: Alex Jia <ajia@redhat.com>
virsh had some leftover 'int flags', and even an 'int flag'
declaration, compared to our preferred style of 'unsigned int flags'.
* tools/virsh.c (cmdUndefine, cmdSave, cmdSaveImageDumpxml)
(cmdSaveImageEdit, cmdManagedSave, cmdRestore, cmdDump)
(cmdVcpuPin, cmdSetvcpus, cmdSetmem, cmdSetmaxmem, cmdDumpXML)
(cmdDomXMLFromNative, cmdDomXMLToNative, doMigrate)
(cmdInterfaceEdit, cmdInterfaceDumpXML, cmdEdit): Match coding
style for flags.
(struct vshComdOptDef): Rename field member.
(vshCmddefOptParse, vshCmddefHelp): Adjust clients.
There have been several instances of people having problems with
a broken managed save file, and not 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.
This patch updates the man page about virsh schedinfo command.
- fix typo: 1844674407370955 -> 18446744073709551
- describe the value 0 of vcpu_period and vcpu_quota parameters
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Knowing whether 'virsh start' will resume a saved image or do
a fresh boot is useful enough to expose via 'virsh list'.
Also, translate the state column.
* tools/virsh.c (cmdList): add --managed-save flag
* tools/virsh.pod (list): Document it.
Based on a suggestion by Miklos Vajna.
Without this patch, invoking 'virsh >file 2>&1' results in
error messages appearing before normal output, even if they
occurred later in time than the normal output (since stderr
is unbuffered, but stdout waits until a full buffer).
* tools/virsh.c (print_job_progress, vshError): Flush between
stream transitions.
* tests/undefine: Test it.
Call me lazy, but:
virsh qemu-monitor-command dom --hmp info status
is nicer than:
virsh qemu-monitor-command dom --hmp 'info status'
* tools/virsh.c (cmdQemuMonitorCommand): Allow multiple arguments,
for convenience.
After running 'virsh console' in interactive mode, there was a
missing call to virStreamAbort, which meant the server kept the
stream resources open
* tools/console.c: Abort stream when exiting
The public API documents that undefine may be used to transition a
running persistent domain into a transient one. Many drivers still
do not support this usage, but virsh shouldn't be getting in the
way of those that do support it.
This also drops a redundant conditional; vshCommandOptString
guaranteed that name was non-NULL.
* tools/virsh.c (cmdUndefine): Allow undefine on active domains;
the drivers may still reject it, but it is a valid API usage.
* tests/undefine (error): Fix the test to match.
Down the road, I want to add virDomainSnapshotGetParent, and use
the new API rather than xml scraping; but this virsh command can
be implemented even without the new API.
* tools/virsh.c (cmdSnapshotParent): New command.
* tools/virsh.pod (snapshot-parent): Document it.
Sometimes, full XML is too much; since most snapshot commands
operate on a snapshot name, there should be an easy way to get
at the current snapshot's name. For example:
virsh snapshot-revert dom `virsh snapshot-current dom --name`
* tools/virsh.c (cmdSnapshotCurrent): Add an option.
* tools/virsh.pod (snapshot-current): Document it.
This commands don't have a --pool option, so don't tell
vshCommandOptVolBy that there could be one. This made
vshCommandOptString for pooloptname fail and an "missing option"
error was reported.
Make pooloptname optional for vshCommandOptVolBy.
Gettext annoyingly modifies CPPFLAGS in-place, putting
-I/usr/local/include into the search patch if libintl headers
must be used from that location. But since we must support
automake 1.9.6 which lacks AM_CPPFLAGS, and since CPPFLAGS is used
prior to INCLUDES, this means that the build picks up the _old_
installed libvirt.h in priority to the in-tree version, leading
to all sorts of weird build failures on FreeBSD.
Fix this by teaching configure to undo gettext's actions, but
to keep any changes required by gettext at the end of INCLUDES
after all in-tree locations are used first. Also requires
adding a wrapper Makefile.am and making gnulib-tool create
just gnulib.mk files during the bootstrap process.
Signed-off-by: Eric Blake <eblake@redhat.com>
I went with the shorter license notice used by src/libvirt.c,
rather than spelling out the full LGPLv2+ clause into each of
these files.
* configure.ac: Declare copyright.
* all Makefile.am: Likewise.
* tools/virsh.c: fix missing zero value judgement in cmdBlkiotune and correct
vshError information.
when weight is equal to 0, the cmdBlkiotune will not raise any error information
when judge weight value first time, and execute else branch to judge weight
value again, strncpy(temp->field, VIR_DOMAIN_BLKIO_WEIGHT, sizeof(temp->field))
will be not executed for ever. However, if and only if param->field is equal
to VIR_DOMAIN_BLKIO_WEIGHT, underlying qemuDomainSetBlkioParameters function
will check whether weight value is in range [100, 1000].
* how to reproduce?
% virsh blkiotune ${guestname} --weight 0
Signed-off-by: Alex Jia <ajia@redhat.com>
* tools/virsh.c: avoid memory leak in cmdVolPath.
* src/libvirt.c: Add doc for virStorageVolGetPath to tell one
must free() the returned path after use.
* how to reproduce?
% dd if=/dev/zero of=/var/lib/libvirt/images/foo.img count=1 bs=10M
% virsh pool-refresh default
% valgrind -v --leak-check=full virsh vol-path --vol \
/var/lib/libvirt/images/foo.img
* actual results:
Detected in valgrind run:
==16436== 32 bytes in 1 blocks are definitely lost in loss record 7 of 22
==16436== at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
==16436== by 0x386A314B3D: xdr_string (in /lib64/libc-2.12.so)
==16436== by 0x3DF8CD770D: xdr_remote_nonnull_string (remote_protocol.c:3
==16436== by 0x3DF8CD7EC8: xdr_remote_storage_vol_get_path_ret
% virsh pool-refresh default
% valgrind -v --leak-check=full virsh vol-path --vol \
/var/lib/libvirt/images/foo.img
Signed-off-by: Alex Jia <ajia@redhat.com>
The description of the list command seemed to suggest that it could
take a set of domains as an argument, which is not correct in the
current HEAD. If virsh list is intended to take a list of domains,
then this patch should be NAK'd and a bug opened against virsh list.
