In near future we will need more than just a plain VIR_STRDUP().
Better implement that in a separate function and in
qemuBuildMemoryBackendStr() which is complicated enough already.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This function works over domain definition and not domain object.
Its name is thus misleading.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
After the virNetDaemonAddServerPostExec call in virtlogd we should have
netserver refcount set to 2. One goes to netdaemon servers hashtable
and one goes to virt{logd,lock} own reference to netserver. Let's add
the missing increment in virNetDaemonAddServerPostExec itself while
holding the daemon lock.
Since lockd defers management of the @srv object by the presence
in the hash table, virLockDaemonNewPostExecRestart must Unref the
alloc'd Ref on the @srv object done as part of virNetDaemonAddServerPostExec
and virNetServerNewPostExecRestart processing. The virNetDaemonGetServer
in lock_daemon main will also take a reference which is Unref'd during
main cleanup.
Commit id '252610f7d' used a hash table to store the @srv, but
didn't handle the virObjectUnref if virNetDaemonNew failed nor
did it use virObjectUnref once successfully placed into the table
which will now be managing it's lifetime (and would cause the
virObjectRef if successfully inserted into the table).
When coverage build is enabled, gcc complains about it:
In file included from qemu/qemu_agent.h:29:0,
from qemu/qemu_driver.c:47:
qemu/qemu_driver.c: In function 'qemuDomainSetInterfaceParameters':
./conf/domain_conf.h:3397:1: error: inlining failed in call to
'virDomainNetTypeSharesHostView': call is unlikely and code size would
grow [-Werror=inline]
virDomainNetTypeSharesHostView(const virDomainNetDef *net)
^
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This patch exposes additional methods of the native VBOX API to the
libvirt 'unified' vbox API to deal with IStorageController. The exposed
methods are:
* IStorageController->GetStorageControllerType()
* IStorageController->SetStorageControllerType()
* IMachine->GetStorageControllers()
Original code was checking for non empty disk source before proceeding
to actually attach disk device to VM. This prevented from creating
empty removable devices like DVD or floppy. Therefore, this patch
re-organizes the loop work-flow to allow such configurations as well as
makes the code follow better libvirt practices. Additionally, adjusted
debug logs to be more helpful - removed old ones and added new which
give more valuable info for troubleshooting.
Previously, if one tried to define a VBOX VM and the API failed to
perform the requested actions for some reason, it would just log the
error and move on to process remaining disk definitions. This is not
desired as it could result in incorrectly defined VM without the caller
even knowing about it. So now all the code paths that call
virReportError are now treated as hard failures as they should have
been.
Remove the setting since it's unused as of commit 34364df3 which should
have never copied it in from the old code which ended up getting removed
as part of commit c7c286c6.
This commit primes vboxAttachDrives for further changes so when they
are made, the diff is less noisy:
* move variable declarations to the top of the function
* add disk variable to replace all the def->disks[i] instances
* add cleanup at the end of the loop body, so it's all in one place
rather than scattered through the loop body. It's purposefully
called 'cleanup' rather than 'skip' or 'continue' because future
commit will treat errors as hard-failures.
Previously, the driver was computing VBOX's devicePort/deviceSlot values
based on device name and max port/slot values. While this worked, it
completely ignored <address> values. Additionally, libvirt's built-in
virDomainDiskDefAssignAddress already does a good job setting default
values on virDomainDeviceDriveAddress struct which we can use to set
devicePort and deviceSlot and accomplish the same result while allowing
the customizing those via XML. Also, this allows to remove some code
which will make further patches smaller.
When registering a VM we call OpenMedium on each disk image which adds it
to vbox's global media registry. Therefore, we should make sure to call
Close when unregistering VM so we cleanup the media registry entries
after ourselves - this does not remove disk image files. This follows
the behaviour of the VBoxManage unregistervm command.
Right-aligning backslashes when defining macros or using complex
commands in Makefiles looks cute, but as soon as any changes is
required to the code you end up with either distractingly broken
alignment or unnecessarily big diffs where most of the changes
are just pushing all backslashes a few characters to one side.
