Add options for tuning segment offloading:
<driver>
<host csum='off' gso='off' tso4='off' tso6='off'
ecn='off' ufo='off'/>
<guest csum='off' tso4='off' tso6='off' ecn='off' ufo='off'/>
</driver>
which control the respective host_ and guest_ properties
of the virtio-net device.
In nodeGetFreePages, if startCell is given by '0',
and the max node number is '0' too. The for-loop
wouldn't be executed.
So convert it to while-loop.
Before:
> virsh freepages --cellno 0 --pagesize 4
error: internal error: no suitable info found
After:
> virsh freepages --cellno 0 --pagesize 4
4KiB: 472637
Signed-off-by: Jincheng Miao <jmiao@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
If you have a bridge network in running domain and libvirtd is restarted
the information about host bridge interface is lost from live xml.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1140085
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Request erroring out from the backing chain traveller and drop qemu's
internal backing chain integrity tester.
The backing chain traveller reports errors by itself with possibly more
detail than qemuDiskChainCheckBroken ever could.
We also need to make sure that we reconnect to existing qemu instances
even at the cost of losing the backing chain info (this really should be
stored in the XML rather than reloaded from disk, but that needs some
work).
Add a new parameter to virStorageFileGetMetadata that will break the
backing chain detection process and report useful error message rather
than having to use virStorageFileChainGetBroken.
This patch just introduces the option, usage will be provided
separately.
When libvirt-guests is configured to start guests on host
boot, it is possible for guests start and read the host
clock before it is synchronized. Services such as
libvirt-guests that require correct time should use the
Special Passive System Unit time-sync.target
http://www.freedesktop.org/software/systemd/man/systemd.special.html#time-sync.target
Now we have universal tunable event so we can use it for reporting
changes to user. The cputune values will be prefixed with "cputune" to
distinguish it from other tunable events.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This new event will use typedParameters to expose what has been actually
updated and the reason is that we can in the future extend any tunable
values or add new tunable values. With typedParameters we don't have to
worry about creating some other events, we will just use this universal
event to inform user about updates.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
In the function at one place we check if def->cpu is NULL prior
to accessing def->cpu->ncells. Then, later in the code,
def->cpu->ncells is accessed directly, without the check. This
makes coverity unhappy, because the first check makes it think
def->cpu can be NULL. However, the function is not called if
def->cpu is NULL. Therefore, remove the first check and hopefully
make coverity cheer again.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Cleanup virDomanDef structure from other nested structure and create
separate type definition for them.
Fix a typo in virDomainHugePage.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The unit of '--pagesize' of freepages is kibibytes.
https://bugzilla.redhat.com/show_bug.cgi?id=1145048
Signed-off-by: Jincheng Miao <jmiao@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
RDMA Live migration requires registering memory with the hardware, and
thus QEMU offers a new 'capability' to pre-register / mlock() the guest
memory in advance for higher RDMA performance before the migration
begins. This capability is disabled by default, which means QEMU will
register the memory with the hardware in an on-demand basis.
This patch exposes this capability with the following example usage:
virsh migrate --live --rdma-pin-all --migrateuri rdma://hostname domain qemu+ssh://hostname/system
Signed-off-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This patch adds support for RDMA protocol in migration URIs.
USAGE: $ virsh migrate --live --migrateuri rdma://hostname domain qemu+ssh://hostname/system
Since libvirt runs QEMU in a pretty restricted environment, several
files needs to be added to cgroup_device_acl (in qemu.conf) for QEMU to
be able to access the host's infiniband hardware. Full documenation of
the feature can be found on QEMU wiki:
http://wiki.qemu.org/Features/RDMALiveMigration
Signed-off-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Currently we only support TCP protocol for native QEMU migration but
this is going to be changed. Let's make the code more general and remove
hardcoded TCP protocol from several places.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
For compatibility with old libvirt we need to support both tcp:host and
tcp://host migration URIs. Let's make the code that parses them a bit
cleaner.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
RDMA migration uses the 'setup' state in QEMU to optionally lock
all memory before the migration starts. The total time spent in
this state is exposed as VIR_DOMAIN_JOB_SETUP_TIME.
