Because we are polling we may detect some errors after we asked QEMU for
migration status even though they occurred before. If this happens and
QEMU reports migration completed successfully, we would happily report
the migration succeeded even though we should have cancelled it because
of the other error.
In practise it is not a big issue now but it will become a much bigger
issue once the check for storage migration status is moved inside the
loop in qemuMigrationWaitForCompletion.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The wrapper is useful for calling qemuBlockJobEventProcess with the
event details stored in disk's privateData, which is the most likely
usage of qemuBlockJobEventProcess.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1203032
Implement a `migrate_disks' parameters for the QEMU driver. This multi-
value parameter can be used to explicitly specify what block devices
are to be migrated using the NBD server. Tunnelled migration using NBD
is to be done.
Signed-off-by: Pavel Boldin <pboldin@mirantis.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
When playing with disk migration lately, I've noticed this warning in
domain logs:
WARNING: Image format was not specified for 'nbd://masina:49153/drive-virtio-disk0' and probing guessed raw.
Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted.
Specify the 'raw' format explicitly to remove the restrictions.
So I started digging into qemu source code to see what has triggered
the warning. I'd expect qemu to know formats of guest's disks since we
tell them on command line. This lead me to qmp_drive_mirror() where
the following can be found:
if (!has_format) {
format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
}
So, format is automatically initialized from the disk iff mode !=
"existing". Unfortunately, in migration we are tied to use this mode
(NBD doesn't support creating new images). Therefore the only way to
avoid this warning is to pass format. The discussion on the mail-list [1]
resulted in the code that always forces NBD export as "raw" format.
[1] https://www.redhat.com/archives/libvir-list/2015-June/msg00153.html
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Pavel Boldin <pboldin@mirantis.com>
This function is returning a string (domain XML). Since d3ce7363
when it was first introduced, it was indented incorrectly:
static char
*qemuMigrationBeginPhase(..)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If virDomainObjGetDefs used in qemuDomainPinIOThread would fail the code
would jump to the 'cleanup' label after acquiring the job, thus the VM
would be locked forever.
Introduced in commit cac6d639.
The privileged flag will not change while the configuration might
change. Make the 'privileged' flag member of the driver again and mark
it immutable. Should that ever change add an accessor that will group
reads of the state.
When hotplugging a memory device, there wasn't a check to determine
if there is a conflict with the address space being used by the to
be added memory device and any existing device which is disallowed by qemu.
This patch adds a check to ensure the new device address doesn't
conflict with any existing device.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1220527
This type of information defines attributes of a system
baseboard. With one exception: board type is yet not implemented
in qemu so it's not introduced here either.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Some machine types are only reported as canonical names for other
machine types, which make it a bit harder to find what machine types are
supported by a specific QEMU binary. Ideally, one would just use
/capabilities/guest/arch[@name='...']/machine/text() XPath to get a list
of all supported machine types, but it doesn't work right now.
For example, we report
<machine canonical='pc-i440fx-2.3' maxCpus='255'>pc</machine>
in guest capabilities, but the corresponding
<machine maxCpus='255'>pc-i440fx-2.3</machine>
is missing.
This is a result of QMP probing. With "-machine ?" parsing QEMU sends
us two lines:
pc Standard PC (i440FX + PIIX, 1996) (alias of pc-i440fx-2.3)
pc-i440fx-2.3 Standard PC (i440FX + PIIX, 1996) (default)
while query-machines QMP command reports both in the same entry:
{"name": "pc-i440fx-2.3", "is-default": true, "cpu-max": 255, "alias": "pc"}
Let's make sure we always report separate <machine/> for both the
canonical name and its alias and using the canonical name as the default
machine type (i.e., inserting it before its alias) in case is-default is
true.
https://bugzilla.redhat.com/show_bug.cgi?id=1229666
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The search for the memory balloon driver object is extended by a
second known name "virtio-balloon-ccw" in support for virtio-ccw.
Signed-off-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: Daniel Hansel <daniel.hansel@linux.vnet.ibm.com>
Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Stefan Zimmermann <stzi@linux.vnet.ibm.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1021480
Seems the property has been deprecated for qemu, although seemingly ignored.
This patch enforces from a libvirt perspective that a scsi-block 'lun'
device should not provide the 'serial' property.
If a guest has multiple network devices with the same MAC address,
when we online update the second device, libvirtd always updates
the first one.
commit def31e4c forgot to fix the online updating scenario. We need to
use virDomainNetFindIdx() to find the correct network device.
Signed-off-by: Zhou Yimin <zhouyimin@huawei.com>
Signed-off-by: Zhang Bo <oscar.zhangbo@huawei.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1228007
When attaching a scsi volume lun via the attach-device --config or
--persistent options, there was no translation of the source pool
like there was for the live path, thus the attempt to modify the config
would fail since not enough was known about the disk.
With a few exceptions, we assume that qemu binary for given
architecture has form of qemu-system-$arch. Well, openrisc is yet
another exception. It's binary is called qemu-system-or32.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Move all the system_* fields into a separate struct. Not only this
simplifies the code a bit it also helps us to identify whether BIOS
info is present. We don't have to check all the four variables for
being not-NULL, but we can just check the pointer to the struct.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Move all the bios_* fields into a separate struct. Not only this
simplifies the code a bit it also helps us to identify whether BIOS
info is present. We don't have to check all the four variables for
being not-NULL, but we can just check the pointer to the struct.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This patch adds the support of queues attribute of the driver element
for vhost-user interface type. Example:
<interface type='vhostuser'>
<mac address='52:54:00:ee:96:6d'/>
<source type='unix' path='/tmp/vhost2.sock' mode='client'/>
<model type='virtio'/>
<driver queues='4'/>
</interface>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1207692
Signed-off-by: Maxime Leroy <maxime.leroy@6wind.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
The support for this was added in QEMU with commit
830d70db692e374b55555f4407f96a1ceefdcc97. Unfortunately we have to do
another ugly version-based capability check. The other option would be
not to check for the capability at all and leave that to qemu as it's
done with multiqueue tap devices.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
By default, getaddrinfo() will return addresses for both
IPv4 and IPv6 if both protocols are enabled, and so the
RPC code will listen/connect to both protocols too. There
may be cases where it is desirable to restrict this to
just one of the two protocols, so add an 'int family'
parameter to all the TCP related APIs.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
qemu 2.3.0 added the -cpu host,aarch64=off option, which allows using
qemu-system-aarch64 KVM to run armv7l VMs.
Add a capabilities check for it, wire it up in qemu_command, and test
the command line generation.
When traversing through the QOM tree, we're looking for
a link to a device, e.g.:
link<virtio-balloon-pci>
Introduce a helper that will format the link name at the start,
instead of doing it every time while recursing through the tree.
In qemuDomainUpdateCurrentMemorySize I misplaced the actual update of
the balloon size to a place where it may not be initialized. Move it a
few lines above.