Generated using
$ git grep -El '[[:blank:]][[:blank:]]\\$' | \
grep -E '*\.([chx]|am|mk)$$' | \
while read f; do \
sed -Ei 's/[[:blank:]]*[[:blank:]]\\$/ \\/g' "$f"; \
done
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
When a user provides the backing chain, we will not need to re-detect
all the backing stores again, but should move to the end of the user
specified chain. Additionally if a user provides a full terminated chain
we should not attempt any further detection.
Separate it so that it deals only with single virStorageSource, so that
it can later be reused for full backing chain support.
Two aliases are passed since authentication is more relevant to the
'storage backend' whereas encryption is more relevant to the protocol
layer. When using node names, the aliases will be different.
qemuDomainGetImageIds and qemuDomainStorageFileInit are helpful when
trying to access a virStorageSource from the qemu driver since they
figure out the correct uid and gid for the image.
When accessing members of a backing chain the permissions for the top
level would be used. To allow using specific permissions per backing
chain level but still allow inheritance from the parent of the chain we
need to add a new parameter to the image ID APIs.
Until now we ignored user-provided backing chains and while detecting
the code inherited labels of the parent device. With user provided
chains we should keep this functionality, so label of the parent image
in the backing chain will be applied if an image-specific label is not
present.
Until now we ignored user-provided backing chains and while detecting
the code inherited labels of the parent device. With user provided
chains we should keep this functionality, so label of the parent image
in the backing chain will be applied if an image-specific label is not
present.
virSecuritySELinuxSetImageLabelInternal assigns different labels to
backing chain members than to the parent image. This was done via the
'first' flag. Convert it to passing in pointer to the parent
virStorageSource. This will allow us to use the parent virStorageSource
in further changes.
When the user provides backing chain, we don't need the full support for
traversing the backing chain. This patch adds a feature check for the
virStorageSourceAccess API.
The 'file access' module of the storage driver has few feature checks to
determine whether libvirt supports given storage driver method. The code
to retrieve the driver struct needed for the check is the same so it can
be extracted.
We handle incremental storage migration in a different way. The support
for this new (as of QEMU 2.10) parameter is only needed for full
coverage of migration parameters used by QEMU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We already support several ways of setting migration bandwidth and this
is not adding another one. With this patch we are able to read and write
this parameter using query-migrate-parameters and migrate-set-parameters
in one call with all other parameters.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The parameters used "migrate" prefix which is pretty redundant and
qemuMonitorMigrationParams structure is our internal representation of
QEMU migration parameters and it is supposed to use names which match
QEMU names.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We already support setting the maximum downtime with a dedicated
virDomainMigrateSetMaxDowntime API. This patch does not implement
another way of setting the downtime by adding a new public migration
parameter. It just makes sure any parameter we are able to get from a
QEMU monitor by query-migrate-parameters can be passed back to QEMU via
migrate-set-parameters.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The check can be easily replaced with a simple test in the JSON
implementation and we don't need to update it every time a new parameter
is added.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The macro (now called PARSE_SET) is now usable for any type which needs
a *_set bool for indicating a valid value.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Linux kernel shows our "cmt" feature as "cqm". Let's mention the name in
the cpu_map.xml to make it easier to find.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Since vhostuser type is really a tap that is just plugged into
different type of bridge, supporting QoS is trivial.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
For instance, NET_TYPE_MCAST doesn't support setting QoS. Instead
of claiming success and doing nothing, we should be explicit
about that and report an error.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1427049
Use virStorageBackendCreateVolUsingQemuImg to apply the LUKS information
to the logical volume just created. As part of the processing of the
lvcreate command add 2MB to the capacity to account for the LUKS header
when it's determined that the volume desires to use encryption.
Refactor to extract out the LVCREATE command. This also removes the
need for the local @created since the error path can now only be reached
after the creation of the logical volume.