Reported by hachi on #virt
v2:
Change language to include transient domains
Osier pointed out that transient domains are not defined, so what I
had originally proposed wasn't quite correct.
Rename the existing --current flag to the new name --active,
while adding a new flag --current to expose the new
VIR_DOMAIN_AFFECT_CURRENT flag of virDomainGetVcpusFlags.
For backwards compability, the output does not change (even
though the label "current" no longer matches the spelling of
the option that would trigger that number in isolation), and
we accept "--current --live" as an undocumented synonym for
"--active --live" to avoid breaking any existing clients.
* tools/virsh.c (cmdVcpucount): Add --active flag, and rearrange
existing flag handling to expose VIR_DOMAIN_AFFECT_CURRENT support.
* tools/virsh.pod (vcpucount): Document this.
Define two new virsh commands:
* blockpull: Initiate a blockPull for the given disk
* blockjob: Retrieve progress info, modify speed, and cancel active block jobs
Share print_job_progress() with the migration code.
* tools/virsh.c: implement the new commands
Now you can edit a saved state file even if you forgot to grab
a dumpxml file prior to saving a domain. Plus, in-place editing
feels so much nicer.
* tools/virsh.c (cmdSaveImageDumpxml, cmdSaveImageDefine)
(cmdSaveImageEdit): New commands.
* tools/virsh.pod (save-image-dumpxml, save-image-define)
(save-image-edit): Document them.
libvirt-guests is a perfect use case for bypassing the file system
cache - lots of filesystem traffic done at system shutdown, where
caching is pointless, and startup, where reading large files only
once just gets in the way. Make this a configurable option in the
init script, but defaulting to existing behavior.
* tools/libvirt-guests.sysconf (BYPASS_CACHE): New variable.
* tools/libvirt-guests.init.sh (start, suspend_guest): Use it.
Also, migrate was missing documentation for the --xml option
added in commit ec5301cb.
* tools/virsh.c (cmdSave, cmdRestore): Add xml argument.
* tools/virsh.pod (save, restore, migrate): Document it.
Wire up the new flag to several virsh commands. Also, the
'dump' command had undocumented flags.
* tools/virsh.c (cmdSave, cmdManagedSave, cmdDump, cmdStart)
(cmdRestore): Add new flag.
* tools/virsh.pod (save, managedsave, dump, start, restore):
Document flags.
If the domain has managed save image, and --managed-save is
not specified, then it fails with an error telling the user
that a managed save image still exists.
If the domain has managed save image, and --managed-save is
specified, it invokes virDomainUndefineFlags. If
virDomainUndefineFlags fails, then it tries to remove the managed
save image using virDomainManagedSaveRemove first, with
invoking virDomainUndefine following. (For compatibility between
new virsh with this patch and older libvirt without this patch).
Similarly if the domain has no managed save image. See the codes for
detail.
NOTE: Have not removing the codes checking if the domain is running
in function "cmdUndefine", it will go along with qemu driver's fix
(allow to undefine a running domain).
* tools/virsh.c: new column "Managed save" for "cmdDominfo".
* tools/virsh.pod: Update document of "managedsave" to tell one can
use "dominfo" to query whether a domain has any managed save image.
We can make the virsh migrate UI friendlier by supplying the
missing bit automatically instead of erroring out when requesting
--tunnelled without --p2p.
* tools/virsh.c (doMigrate): Make --p2p optional when using
--tunnelled.
* tools/virsh.pod (migrate): Tweak wording accordingly.
* tools/virsh.c: avoid double free of domain, when weight value of blkiotune
less than 0, codes will free domain and jump to cleanup section, however,
cleanup will free domain again.
Detected in valgrind run:
==21297== ERROR SUMMARY: 20 errors from 20 contexts (suppressed: 69 from 8)
==21297==
==21297== 1 errors in context 1 of 20:
==21297== Invalid read of size 4
==21297== at 0x40E209B: virDomainFree (libvirt.c:2096)
==21297== by 0x8065274: cmdBlkiotune (virsh.c:3695)
==21297== by 0x8054CC1: vshCommandRun (virsh.c:13135)
==21297== by 0x806B967: main (virsh.c:14487)
==21297== Address 0x446ad48 is 0 bytes inside a block of size 36 free'd
==21297== at 0x4005B0A: free (vg_replace_malloc.c:325)
==21297== by 0x406814D: virFree (memory.c:310)
==21297== by 0x40D6635: virReleaseDomain (datatypes.c:243)
==21297== by 0x40D6C5E: virUnrefDomain (datatypes.c:280)
==21297== by 0x40E20B9: virDomainFree (libvirt.c:2101)
==21297== by 0x8065297: cmdBlkiotune (virsh.c:3613)
==21297== by 0x8054CC1: vshCommandRun (virsh.c:13135)
==21297== by 0x806B967: main (virsh.c:14487)
==21297==
==21297==
==21297== 1 errors in context 2 of 20:
==21297== Invalid read of size 4
==21297== at 0x40E1FE6: virDomainFree (libvirt.c:2092)
==21297== by 0x8065274: cmdBlkiotune (virsh.c:3695)
==21297== by 0x8054CC1: vshCommandRun (virsh.c:13135)
==21297== by 0x806B967: main (virsh.c:14487)
==21297== Address 0x446ad48 is 0 bytes inside a block of size 36 free'd
==21297== at 0x4005B0A: free (vg_replace_malloc.c:325)
==21297== by 0x406814D: virFree (memory.c:310)
==21297== by 0x40D6635: virReleaseDomain (datatypes.c:243)
==21297== by 0x40D6C5E: virUnrefDomain (datatypes.c:280)
==21297== by 0x40E20B9: virDomainFree (libvirt.c:2101)
==21297== by 0x8065297: cmdBlkiotune (virsh.c:3613)
==21297== by 0x8054CC1: vshCommandRun (virsh.c:13135)
==21297== by 0x806B967: main (virsh.c:14487)
* how to reproduce?
% valgrind -v --leak-check=full virsh blkiotune guestname --weight -1
"optional" is not a very good meta-syntactic construct in our man
page. I scrubbed this, and additionally improved some documentation
on mutually exclusive options. For example,
[[--live] [--config] | [--current]]
implies a set of optional flags, where within the set you can have
either --current or a choice of 0, 1, or both --live and --config.
