Commit Graph

400 Commits

Author SHA1 Message Date
Laine Stump
72f8a7f197 qemu: new GRACEFUL flag for virDomainDestroy w/ QEMU support
When libvirt's virDomainDestroy API is shutting down the qemu process,
it first sends SIGTERM, then waits for 1.6 seconds and, if it sees the
process still there, sends a SIGKILL.

There have been reports that this behavior can lead to data loss
because the guest running in qemu doesn't have time to flush its disk
cache buffers before it's unceremoniously whacked.

This patch maintains that default behavior, but provides a new flag
VIR_DOMAIN_DESTROY_GRACEFUL to alter the behavior. If this flag is set
in the call to virDomainDestroyFlags, SIGKILL will never be sent to
the qemu process; instead, if the timeout is reached and the qemu
process still exists, virDomainDestroy will return an error.

Once this patch is in, the recommended method for applications to call
virDomainDestroyFlags will be with VIR_DOMAIN_DESTROY_GRACEFUL
included. If that fails, then the application can decide if and when
to call virDomainDestroyFlags again without
VIR_DOMAIN_DESTROY_GRACEFUL (to force the issue with SIGKILL).

(Note that this does not address the issue of existing applications
that have not yet been modified to use VIR_DOMAIN_DESTROY_GRACEFUL.
That is a separate patch.)
2012-02-03 14:21:17 -05:00
Martin Kletzander
3d93706d0d Added RSS reporting
Added RSS information gathering into qemuMemoryStats into qemu driver
and the reporting into virsh dommemstat.
2012-02-03 20:54:58 +08:00
Eric Blake
99fd69c3de block rebase: add new API virDomainBlockRebase
Qemu is adding the ability to do a partial rebase.  That is, given:

base <- intermediate <- current

virDomainBlockPull will produce:

current

but qemu now has the ability to leave base in the chain, to produce:

base <- current

Note that current qemu can only do a forward merge, and only with
the current image as the destination, which is fully described by
this API without flags.  But in the future, it may be possible to
enhance this API for additional scenarios by using flags:

Merging the current image back into a previous image (that is,
undoing a live snapshot), could be done by passing base as the
destination and flags with a bit requesting a backward merge.

Merging any other part of the image chain, whether forwards (the
backing image contents are pulled into the newer file) or backwards
(the deltas recorded in the newer file are merged back into the
backing file), could also be done by passing a new flag that says
that base should be treated as an XML snippet rather than an
absolute path name, where the XML could then supply the additional
instructions of which part of the image chain is being merged into
any other part.

* include/libvirt/libvirt.h.in (virDomainBlockRebase): New
declaration.
* src/libvirt.c (virDomainBlockRebase): Implement it.
* src/libvirt_public.syms (LIBVIRT_0.9.10): Export it.
* src/driver.h (virDrvDomainBlockRebase): New driver callback.
* src/rpc/gendispatch.pl (long_legacy): Add exemption.
* docs/apibuild.py (long_legacy_functions): Likewise.
2012-02-01 15:21:56 -07:00
Peter Krempa
c471e55e10 API: Add api to set and get domain metadata
This patch adds API to modify domain metadata for running and stopped
domains. The api supports changing description, title as well as the
newly added <metadata> element. The API has support for storing data in
the metadata element using xml namespaces.

* include/libvirt/libvirt.h.in
* src/libvirt_public.syms
        - add function headers
        - add enum to select metadata to operate on
        - export functions
* src/libvirt.c
        - add public api implementation
* src/driver.h
        - add driver support
* src/remote/remote_driver.c
* src/remote/remote_protocol.x
        - wire up the remote protocol
* include/libvirt/virterror.h
* src/util/virterror.c
        - add a new error message note that metadata for domain are
        missing
2012-02-01 15:01:38 -07:00
Jiri Denemark
02af3e13b2 virDomainGetDiskErrors public API
We already provide ways to detect when a domain has been paused as a
result of I/O error, but there was no way of getting the exact error or
even the device that experienced it.  This new API may be used for both.
2012-02-01 10:42:16 +01:00
Eric Blake
055bbf45e4 resize: slightly alter signature
Our existing virDomainBlockResize takes an unsigned long long
argument; if that command is later taught a DELTA and SHRINK flag,
we cannot change its type without breaking API (but at least such
a change would be ABI compatible).  Meanwhile, the only time a
negative size makes sense is if both DELTA and SHRINK are used
together, but if we keep the argument unsigned, applications can
pass the positive delta amount by which they would like to shrink
the system, and have the flags imply the negative value.  So,
since this API has not yet been released, and in the interest of
consistency with existing API, we swap virStorageVolResize to
always pass an unsigned value.