Signed-off-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1490279
Turns out the virStorageBackendVolResizeLocal did not differentiate
whether the target volume was a LUKS volume or not and just blindly
did the ftruncate() on the target volume.
Follow the volume creation logic (in general) and create a qemu-img
resize command to resize the target volume for LUKS ensuring that
the --object secret is provided as well as the '--image-opts' used
by the qemu-img resize logic to describe the path and secret ensuring
that it's using the luks driver on the volume of course.
Since all that was really needed was a couple of fields and building
the object can be more generic, let's alter the args a bit. This will
be useful shortly for adding the secret object for a volume resize
operation on a luks volume that will need a secret object.
Rather than passing just the path, pass the virStorageVolDefPtr as we're
going to need it shortly.
Also fix the order of code and stack variables in the calling function
virStorageBackendVolResizeLocal.
Some globbing chars in the domain name could be used to break out of
apparmor rules, so lets forbid these when in virt-aa-helper.
Also adding a test to ensure all those cases were detected as bad char.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Don't leak @blockNodes in the loop.
==226576== 7,120 bytes in 60 blocks are definitely lost in loss record 122 of 125
==226576== at 0x4835214: calloc (vg_replace_malloc.c:711)
==226576== by 0x4950D7B: virAllocN (viralloc.c:191)
==226576== by 0x49EB5BB: virXPathNodeSet (virxml.c:676)
==226576== by 0x104DB67: virQEMUCapsLoadCPUModels (qemu_capabilities.c:3738)
==226576== by 0x105510D: virQEMUCapsLoadCache (qemu_capabilities.c:3929)
==226576== by 0x104459F: qemuTestParseCapabilities (testutilsqemu.c:498)
==226576== by 0x1040DC9: testQemuCapsCopy (qemucapabilitiestest.c:105)
==226576== by 0x1041F07: virTestRun (testutils.c:180)
==226576== by 0x1040B45: mymain (qemucapabilitiestest.c:181)
==226576== by 0x104320F: virTestMain (testutils.c:1119)
==226576== by 0x1041149: main (qemucapabilitiestest.c:193)
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Hot-adding disks does not parse the full XML to generate apparmor rules.
Instead it uses -f <PATH> to append a generic rule for that file path.
580cdaa7: "virt-aa-helper: locking disk files for qemu 2.10" implemented
the qemu 2.10 requirement to allow locking on disks images that are part of
the domain xml.
But on attach-device a user will still trigger an apparmor deny by going
through virt-aa-helper -f, to fix that add the lock "k" permission to the
append file case of virt-aa-helper.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
When adding CPU usability blockers I forgot to properly free them when
in virDomainCapsCPUModelsDispose.
Reported-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
The assumption so far was an average of 4 disks per guest.
But some architectures, like s390x, still often use plenty of smaller disks.
To include those in the considerations an assumption of an average of 10
disks is more reasonable.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
The initial assumption was ~2 files per guest, but some common setups
like Openstack drive up to 4 files per guest.
E.g. on Arm where the following XML leads to 4 file handles:
<serial type='file'>
<source path='/var/lib/nova/instances/7c0dcd78-.../console.log'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<console type='file'>
<source path='/var/lib/nova/instances/7c0dcd78-.../console.log'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
With that in mind and the target to support 4k guests by default we
should raise the limit to 16k.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
QEMU identified a race condition between the device state serialization
and the end of storage migration. Both QEMU and libvirt needs to be
updated to fix this.
Our migration work flow is modified so that after starting the migration
we to wait for QEMU to enter "pre-switchover", "postcopy-active", or
"completed" state. Once there, we cancel all block jobs as usual. But if
QEMU is in "pre-switchover", we need to resume the migration afterwards
and wait again for the real end (either "postcopy-active" or
"completed" state).