* tools/virsh.pod: Use "[name]" rather than "optional name" for
optional arguments.
The documentation for vshCommandOptString claims that it returns
-1 on a missing required argument, but in reality, that error
message was unreachable (it was buried inside an if clause that
is true only if the argument was present). The code was so hairy
that I decided a rewrite would make it easier to understand,
and actually return the error values we want.
Meanwhile, our construction guarantees that all vshCmdOpt have
a non-null def member, so there are some redundant checks that
can be trimmed.
* tools/virsh.c (vshCommandOpt): Alter signature.
(vshCommandOptInt, vshCommandOptUInt, vshCommandOptUL)
(vshCommandOptString, vshCommandOptLongLong)
(vshCommandOptULongLong, vshCommandOptBool): Adjust all callers.
(vshCommandOptArgv): Remove dead condition.
This adds four options for virsh command attach-disk.
--cache option allows user to specify cache mode of disk device
from virsh command line when attaching a disk device.
--serial option allows user to specify serial string of disk device
from virsh command line when attaching a disk device.
--shareable option allows user to specify whether the disk device is
shareable between domains when attaching a disk device from virsh
command line.
--address option allows user to specify address of disk device when
attaching a disk device.
This patch adds the --current option to "virsh setvcpus"
command. Currently "virsh setvcpus" command supports
"--live" and "--config" , but "--current" option.
From view of consistency, it's reasonable to support
"--current" option too.
When --current is specified, it affects a "current"
domain.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Valid loglevel range for virsh is 0-4. Update virsh man page
accordingly. Also explain virsh ENV variables and values.
Signed-off-by: Supriya Kannery <supriyak@in.ibm.com>
The last patch breaks make check for two reasons. First, it reverses the
condition but leaves default level unchanged, so instead of not printing
anything but errors before the patch it now prints all debug messages by
default. Second, you forgot to change -d5 option passed to virsh in
tests/virsh-optparse to -d0; the script wants to see all debug messages.
Aligning loglevel values of virsh to that of libvirt.
"DEBUG"=0 loglevel, when specified through commandline or
env variable, should log all the messages. "ERROR=4"
should log only error messages.
Signed-off-by: Supriya Kannery <supriyak@in.ibm.com>
Destroy has a rather negative English connotation. Try to reduce
the impact, so newbies aren't as scared to use it.
* tools/virsh.c: Tweak all destroy documentation.
* tools/virsh.pod: Likewise.
Detected by Coverity. info.nrVirtCpu is unsigned short, but if
cpumaplen is int, then the product of the two in vshMalloc risks
unintended sign extension. cmdVcpuinfo had already solved this
by using size_t cpumaplen.
* tools/virsh.c (cmdVcpuPin): Use correct type.
virt-sanlock-cleanup.8 has static contents (no dependency on
configure), but is generated by pod2man (a perl dependency that
maintainers must have, but which ordinary tarball users need
not have). Therefore, ensure that it is always part of the
tarball, even though it is only conditionally installed.
This is similar to commit 6db98a2d4b, but made simpler by the fact
that the .8 page is static content.
* tools/Makefile.am (EXTRA_DIST): Add virt-sanlock-cleanup.8.
The current sanlock plugin requires a central management
application to manually add <lease> elements to each guest,
to protect resources that are assigned to it (eg writable
disks). This makes the sanlock plugin useless for usage
in more ad hoc deployment environments where there is no
central authority to associate disks with leases.
This patch adds a mode where the sanlock plugin will
automatically create leases for each assigned read-write
disk, using a md5 checksum of the fully qualified disk
path. This can work pretty well if guests are using
stable disk paths for block devices eg /dev/disk/by-path/XXXX
symlinks, or if all hosts have NFS volumes mounted in
a consistent pattern.
The plugin will create one lockspace for managing disks
with filename /var/lib/libvirt/sanlock/__LIBVIRT__DISKS__.
For each VM disks, there will be another file to hold
a lease /var/lib/libvirt/sanlock/5903e5d25e087e60a20fe4566fab41fd
Each VM disk lease is usually 1 MB in size. The script
virt-sanlock-cleanup should be run periodically to remove
unused lease files from the lockspace directory.
To make use of this capability the admin will need to do
several tasks:
- Mount an NFS volume (or other shared filesystem)
on /var/lib/libvirt/sanlock
- Configure 'host_id' in /etc/libvirt/qemu-sanlock.conf
with a unique value for each host with the same NFS
mount
- Toggle the 'auto_disk_leases' parameter in qemu-sanlock.conf
Technically the first step can be skipped, in which case
sanlock will only protect against 2 vms on the same host
using the same disk (or the same VM being started twice
due to error by libvirt).
* src/locking/libvirt_sanlock.aug,
src/locking/sanlock.conf,
src/locking/test_libvirt_sanlock.aug: Add config params
for configuring auto lease setup
* libvirt.spec.in: Add virt-sanlock-cleanup program, man
page
* tools/virt-sanlock-cleanup.in: Script to purge unused
disk resource lease files
We already have a public virDomainPinVcpu, which implies that
Pin and Vcpu are treated as separate words. Unreleased commit
e261987c introduced virDomainGetVcpupinInfo as the first public
API that used Vcpupin, although we had prior internal uses of
that spelling. For consistency, change the spelling to be two
words everywhere, regardless of whether pin comes first or last.
* daemon/remote.c: Treat vcpu and pin as separate words.
* include/libvirt/libvirt.h.in: Likewise.
* src/conf/domain_conf.c: Likewise.
* src/conf/domain_conf.h: Likewise.
* src/driver.h: Likewise.
* src/libvirt.c: Likewise.
* src/libvirt_private.syms: Likewise.
* src/libvirt_public.syms: Likewise.
* src/libxl/libxl_driver.c: Likewise.
* src/qemu/qemu_driver.c: Likewise.
* src/remote/remote_driver.c: Likewise.
* src/xen/xend_internal.c: Likewise.
* tools/virsh.c: Likewise.
* src/remote/remote_protocol.x: Likewise.
* src/remote_protocol-structs: Likewise.