Additionally, QEMU also exports migration throughput (mbps) for both
memory and disk, so let's add them too: VIR_DOMAIN_JOB_MEMORY_BPS,
VIR_DOMAIN_JOB_DISK_BPS.
Signed-off-by: Michael R. Hines <mrhines@us.ibm.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
commit 72f919f558 introduced an user
friendly error message when trying to use IDE disks as readonly.
Do the same thing for the SATA bus.
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1112939
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
For the tap backend the default is specified and the same should be
done for the vhost attribute.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Add a new parameter that will allow to return the XML stored in the save
image for further manipulation and adjust the callers. This option will
be used in later patches.
There is no need to acquire the driver-wide lock in
libxlDomainDefineXML. When switching to jobs in the libxl
driver, most driver-wide locks were removed. The locking here
was preserved since I mistakenly thought virDomainObjListAdd
needed protection. This is not the case, so remove the
unnecessary locking.
Commit id '9a2f36ec' added a build conditional of CAP_SYS_RAWIO
in order to determine whether or not a disk definition using rawio
should be allowed on platforms without CAP_SYS_RAWIO. If one was
found, virReportError was used but the code didn't goto cleanup.
This patch adds the goto.
We are not detecting the presence of FIPS from QEMU, but from procfs and
that means it's not QEMU capability. It was decided that we will pass
this flag to QEMU even if it's not supported by old QEMU binaries.
This patch also reverts changes done by commit a21cfb0f to
qemucapabilitestest and implements a new test case in qemuxml2argvtest.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1135431
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1141879
A long time ago I've implemented support for so called multiqueue
net. The idea was to let guest network traffic be processed by
multiple host CPUs and thus increasing performance. However, this
behavior is enabled by QEMU via special ioctl() iterated over the
all tap FDs passed in by libvirt. Unfortunately, SELinux comes in
and disallows the ioctl() call because the /dev/net/tun has label
system_u:object_r:tun_tap_device_t:s0 and 'attach_queue' ioctl()
is not allowed on tun_tap_device_t type. So after discussion with
a SELinux developer we've decided that the FDs passed to the QEMU
should be labelled with svirt_t type and SELinux policy will
allow the ioctl(). Therefore I've made a patch
(cf976d9dcf) that does exactly this. The patch
was fixed then by a443193139 and
b635b7a1af. However, things are not
that easy - even though the API to label FD is called
(fsetfilecon_raw) the underlying file is labelled too! So
effectively we are mangling /dev/net/tun label. Yes, that broke
dozen of other application from openvpn, or boxes, to qemu
running other domains.
The best solution would be if SELinux provides a way to label an
FD only, which could be then labeled when passed to the qemu.
However that's a long path to go and we should fix this
regression AQAP. So I went to talk to the SELinux developer again
and we agreed on temporary solution that:
1) All the three patches are reverted
2) SELinux temporarily allows 'attach_queue' on the
tun_tap_device_t
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
- docs/formatstorage.html.in: document 'zfs' pool type, add it
to a list of pool types that could use source physical devices
- docs/storage.html.in: update a ZFS pool example XML with
source physical devices, mention that starting from 1.2.9 a
pool could be created from this devices by libvirt and in earlier
versions user still has to create a pool manually
- docs/drvbhyve.html.in: add an example with ZFS pools
- Provide an implementation for buildPool and deletePool operations
for the ZFS storage backend.
- Add VIR_STORAGE_POOL_SOURCE_DEVICE flag to ZFS pool poolOptions
as now we can specify devices to build pool from
- storagepool.rng: add an optional 'sourceinfodev' to 'sourcezfs' and
add an optional 'target' to 'poolzfs' entity
- Add a couple of tests to storagepoolxml2xmltest