Old QEMU will just enter either "postcopy-active" or "completed"
directly, which is still correctly handled even by new libvirt. The
"pre-switchover" state will only be entered if QEMU supports it and the
pause-before-switchover capability was enabled. Thus all combinations of
libvirt and QEMU will work, but only new QEMU with new libvirt will
avoid the race condition.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This new capability enables a pause before device state serialization so
that we can finish all block jobs without racing with the end of the
migration. The pause is indicated by "pre-switchover" state. Once we're
done QEMU enters "device" migration state.
This patch just defines the new capability and QEMU migration states and
their mapping to our job states.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
VirutalBox has a IVRDEServerInfo structure available that
gives the effective runtime port that the VM is using when it's
running. This is useful when the "TCP/Ports" VBox property was set to
port range (e.g. via autoport = "yes" or via VBoxManage) in which
case it would be impossible to get the "active" port otherwise.
Originally autoport in vbox driver was setting the port to default value
(3389) which caused multiple VM instances use the same port. Since
libvirt XML does not allow to set port ranges, this patch changes the
"autoport" behavior to set VBox's "TCP/Ports" property to an arbitrary
port range (3389-3689) to avoid that issue.
The VBOX_SESSION_OPEN/CLOSE macros are only called in
_vboxDomainSnapshotRestore and they are unflexible because:
* assume the caller will have variable named "data"
* can only create Write lock type
As per above, it's not that hard to simply use the VBOX API directly.
When starting a domain with managed save image, we try to restore it
first. If the image is corrupted, we silently unlink it and just
normally start the domain. At this point the domain has no managed save
image, yet we did not reset the hasManagedSave flag.
https://bugzilla.redhat.com/show_bug.cgi?id=1460962
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
One of the usecases of iohelper is to read from pipe and write
to file with O_DIRECT. As we read from pipe we can have partial
read and then we fail to write this data because output file
is open with O_DIRECT and buffer size is not aligned.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Instead of enumerating all states which need to be turned into
QEMU_DOMAIN_JOB_STATUS_FAILED (and failing to add all of them), it's
better to mention just the one which needs to be left alone.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Almost every failure in qemuMigrationRun while we are talking to QEMU
monitor results in a jump to exit_monitor label. The only exception is
removed by this patch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The "ret" variable is used for storing the return value of a function
and should not be used as a temporary variable.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Merge cancel and cancelPostCopy sections with the generic error section,
where we can easily decide whether canceling the ongoing migration is
required.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Let cleanup only do things common to both failure and success paths and
move error handling code inside the new "error" section.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Some code which was supposed to be executed only when migration
succeeded was buried inside the cleanup code.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
When adding a new job state it's useful to let the compiler complain
about places where we need to think about what to do with the new
state.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
We need to format alias even for inactive XMLs since that's the
way how users are going to identify their devices.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Since we will be allowing users to set device aliases and memory
devices are fragile when it comes to aliases we have to make sure
they won't change during migration. Other devices should be fine.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
They have to be unique within the domain. As usual, backwards
compatibility takes its price. In this particular situation we
have a device that is represented twice in a domain and so is its
alias.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If driver that is calling the parse supports user supplied
aliases, they can be parsed even for inactive XMLs. However, to
avoid any clashes with aliases that libvirt generates, the user
ones have to have "ua-" prefix.
Note, that some drivers don't have notion of device aliases at
all. Also, in order to support user supplied aliases some extra
checks need to be done (e.g. during hotplug). Therefore we can't
just enable this feature for all the drivers. Thus we need a flag
that drivers set to tell parsing code that they can handle user
supplied device aliases.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When assigning alias to a device we usually iterate over other
devices of its kind trying to find next index. We do this by
stripping down the prefix and then parsing number at the end,
Usually, if the prefix doesn't match the one we are expecting, we
just continue with next iteration. Except for couple of
functions: qemuGetNextChrDevIndex(),
qemuAssignDeviceRedirdevAlias() and qemuAssignDeviceShmemAlias().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Introduced by 6094d6ec7f.
Found by running libvirt-perl tests.
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The function virEventRegisterImpl() checks the attempt to replace the
registered events. But there is a duplicate variable inside the IF statement.
