Commit Graph

8328 Commits

Author SHA1 Message Date
Guido Günther
dca1a6b46f xen_xs: Guard against set but empty kernel argument
On xen 4.1 I observed configurations that look like:

(image
    (hvm
        (kernel '')
        (loader '/foo/bar')
))

The kernel element is there but unset. This leads to an empty <kernel/>
element in the XML and even worse makes us skip the boot order parsing
and therefore not emit a <boot device='$dev>'/> element which breaks CD
booting.
2011-10-10 22:58:04 +02:00
Guido Günther
c5d2984c42 xen: add error handling to UUID parsing
otherwise a missing UUID in a domain config just shows:

error: An error occurred, but the cause is unknown

Now we have:

error: configuration file syntax error: config value uuid was missing
2011-10-10 22:57:41 +02:00
Eric Blake
dbbe16c26e maint: typo fixes
I noticed a couple typos in recent commits, and fixed the remaining
instances of them.

* docs/internals/command.html.in: Fix spelling errors.
* include/libvirt/libvirt.h.in (virConnectDomainEventCallback):
Likewise.
* python/libvirt-override.py (virEventAddHandle): Likewise.
* src/lxc/lxc_container.c (lxcContainerChild): Likewise.
* src/util/hash.c (virHashCreateFull): Likewise.
* src/storage/storage_backend_logical.c
(virStorageBackendLogicalMakeVol): Likewise.
* src/esx/esx_driver.c (esxFormatVMXFileName): Likewise.
* src/vbox/vbox_tmpl.c (vboxIIDIsEqual_v3_x): Likewise.
2011-10-10 14:02:06 -06:00
Eric Blake
bab4f31c78 snapshot: avoid accidental renames with snapshot-edit
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.
2011-10-10 11:56:05 -06:00
Eric Blake
40baa1c899 snapshot: sort snapshot-list --tree
Otherwise, the results are not repeatable.

* tools/virsh.c (cmdSnapshotList): Print tree in predictable order.
2011-10-10 11:12:43 -06:00
Osier Yang
82c1740ab9 storage: Do not use comma as seperator for lvs output
* src/storage/storage_backend_logical.c:

If a logical vol is created as striped. (e.g. --stripes 3),
the "device" field of lvs output will have multiple fileds which are
seperated by comma. Thus the RE we write in the codes will not
work well anymore. E.g. (lvs output for a stripped vol, uses "#" as
seperator here):

test_stripes##fSLSZH-zAS2-yAIb-n4mV-Al9u-HA3V-oo9K1B#\
/dev/sdc1(10240),/dev/sdd1(0)#42949672960#4194304

The RE we use:

    const char *regexes[] = {
        "^\\s*(\\S+),(\\S*),(\\S+),(\\S+)\\((\\S+)\\),(\\S+),([0-9]+),?\\s*$"
    };

Also the RE doesn't match the "devices" field of striped vol properly,
it contains multiple "device path" and "offset".

This patch mainly does:
    1) Change the seperator into "#"
    2) Change the RE for "devices" field from "(\\S+)\\((\\S+)\\)"
       into "(\\S+)".
    3) Add two new options for lvs command, (segtype, stripes)
    4) Extend the RE to match the value for the two new fields.
    5) Parse the "devices" field seperately in virStorageBackendLogicalMakeVol,
       multiple "extents" info are generated if the vol is striped. The
       number of "extents" is equal to the stripes number of the striped vol.

A incidental fix: (virStorageBackendLogicalMakeVol)
    Free "vol" if it's new created and there is error.

Demo on striped vol with the patch applied:

% virsh vol-dumpxml /dev/test_vg/vol_striped2
<volume>
  <name>vol_striped2</name>
  <key>QuWqmn-kIkZ-IATt-67rc-OWEP-1PHX-Cl2ICs</key>
  <source>
    <device path='/dev/sda5'>
      <extent start='79691776' end='88080384'/>
    </device>
    <device path='/dev/sda6'>
      <extent start='62914560' end='71303168'/>
    </device>
  </source>
  <capacity>8388608</capacity>
  <allocation>8388608</allocation>
  <target>
    <path>/dev/test_vg/vol_striped2</path>
    <permissions>
      <mode>0660</mode>
      <owner>0</owner>
      <group>6</group>
      <label>system_u:object_r:fixed_disk_device_t:s0</label>
    </permissions>
  </target>
</volume>

RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=727474
2011-10-10 20:34:59 +08:00
Michal Privoznik
cd016a46c7 qemuDomainAttach: Initialize pidfile variable
If parsing qemu command line fails (e.g. because of non-existing
process number supplied), we jump to cleanup label where we free
pidfile. Therefore it needs to be initialized. Otherwise we free
random pointer.
2011-10-09 10:42:42 +02:00
Eric Blake
0654d274e6 qemu: silence Coverity false positive
Coverity complained that 4 out of 5 callers to virJSONValueObjectGetBoolean
checked for errors.  But we documented that we don't care in this case.