* include/libvirt/libvirt.h.in (virStorageVolResize): Use unsigned
argument.
* src/libvirt.c (virStorageVolResize): Likewise.
* src/driver.h (virDrvStorageVolUpload): Adjust clients.
* src/remote/remote_protocol.x (remote_storage_vol_resize_args):
Likewise.
* src/remote_protocol-structs: Regenerate.
Suggested by Daniel P. Berrange.
2012-01-31 11:58:06 -05:00
Eric Blake
5c6651fea2 docs: reorder public header
The bottom of the public header is reserved for deprecated APIs;
it's nicer to arrange things in logical groups.

* include/libvirt/libvirt.h.in (virConnectSetKeepAlive)
(virDomainGetCPUStats): Float earlier in the file.
2012-01-28 07:37:55 -07:00
KAMEZAWA Hiroyuki
e1eea7470b Add new public API virDomainGetCPUStats()
add new API virDomainGetCPUStats() for getting cpu accounting information
per real cpus which is used by a domain.  The API is designed to allow
future extensions for additional statistics.

based on ideas by Lai Jiangshan and Eric Blake.

* src/libvirt_public.syms: add API for LIBVIRT_0.9.10
* src/libvirt.c: define virDomainGetCPUStats()
* include/libvirt/libvirt.h.in: add virDomainGetCPUStats() header
* src/driver.h: add driver API
* python/generator.py: add python API (as not implemented)

Signed-off-by: Eric Blake <eblake@redhat.com>
2012-01-28 07:18:27 -07:00
Michal Privoznik
8f8b080263 Introduce virDomainPMSuspendForDuration API
This API allows a domain to be put into one of S# ACPI states.
Currently, S3 and S4 are supported. These states are shared
with virNodeSuspendForDuration.
However, for now we don't support any duration other than zero.
The same apply for flags.
2012-01-28 10:20:46 +01:00
Zeeshan Ali (Khattak)
6714fd04d2 resize: add virStorageVolResize() API
Add a new function to allow changing of capacity of storage volumes.
Plan out several flags, even if not all of them will be implemented
up front.

Expose the new command via 'virsh vol-resize'.

Signed-off-by: Eric Blake <eblake@redhat.com>
2012-01-27 19:56:18 -07:00
Cole Robinson
bb2eddc6cf Add new error code VIR_ERROR_AUTH_CANCELLED
And hook it up for policykit auth. This allows virt-manager to detect
that the user clicked the policykit 'cancel' button and not throw
an 'authentication failed' error message at the user.
2012-01-27 16:53:27 -05:00
Michal Privoznik
adb99a05b1 storage: Support different wiping algorithms
Currently, we support only filling a volume with zeroes on wiping.
However, it is not enough as data might still be readable by
experienced and equipped attacker. Many technical papers have been
written, therefore we should support other wiping algorithms.
2012-01-26 13:59:30 +01:00
Michal Privoznik
109593ecb0 snapshots: Introduce VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE flag
With this flag, virDomainSnapshotCreate will use fs-freeze and
fs-thaw guest agent commands to quiesce guest's disks.
2012-01-25 10:59:41 +01:00
Daniel P. Berrange
0b7ddf9e77 Add new virDomainShutdownFlags API
Add a new API virDomainShutdownFlags and define:

    VIR_DOMAIN_SHUTDOWN_DEFAULT        = 0,
    VIR_DOMAIN_SHUTDOWN_ACPI_POWER_BTN = (1 << 0),
    VIR_DOMAIN_SHUTDOWN_GUEST_AGENT    = (1 << 1),

Also define some flags for the reboot API

    VIR_DOMAIN_REBOOT_DEFAULT        = 0,
    VIR_DOMAIN_REBOOT_ACPI_POWER_BTN = (1 << 0),
    VIR_DOMAIN_REBOOT_GUEST_AGENT    = (1 << 1),

Although these two APIs currently have the same flags, using
separate enums allows them to expand separately in the future.

