Commit Graph

5439 Commits

Author SHA1 Message Date
John Ferlan
e4e4d17c9c qemu: Add support to get/set IOThread period and quota cgroup values
https://bugzilla.redhat.com/show_bug.cgi?id=1356937

Add support for IOThread quota/bandwidth and period parameters for non
session mode. If in session mode, then error out.  Uses all the same
places where {vcpu|emulator|global}_{period|quota} are adjusted and
adds the iothread values.
2016-08-03 06:36:22 -04:00
Daniel P. Berrange
9cf3c44ff5 qemu: only report errno in trace message on failure
Avoid reporting a stale errno value when the syscall succeeds,
instead always pass 0.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-08-03 10:54:38 +01:00
John Ferlan
1149fe4c15 qemu: Use the hostdev alias in qemuDomainAttachHostSCSIDevice error path
https://bugzilla.redhat.com/show_bug.cgi?id=1289391

Rather than pass the whole drive string (which contained the alias),
pass only the alias for the qemuMonitorDriveDel call in the error
path when adding a host device in the monitor fails.
2016-08-02 10:11:11 -04:00
John Ferlan
8527a25b32 qemu: Use qemuAliasFromHostdev
When building the command line alias and for SCSI Host Device deletion,
use the common API to build the alias
2016-08-02 10:11:11 -04:00
John Ferlan
647bc753d4 qemu: Introduce qemuAliasFromHostdev
Introduce a common API to generate the alias for a host device
2016-08-02 10:11:11 -04:00
John Ferlan
97ca6eed9a qemu: Add attempt to call qemuMonitorDriveDel for AttachSCSI failure path
Completion of fix for:
    https://bugzilla.redhat.com/show_bug.cgi?id=1336225

Similar to the other disk types, add the qemuMonitorDriveDel in the failure
to add/hotplug a SCSI disk.
2016-08-02 10:11:11 -04:00
John Ferlan
190e22c06b qemu: Add attempt to call qemuMonitorDriveDel for USB failure path
Partial fix for:
    https://bugzilla.redhat.com/show_bug.cgi?id=1336225

Similar to the other disk types, add the qemuMonitorDriveDel in the failure
to add/hotplug a USB.

Added a couple of other formatting changes just to have a less cluttered look
2016-08-02 10:11:11 -04:00
John Ferlan
dd0dbe1d66 qemu: Make QEMU_DRIVE_HOST_PREFIX more private
Move QEMU_DRIVE_HOST_PREFIX into the qemu_alias.c to dissuade future
callers from using it. Create qemuAliasDiskDriveSkipPrefix in order
to handle the current consumers that desire to check if an alias has
the drive- prefix and "get beyond it" in order to get the disk alias.
2016-08-02 10:11:11 -04:00
John Ferlan
f0f16c1e28 qemu: Use qemuAliasFromDisk to generate drive alias
Rather than open code build the drive alias command in multiple places,
use the helper to ensure consistency.
2016-08-02 10:11:11 -04:00
John Ferlan
13effcafd2 qemu: Use qemuAliasFromDisk instead of qemuDeviceDriveHostAlias
Since we already have a function that will generate the drivestr from
the alias, let's use it and remove the qemuDeviceDriveHostAlias.

Move the QEMU_DRIVE_HOST_PREFIX definition into qemu_alias.h

Also alter qemuAliasFromDisk to use the QEMU_DRIVE_HOST_PREFIX instead
of "drive-%s".
2016-08-02 10:11:11 -04:00
John Ferlan
30c3982bda qemu: Use qemuAliasFromDisk to generate drive alias
The qemuDomainSnapshotCreateSingleDiskActive open coded generating the
disk drive alias. Let's use the common function.
2016-08-02 10:11:11 -04:00
John Ferlan
f8d49d5b9f qemu: Remove generation of drive alias from qcow passphrase backends
Rather than pass the disks[i]->info.alias to qemuMonitorSetDrivePassphrase
and then generate the "drive-%s" alias from that, let's use qemuAliasFromDisk
prior to the call to generate the drive alias and then pass that along
thus removing the need to generate the alias from the monitor code.
2016-08-02 10:11:11 -04:00
John Ferlan
675a7e4ec1 qemu: Reorder qemuDomainAttachUSBMassStorageDevice failure path
Modify the error/exit path to match what was done for Virtio and SCSI.
If nothing else it'll have a consistent look'n'feel
2016-08-02 10:11:11 -04:00
Nikolay Shirokovskiy
b0c144c579 qemu: Set fake reboot flag to false when mode=agent
As commit id 'e2b86f580' notes, when mode=agent possibly setting the
fake reboot flag to true wouldn't be necessary; however, it doesn't
"force" the issue by just ensuring the fake reboot is false, so this
patch adds the explicit setting for the reboot path.