* src/qemu/qemu_monitor_json.c (qemuMonitorJSONGetBlockInfo): Use
ignore_value.
2011-10-07 21:00:05 -06:00
Eric Blake
2e593ba518 lxc: fix logic bug
Detected by Coverity.  We want to increment the size_t counter,
not the pointer to the counter.  Bug present since 5f5c6fde (0.9.5).

* src/lxc/lxc_controller.c (lxcSetupLoopDevices): Use correct
precedence.
2011-10-07 20:49:12 -06:00
tangchen
d5c4067d7b virsh: Update the help information for undefine command.
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>
2011-10-07 09:55:30 -06:00
Daniel P. Berrange
696becb658 Don't send back unknown program errors for async messages
If we send back an unknown program error for async messages,
we will confuse the client because they only expect replies
for method calls. Just log & drop any invalid async messages

* src/rpc/virnetserver.c: Don't send error for async messages
2011-10-07 16:53:36 +01:00
Daniel P. Berrange
f399612c56 Fix deadlock when the RPC program is unknown
Commit 597fe3cee6 accidentally
introduced a deadlock when reporting an unknown RPC program.
The virNetServerDispatchNewMessage method is called with
the client locked, and must therefore not attempt to send
any RPC messages back to the client. Only once the incoming
message is passed off to the virNetServerHandleJob worker
is it safe to start sending messages back

* src/rpc/virnetserver.c: Delay checking for unknown RPC
  program until in worker thread
2011-10-07 16:53:30 +01:00
Eric Blake
fd52b968b5 snapshot: simplify redefinition of disk snapshot
Redefining disk-only snapshot xml should work even if the user
did not explicitly pass VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY;
the flag is only required for conditions where the <state>
subelement is not already present in parsing (that is, defining
a new snapshot).

Also, fix the error code of some user-visible errors (the remaining
VIR_ERR_INTERNAL_ERROR should not be user-visible, since parsing
of <active> is only done from internal code).

* src/conf/domain_conf.c (virDomainSnapshotDefParseString): Allow
disks during redefinition of disk snapshot.
2011-10-07 08:29:59 -06:00
Eric Blake
731f9a5e56 snapshot: let virsh edit disk snapshots
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.
2011-10-07 08:29:50 -06:00
Eric Blake
203b361f09 snapshot: fix virsh error message typo
* tools/virsh.c (cmdSnapshotList): Spell exclusive correctly.
2011-10-07 07:53:27 -06:00
Michal Privoznik
811886672d remote_driver: Avoid double free in EventControl building
Don't xdr_free event data as they are freed by our caller
virNetClientProgramDispatch.
2011-10-07 09:56:32 +02:00
Eric Blake
2d45ae5a01 build: fix 'make distcheck' with pdwtags installed
I am getting this failure with 'make distcheck':

  GEN    ../../src/remote_protocol-structs
/bin/sh: ../../src/remote_protocol-structs-t: Permission denied
make[4]: *** [../../src/remote_protocol-structs] Error 1

since it attempts a sub-run of a VPATH 'make check' where $(srcdir)
is intentionally read-only.  I'm not sure which commit introduced
the problem, although I suspect it was around 62dee6f when I
refactored protocol struct checking to be more powerful.

$(@F) is required by POSIX, and although it is not yet portable
to all make implementations, we already require GNU make.

* src/Makefile.am (PDWTAGS): Generate temp file into current
directory, since $(srcdir) is read-only during distcheck.
2011-10-06 18:59:02 -06:00
Guido Günther
6dd8532d96 xenParseXM: don't dereference NULL pointer when script is empty 2011-10-06 21:04:54 +02:00
Laine Stump
4bb4109f7b qemu: add separate rerror_policy for disk errors
Previously libvirt's disk device XML only had a single attribute,
error_policy, to control both read and write error policy, but qemu
has separate options for controlling read and write. In one case
(enospc) a policy is allowed for write errors but not read errors.