Add stub impls of the new API for all existing drivers
2012-01-24 12:19:51 +01:00
Eric Blake
7b4e5693c1 API: make declaration of _LAST enum values conditional
Although this is a public API break, it only affects users that
were compiling against *_LAST values, and can be trivially
worked around without impacting compilation against older
headers, by the user defining VIR_ENUM_SENTINELS before using
libvirt.h.  It is not an ABI break, since enum values do not
appear as .so entry points.  Meanwhile, it prevents users from
using non-stable enum values without explicitly acknowledging
the risk of doing so.

See this list discussion:
https://www.redhat.com/archives/libvir-list/2012-January/msg00804.html

* include/libvirt/libvirt.h.in: Hide all sentinels behind
LIBVIRT_ENUM_SENTINELS, and add missing sentinels.
* src/internal.h (VIR_DEPRECATED): Allow inclusion after
libvirt.h.
(LIBVIRT_ENUM_SENTINELS): Expose sentinels internally.
* daemon/libvirtd.h: Use the sentinels.
* src/remote/remote_protocol.x (includes): Don't expose sentinels.
* python/generator.py (enum): Likewise.
* tests/cputest.c (cpuTestCompResStr): Silence compiler warning.
* tools/virsh.c (vshDomainStateReasonToString)
(vshDomainControlStateToString): Likewise.
2012-01-20 16:05:51 -07:00
Shradha Shah
52d064f42d Added new option to virsh net-dumpxml called --inactive
The above option helps to differentiate between implicit and explicit
interface pools.
2012-01-11 13:15:09 -07:00
Eric Blake
4e9953a426 snapshot: allow reuse of existing files in disk snapshot
When disk snapshots were first implemented, libvirt blindly refused
to allow an external snapshot destination that already exists, since
qemu will blindly overwrite the contents of that file during the
snapshot_blkdev monitor command, and we don't like a default of
data loss by default.  But VDSM has a scenario where NFS permissions
are intentionally set so that the destination file can only be
created by the management machine, and not the machine where the
guest is running, so that libvirt will necessarily see the destination
file already existing; adding a flag will allow VDSM to force the file
reuse without libvirt complaining of possible data loss.

https://bugzilla.redhat.com/show_bug.cgi?id=767104

* include/libvirt/libvirt.h.in (virDomainSnapshotCreateFlags): Add
VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT.
* src/libvirt.c (virDomainSnapshotCreateXML): Document it.  Add
note about partial failure.
* tools/virsh.c (cmdSnapshotCreate, cmdSnapshotCreateAs): Add new
flag.
* tools/virsh.pod (snapshot-create, snapshot-create-as): Document
it.
* src/qemu/qemu_driver.c (qemuDomainSnapshotDiskPrepare)
(qemuDomainSnapshotCreateXML): Implement the new flag.
2012-01-10 11:53:23 -07:00
Eric Blake
269ce467fc domiftune: clean up previous patches
Most severe here is a latent (but currently untriggered) memory leak
if any hypervisor ever adds a string interface property; the
remainder are mainly cosmetic.

* include/libvirt/libvirt.h.in (VIR_DOMAIN_BANDWIDTH_*): Move
macros closer to interface that uses them, and document type.
* src/libvirt.c (virDomainSetInterfaceParameters)
(virDomainGetInterfaceParameters): Formatting tweaks.
* daemon/remote.c (remoteDispatchDomainGetInterfaceParameters):
Avoid memory leak.
* src/libvirt_public.syms (LIBVIRT_0.9.9): Sort lines.
* src/libvirt_private.syms (domain_conf.h): Likewise.
* src/qemu/qemu_driver.c (qemuDomainSetInterfaceParameters): Fix
comments, break long lines.
2012-01-02 14:35:12 -07:00
Hu Tao
85f3493f34 domiftune: Add API virDomain{S,G}etInterfaceParameters
The APIs are used to set/get domain's network interface's parameters.
Currently supported parameters are bandwidth settings.

