External checkpoints could be created with snapshot-create, but
without libvirt supplying a default name for the memory file,
it is essential to add a new argument to snapshot-create-as to
allow the user to choose the memory file name. This adds the
option --memspec [file=]name[,snapshot=type], where type can
be none, internal, or external. For an example,
virsh snapshot-create-as $dom --memspec /path/to/file
is the shortest possible command line for creating an external
checkpoint, named after the current timestamp.
* tools/virsh-snapshot.c (vshParseSnapshotMemspec): New function.
(cmdSnapshotCreateAs): Use it.
* tests/virsh-optparse (test_url): Test it.
* tools/virsh.pod (snapshot-create-as): Document it.
So far, none of the existing callers of vshStringToArray expected
the user to ever pass a literal comma; meanwhile, snapshot parsing
had rolled its own array parser. Moving the comma escaping into
the common function won't affect any existing callers, and will make
this function reusable for adding memory handling to snapshot parsing.
As a bonus, the testsuite was already testing snapshot parsing, so
the fact that the test still passes means that we are now giving
testsuite exposure to vshStringToArray.
* tools/virsh-snapshot.c (vshParseSnapshotDiskspec): Move ,,
parsing...
* tools/virsh.c (vshStringToArray): ...into common function.
Also, vshStrdup can't fail.
Make it clear that the alternate terms have no difference except
for length of time they were supported.
* tools/virsh.pod (start, shutdown, reboot): More documentation.
https://bugzilla.redhat.com/show_bug.cgi?id=873344 suggested that
the grouping 'boot', 'shutdown', 'reboot'; as well as the grouping
'start', 'stop', 'restart'; might be easier to remember than the
current mix of 'start', 'shutdown', 'reboot'.
Also, touch up the wording of 'reboot' to be more accurate.
* tools/virsh-domain.c (domManagementCmds): Add other command names.
* tools/virsh.pod (start, shutdown, reboot): Document the aliases.
The default behavior while creating external checkpoints is to pause the
guest while the memory state is captured. We want the users to sacrifice
space saving for creating the memory save image while the guest is live
to minimize downtime.
This patch adds a flag that causes the guest not to be paused before
taking the snapshot.
*include/libvirt/libvirt.h.in:
- add new paused reason: VIR_DOMAIN_PAUSED_SNAPSHOT
- add new flag for taking snapshot: VIR_DOMAIN_SNAPSHOT_CREATE_LIVE
*tools/virsh-domain-monitor.c:
- add string representation for VIR_DOMAIN_PAUSED_SNAPSHOT
*tools/virsh-snapshot.c:
- add support for VIR_DOMAIN_SNAPSHOT_CREATE_LIVE
*tools/virsh.pod:
- add docs for --live option added to use
VIR_DOMAIN_SNAPSHOT_CREATE_LIVE flag
The libvirt coding standard is to use 'function(...args...)'
instead of 'function (...args...)'. A non-trivial number of
places did not follow this rule and are fixed in this patch.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=871756
Commit cd1e8d1 assumed that systems new enough to have journald
also have mkostemp; but this is not true for uclibc.
For that matter, use of mkstemp[s] is unsafe in a multi-threaded
program. We should prefer mkostemp[s] in the first place.
* bootstrap.conf (gnulib_modules): Add mkostemp, mkostemps; drop
mkstemp and mkstemps.
* cfg.mk (sc_prohibit_mkstemp): New syntax check.
* tools/virsh.c (vshEditWriteToTempFile): Adjust caller.
* src/qemu/qemu_driver.c (qemuDomainScreenshot)
(qemudDomainMemoryPeek): Likewise.
* src/secret/secret_driver.c (replaceFile): Likewise.
* src/vbox/vbox_tmpl.c (vboxDomainScreenshot): Likewise.
This resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=862515
which describes inconsistencies in dealing with duplicate mac
addresses on network devices in a domain.
(at any rate, it resolves *almost* everything, and prints out an
informative error message for the one problem that isn't solved, but
has a workaround.)
A synopsis of the problems:
1) you can't do a persistent attach-interface of a device with a mac
address that matches an existing device.
2) you *can* do a live attach-interface of such a device.
3) you *can* directly edit a domain and put in two devices with
matching mac addresses.
4) When running virsh detach-device (live or config), only MAC address
is checked when matching the device to remove, so the first device
with the desired mac address will be removed. This isn't always the
one that's wanted.
5) when running virsh detach-interface (live or config), the only two
items that can be specified to match against are mac address and model
type (virtio, etc) - if multiple netdevs match both of those
attributes, it again just finds the first one added and assumes that
is the only match.