More investigation and details can be found in commit id '8be502fd'
as well as in the archives at:

  https://www.redhat.com/archives/libvir-list/2015-April/msg00715.html
2016-08-02 09:28:32 -04:00
Nikolay Shirokovskiy
3b676eb67f qemu: Set fake reboot flag only in acpi mode for shutdown
Conditional setting of the fake reboot flag should only happen for
the acpi mode shutdown path; however, for the agent mode shutdown,
the fake reboot should be cleared. This patch will essentially revert
commit id '8be502fd', but adds an explicit setting of the flag to false
when using mode=agent while also only conditionally setting the reboot
flag if the guest went away. This also avoids an issue where a shutdown
with reboot semantics is done from agent mode which sets the reboot
flag followed by a shutdown from within the guest which would result
in a reboot due to the fake reboot flag being set. The change will
also properly handle the cases described in the following archive post:

  https://www.redhat.com/archives/libvir-list/2015-April/msg00715.html
2016-08-02 09:28:32 -04:00
Chunyan Liu
c6f0e177a3 qemuDomainDeviceDefPostParse: add USB controller model check
To sync with virDomainControllerModelUSB, we add two models
in qemuControllerModelUSB 'qusb1' and 'qusb2', but those
models are not supported in qemu driver. So add check in
device post parse to report errors if 'qusb1' and 'qusb2'
are specified.

Signed-off-by: Chunyan Liu <cyliu@suse.com>
2016-08-02 14:02:21 +02:00
Chunyan Liu
be146b349f extend usb controller model to support xen pvusb
According to libxl implementation, it supports pvusb
controller of version 1.1 and version 2.0, and it
supports two types of backend, 'pvusb' (dom0 backend)
and 'qusb' (qemu backend). But currently pvusb backend
is not checked in yet.

To match libxl support, extend usb controller schema
to support two more models: qusb1 (qusb, version 1.1)
and 'qusb2' (qusb version 2.0).

Signed-off-by: Chunyan Liu <cyliu@suse.com>
2016-08-02 14:02:21 +02:00
Peter Krempa
e44cdaf80b qemu: cap: Refactor access to array in virQEMUCapsProbeQMPMachineTypes
Use a temporary pointer rather than always recalculating the index in a
very verbose way.
2016-08-02 13:50:36 +02:00
Peter Krempa
ceec23d97f qemu: caps: Sanitize storage of machine type related data
Add a structure to store the data and use a single array of the
structures rather than having 3 separate arrays with shared indexes.
2016-08-02 13:49:29 +02:00
Peter Krempa
d2d5a91126 qemu: capabilities: Drop unused function virQEMUCapsGetMachineTypes 2016-08-02 13:49:29 +02:00
Martin Kletzander
daf01a6125 qemu: Fix domain state after reset
When reset was called from a domain that crashed we didn't change the
crashed state into a paused one which could confuse users.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1269575

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-08-02 13:21:01 +02:00
Martin Kletzander
a2b97a8d91 qemu: Fix support for startupPolicy with volume/pool disks
Until now we simply errored out when the translation from pool+volume
failed.  However, we should instead check whether that disk is needed or
not since there is an option for that.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1168453

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-08-02 13:21:01 +02:00
Martin Kletzander
779a4ea906 qemu: Remove unnecessary label and its only reference
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-08-02 13:21:01 +02:00
Martin Kletzander
e2705cfb6e qemu: Make qemuDomainCheckDiskStartupPolicy self-contained
There is an error reset following the function and check for
startupPolicy before that.  Let's reflect those things inside that
function so that future code doesn't have to be that complex.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-08-02 13:21:01 +02:00
Boris Fiuczynski
230c631917 qemu: remove panic dev models s390 and pseries when migrating
The panic devices with models s390 and pseries are autogenerated.
For backwards compatibility reasons the devices are to be removed
when migrating.

Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2016-08-01 14:15:08 +02:00
Sascha Silbe
a5c420471b qemu: fix domain id after domainCreateWithFlags()
Ever since virDomainCreateWithFlags() was introduced by de3aadaa
[drivers: add virDomainCreateWithFlags if virDomainCreate exists], the
domain ID retrieved with virDomainGetID() was incorrect for several
drivers after virDomainCreateWithFlags() was called. The API consumer
had to look up the domain anew to retrieve the correct ID.

For the ESX driver, this was fixed in 6139b274 [esx: Update ID after
starting a domain]. For the openvz driver, it was fixed in fd81a097
[openvzDomainCreateWithFlags: set domain id to the correct value]. The
test driver, the OpenNebula driver (removed in the meantime) and the
vbox driver were already updating the domain ID correctly in
domainCreate().

Copy over the ID in qemuDomainCreateWithFlags() to fix this for the qemu
driver, too.

Fixes: de3aadaa ("drivers: add virDomainCreateWithFlags if virDomainCreate exists")
Reported-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Tested-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
2016-08-01 11:28:20 +02:00
Michal Privoznik
1e05846373 conf: Catch invalid memory model earlier
Consider the following XML snippet:

    <memory model=''>
      <target>
        <size unit='KiB'>523264</size>
        <node>0</node>
      </target>
    </memory>

Whats wrong you ask? The @model attribute. This should result in
an error thrown into users faces during virDomainDefine phase.
Except it doesn't. The XML validation catches this error, but if
users chose to ignore that, they will end up with invalid XML.
Well, they won't be able to start the machine - that's when error
is produced currently. But it would be nice if we could catch the
error like this earlier.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2016-07-29 11:03:24 +02:00
John Ferlan
8ad7eceb20 qemu: Need to free fileprops in error path
The virJSONValueObjectCreate only consumes the object on success, so on
failure we must free - from commit id 'f4441017' (found by Coverity).
2016-07-28 09:25:40 -04:00
Daniel P. Berrange
a48c714115 storage: remove "luks" storage volume type
The current LUKS support has a "luks" volume type which has
a "luks" encryption format.

This partially makes sense if you consider the QEMU shorthand
syntax only requires you to specify a format=luks, and it'll
automagically uses "raw" as the next level driver. QEMU will
however let you override the "raw" with any other driver it
supports (vmdk, qcow, rbd, iscsi, etc, etc)

IOW the intention though is that the "luks" encryption format
is applied to all disk formats (whether raw, qcow2, rbd, gluster
or whatever). As such it doesn't make much sense for libvirt
to say the volume type is "luks" - we should be saying that it
is a "raw" file, but with "luks" encryption applied.

IOW, when creating a storage volume we should use this XML

  <volume>
    <name>demo.raw</name>
    <capacity>5368709120</capacity>
    <target>
      <format type='raw'/>
      <encryption format='luks'>
        <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccd2f80d6f'/>
      </encryption>
    </target>
  </volume>

and when configuring a guest disk we should use

  <disk type='file' device='disk'>
    <driver name='qemu' type='raw'/>
    <source file='/home/berrange/VirtualMachines/demo.raw'/>
    <target dev='sda' bus='scsi'/>
    <encryption format='luks'>
      <secret type='passphrase' uuid='0a81f5b2-8403-7b23-c8d6-21ccd2f80d6f'/>
    </encryption>
  </disk>

This commit thus removes the "luks" storage volume type added
in

  commit 318ebb36f1
  Author: John Ferlan <jferlan@redhat.com>
  Date:   Tue Jun 21 12:59:54 2016 -0400

    util: Add 'luks' to the FileTypeInfo

The storage file probing code is modified so that it can probe
the actual encryption formats explicitly, rather than merely
probing existance of encryption and letting the storage driver
guess the format.