* include/libvirt/libvirt.h.in: new API and parameters definition
* python/generator.py: skip the Python API generation
* src/driver.h: add new entry to the driver structure
* src/libvirt_public.syms: export symbols
2011-12-29 18:24:43 +08:00
Hu Tao
c57ca57034 add new API virDomain{G, S}etNumaParameters
Set up the types for the numa functions and insert them into the
virDriver structure definition.
2011-12-20 10:21:37 -07:00
Peter Krempa
8fb2aeb662 migration: Add more specific error code/message on migration abort
A generic error code was returned, if the user aborted a migration job.
This made it hard to distinguish between a user requested abort and an
error that might have occured. This patch introduces a new error code,
which is returned in the specific case of a user abort, while leaving
all other failures with their existing code. This makes it easier to
distinguish between failure while mirgrating and an user requested
abort.

 * include/libvirt/virterror.h: - add new error code
 * src/util/virterror.c: - add message for the new error code
 * src/qemu/qemu_migration.h: - Emit operation aborted error instead of
                                operation failed, on migration abort
2011-12-16 16:38:26 +01:00
Jiri Denemark
38527c9ae0 qemu: Rework handling of shutdown event
When QEMU guest finishes its shutdown sequence, qemu stops virtual CPUs
and when started with -no-shutdown waits for us to kill it using
SGITERM. Since QEMU is flushing its internal buffers, some time may pass
before QEMU actually dies. We mistakenly used "paused" state (and
events) for this which is quite confusing since users may see a domain
going to pause while they expect it to shutdown. Since we already have
"shutdown" state with "the domain is being shut down" semantics, we
should use it for this state.

However, the state didn't have a corresponding event so I created one
and called its detail as VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED (guest OS
finished its shutdown sequence) with the intent to add
VIR_DOMAIN_EVENT_SHUTDOWN_STARTED in the future if we have a
sufficiently capable guest agent that can notify us when guest OS starts
to shutdown.
2011-12-05 14:14:31 +01:00
Peter Krempa
17c7795561 python: Expose binding for virNodeGetMemoryStats()
This patch adds binding for virNodeGetMemoryStats method of libvirtd.
Return value is represented as a python dictionary mapping field
names to values.
2011-12-05 12:22:33 +01:00
Peter Krempa
49556023f2 python: Expose binding for virNodeGetCPUStats()
This patch adds binding for virNodeGetCPUStats method of libvirtd.
Return value is represented as a python dictionary mapping field names
to values.
2011-12-05 12:22:33 +01:00
Daniel P. Berrange
866b0a7069 Fix values of PM target type constants
The VIR_NODE_SUSPEND_TARGET constants are not flags, so they
should just be assigned straightforward incrementing values.

* include/libvirt/libvirt.h.in: Change VIR_NODE_SUSPEND_TARGET
  values
* src/util/virnodesuspend.c: Fix suspend target checks
2011-11-30 10:12:29 +00:00
Lei Li
1f8a339dee Add new API virDomain{Set, Get}BlockIoTune
This patch add new pulic API virDomainSetBlockIoTune and
virDomainGetBlockIoTune.

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>
2011-11-29 17:29:33 -07:00
Hu Tao
6ac81c8ec8 blkiotune: add interface for blkiotune.device_weight
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>
2011-11-29 12:26:21 -07:00
Osier Yang
caef87d557 block_resize: Define the new API
The new API is named as "virDomainBlockResize", intending to add
support for qemu monitor command "block_resize" (both HMP and QMP).