Since it is completely valid to have multiple network devices with the
same MAC address (although it can cause problems in many cases, there
*are* valid use cases), what is needed is:
1) remove the restriction that prohibits doing a persistent add of a
netdev with a duplicate mac address.
2) enhance the backend of virDomainDetachDeviceFlags to check for
something that *is* guaranteed unique (but still work with just mac
address, as long as it yields only a single results.
This patch does three things:
1) removes the check for duplicate mac address during a persistent
netdev attach.
2) unifies the searching for both live and config detach of netdevices
in the subordinate functions of qemuDomainModifyDeviceFlags() to use the
new function virDomainNetFindIdx (which matches mac address and PCI
address if available, checking for duplicates if only mac address was
specified). This function returns -2 if multiple matches are found,
allowing the callers to print out an appropriate message.
Steps 1 & 2 are enough to fully fix the problem when using virsh
attach-device and detach-device (which require an XML description of
the device rather than a bunch of commandline args)
3) modifies the virsh detach-interface command to check for multiple
matches of mac address and show an error message suggesting use of the
detach-device command in cases where there are multiple matching mac
addresses.
Later we should decide how we want to input a PCI address on the virsh
commandline, and enhance detach-interface to take a --address option,
eliminating the need to use detach-device
* src/conf/domain_conf.c
* src/conf/domain_conf.h
* src/libvirt_private.syms
* added new virDomainNetFindIdx function
* removed now unused virDomainNetIndexByMac and
virDomainNetRemoveByMac
* src/qemu/qemu_driver.c
* remove check for duplicate max from qemuDomainAttachDeviceConfig
* use virDomainNetFindIdx/virDomainNetRemove instead
of virDomainNetRemoveByMac in qemuDomainDetachDeviceConfig
* use virDomainNetFindIdx instead of virDomainIndexByMac
in qemuDomainUpdateDeviceConfig
* src/qemu/qemu_hotplug.c
* use virDomainNetFindIdx instead of a homespun loop in
qemuDomainDetachNetDevice.
* tools/virsh-domain.c: modified detach-interface command as described
above
Patch 61299a1c fixed a long-standing pod error in the man page.
But we should be preventing these up front.
See also https://bugzilla.redhat.com/show_bug.cgi?id=870273
* tools/Makefile.am (virt-xml-validate.1, virt-pki-validate.1)
(virt-host-validate.1, virt-sanlock-cleanup.8, virsh.1): Reject
pod conversion errors.
* daemon/Makefile.am ($(srcdir)/libvirtd.8.in): Likewise.
We always expose individual bits from flags as separate options rather
than exposing a raw flags options. Since virNodeSuspendForDuration does
not currently support any flags, the only way of using this --flags
options that would not fail is "--flags 0", which is equivalent to
omitting the option. Thus it is highly unlikely anyone would actually be
using it and removing it should be safe.
https://bugzilla.redhat.com/show_bug.cgi?id=869100 mentioned some
confusion about 'virsh snapshot-list' errors. Clean up a
misleading error message, and add some documentation.
* tools/virsh-snapshot.c (cmdSnapshotList): Mention --current
rather than --from when appropriate.
* tools/virsh.pod (snapshot-list): Mention that the named starting
point is NOT part of the list except under --tree.
Upstream kernel introduced new sysfs knob "merge_across_nodes" to
specify if pages from different numa nodes can be merged. When set
to 0, only pages which physically reside in the memory area of
same NUMA node can be merged. When set to 1, pages from all nodes
can be merged.
This patch supports the tuning by adding new param field
"shm_merge_across_nodes".
Using VIR_DOMAIN_XML_MIGRATABLE flag, one can request domain's XML
configuration that is suitable for migration or save/restore. Such XML
may contain extra run-time stuff internal to libvirt and some default
configuration may be removed for better compatibility of the XML with
older libvirt releases.
This flag may serve as an easy way to get the XML that can be passed
(after desired modifications) to APIs that accept custom XMLs, such as
virDomainMigrate{,ToURI}2 or virDomainSaveFlags.