Suggested by Matthias Bolte.
This patch teaches "virsh vcpupin" command to query if no list
is given. Its feature is to show CPU affinity information in more
reader-friendly way.
# virsh vcpupin VM --config
VCPU: CPU Affinity
----------------------------------
0: 1-6,9-20
1: 10
2: 5,9-11,15-20
3: 1,3,5,7,9,11,13,15
When cpulist is omitted, vcpu number is optional. When vcpu number is
provided, information of only specified vcpu is displayed.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
The "virsh vcpuinfo" command results in failure when the target domain
is inactive on KVM. This patch improves this behavior by adding the
fallback to invoke virDomainGetVcpupinInfo API in case of
virDomainGetVcpus API returns error and the target domain is inactive.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
If an application is using libvirt + KVM as a piece of its
internal infrastructure to perform a specific task, it can
be desirable to guarentee the VM dies when the virConnectPtr
disconnects from libvirtd. This ensures the app can't leak
any VMs it was using. Adding VIR_DOMAIN_START_AUTOKILL as
a flag when starting guests enables this to be done.
* include/libvirt/libvirt.h.in: All VIR_DOMAIN_START_AUTOKILL
* src/qemu/qemu_driver.c: Support automatic killing of guests
upon connection close
* tools/virsh.c: Add --autokill flag to 'start' and 'create'
commands
We weren't using the @FOO@ notation for a Makefile substitution,
but instead for a sed rule, so using [@]FOO@ instead avoids the
need to exempt this syntax check.
* cfg.mk (_makefile_at_at_check_exceptions): Delete.
* tools/Makefile.am (virt-xml-validate, virt-pki-validate): Avoid
tripping syntax-check.
Reported by Daniel P. Berrange.
https://bugzilla.redhat.com/show_bug.cgi?id=682121
Gettext reserves the empty string for internal use, and it must
not be passed through _(). We were violating this for commands
that (for whatever reason) used "" for their description.
* tools/virsh.c (vshCmddefHelp): Don't translate empty string.
Reported by Tatsuo Kawasaki.
Since we virEventRegisterDefaultImpl is now a public API, callers need
a way to invoke the default registered Handle and Timeout functions. We
already have general functions for these internally, so promote
them to the public API.
v2:
Actually add APIs to libvirt.h
Producing an xml file just for name and description fields is
overkill; this makes life easier from virsh.
* tools/virsh.c (cmdSnapshotCreateAs): New command.
(snapshotCmds): Install it.
* tools/virsh.pod: Document it.
The 'char *cur' variable was being assigned from a
'const char *' string, thus discarding constness.
As well as causing a compile warning, it masked a
piece of code which attempts to assign to the
previously const string.
* tools/virsh.c: Fix const-ness of 'cur' variable in vcpupin
When resetting vcpupin setting, we have to specify all host physical
cpus as a cpulist parameter of virsh vcpupin command. It's a little
tedious.
This patch changes to allow to receive the special keyword 'r' as a cpulist
parameter of virsh vcpupin command when resetting vcpupin setting.
If you set the following:
# virsh vcpupin VM 0 r
the vcpu0 will be pinned to all physical cpus.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
When using vcpupin command, we have to speficy comma-separated list as cpulist,
but this is tedious in case the number of phsycal cpus is large.
This patch improves this by introducing special markup "-" and "^" which are
similar to XML schema of "cpuset" attribute.
The example:
# virsh vcpupin Guest 0 0-15,^8
is identical to
# virsh vcpupin Guest 0 0,1,2,3,4,5,6,7,9,10,11,12,13,14,15
NOTE: The expression is sequentially evaluated, so "0-15,^8" is not identical
to "^8,0-15".
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This reduces things from O(n^2) to O(n).
* tools/virsh.c (vshCommandOptArgv): Change signature.
(cmdEcho): Update caller.
Based on a patch by Lai Jiangshan.
Define two new virsh commands:
* blockpull: Perform block pull operations (incremental plus start
and stop continuous streams)
* blockpullinfo: Retrieve progress info for continuous block pull
Share print_job_progress() with the migration code.
* tools/virsh.c: implement the new commands
Signed-off-by: Adam Litke <agl@us.ibm.com>
A VSH_OFLAG_REQ_OPT option means --optionname is required when used.
It will kill any ambiguity, even a !VSH_OFLAG_REQ option listed before
a VSH_OFLAG_REQ option, if the !VSH_OFLAG_REQ option is a
VSH_OFLAG_REQ_OPT option.
It will help us use optional argument with VSH_OT_ARGV argument.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
A name will improve the usege, example
# virsh help echo
NAME
echo - echo arguments
SYNOPSIS
echo [--shell] [--xml] [<string>]...
DESCRIPTION
Echo back arguments, possibly with quoting.
OPTIONS
--shell escape for shell use
--xml escape for XML use
<string> arguments to echo
"[<string>]..." is added to SYNOPSIS.
"<string> arguments to echo" is added to OPTIONS.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Qemu once supported following memory stats which will returned by
"query_balloon":
stat_put(dict, "actual", actual);
stat_put(dict, "mem_swapped_in", dev->stats[VIRTIO_BALLOON_S_SWAP_IN]);
stat_put(dict, "mem_swapped_out", dev->stats[VIRTIO_BALLOON_S_SWAP_OUT]);
stat_put(dict, "major_page_faults", dev->stats[VIRTIO_BALLOON_S_MAJFLT]);
stat_put(dict, "minor_page_faults", dev->stats[VIRTIO_BALLOON_S_MINFLT]);
stat_put(dict, "free_mem", dev->stats[VIRTIO_BALLOON_S_MEMFREE]);
stat_put(dict, "total_mem", dev->stats[VIRTIO_BALLOON_S_MEMTOT]);
But it later disabled all the stats except "actual" by commit
07b0403dfc2b2ac179ae5b48105096cc2d03375a.
libvirt doesn't parse "actual", so user will always see a empty result
with "virsh dommemstat $domain". Even qemu haven't disabled the stats,
we should support parsing "actual".