The variable 'removeHandleImpl' was wrongly repeated. One of them needs to be
replaced by 'removeTimeoutImpl'.
Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
The only remaining user of qemuMonitorGetMigrationCapability is our test
suite. Let's replace qemuMonitorGetMigrationCapability with
qemuMonitorGetMigrationCapabilities there and drop the unused function.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
All calls to qemuMonitorGetMigrationCapability in QEMU driver are
replaced with qemuMigrationCapsGet.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Each time we need to check whether a given migration capability is
supported by QEMU, we call query-migrate-capabilities QMP command and
lookup the capability in the returned list. Asking for the list of
supported capabilities once when we connect to QEMU and storing the
result in a bitmap is much better and we don't need to enter a monitor
just to check whether a migration capability is supported.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
The new function is called qemuProcessInitMonitor and it will enter/exit
the monitor so that the caller doesn't have to deal with this.
The goal of this patch is to simplify the code in qemuConnectMonitor
which would otherwise be a bit hairy after the following patch.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Rather than a forward linked list, let's use the virHashTable in
order to manage the objsName data.
Requires numerous changes from List to Object management similar to
many other drivers/vir*obj.c modules
Since the virStorageEncryptionPtr encryption; is a member of
_virStorageSource it really should be allowed to be a subelement
of the disk <source> for various disk formats:
Source{File|Dir|Block|Volume}
SourceProtocol{RBD|ISCSI|NBD|Gluster|Simple|HTTP}
NB: Simple includes sheepdog, ftp, ftps, tftp
That way we can set up to allow the <encryption> element to be
formatted within the disk source, but we still need to be wary
from whence the element was read - see keep track and when it
comes to format the data, ensure it's written in the correct place.
Modify the qemuxml2argvtest to add a parse failure when there is an
<encryption> as a child of <disk> *and* an <encryption> as a child
of <source>.
The virschematest will read the new test files and validate from a
RNG viewpoint things are fine.
Since the virStorageAuthDefPtr auth; is a member of _virStorageSource
it really should be allowed to be a subelement of the disk <source>
for the RBD and iSCSI prototcols. That way we can set up to allow
the <auth> element to be formatted within the disk source.
Since we've allowed the <auth> to be a child of <disk>, we'll need
to keep track of how it was read so that when writing out we'll know
whether to format as child of <disk> or <source>. For the argv2xml
parsing, let's format under <source> as a preference. Do not allow
<auth> to be both a child of <disk> and <source>.
Modify the qemuxml2argvtest to add a parse failure when there is an
<auth> as a child of <disk> *and* an <auth> as a child of <source>.
Add tests to validate that if the <auth> was found in <source>, then
the resulting xml2xml and xml2arg works just fine. The two new .args
file are exact copies of the non "-source" version of the file.
The virschematest will read the new test files and validate from a
RNG viewpoint things are fine
Update the virstoragefile, virstoragetest, and args2xml file to show
the "preference" to place <auth> as a child of <source>.
Since the encryption information can also be disk source specific
move it from qemuDomainDiskPrivate to qemuDomainStorageSourcePrivate
Since the last allocated element from qemuDomainDiskPrivate is
removed, that means we no longer need qemuDomainDiskPrivateDispose.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Since the secret information is really virStorageSource specific
piece of data, let's manage the privateData from there instead of
at the Disk level.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Add the object definition and helpers to store security-related private
data for virStorageSources.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Introduce the bare necessities to add privateData to _virStorageSource.
Signed-off-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
When commit id 'da86c6c22' added support for diskPriv->encinfo in
qemuDomainSecretDiskPrepare a change to qemuDomainSecretDiskDestroy
to was missed. Although qemuDomainDiskPrivateDispose probably would
do the trick.
Signed-off-by: John Ferlan <jferlan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1495511
When creating new /dev for domain ran in namespace we try to
preserve all sub-mounts of /dev. Well, not quite all. For
instance if /dev/foo/bar and /dev/foo are both mount points, only
/dev/foo needs preserving. /dev/foo/bar is preserved with it too.