Similar with APIs like "virDomainSetMemoryFlags", the units for
argument "size" is kilobytes.
2011-11-29 21:40:43 +08:00
Srivatsa S. Bhat
979676e3db Add a public API to invoke suspend/resume on the host
Implement the public definitions for the new API
virNodeSuspendForDuration() which will be subsequently used to
do a timed suspend on the host.
2011-11-29 17:29:16 +08:00
Jiri Denemark
afdf014f4f Introduce virConnectIsAlive API
This API can be used to check if the socket associated with
virConnectPtr is still open or it was closed (probably because keepalive
protocol timed out). If there the connection is local (i.e., no socket
is associated with the connection, it is trivially always alive.
2011-11-24 12:00:10 +01:00
Jiri Denemark
8d6e3edd0e Introduce virConnectSetKeepAlive
virConnectSetKeepAlive public API can be used by a client connecting to
remote server to start using keepalive protocol. The API is handled
directly by remote driver and not transmitted over the wire to the
server.
2011-11-24 11:44:08 +01:00
Eric Blake
3ac26e2645 API: prefer 'disk' over 'block' or 'path'
Given that we can now handle the target's disk shorthand, in addition
to an absolute path to the file or block device used on the host,
the term 'disk' fits a bit better as the parameter name than 'path'.

* include/libvirt/libvirt.h.in: Update some parameter names.
* src/libvirt.c (virDomainBlockStats, virDomainBlockStatsFlags)
(virDomainBlockPeek, virDomainGetBlockInfo, virDomainBlockJobAbort)
(virDomainGetBlockJobInfo, virDomainBlockJobSetSpeed)
(virDomainBlockPull): Likewise.
2011-11-23 06:10:30 -07:00
Srivatsa S. Bhat
e352b16400 Export KVM Host Power Management capabilities
This patch exports KVM Host Power Management capabilities as XML so that
higher-level systems management software can make use of these features
available in the host.

The script "pm-is-supported" (from pm-utils package) is run to discover if
Suspend-to-RAM (S3) or Suspend-to-Disk (S4) is supported by the host.
If either of them are supported, then a new tag "<power_management>" is
introduced in the XML under the <host> tag.

However in case the query to check for power management features succeeded,
but the host does not support any such feature, then the XML will contain
an empty <power_management/> tag. In the event that the PM query itself
failed, the XML will not contain any "power_management" tag.

To use this, new APIs could be implemented in libvirt to exploit power
management features such as S3/S4.
2011-11-22 11:31:22 +08:00
Eric Blake
a218c81da2 API: add VIR_TYPED_PARAM_STRING
This allows strings to be transported between client and server
in the context of name-type-value virTypedParameter functions.
For compatibility,

    o new clients will not send strings to old servers, based on
      a feature check
    o new servers will not send strings to old clients without the
      flag VIR_TYPED_PARAM_STRING_OKAY; this will be enforced at
      the RPC layer in the next patch, so that drivers need not
      worry about it in general.  The one exception is that
      virDomainGetSchedulerParameters lacks a flags argument, so
      it must not return a string; drivers that forward that
      function on to virDomainGetSchedulerParametersFlags will
      have to pay attention to the flag.
    o the flag VIR_TYPED_PARAM_STRING_OKAY is set automatically,
      based on a feature check (so far, no driver implements it),
      so clients do not have to worry about it

Future patches can then enable the feature on a per-driver basis.

This patch also ensures that drivers can blindly strdup() field
names (previously, a malicious client could stuff 80 non-NUL bytes
into field and cause a read overrun).

* src/libvirt_internal.h (VIR_DRV_FEATURE_TYPED_PARAM_STRING): New
driver feature.
* src/libvirt.c (virTypedParameterValidateSet)
(virTypedParameterSanitizeGet): New helper functions.
(virDomainSetMemoryParameters, virDomainSetBlkioParameters)
(virDomainSetSchedulerParameters)
(virDomainSetSchedulerParametersFlags)
(virDomainGetMemoryParameters, virDomainGetBlkioParameters)
(virDomainGetSchedulerParameters)
(virDomainGetSchedulerParametersFlags, virDomainBlockStatsFlags):
Use them.
* src/util/util.h (virTypedParameterArrayClear): New helper
function.
* src/util/util.c (virTypedParameterArrayClear): Implement it.
* src/libvirt_private.syms (util.h): Export it.
Based on an initial patch by Hu Tao, with feedback from
Daniel P. Berrange.