This patch adds a separate attribute that sets only the read error
policy. If just error_policy is set, it will apply to both read and
write error policy (previous behavior), but if the new rerror_policy
attribute is set, it will override error_policy for read errors only.
Possible values for rerror_policy are "stop", "report", and "ignore"
("report" is the qemu-controlled default for rerror_policy when
error_policy isn't specified).

For consistency, the value "report" has been added to the possible
values for error_policy as well.
2011-10-06 14:49:23 -04:00
Laine Stump
91195b4321 qemu: leave rerror policy at default when enospace is requested
commit 12062ab set rerror=ignore when error_policy="enospace" was
selected (since the rerror option in qemu doesn't accept "enospc", as
the werror option does).

After that patch was already pushed, Paolo Bonzini noticed it and
commented that leaving rerror at the default ("report") would be a
better choice. This patch corrects the problem - if error_policy =
"enospace" is given, rerror is left off the qemu commandline,
effectively setting it to "report". For other values, rerror is still
set to match werror.

Additionally, the parsing of error_policy was changed to no longer
erroneously allow "default" as a choice - as with most other
attributes, if you want the default setting, just don't specify an
error_policy.

Finally, two ommissions in the first patch were corrected - a
long-dormant qemuxml2argv test for enospace was enabled, and fixed to
pass, and the argv2xml parser in qemu_command.c was updated to
recognize the different spelling on the qemu commandline.
2011-10-06 14:49:13 -04:00
Eric Blake
8644a379d7 qemu: enable multifunction for older qemu
Now that RHEL 6.2 Beta is out, it would be nice to test multifunction
devices on that platform.  This changes things so that the multifunction
cap bit can be set in two different ways: by version comparison (needed
for qemu 0.13 which lacked a -device query), and by -device query
(provided by qemu.git and backported to the RHEL beta build of
qemu-kvm which still claims to be a modified 0.12, and therefore needed
for RHEL).

* src/qemu/qemu_capabilities.c (qemuCapsParseDeviceStr): Allow
second method of setting multifunction cap bit.
* tests/qemuhelptest.c (mymain): Test it.
* tests/qemuhelpdata/qemu-kvm-0.12.1.2-rhel62-beta: New file.
* tests/qemuhelpdata/qemu-kvm-0.12.1.2-rhel62-beta-device: Likewise.
2011-10-06 10:41:21 -06:00
Guido Günther
3addd15195 Document STREQ_NULLABLE and STRNEQ_NULLABLE 2011-10-06 16:50:38 +02:00
Daniel P. Berrange
b59bb93129 Make LXC work with new network configuration types
If using one of the new non-NAT/routed virtual network
configurations, the LXC driver would not know how to
setup the VETH devices. Adding in calls to setup the
"actual" network configuration at VM startup and cleanup
when shutting down fixes this.

* src/lxc/lxc_driver.c: Setup/cleanup actual net devs
2011-10-06 10:20:01 +01:00
Eric Blake
5298551e07 init: raise default system aio limits
https://bugzilla.redhat.com/show_bug.cgi?id=740899 documents that
if qemu uses aio=native for its disks, then it consumes 128 aio
requests per disk.  On a host with multiple guests, this can quickly
run out of kernel aio requests with the default aio-max-nr of
65536.  Kernel developers have confirmed that there is no up-front
cost to raising this limit (a larger limit merely implies that more
aio requests can be issued in parallel, which in turn will result
in more kernel memory allocation, only if the system really does use
that many requests).  Since the system default limit prevents 256
disks, which is well within libvirt's current scalability, this
patch installs a file to raise the limit and document it in case a
system administrator has further cause to tune the limit.  The
install only works on platforms new enough to source /etc/sysctl.d/*
alongside /etc/sysctl.conf (F14 and RHEL 6).

* daemon/libvirtd.sysctl: New file.
* daemon/Makefile.am (EXTRA_DIST): Ship it.
(install-init, uninstall-init): Install it.
* libvirt.spec.in (%files): Include it in rpm.
2011-10-05 14:49:35 -06:00
Eric Blake
892719f657 maint: fix minor issues in virterror public header
Consistent use of tabs, fewer long lines, and a typo fix.