Now, to identify such cases like this one STRPREFIX() is used.
That is not good enough. While it works for [/dev/foo/bar;
/dev/foo] case, it fails for [/dev/prefix; /dev/prefix2] where
the strings share the same prefix but are in fact two different
paths. The solution is to use STRSKIP().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This function is going to make decisions based on the features
set per each driver. For that we need the virDomainXMLOption
object.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Let's move all the virAsprintf()-s into separate functions for
better structure of the code. Later, when somebody wants to
generate a device alias, all they need is to expose the function.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We have a special function for assigning aliases to RNG devices.
Use that instead of plain virAsprintf().
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
It looks like the error message was copied from virsh, because
that's where we have @ctl. Nevertheless, it's @flags which is
invalid, not @ctl.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Back in the times of using 'pci_del', unplugging a device without
a PCI address was not wired up.
After completely removing support for qemu without QEMU_CAPS_DEVICE,
aliases are used to uniquely identify devices in all cases.
Remove the pointless validation of data that was already present
in the domain definition.
There are two more cases where we set an S390/CCW/PCI address
type based on the machine type.
Reuse qemuDomainEnsureVirtioAddress to reduce repetition.
Split out the common code responsible for reserving/assigning
PCI/CCW addresses for virtio disks into a helper function
for reuse by other virtio devices.
We pass the source.file to qemuCheckCCWS390AddressSupport for
the purpose of reporting an error message without actually checking
that the rng device is of type VIR_DOMAIN_RNG_BACKEND_RANDOM.
Change it to a hardcoded "rng" string, which also avoids
referring to the device by a host-side attribute.
There is one limitation for using this API, when the guest is started
with all actions set to "destroy" we put "-no-reboot" on the QEMU
command line. That cannot be changed while QEMU is running and
the QEMU process is always terminated no matter what is configured
for any action.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1460677
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
We need to send allowReboot in the migration cookie to ensure the same
behavior of the virDomainSetLifecycleAction() API on the destination.
Consider this scenario:
1. On the source the domain is started with:
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
2. User calls an API to set "destroy" for <on_reboot>:
<on_poweroff>destroy</on_poweroff>
<on_reboot>destroy</on_reboot>
<on_crash>destroy</on_crash>
3. The guest is migrated to a different host
4a. Without the allowReboot in the migration cookie the QEMU
process on destination would be started with -no-reboot
which would prevent using the virDomainSetLifecycleAction() API
for the rest of the guest lifetime.
4b. With the allowReboot in the migration cookie the QEMU process
on destination is started without -no-reboot like it was started
on the source host and the virDomainSetLifecycleAction() API
continues to work.
The following patch adds a QEMU implementation of the
virDomainSetLifecycleAction() API and that implementation disallows
using the API if all actions are set to "destroy" because we add
"-no-reboot" on the QEMU command line. Changing the lifecycle action
is in this case pointless because the QEMU process is always terminated.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This will be used later on in implementation of new API
virDomainSetLifecycleAction(). In order to use it, we need to store
the value in status XML to not lose the information if libvirtd is
restarted.
If some guest was started by old libvirt where it was not possible
to change the lifecycle action for running guest, we can safely
detect it based on the current actions from the status XML.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Extract the required data inside a function instead of passing it
all as arguments.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
There is no need to have two different enums where one has the same
values as the other one with some additions.
Currently for on_poweroff and on_reboot we allow only subset of actions
that are allowed for on_crash. This was covered in parse time using
two different enums. Now to make sure that we don't allow setting
actions that are not supported we need to check it while validating
domain config.
Reviewed-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Commit v3.8.0-95-gfd885a06a dropped nmodels parameter from several APIs
in src/cpu/cpu.h, but failed to update all callers.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
If we find ourselves in the situation that the 'add' uevent has been
fired earlier than the sysfs tree for a device was created, we should
use the best-effort approach and give kernel some predetermined amount
of time, thus waiting for the attributes to be ready rather than
discarding the device from our device list forever. If those don't appear
in the given time frame, we need to move on, since libvirt can't wait
indefinitely.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1463285
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Since we have a number of places where we workaround timing issues with
devices, attributes (files in general) not being available at the time
of processing them by calling usleep in a loop for a fixed number of
tries, we could as well have a utility function that would do that.