Add a read-only udev based backend for virInterface. Useful for distros
that do not have netcf support yet. Multiple libvirt based utilities use
a HAL based fallback when virInterface is not available which is less
than ideal. This implements:
* virConnectNumOfInterfaces()
* virConnectListInterfaces()
* virConnectNumOfDefinedInterfaces()
* virConnectListDefinedInterfaces()
* virConnectListAllInterfaces()
* virConnectInterfaceLookupByName()
* virConnectInterfaceLookupByMACString()
I was using qemu-monitor-command during development, and found it quite
hard to use. Compare the results of this patch on ease of reading:
$ virsh qemu-monitor-command dom '{"execute":"query-version"}'
{"return":{"qemu":{"micro":1,"minor":12,"major":0},"package":"(qemu-kvm-0.12.1.2)"},"id":"libvirt-7683"}
$ virsh qemu-monitor-command --pretty dom '{"execute":"query-version"}'
{
"return": {
"qemu": {
"micro": 1,
"minor": 12,
"major": 0
},
"package": "(qemu-kvm-0.12.1.2)"
},
"id": "libvirt-7674"
}
* tools/virsh-host.c (cmdQemuMonitorCommand): New option.
* tools/virsh.pod (qemu-monitor-command): Document it.
This command uses the new virNetworkUpdate() API to modify an existing
network definition, and optionally have those modifications take
effect immediately without restarting the network.
An example usage:
virsh net-update mynet add-last ip-dhcp-host \
"<host mac='00:11:22:33:44:55' ip='192.168.122.45'/>" \
--live --config
If you like, you can instead put the xml into a file, and call like
this:
virsh net-update mynet add ip-dhcp-host /tmp/myxml.xml
--live --config
virsh will autodetect whether the argument is itself an xml element,
or if it's a file, by looking at the first character - the first
character of an xml element is always "<", and the first character of
a file is almost always *not* "<" (in the rare case that it is, the
user could specify "./<filename...").
A --parent-index option is also available (to give the index within a
list of parent objects, e.g. the index of the parent <ip> element when
updating ip-dhcp-host elements), but is optional and at least for now
will probably be used rarely.
--live, --config, and --current options - if you specify --live, only
the live state of the network will be updated. If you also specify
--config, then the persistent configuration will also be updated;
these two commands can be given separately, or both together. If you
don't specify either (you can optionally specify "--current" for the
same effect), then the "current" config will be updated (i.e. if the
network is active, then only its live config is affected, but if the
network is inactive, only the persistent config is affected).
https://www.gnu.org/licenses/gpl-howto.html recommends that
the 'If not, see <url>.' phrase be a separate sentence.
* tests/securityselinuxhelper.c: Remove doubled line.
* tests/securityselinuxtest.c: Likewise.
* globally: s/; If/. If/
Based exclusively on work by Eric Blake in a patch posted with the same
subject. However some modifications related to comments and my plans to
add another backend.
Added WITH_INTERFACE as the only automake variable deciding whether to
build the driver and using WITH_NETCF to identify that we're wanting to
use the netcf library as the backend.
* configure.ac: Added with_interface
* src/interface/netcf_driver.c: Renamed..
* src/interface/interface_backend_netcf.c: ..to this to match storage.
* src/interface/netcf_driver.h: Renamed..
* src/interface/interface_driver.h: ..to this.
* daemon/Makefile.am: Respect WITH_INTERFACE and WITH_NETCF.
* libvirt.spec.in: Add RPM support for --with-interface
The new command 'virsh blockcommit $dom $disk' requests the start
of an asynchronous commit operation across the entire chain of
$disk. Further arguments can fine-tune which portion of the
chain is committed. Existing 'virsh blockjob' commands can then
track the status, change the bandwidth, or abort the commit job.
With a bit more on the command line, 'virsh blockcommit $dom $disk
--wait --verbose' can be used for blocking behavior, with visual
feedback on the overall status, and can be canceled with Ctrl-C.
The overall design, including the wait loop logic, borrows heavily
from the existing blockpull command.
* tools/virsh-domain.c (cmdBlockCommit): New function.
* tools/virsh.pod (blockcommit): Document it.
New command node-memory-tune to get/set the node memory parameters,
only two parameters are allowed to set (pages_to_scan, and sleep_millisecs,
see documents in this patch for more details).
Example of node-memory-tune's output:
Shared memory:
pages_to_scan 100
sleep_millisecs 20
pages_shared 0
pages_sharing 0
pages_unshared 0
pages_volatile 0
full_scans 0
This introduces four new options for secret-list, to filter the
returned secrets by whether it's ephemeral or not, and/or by
whether it's private or not.
* tools/virsh-secret.c: (New helper vshSecretSorter,
vshSecretListFree, and vshCollectSecretList; Use the new
API for secret-list; error out if flags are specified,
because there is no way to filter the results when using
old APIs (no APIs to get the properties (ephemeral, private)
of a secret yet).