The rest of the code is then adapted to deal with
VIR_STORAGE_FILE_RAW w/ VIR_STORAGE_ENCRYPTION_FORMAT_LUKS
instead of just VIR_STORAGE_FILE_LUKS.

The commit mentioned above was included in libvirt v2.0.0.
So when querying volume XML this will be a change in behaviour
vs the 2.0.0 release - it'll report 'raw' instead of 'luks'
for the volume format, but still report 'luks' for encryption
format.  I think this change is OK because the storage driver
did not include any support for creating volumes, nor starting
guets with luks volumes in v2.0.0 - that only since then.
Clearly if we change this we must do it before v2.1.0 though.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2016-07-27 18:59:15 +01:00
Derbyshev Dmitry
438c204763 qemu: return balloon statistics when all domain statistics reported
To collect all balloon statistics for all guests it was necessary to make
several libvirt requests. Now it's possible to get all balloon statiscs via
single connectGetAllDomainStats call.

Signed-off-by: Derbyshev Dmitry <dderbyshev@virtuozzo.com>
2016-07-27 15:39:47 +02:00
Derbyshev Dmitry
c3e3227ac8 qemu: split qemuDomainMemoryStats into internal and external functions
Is necessary to call it from other contexts, such as qemuDomainGetStatsBalloon.

Signed-off-by: Derbyshev Dmitry <dderbyshev@virtuozzo.com>
2016-07-27 15:39:47 +02:00
Prasanna Kumar Kalever
7b7da9e283 qemu: command: Add support for multi-host gluster disks
To allow using failover with gluster it's necessary to specify multiple
volume hosts. Add support for starting qemu with such configurations.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
2016-07-27 13:38:53 +02:00
Peter Krempa
f444101729 qemu: command: Add infrastructure for object specified disk sources
To allow richer definitions of disk sources add infrastructure that will
allow to register functionst generating a JSON object based definition.

This infrastructure will then convert the definition to the proper
command line syntax and use it in cases where it's necessary. This will
allow to keep legacy definitions for back-compat when possible and use
the new definitions for the configurations requiring them.
2016-07-27 13:33:10 +02:00
Peter Krempa
1575f3e8d3 qemu: command: Refactor code extracted to qemuBuildDriveSourceStr
Avoid a large block by tweaking the condition skipping empty drives and
split up the switch containing two branches having different purpose.
2016-07-27 13:33:10 +02:00
Peter Krempa
3678d42705 qemu: command: Extract drive source command line formatter
The disk source formatting code grew rather ugly and complex and it will
get worse. Extract it into a separated function to contain the mess.
2016-07-27 13:33:10 +02:00
Peter Krempa
ccaaad62a8 qemu: command: Split out network disk URI building
Extract the code so that it can be called from multiple places. This
also removes a tricky fallthrough in the large switch in
qemuBuildNetworkDriveStr.
2016-07-27 13:33:10 +02:00
Peter Krempa
b8dc04a774 qemu: command: Rename qemuBuildNetworkDriveURI to qemuBuildNetworkDriveStr
The function builds also non-uri strings for the various protocols.
2016-07-27 13:33:10 +02:00
Peter Krempa
29f06ff548 util: storage: Add 'ssh' network storage protocol
Allow using 'ssh' protocol in backing chains and later for disks
themselves.
2016-07-27 13:24:20 +02:00
Shivaprasad G Bhat
707063efa8 qemu: Adjust the cur_ballon on coldplug/unplug of dimms
The cur_balloon also increases/decreases with dimm hotplug/unplug.
To be consistent, adjust the value for coldplug too. This was inconsistently
taken care when cur_ballon != memory to begin with. The patch fixes it
irrespective of that.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
2016-07-27 13:21:39 +02:00
John Ferlan
fc0378a973 Remove unnecessary virDomainDefClearDeviceAliases
Nothing in the code path after the removed call has needs/uses the alias
anyway (as would be the case for command line building or talking to monitor).
The alias is VIR_FREE'd in virDomainDeviceInfoClear which is called for any
device that needs/uses an alias via virDomainDeviceDefFree or virDomainDefFree
as well as during virDomainDeviceInfoFree for host devices.