This patch deprecates following enums:
VIR_DOMAIN_MEM_CURRENT
VIR_DOMAIN_MEM_LIVE
VIR_DOMAIN_MEM_CONFIG
VIR_DOMAIN_VCPU_LIVE
VIR_DOMAIN_VCPU_CONFIG
VIR_DOMAIN_DEVICE_MODIFY_CURRENT
VIR_DOMAIN_DEVICE_MODIFY_LIVE
VIR_DOMAIN_DEVICE_MODIFY_CONFIG
And modify internal codes to use virDomainModificationImpact.
This patch adds the new option (--live, --config and --current) to
"virsh vcpupin" command. The behavior of above aption is the same as
that of "virsh setmem", "virsh setvcpus", and whatnot.
When the --config option is specified, the command affects a persistent
domain, while --live option is specified, it affects a running (live) domain.
The --current option cannot be used with --config or --live at the same
time, and when --current is specified, it affects a "current" domain.
Coverity complained about these intentional fallthrough cases, but
not about other cases that were explicitly marked with nice comments.
For some reason, Coverity doesn't seem smart enough to parse the
up-front English comment in virsh about intentional fallthrough :)
* tools/virsh.c (cmdVolSize): Mark fallthrough in a more typical
fashion.
* src/conf/nwfilter_conf.c (virNWFilterRuleDefDetailsFormat)
(virNWFilterRuleDetailsParse): Mark explicit fallthrough.
This commit is safe precisely because there has been no release
for any of the enum values being deleted (they were added post-0.9.1).
After the 0.9.2 release, we can then take advantage of
virDomainModificationImpact in more places.
* include/libvirt/libvirt.h.in (virDomainModificationImpact): New
enum.
(virDomainSchedParameterFlags, virMemoryParamFlags): Delete, since
these were never released, and the new enum works fine here.
* src/libvirt.c (virDomainGetMemoryParameters)
(virDomainSetMemoryParameters)
(virDomainGetSchedulerParametersFlags)
(virDomainSetSchedulerParametersFlags): Update documentation.
* src/qemu/qemu_driver.c (qemuDomainSetMemoryParameters)
(qemuDomainGetMemoryParameters, qemuSetSchedulerParametersFlags)
(qemuSetSchedulerParameters, qemuGetSchedulerParametersFlags)
(qemuGetSchedulerParameters): Adjust clients.
* tools/virsh.c (cmdSchedinfo, cmdMemtune): Likewise.
Based on ideas by Daniel Veillard and Hu Tao.
I intentionally set things up so 'virsh help interface' lists
commands in alphabetical order, but 'man virsh' lists them in
topical order; this matches our practice on some other commands.
* tools/virsh.pod: Document all iface commands.
* tools/virsh.c (ifaceCmds): Sort.
The virSysinfoIsEqual method was mistakenly inside a #ifndef WIN32
conditional.
The existing virSysinfoFormat is also stubbed out on Win32, even
though the code works without any trouble. This breaks XML output
on Win32, so the stub is removed.
virsh migrate mistakenly had some variables inside the conditional
* src/util/sysinfo.c: Build virSysinfoIsEqual on Win32 and remove
Win32 stub for virSysinfoFormat
* tools/virsh.c: Fix variable declaration on Win32
Switch virsh migrate over to use virDomainMigrate2 and
virDomainMigrateToURI2. This is still compatible with
older libvirts, because these methods dynamically choose
whether to perform v1, v2 or v3 migration based on declared
RPC support from the libvirtd instances
Add a --xml arg which allows the user to pass in a custom
XML document. This XML document must be ABI compatible
with the current *live* XML document for the running guest
on the source host. ABI compatibility will be enforced by
any driver supporting this function
* tools/virsh.c: Add '--xml' arg to migrate command
Since we can now set just --live or --config, we also need to be
able to query that back.
In the case of setting both --live and --config, it shouldn't matter
which value we read back; otherwise, since querying treats the two
flags as mutually exclusive, so does this patch.
* tools/virsh.c (cmdSchedinfo): Use new API where appropriate.
The new flags allow to pick current state, config or the live
parameter, with current being the existing API default (0).
This also hooks this to --config, --live, --current parameters for
the memtune virsh command
* include/libvirt/libvirt.h.in: defines the new flags
* tools/virsh.c: adds support at virsh level
* tools/virsh.pod: updates virsh documentation
Ramon de Carvalho Valle reported a problem with:
virsh connect qemu:///system
as a non-root user. The real root problem appears to be a regression
in libvirtd being auto-started on the default qemu:///session URI;
however, the symptom points to an independent flaw in virsh - we
shouldn't be wasting efforts on making a connection if we aren't going
to be using that connection. Fixing virsh avoids Ramon's issue, while
I work in the meantime to fix the real libvirtd regression.
This patch looks big, but that's because 'gcc -Wmissing-field-initializers'
gets triggered by './autobuild.sh --enable-compile-warnings=error', so I
had to add 0 initialization to everyone (rather than my preference of
just adding the non-zero flags to virshCmds and to cmdConnect).
Meanwhile, if you use 'virsh -c URI', the connection must succeed; this
patch _only_ optimizes the default connection to be deferred to a later
point where we know if a particular command to be run needs a connection.
* tools/virsh.c (VSH_CMD_FLAG_NOCONNECT): New flag.
(vshCmdDef): Add new flags field.
(vshCommandRun): Honor new flag.
(domManagementCmds, domMonitoringCmds, storagePoolCmds)
(storageVolCmds, networkCmds, nodedevCmds, ifaceCmds)
(nwfilterCmds, secretCmds, virshCmds, snapshotCmds)
(hostAndHypervisorCmds): Populate new field.
(vshReconnect): Don't warn on initial connection.
virsh didn't call virInitialize(), which (among other things)
initializes virLastErr thread local variable. As a result of that, virsh
could just segfault in virEventRegisterDefaultImpl() since that is the
first call that touches (resets) virLastErr.
I have no idea what lucky coincidence made this bug visible but I was
able to reproduce it in 100% cases but only in one specific environment
which included building in sandbox.
We already have virAsprintf, so picking a similar name helps for
seeing a similar purpose. Furthermore, the prefix V before printf
generally implies 'va_list', even though this variant was '...', and
the old name got in the way of adding a new va_list version.
global rename performed with:
$ git grep -l virBufferVSprintf \
| xargs -L1 sed -i 's/virBufferVSprintf/virBufferAsprintf/g'
then revert the changes in ChangeLog-old.