Therefore we won't have to duplicate this ugly workaround even more.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Adjust udevEventHandleThread to be a proper thread routine running in an
infinite loop handling devices. The handler thread pulls all available
data from the udev monitor and only then waits until a wakeup signal for
new incoming data has been emitted by udevEventHandleCallback.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
This patch splits udevEventHandleCallback in two (introduces
udevEventHandleThread) in order to be later able to refactor the latter
to actually become a normal thread which will wait some time for the
kernel to create the whole sysfs tree for a device as we cannot do that
in the event loop directly.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
udevSetupSystemDev only needs the udev data lock to be locked because of
calling udevGetDMIData which accesses some protected structure members,
but it can do that on its own just fine, no need to hold the lock the
whole time.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
The driver locks are unnecessary here, since currently the cleanup is
only called from the main daemon thread, so we can't race here. Moreover
@devs and @privateData are self-lockable objects, so no problem there
either.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Since there's going to be a worker thread which needs to have some data
protected by a lock, the whole code would just simply get unnecessary
complex, since two sets of locks would be necessary, driver lock (for
udev monitor and event handle) and a mutex protecting thread-local data.
Given the future thread will need to access the udev monitor socket as
well, why not protect everything with a single lock, even better, by
converting the driver's private data to a lockable object, we get the
automatic object disposal feature for free.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
We need to perform a sanity check on the udev monitor before every
use so that we know nothing has changed in the meantime. The reason for
moving the code to a separate helper is to enhance readability and shift
the focus on the important stuff within the udevEventHandleCallback
handler.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
Even though hal doesn't make use of it, the privileged flag is related
to the daemon/driver rather than the backend actually used.
While at it, get rid of some tab indentation in the driver state struct.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
There were a bunch of commentary blocks that were literally useless in
terms of describing what the code following them does, since most of
them were documenting "the obvious" or it just wouldn't help at all.
Signed-off-by: Erik Skultety <eskultet@redhat.com>
So we have a syntax-check rule to catch all tab indents but it naturally
can't catch tab spacing, i.e. as a delimiter. This patch is a result of
running 'vim -en +retab +wq'
(using tabstop=8 softtabstop=4 shiftwidth=4 expandtab) on each file from
a list generated by the following:
find . -regextype gnu-awk \
-regex ".*\.(rng|syms|html|s?[ch]|py|pl|php(\.code)?)(\.in)?" \
| xargs git grep -lP "\t"
Signed-off-by: Erik Skultety <eskultet@redhat.com>
When formatting an inactive or migratable XML we will need to suppress
backing chain members which were detected from the disk to keep
semantics straight. This means we need to record, whether a
virStorageSource originates from autodetection.
The file object is needed when formatting the command line, but it makes
nesting of the objects less easy for use with blockdev. Separate the
wrapping into the 'file' object into a helper used specifically for disk
sources in the old code path.
Move qemuFreeKeywords into qemu_parse_command.c as
qemuParseKeywordsFree and call it rather than inline code
in multiple places.
Signed-off-by: Kothapally Madhu Pavan <kmp@linux.vnet.ibm.com>
Even though only family and model are used for matching CPUID data with
CPU models from cpu_map.xml, stepping is used by x86DataFilterTSX which
is supposed to disable TSX on CPU models with broken TSX support. Thus
we need to start parsing stepping from QEMU to make sure we don't
disable TSX on CPUs which provide working TSX implementation. See the
following patch for a real world example of such CPU.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
If same boot order is specified twice (or more) in domain xml
we call free for uninitiaziled loadparm on cleanup in virDomainDeviceBootParseXML
and SIGABRT (or similar) as a result.