Signed-off-by: Eric Blake <eblake@redhat.com>
2011-11-11 17:21:36 -07:00
Daniel P. Berrange
26ff8996b1 Fix naming of constant for disk event
All constants related to events should have a prefix of
VIR_DOMAIN_EVENT_

* include/libvirt/libvirt.h.in, src/qemu/qemu_domain.c:
  Rename VIR_DOMAIN_DISK_CHANGE_MISSING_ON_START to
  VIR_DOMAIN_EVENT_DISK_CHANGE_MISSING_ON_START
2011-11-04 12:16:19 +00:00
Eric Blake
319992d4b6 API: document scheduler parameter names
Document the parameter names that will be used by
virDomain{Get,Set}SchedulerParameters{,Flags}, rather than
hard-coding those names in each driver, to match what is
done with memory, blkio, and blockstats parameters.

* include/libvirt/libvirt.h.in (VIR_DOMAIN_SCHEDULER_CPU_SHARES)
(VIR_DOMAIN_SCHEDULER_VCPU_PERIOD)
(VIR_DOMAIN_SCHEDULER_VCPU_QUOTA, VIR_DOMAIN_SCHEDULER_WEIGHT)
(VIR_DOMAIN_SCHEDULER_CAP, VIR_DOMAIN_SCHEDULER_RESERVATION)
(VIR_DOMAIN_SCHEDULER_LIMIT, VIR_DOMAIN_SCHEDULER_SHARES): New
field name macros.
* src/qemu/qemu_driver.c (qemuSetSchedulerParametersFlags)
(qemuGetSchedulerParametersFlags): Use new defines.
* src/test/test_driver.c (testDomainGetSchedulerParamsFlags)
(testDomainSetSchedulerParamsFlags): Likewise.
* src/xen/xen_hypervisor.c (xenHypervisorGetSchedulerParameters)
(xenHypervisorSetSchedulerParameters): Likewise.
* src/xen/xend_internal.c (xenDaemonGetSchedulerParameters)
(xenDaemonSetSchedulerParameters): Likewise.
* src/lxc/lxc_driver.c (lxcSetSchedulerParametersFlags)
(lxcGetSchedulerParametersFlags): Likewise.
* src/esx/esx_driver.c (esxDomainGetSchedulerParametersFlags)
(esxDomainSetSchedulerParametersFlags): Likewise.
* src/libxl/libxl_driver.c (libxlDomainGetSchedulerParametersFlags)
(libxlDomainSetSchedulerParametersFlags): Likewise.
2011-11-02 13:52:56 -06:00
Sage Weil
536d1f8746 secret: add Ceph secret type
Add a new secret type to store a Ceph authentication key. The name
is simply an identifier for easy human reference.

The xml looks like this:

<secret ephemeral='no' private='no'>
 <uuid>0a81f5b2-8403-7b23-c8d6-21ccc2f80d6f</uuid>
 <usage type='ceph'>
   <name>mycluster_admin</name>
 </usage>
</secret>

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Josh Durgin <josh.durgin@dreamhost.net>
2011-10-28 11:34:17 -06:00
Daniel P. Berrange
6aa27da287 Extend graphics event to include UNIX socket
Not all VNC/SPICE servers use a TCP socket for their connections.
It is possible to configure a UNIX socket server. The graphics
event must thus include a UNIX socket address type.

* include/libvirt/libvirt.h.in: Add UNIX socket address type
  for graphics event
* src/qemu/qemu_monitor_json.c: Add 'unix' string to address
  type enum
2011-10-28 10:23:53 +01:00
Daniel P. Berrange
9d96f1ce90 Introduce the virDomainOpenGraphics API
The virDomainOpenGraphics API allows a libvirt client to pass in
a file descriptor for an open socket pair, and get it connected
to the graphics display of the guest. This is limited to working
with local libvirt hypervisors connected over a UNIX domain
socket, since it will use UNIX FD passing