Clang detected that vol-download will call unlink(NULL) if there
is a parse error during option parsing. Also, mingw doesn't like
unlinking an open file.
* tools/virsh.c (cmdVolDownload): Only unlink file if created.
Commit 36deff04 introduced a regression due to which virsh is not able
to log to a file - msg_buf was changed from an array to a pointer
without corresponding change to usage of "sizeof()".
Fix regression in virsh logging
Signed-off-by: Supriya Kannery <supriyak@in.ibm.com>
We don't use gnulib's sanitizations for vfprintf, but vshDebug
was used with %zu, which means that it would fail on mingw.
Thank goodness the compiler indirectly caught this for us :)
virsh.c: In function 'vshDebug':
virsh.c:12105:5: warning: function might be possible candidate for
'ms_printf' format attribute [-Wmissing-format-attribute]
since mingw <stdio.h> hasn't yet added gcc attributes to vfprintf.
* tools/virsh.c (vshDebug): Avoid vfprintf.
(vshPrintExtra): Use lighter-weight fputs.
Reported by Matthias Bolte.
This patch does the following things:
1. The return value of cmdSchedInfoUpdate() can be -1, 0 and 1. So the
type of return value should be int not bool.(This function is not a
entry of a virsh command, but the name of this function likes cmdXXX)
2. The type of cmdSchedinfo()'s, cmdFreecell()'s, cmdPoolList()'s and
cmdVolList()'s return value is bool not int, so change the type of
variable ret_val, func_ret and functionReturn.
3. Add a variable functionReturn for cmdMigrate(), cmdAttachInterface(),
cmdDetachInterface(), cmdAttachDisk() and cmdDetachDisk() to save the
return value.
4. Change the type of variable ret in the function cmdAttachDevice(),
cmdDetachDevice(), cmdUpdateDevice(), cmdAttachInterface(),
cmdDetachInterface(), cmdAttachDisk() and cmdDetachDisk() to int, as
we use it to save the return value of virXXX() and the type of virXXX()'s
return value is int not bool.
5. Do some cleanup when virBuff.error is 1.
The bug 1-4 were introduced by commit b56fa5bb.
Gnulib already guarantees <stdbool.h>, so it is easier to just
use the standardized spellings.
* tools/virsh.c (vshCmdDef): Change callback to return real bool.
(__vshControl): Change several fields to bool.
(vshCommandOptBool): Change return type.
All callers updated.
* tools/Makefile.am (virsh-net-edit.c, virsh-pool-edit.c):
Likewise.
Regression introduced in 0.8.5, commit c1564268. The command
'virsh freecell 0' quit working when it changed from an optional
string to an optional integer.
This patch introduces a slight change that specifying an option
twice is now detected as an error. It also changes things so
that a command that has more than 1 required option will not
complain about missing options if one but not all of the options
were given in long format, as in 'virsh vol-create --pool p file',
as well as making positional parsing work for all optional
options (each positional argument is associated with the earliest
option that has not yet been seen by name).
Optional boolean options can appear before required argument
options, because they don't affect positional argument parsing,
and obviously a required boolean option makes no sense.
Technically, this patch renders VSH_OT_STRING and VSH_OT_DATA
redundant; but cleaning that up can be a separate patch.
No command should ever need more than 32 options, right? :)
* tools/virsh.c (vshCmddefGetData, vshCmddefGetOption)
(vshCommandCheckOpts): Alter parameters to use bitmaps.
(vshCmddefOptParse): New function.
(vshCommandParse): Update for better handling of positional
arguments.
(vshCmddefHelp): Allow unit tests to validate options.
The current state of virsh parsing is that:
$ virsh vol-info /path/to/image
$ virsh vol-info --pool default /path/to/image
$ virsh vol-info --pool default --vol /path/to/image
all lookup the volume by path (technically, the last two also attempt
a name lookup within a pool, whereas the first skips that step, but
the end result is the same); meanwhile:
$ virsh vol-info default /path/to/image
complains about unexpected data. Why? Because the --pool option is
optional, so default was parsed as the --vol argument, and
/path/to/image.img doesn't match up with any remaining options that
require an argument. For proof, note that:
$ virsh vol-info default --vol /path/to/image
complains about looking up 'default' - the parser mis-associated both
arguments with --vol. Given the above, the only way to specify pool
is with an explicit "--pool" argument (you can't specify it
positionally). However, named arguments can appear in any order, so:
$ virsh vol-info /path/to/image --pool default
$ virsh vol-info --vol /path/to/image --pool default
have also always worked. Therefore, this patch has no functional
change on vol-info option parsing, but only on 'virsh help vol-info'
synopsis layout. However, it also allows the next patch to 1) enforce
that required options are always first (without this patch, the next
patch would fail the testsuite), and 2) allow the user to omit the
"--pool" argument. That is, the next patch makes it possible to do:
$ virsh vol-info /path/to/image default
which to date was not possible.
* tools/virsh.c (opts_vol_create_from, opts_vol_clone)
(opts_vol_upload, opts_vol_download, opts_vol_delete)
(opts_vol_wipe, opts_vol_info, opts_vol_dumpxml, opts_vol_key)
(opts_vol_path): List optional pool parameter after required
arguments.
Based on a smaller patch developed by Moritoshi Oshiro:
https://bugzilla.redhat.com/show_bug.cgi?id=693963
* tools/virsh.pod (freecell): Mention all, and clarify that
optional cellno requires --cellno.
This patch adds the new options (--live, --config, and --current) to
"virsh setmaxmem" command. The behavior of above options is the same
as that of "virsh setmem". When the --config option is specified, a
modification is effective for the persistent domain, while the --live
option is specified, a modification is effective for an active
domain. The --current option is specified, it affects a current
domain.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This patch adds the new option (--current) to the "virsh setmem" command.
When --current option is specified, it affects a "current" domain.
The word "current" denotes that if a domain is running, it affects
a running domain only; otherwise it affects a persistent domain.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
When the new maximum memory size becomes less than the current memory size,
I think it is not the libvirt client but the each driver that decides the behavior
(reject the operation or shrink the current memory size).