For persistent domains, the domain definition (including aliases) gets
freed a few screens later when it's replaced with newDef.

For transient domains, the definition is freed/unref'd along with the
virDomainObj a few moments later.
2016-07-26 20:40:49 -04:00
Henning Schild
e975fd2d42 qemu: rename QEMU_CAPS_MLOCK to QEMU_CAPS_REALTIME_MLOCK
Purely cosmetic change to be consistent with the other names.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
2016-07-26 16:47:49 -04:00
Derbyshev Dmitry
200a40f94e qemu: expand domain memory statistics with 'last-update' timestamp
QEMU reports timestamp along with other memory statistics, but this information is not saved into domain statistics.
It could be useful to determine if the data reported is fresh or not.
Balloon statistics are not reported in hrf, so no modifications are made in qemu_monitor_text.c.

Signed-off-by: Derbyshev Dmitry <dderbyshev@virtuozzo.com>
2016-07-26 17:30:01 +02:00
Derbyshev Dmitry
65bf044686 qemu: expand domain memory statistics with 'usable'
'memtotal' in virtio drivers and qemu corresponds to 'available' in libvirt.
Because of that, 'stat-available-memory' is renamed into 'usable'.
Balloon statistics are not reported in hrf, so no modifications are made in qemu_monitor_text.c.

Signed-off-by: Derbyshev Dmitry <dderbyshev@virtuozzo.com>
2016-07-26 17:30:01 +02:00
Tomasz Flendrich
1aa5e66cf3 qemu: remove ccwaddrs caching
Dropping the caching of ccw address set.
The cached set is not required anymore, because the set is now being
recalculated from the domain definition on demand, so the cache
can be deleted.
2016-07-26 13:04:46 +02:00
Tomasz Flendrich
be396d955d qemu_hotplug: generate ccw address list on demand
Dropping the caching of ccw address set.
Instead of using the cached address set, functions in qemu_hotplug.c
now recalculate it on demand.
2016-07-26 13:04:46 +02:00
Tomasz Flendrich
af174f6e20 Add qemuDomainCCWAddrSetCreateFromDomain
The address sets (pci, ccw, virtio serial) are currently cached
in qemu private data, but all the information required to recreate
these sets is in the domain definition. Therefore I am removing
the redundant data and adding a way to recalculate these sets.

Add a function that calculates the ccw address set
from the domain definition.
2016-07-26 13:04:46 +02:00
Tomasz Flendrich
19a148b7c8 qemu: remove vioserialaddrs caching
Dropping the caching of virtio serial address set.
The cached set is not required anymore, because the set is now being
recalculated from the domain definition on demand, so the cache
can be deleted.

Credit goes to Cole Robinson.
2016-07-26 13:04:46 +02:00
Tomasz Flendrich
925fa4b905 qemu_hotplug: generate vioserial address list on demand
Dropping the caching of virtio serial address set.
Instead of using the cached address set, a function in qemu_hotplug.c
now recalculates it on demand.

Credit goes to Cole Robinson.
2016-07-26 13:04:46 +02:00
Tomasz Flendrich
40c284f0a6 add virDomainVirtioSerialAddrSetCreateFromDomain
The address sets (pci, ccw, virtio serial) are currently cached
in qemu private data, but all the information required to recreate
these sets is in the domain definition. Therefore I am removing
the redundant data and adding a way to recalculate these sets.

Add a function that calculates the virtio serial address set
from the domain definition.

Credit goes to Cole Robinson.
2016-07-26 13:04:46 +02:00
Pavel Hrdina
e7093b391d qemu_monitor: search memballoon QOM device path using alias
Commit 4a585a88 introduced searching QOM device path by alias, let's use it for
memballoon too.  This may speedup the search because in most cases we will find
the correct QOM device path directly by using alias without the need for the
recursion code.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2016-07-25 17:07:38 +02:00