* include/libvirt/libvirt.h.in: Define virDomainOpenGraphics
* src/driver.h: Define driver for virDomainOpenGraphics
* src/libvirt_public.syms, src/libvirt.c: Entry point for
  virDomainOpenGraphics
* src/libvirt_internal.h: VIR_DRV_FEATURE_FD_PASSING
2011-10-28 10:23:51 +01:00
Michal Privoznik
baf2ff7e90 startupPolicy: Emit event on disk source dropping
If a disk source gets dropped because it is not accessible,
mgmt application might want to be informed about this. Therefore
we need to emit an event. The event presented in this patch
is however a bit superset of what written above. The reason is simple:
an intention to be easily expanded, e.g. on 'user ejected disk
in guest' events. Therefore, callback gets source string and disk alias
(which should be unique among a domain) and reason (an integer);
2011-10-25 09:27:10 +02:00
Daniel P. Berrange
777ffbd0e2 Allow for URI aliases when connecting to libvirt
This adds support for a libvirt client configuration file
either /etc/libvirt/libvirt.conf for privileged clients,
or $HOME/.libvirt/libvirt.conf for unprivileged clients.

It allows one parameter

 uri_aliases = [
   "hail=qemu+ssh://root@hail.cloud.example.com/system",
   "sleet=qemu+ssh://root@sleet.cloud.example.com/system",
 ]

Any call to virConnectOpen with a non-NULL URI will first
attempt to match against the uri_aliases list. An application
can disable this by using VIR_CONNECT_NO_ALIASES

* docs/uri.html.in: Document URI aliases
* include/libvirt/libvirt.h.in: Add VIR_CONNECT_NO_ALIASES
* libvirt.spec.in, mingw32-libvirt.spec.in: Add /etc/libvirt/libvirt.conf
* src/Makefile.am: Install default config file
* src/libvirt.c: Add support for URI aliases
* src/remote/remote_driver.c: Don't try to handle URIs
  with no scheme and which clearly are not paths
* src/util/conf.c: Don't raise error on virConfFree(NULL)
* src/xen/xen_driver.c: Don't raise error on URIs
  with no scheme
2011-10-19 09:14:34 +01:00
Philipp Hahn
0a71c79a34 Fix two comments related to error handling
Signed-off-by: Philipp Hahn <hahn@univention.de>
2011-10-17 17:21:56 +02:00
Michal Privoznik
4dadfe59d5 virDomainCoreDump: Introduce VIR_DUMP_RESET flag
This flag is intended to allow user to do so called system reset
after dump, instead of sending ACPI reboot event.
2011-10-13 09:32:27 +02:00
Eric Blake
8b6d1a2068 snapshot: add API for filtering by leaves
Counterpart to --roots.

* include/libvirt/libvirt.h.in (VIR_DOMAIN_SNAPSHOT_LIST_LEAVES):
New flag.
* src/libvirt.c (virDomainSnapshotNum, virDomainSnapshotListNames)
(virDomainSnapshotNumChildren)
(virDomainSnapshotListChildrenNames): Document it.
* tools/virsh.c (cmdSnapshotList): Expose it.
* tools/virsh.pod (snapshot-list): Document --leaves.
2011-10-12 16:03:19 -06:00
Eric Blake
f2013c9dd1 snapshot: new virDomainSnapshotListChildrenNames API
The previous API addition allowed traversal up the hierarchy;
this one makes it easier to traverse down the hierarchy.

In the python bindings, virDomainSnapshotNumChildren can be
generated, but virDomainSnapshotListChildrenNames had to copy
from the hand-written example of virDomainSnapshotListNames.

* include/libvirt/libvirt.h.in (virDomainSnapshotNumChildren)
(virDomainSnapshotListChildrenNames): New prototypes.
(VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS): New flag alias.
* src/libvirt.c (virDomainSnapshotNumChildren)
(virDomainSnapshotListChildrenNames): New functions.
* src/libvirt_public.syms: Export them.
* src/driver.h (virDrvDomainSnapshotNumChildren)
(virDrvDomainSnapshotListChildrenNames): New callbacks.
* python/generator.py (skip_impl, nameFixup): Update lists.
* python/libvirt-override-api.xml: Likewise.
* python/libvirt-override.c
(libvirt_virDomainSnapshotListChildrenNames): New wrapper function.
2011-10-10 16:54:16 -06:00
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
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
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
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
Xu He Jie
541ff63615 api: Add public api for 'reset'
Add new public api for 'reset'.
It can reset domain immediately without any guest shutdown.

Signed-off-by: Xu He Jie <xuhj@linux.vnet.ibm.com>
2011-09-29 06:52:42 -06:00