The APPEND macro is now be usable for any type.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NMichal 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: NMichal Privoznik <mprivozn@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=1458630

Apparantly commit id 'dc4c2f75' wasn't specific enough, so here's
a few more clarifications.

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.

Create a shim that will allow other backends to make use of qemu-img
functionality to create or possibly modify the volume.

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: NJohn 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 inline the various free's and return NULL, just create
an error label.

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: NChristian 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: NMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: NBjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: NJiri 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: NChristian Ehrhardt <christian.ehrhardt@canonical.com>

When adding CPU usability blockers I forgot to properly free them when
in virDomainCapsCPUModelsDispose.
Reported-by: NMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NPavel 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: NChristian 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: NChristian 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: NJiri 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: NJiri Denemark <jdenemar@redhat.com>

Signed-off-by: NJiri 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=1460962Signed-off-by: NJiri 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: NJiri 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn 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: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=1434451

This way users can uniquely identify devices at define time.
Signed-off-by: NMichal Privoznik <mprivozn@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: NMichal 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: NMichal 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: NMichal Privoznik <mprivozn@redhat.com>