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
1) Both "qemuDomainStartWithFlags" and "qemuAutostartDomain" try to
restore the domain from managedsave'ed image if it exists (by
invoking "qemuDomainObjRestore"), but it unlinks the image even
if restoring fails, which causes data loss. (This problem exists
for "virsh managedsave dom; virsh start dom").
The fix for is to unlink the managed state file only if restoring
succeeded.
2) For "virsh save dom; virsh restore dom;", it can cause data
corruption if one reuse the saved state file for restoring. Add
doc to tell user about it.
3) In "qemuDomainObjStart", if "managed_save" is NULL, we shouldn't
fallback to start the domain, skipping it to cleanup as a incidental
fix. Discovered by Eric.
Commit 78ba748ef1 claims to fix
documentation for swap_hard_limit virsh memtune option but it only fixes
documentation in formatdomain.html and libvirt.h. This patch completes
the task by fixing "virsh help memtune" output and memtune section of
virsh man page.
strcase{cmp/str} have the drawback of being sensitive to the global
locale; this is unacceptable in a library setting. Prefer a
hard-coded C locale alternative for all but virsh, which is user
facing and where the global locale isn't changing externally.
* .gnulib: Update to latest, for c-strcasestr change.
* bootstrap.conf (gnulib_modules): Drop strcasestr, add c-strcase
and c-strcasestr.
* cfg.mk (sc_avoid_strcase): New rule.
(exclude_file_name_regexp--sc_avoid_strcase): New exception.
* src/internal.h (STRCASEEQ, STRCASENEQ, STRCASEEQLEN)
(STRCASENEQLEN): Adjust offenders.
* src/qemu/qemu_monitor_text.c (qemuMonitorTextEjectMedia):
Likewise.
* tools/virsh.c (namesorter): Document exception.
The new commands vol-upload and vol-download, allow a local file
to be transferred to/from a storage volume.
* tools/virsh.c: Add vol-upload and vol-download commands
* tools/virsh.pod: Document new commands
The Open Nebula driver has been unmaintained since it was first
introduced. The only commits have been for tree-wide cleanups.
It also has a major design flaw, in that it only knows about guests
that it has created itself, which makes it of very limited use.
Discussions wrt evolution of the VMWare ESX driver, concluded that
it should limit itself to single-node ESX operation and not try to
manage the multi-node architecture of VirtualCenter. Open Nebula
is a cluster like Virtual Center, not a single node system, so
the same reasoning applies.
The DeltaCloud project includes an Open Nebula driver and is a much
better fit architecturally, since it is explicitly targetting the
distributed multihost cluster scenario.
Thus this patch deletes the libvirt Open Nebula driver with the
recommendation that people use DeltaCloud for managing it instead.
* configure.ac: Remove probe for xmlrpc & --with-one arg
* daemon/Makefile.am, daemon/libvirtd.c, src/Makefile.am: Remove
ONE driver build
* src/opennebula/one_client.c, src/opennebula/one_client.h,
src/opennebula/one_conf.c, src/opennebula/one_conf.h,
src/opennebula/one_driver.c, src/opennebula/one_driver.c: Delete
files
* autobuild.sh, libvirt.spec.in, mingw32-libvirt.spec.in: Remove
build rules for Open Nebula
* docs/drivers.html.in, docs/sitemap.html.in: Remove reference
to OpenNebula
* docs/drvone.html.in: Delete file
"virsh connect ''" should try to connect to the default connection,
but the previous patch made it issue a warning about an invalid URI.
* tools/virsh.c (VSH_OFLAG_EMPTY_OK): New option flag.
(vshCommandOptString): Per the declaration, value is required to
be non-NULL. Honor new flag.
(opts_connect): Allow empty string connection.
At least protect the $uri variable against further expansion by properly
quoting it. While doing that, also quote all other variables to protect
against shell meta characters.
Signed-off-by: Philipp Hahn <hahn@univention.de>
Otherwise connection of hypervisor driver will be leaked when
one shutdown the guest in console. e.g.
[root@localhost]# init 0
......
init: Re-executing /sbin/init
Halting system...
Power down.
error: Failed to disconnect from the hypervisor, 1 leaked reference(s)
awk splits the line on consecutive spaces, which breaks getting the name
of a domain whose name contains spaces. Use sed instead to strip the
"Name:" prefix from the line
Signed-off-by: Philipp Hahn <hahn@univention.de>
This patch adds the new options (--live and --config) to "virsh setmem" command.
The behavior of above options is the same as that of "virsh setvcpus" and so on.
That is, when the --config option is specified, a modification is effective for
the persistent domain. Moreover we can modify the memory size of inactive domains
as well as that of active domains.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
as described at
http://wiki.debian.org/ToolChain/DSOLinkinghttps://fedoraproject.org/wiki/UnderstandingDSOLinkChange
otherwise the build fails on current Debian unstable with:
CCLD virsh
/usr/bin/ld: virsh-virsh.o: undefined reference to symbol 'xmlSaveTree@@LIBXML2_2.6.8'
/usr/bin/ld: note: 'xmlSaveTree@@LIBXML2_2.6.8' is defined in DSO //usr/lib/libxml2.so.2 so try adding it to the linker command line
//usr/lib/libxml2.so.2: could not read symbols: Invalid operation
This is needed to detect situations when optional argument was
specified with non-integer value: '--int-opt foo'. To keep functions
uniform vshCommandOptString function was also changed, because it
returns tri-state value as well. Given result pointer is updated only
in case of success. If parsing fails, result is not updated at all.
Not all applications have an existing event loop they need
to integrate with. Forcing them to implement the libvirt
event loop integration APIs is an undue burden. This just
exposes our simple poll() based implementation for apps
to use. So instead of calling
virEventRegister(....callbacks...)
The app would call
virEventRegisterDefaultImpl()
And then have a thread somewhere calling
static bool quit = false;
....
while (!quit)
virEventRunDefaultImpl()
* daemon/libvirtd.c, tools/console.c,
tools/virsh.c: Convert to public event loop APIs
* include/libvirt/libvirt.h.in, src/libvirt_private.syms: Add
virEventRegisterDefaultImpl and virEventRunDefaultImpl
* src/util/event.c: Implement virEventRegisterDefaultImpl
and virEventRunDefaultImpl using poll() event loop
* src/util/event_poll.c: Add full error reporting
* src/util/virterror.c, include/libvirt/virterror.h: Add
VIR_FROM_EVENTS
The event loop implementation is used by more than just the
daemon, so move it into the shared area.