* include/libvirt/virterror.h: Fix typos, layout.
2011-10-05 12:33:59 -06:00
Eric Blake
29879b550b snapshot: enforce REVERT_FORCE on qemu
Implements the documentation for snapshot revert vs. force.

Part of the patch tightens existing behavior (previously, reverting
to an old snapshot without <domain> was blindly attempted, now it
requires force), while part of it relaxes behavior (previously, it
was not possible to revert an active domain to an ABI-incompatible
active snapshot, now force allows this transition).

* src/qemu/qemu_driver.c (qemuDomainRevertToSnapshot): Check for
risky situations, and allow force to get past them.
2011-10-05 11:33:39 -06:00
Eric Blake
70e015e12f snapshot: use qemu-img on disks in use at time of snapshot
Once we know which set of disks belong to a snapshot, reverting or
deleting that snapshot should visit just those disks, rather than
also visiting disks that were hot-plugged in the meantime or
skipping disks that were hot-unplugged in the meantime.

* src/qemu/qemu_domain.c (qemuDomainSnapshotForEachQcow2): Use
snapshot domain details when available.  Avoid NULL deref.
2011-10-05 11:33:39 -06:00
Eric Blake
3c797404a5 snapshot: add REVERT_FORCE to API
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.
2011-10-05 11:33:36 -06:00
Eric Blake
869b69ea3d snapshot: implement snapshot roots listing in vbox
Commit 9f5e53e introduced the ability to filter snapshots to
just roots, but it was never implemented for VBox until now.

The VBox implementation prohibits deletion of a snapshot with
multiple children.  Hence, there can only be at most one root,
which is found by searching for the snapshot with a NULL uuid.

Prior to 4.0, snapshotGet looked up by UUID, and snapshotFind
looked up by name; after that point, snapshotGet disappeared
and snapshotFind handles uuid or name.

* src/vbox/vbox_tmpl.c (vboxDomainSnapshotNum)
(vboxDomainSnapshotListNames): Implement limiting list to root.
2011-10-05 08:57:58 -06:00
Jiri Denemark
fcd2bd55d7 qemu: Don't fail virDomainGetInfo if we can't update balloon info
Qemu driver tries to update balloon data in virDomainGetInfo and if it
can't do so because there is another monitor job running, it just
reports what's known in domain def. However, if there was no job running
but getting the data from qemu fails, we would fail the whole API. This
doesn't make sense. Let's make the failure nonfatal.
2011-10-05 16:41:48 +02:00
Eric Blake
f045583372 snapshot: simplify esx snapshot name lookup
No need to request the parent of a snapshot if we aren't going to use it.

* src/esx/esx_vi.c (esxVI_GetSnapshotTreeByName): Make parent
optional.
* src/esx/esx_driver.c (esxDomainSnapshotCreateXML)
(esxDomainSnapshotLookupByName, esxDomainRevertToSnapshot)
(esxDomainSnapshotDelete): Simplify accordingly.
2011-10-05 08:24:34 -06:00
Eric Blake
827a992a13 snapshot: implement snapshot roots listing in esx
Commit 9f5e53e introduced the ability to filter snapshots to
just roots, but it was never implemented for ESX until now.

* src/esx/esx_vi.h (esxVI_GetNumberOfSnapshotTrees)
(esxVI_GetSnapshotTreeNames): Add parameter.
* src/esx/esx_vi.c (esxVI_GetNumberOfSnapshotTrees)
(esxVI_GetSnapshotTreeNames): Allow choice of recursion or not.
* src/esx/esx_driver.c (esxDomainSnapshotNum)
(esxDomainSnapshotListNames): Use it to limit to roots.
2011-10-05 08:16:15 -06:00
Laine Stump
12062abb89 qemu: correct misspelled 'enospc' option, and only use for werror
This resolves:

     https://bugzilla.redhat.com/show_bug.cgi?id=730909

When support for setting the qemu disk error policy to "enospc" was
added, it was inadvertently spelled "enospace". This patch corrects
that on the qemu commandline (while retaining the "enospace" spelling
for libvirt's XML).