* tools/virsh.pod: Document the 4 new options.
tools/virsh-nwfilter.c:
* vshNWFilterSorter to sort network filters by name
* vshNWFilterListFree to free the network filter objects list.
* vshNWFilterListCollect to collect the network filter objects, trying
to use new API first, fall back to older APIs if it's not supported.
tools/virsh-nodedev.c:
* vshNodeDeviceSorter to sort node devices by name
* vshNodeDeviceListFree to free the node device objects list.
* vshNodeDeviceListCollect to collect the node device objects, trying
to use new API first, fall back to older APIs if it's not supported.
* Change option --cap to accept multiple capability types.
tools/virsh.pod
* Update document for --cap
This improve helper vshStringToArray to accept const string as
argument instead. To not convert the const string when using
vshStringToArray, and thus avoid motifying it.
I got an off-list report about a bad diagnostic:
Target network card mac 52:54:00:49:07:ccdoes not match source 52:54:00:49:07:b8
True to form, I've added a syntax check rule to prevent it
from recurring, and found several other offenders.
* cfg.mk (sc_require_whitespace_in_translation): New rule.
* src/conf/domain_conf.c (virDomainNetDefCheckABIStability): Add
space.
* src/esx/esx_util.c (esxUtil_ParseUri): Likewise.
* src/qemu/qemu_command.c (qemuCollectPCIAddress): Likewise.
* src/qemu/qemu_driver.c (qemuDomainSetMetadata)
(qemuDomainGetMetadata): Likewise.
* src/qemu/qemu_hotplug.c (qemuDomainChangeNetBridge): Likewise.
* src/rpc/virnettlscontext.c
(virNetTLSContextCheckCertDNWhitelist): Likewise.
* src/vmware/vmware_driver.c (vmwareDomainResume): Likewise.
* src/vbox/vbox_tmpl.c (vboxDomainGetXMLDesc, vboxAttachDrives):
Avoid false negatives.
* tools/virsh-domain.c (info_save_image_dumpxml): Reword.
Based on a report by Luwen Su.
tools/virsh-interface.c:
* vshInterfaceSorter to sort interfaces by name
* vshInterfaceListFree to free the interface objects list.
* vshInterfaceListCollect to collect the interface objects, trying
to use new API first, fall back to older APIs if it's not supported.
tools/virsh-network.c:
* vshNetworkSorter to sort networks by name
* vshNetworkListFree to free the network objects list.
* vshNetworkListCollect to collect the network objects, trying
to use new API first, fall back to older APIs if it's not supported.
* New options --persistent, --transient, --autostart, --no-autostart,
for net-list, and new field 'Persistent' for its output.
tools/virsh.pod:
* Add documents for the new options.
tools/virsh-volume.c:
* vshStorageVolSorter to sort storage vols by name
* vshStorageVolumeListFree to free the volume objects list
* vshStorageVolumeListCollect to collect the volume objects, trying
to use new API first, fall back to older APIs if it's not supported.
When setting the cpu tunables in virsh you are able to update only a
subset of them. Virsh while doing the update updated all of the
tunables, changed ones with new values and unchanged with old ones.
This is unfortunate as it:
a) might overwrite some other change by a race condition (unprobable)
b) fails with range checking as some of the old values saved might be
out of range
This patch changes the update procedure so that only the changed value
is updated on the host.
This patch also fixes a very unprobable memory leak if the daemon would
return a string tunable parameter, as the typed parameter array was not
cleared.
A last minute rename in commit fc122e1a to virsh.h was not properly
reflected when rebasing virsh-pool.c in commit 93a346d.
* tools/virsh-pool.c (vshStoragePoolListCollect): Use VSH_MATCH,
not MATCH.
tools/virsh-pool.c:
* vshStoragePoolSorter to sort the pool list by pool name.
* struct vshStoragePoolList to present the pool list, pool info
is collected by list->poolinfo if 'details' is specified by
user.
* vshStoragePoolListFree to free the pool list
* vshStoragePoolListCollect to collect the pool list, new API
virStorageListAllPools is tried first, if it's not supported,
fall back to older APIs.
* New options --persistent, --transient, --autostart, --no-autostart
and --type for pool-list. --persistent or --transient is to filter
the returned pool list by whether the pool is persistent or not.
--autostart or --no-autostart is to filter the returned pool list
by whether the pool is autostarting or not. --type is to filter
the pools by pool types. E.g.
% virsh pool-list --all --persistent --type dir,disk
tools/virsh.pod:
* Add documentations for the new options.