* daemon/event.c, src/util/event_poll.c: Renamed
* daemon/event.h, src/util/event_poll.h: Renamed
* tools/Makefile.am, tools/console.c, tools/virsh.c: Update
to use new virEventPoll APIs
* daemon/mdns.c, daemon/mdns.c, daemon/Makefile.am: Update
to use new virEventPoll APIs
The daemon code calls virEventAddHandleImpl directly instead
of calling the wrapper virEventAddHandle.
* tools/console.c, daemon/libvirtd.c, daemon/mdns.c: Convert to
use primary event APIs
In a couple of commands virsh catches & ignores errors, but fails
to reset last_error. Thus the error is ignored, but still reported
to the user.
* tools/virsh.c: Reset last_error if ignoring an error
Alas, the shell is not a real programming language.
Patch generated by manual confirmation of vim's
s/[^"]\@<=\$\S\+\s\@=/"&"/gc
and
s/\(echo \)\@<=[^"].*\$.*$/"&"/c matches.
This patch generate a lot of noise and carries little benefits, as
I do not really expect $PKI to contain spaces or backticks. I'm just
fuming, and would not really mind if this patch is ignored
Right now, 'man libvirtd' includes information that depends on
configure results, so it must be generated on the fly and live
in $(builddir); however, requiring pod2man on all end user
machines is overkill. Meanwhile, 'man virsh' doesn't mention
any configure results, so it can be built at 'make dist' time.
If that situation changes in the future, we can generate virsh.1
in the same way that we generate libvirtd.8.
* daemon/Makefile.am (libvirtd.8.in): New rule, to run pod2man in
advance of distribution.
(libvirtd.8): Use only sed from tarball.
(EXTRA_DIST): Ship new file.
(libvirtd.pod): Delete unused rule.
(man8_MANS): Let automake know which section to use.
(CLEANFILES, MAINTAINERCLEANFILES): Adjust to new files.
* tools/Makefile.am (dist_man1_MANS): Distribute pre-built man
pages, fine since they don't require any substitution.
(virt-xml-validate.1, virt-pki-validate.1): Change input source.
(virsh.1): Build into srcdir.
(CLEANFILES, MAINTAINERCLEANFILES): Adjust to new build style.
* daemon/.gitignore: Update.
Reported by Diego Elio Pettenò.
Virsh freecell --all was not only getting wrong NUMA nodes count, but
even the NUMA nodes IDs. They doesn't have to be continuous, as I've
found out during testing this. Therefore a modification of
nodeGetCellsFreeMemory() error message.
Compilation on mingw was warning about %lld use in fprintf, and
in the gnulib strptime module about dead labels.
* tools/virsh.c (vshPrint): Change redirect.
(vshPrintExtra): Allow use within vshPrint. Avoid fprintf on
arbitrary formats, since we aren't using gnulib module; instead,
use virVasprintf to pre-format.
(vshError): Likewise.
* .gnulib: Update to latest, for mingw strptime warning fix.
Reported by Matthias Bolte.
Win32 doesn't have a concept of signal masks so disable that
code. It is unclear how SIGINT is delivered (if at all) on
Win32, so this might further work to provide an alternative
to pthread_sigmask
* tools/virsh.c: Avoid pthread_sigmask on Win32
Currently users who want to use virDomainQemuMonitorCommand() API or
it's virsh equivalent has to use the same protocol as libvirt uses for
communication to qemu. Since the protocol is QMP with current qemu and
HMP much more usable for humans, one ends up typing something like the
following:
virsh qemu-monitor-command DOM \
'{"execute":"human-monitor-command","arguments":{"command-line":"info kvm"}}'
which is not a very convenient way of debugging qemu.
This patch introduces --hmp option to qemu-monitor-command, which says
that the provided command is in HMP. If libvirt uses QMP to talk with
qemu, the command will automatically be converted into QMP. So the
example above is simplified to just
virsh qemu-monitor-command --hmp DOM "info kvm"
Also the result is converted from
{"return":"kvm support: enabled\r\n"}
to just plain HMP:
kvm support: enabled
If libvirt talks to qemu in HMP, --hmp flag is obviously a noop.
* src/fdstream.c (virFDStreamOpenFile, virFDStreamCreateFile):
Use VIR_FORCE_CLOSE instead of close.
* tests/commandtest.c (mymain): Likewise.
* tools/virsh.c (editFile): Use virCommand instead of system.
* src/util/util.c (__virExec): Special case preservation of std
file descriptors to child.
Use it in all places where a memory or storage request size is converted
to a larger granularity. This avoids requesting too small memory or storage
sizes that could result from the truncation done by a simple division.
This extends the round up fix in 6002e0406c
to the whole codebase.
Instead of reporting errors for odd values in the VMX code round them up.
Update the QEMU Argv tests accordingly as the original memory size 219200
isn't a even multiple of 1024 and is rounded up to 215 megabyte now. Change
it to 219100 and 219136. Use two different values intentionally to make
sure that rounding up works.
Update virsh.pod accordingly, as rounding down and rejecting are replaced
by rounding up.
If the memory of guest OS is changed constantly, the live migration
can not be ended ever for ever.
We can use the command 'virsh migrate-setmaxdowntime' to control the
live migration. But the value of maxdowntime is diffcult to calculate
because it depends on the transfer speed of network and constantly
changing memroy size. We need a easy way to control the live migration.
This patch adds the support of forcing guest to suspend at timeout.
With this patch, when we migrate the guest OS, we can specify a
timeout. If the live migration timeouts, auto-suspend the guest OS,
where the migration will complete offline.
While migration is in progress and virsh is waiting for its
completion, user may want to terminate the progress by pressing
Ctrl-C. But virsh just exits on user's Ctrl-C leaving migration
in background that user isn't even aware of. It's not reasonable.
This patch changes the behaviour for migration. For other
commands Ctrl-C still terminates virsh itself.