Also, while examining the qemu source, I found that "enospc" is not
allowed for the read error policy, only for write error policy (makes
sense). Since libvirt currently only has a single error policy
setting, when "enospace" is selected, the read error policy is set to
"ignore".
2011-10-04 23:09:25 -04:00
Eric Blake
64703c03fc snapshot: better virsh handling of missing current, parent
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.
2011-10-04 14:36:24 -06:00
Guido Günther
ae37001d78 Document that ff callbacks need to be invoked from a clean stack.
Also fix a typo.
2011-10-04 20:29:46 +02:00
Jiri Denemark
cdd5ef7b07 qemu: Fix migration with dname
Destination libvirtd remembers the original name in the prepare phase
and clears it in the finish phase. The original name is used when
comparing domain name in migration cookie.
2011-10-04 15:43:14 +02:00
Daniel P. Berrange
652f887144 Allow passing of command line args to LXC container
When booting a virtual machine with a kernel/initrd it is possible
to pass command line arguments using the <cmdline>...args...</cmdline>
element in the guest XML. These appear to the kernel / init process
in /proc/cmdline.

When booting a container we do not have a custom /proc/cmdline,
but we can easily set an environment variable for it. Ideally
we could pass individual arguments to the init process as a
regular set of 'char *argv[]' parameters, but that would involve
libvirt parsing the <cmdline> XML text. This can easily be added
later, even if we add the env variable now

* docs/drvlxc.html.in: Document env variables passed to LXC
* src/conf/domain_conf.c: Add <cmdline> to be parsed for
  guests of type='exe'
* src/lxc/lxc_container.c: Set LIBVIRT_LXC_CMDLINE env var
2011-10-04 14:15:09 +01:00
Daniel P. Berrange
6cc9ee9b18 Add support for bandwidth filtering on LXC guests
Call virBandwidthEnable after creating the LXC veth, so that any
bandwidth controls get applied

* src/lxc/lxc_driver.c: Enable bandwidth limiting
2011-10-04 14:15:09 +01:00
Laine Stump
6c9e2eb23b network: fill in bandwidth from portgroup for all forward modes
This patch is a fix for:

  https://bugzilla.redhat.com/show_bug.cgi?id=743176

which was discovered by Dan Berrange while making bandwidth
configuration work for LXC guests.

Background: Although virtportprofile data from a network portgroup is
only applicable for direct mode interfaces, the code that copies
bandwidth data from the portgroup was also only being executed in the
case of direct mode interfaces. The result was that interfaces using
traditional virtual networks (forward mode='nat|route|none'), and
those using a host bridge for forwarding, would not pick up bandwidth
data from a portgroup defined in the network.

This patch moves that code outside the conditional, so that bandwidth
information is *alway* copied from the appropriate portgroup (unless
the <interface> definition itself already has bandwidth information,
which would take precedence over what's in the portgroup anyway).
2011-10-04 09:13:18 -04:00
Neil Wilson
92888c803b bridge_driver.c: Fix autoconf setting
Code altered so that it is consistent with the associated comment. The
'autoconf' variable is forced to zero.

Signed-off-by: Neil Wilson <neil@brightbox.co.uk>
2011-10-03 23:35:29 -04:00
Marc-André Lureau
be5ec76630 Set to NULL members that have been freed to prevent crashes
Do not crash if virStreamFinish is called after error.

==11000== Invalid read of size 4
==11000==    at 0x373A8099A0: pthread_mutex_lock (pthread_mutex_lock.c:51)
==11000==    by 0x4C7CADE: virMutexLock (threads-pthread.c:85)
==11000==    by 0x4D57C31: virNetClientStreamRaiseError (virnetclientstream.c:203)
==11000==    by 0x4D385E4: remoteStreamFinish (remote_driver.c:3541)
==11000==    by 0x4D182F9: virStreamFinish (libvirt.c:14157)
==11000==    by 0x40FDC4: cmdScreenshot (virsh.c:3075)
==11000==    by 0x42BA40: vshCommandRun (virsh.c:14922)
==11000==    by 0x42ECCA: main (virsh.c:16381)
==11000==  Address 0x59b86c0 is 16 bytes inside a block of size 216 free'd
==11000==    at 0x4A06928: free (vg_replace_malloc.c:427)
==11000==    by 0x4C69E2B: virFree (memory.c:310)
==11000==    by 0x4D57B56: virNetClientStreamFree (virnetclientstream.c:184)
==11000==    by 0x4D3DB7A: remoteDomainScreenshot (remote_client_bodies.h:1812)
==11000==    by 0x4CFD245: virDomainScreenshot (libvirt.c:2903)
==11000==    by 0x40FB73: cmdScreenshot (virsh.c:3029)
==11000==    by 0x42BA40: vshCommandRun (virsh.c:14922)
==11000==    by 0x42ECCA: main (virsh.c:16381)
2011-10-03 11:43:31 -06:00
Eric Blake
8bdd603920 snapshot: implement getparent for vbox
Built by copying from existing functions.

* src/vbox/vbox_tmpl.c (vboxDomainSnapshotGetParent): New function.
2011-10-03 08:23:43 -06:00
Eric Blake
0664d41b55 snapshot: implement getparent for esx
Pretty easy to paste together compared to existing functions.

* src/esx/esx_driver.c (esxDomainSnapshotGetParent): New function.
2011-10-03 07:51:24 -06:00
Laine Stump
c329db7180 qemu: make PCI multifunction support more manual
When support for was added for PCI multifunction cards (in commit
9f8baf, first included in libvirt 0.9.3), it was done by always
turning on the multifunction bit for all PCI devices. Since that time
it has been realized that this is not an ideal solution, and that the
multifunction bit must be selectively turned on. For example, see

  https://bugzilla.redhat.com/show_bug.cgi?id=728174

and the discussion before and after

  https://www.redhat.com/archives/libvir-list/2011-September/msg01036.html

This patch modifies multifunction support so that the multifunction=on
option is only added to the qemu commandline for a device if its PCI
<address> definition has the attribute "multifunction='on'", e.g.:

  <address type='pci' domain='0x0000' bus='0x00'
           slot='0x04' function='0x0' multifunction='on'/>

In practice, the multifunction bit should only be turned on if
function='0' AND other functions will be used in the same slot - it
usually isn't needed for functions 1-7 (although there are apparently
some exceptions, e.g. the Intel X53 according to the QEMU source
code), and should never be set if only function 0 will be used in the
slot. The test cases have been changed accordingly to illustrate.

With this patch in place, if a user attempts to assign multiple
functions in a slot without setting the multifunction bit for function
0, libvirt will issue an error when the domain is defined, and the
define operation will fail. In the future, we may decide to detect
this situation and automatically add multifunction=on to avoid the
error; even then it will still be useful to have a manual method of
turning on multifunction since, as stated above, there are some
devices that excpect it to be turned on for all functions in a slot.

A side effect of this patch is that attempts to use the same PCI
address for two different devices will now log an error (previously
this would cause the domain define operation to fail, but there would
be no log message generated). Because the function doing this log was
almost completely rewritten, I didn't think it worthwhile to make a
separate patch for that fix (the entire patch would immediately be
obsoleted).
2011-10-01 11:48:28 -04:00
Laine Stump
be7bc4d5cc conf: remove unused VIR_ENUM_DECL
While adding a new enum, I noticed a VIR_ENUM_DECL for a type that
doesn't exist. There is also of course no matching VIR_ENUM_IMPL for
it.
2011-10-01 11:48:19 -04:00
Marc-André Lureau
41bf4e721e virsh: do not unlink NULL file
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
2011-09-30 19:22:06 -06:00
Serge E. Hallyn
30f555c6a8 lvm storage backend: handle command_names=1 in lvm.conf
If the regexes supported (?:pvs)?, then we could handle this by
optionally matching but not returning the initial command name.  But it
doesn't.  So add a new char* argument to
virStorageBackendRunProgRegex().  If that argument is NULL then we act
as usual.  Otherwise, if the string at that argument is found at the
start of a returned line, we drop that before running the regex.

With this patch, virt-manager shows me lvs with command_names 1 or 0.

The definitions of PVS_BASE etc may want to be moved into the configure
scripts (though given how PVS is found, IIUC that could only happen if
pvs was a link to pvs_real), but in any case no sense dealing with that
until we're sure this is an ok way to handle it.

Signed-off-by: Serge Hallyn <serge.hallyn@canonical.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2011-09-30 15:17:44 -06:00
Michal Privoznik
a111b9e24f qemu: Check for outstanding async job too
Currently, qemuDomainGetXMLDesc and qemudDomainGetInfo check for
outstanding synchronous job before (eventual) monitor entering.
However, there can be already async job set, e.g. migration.
2011-09-30 08:36:43 +02:00
Peter Krempa
086608de34 qemu: Fix error message mentioning VNC instead of SPICE 2011-09-29 15:07:45 +02:00
Xu He Jie
0ec9a8c2f2 virsh: Add 'reset' command for virsh
Signed-off-by: Xu He Jie <xuhj@linux.vnet.ibm.com>
2011-09-29 07:04:14 -06:00