Management software wants to be able to allocate disk space on demand.
To support this they need keep track of the space occupation of the
block device. This information is reported by qemu as part of block
stats.
This patch extend the block information in the bulk stats with the
allocation information.
To keep the same behaviour a helper is extracted from
qemuMonitorJSONGetBlockExtent in order to get per-device allocation
information.
Signed-off-by: Francesco Romani <fromani@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
While our code gathers block stats via "query-blockstats" some
information need to be gathered via "query-block". Add a helper function
that will update the blockstats structure if requested.
This removes the artificial and unnecessary restriction that
virDomainSetMaxDowntime() only be called while a migration is in
progress.
https://bugzilla.redhat.com/show_bug.cgi?id=1146618
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The current block stats code matched up the disk name with the actual
stats by the order in the data returned from qemu. This unfortunately
isn't right as qemu may return the disks in any order. Fix this by
returning a hash of stats and index them by the disk alias.
Commit fba6bc4 introduced the non-migratable invtsc feature,
breaking save/migration with host-model and host-passthrough.
On hosts with this feature present it was automatically included
in the CPU definition, regardless of QEMU support.
Commit de0aeaf stopped including it by default for host-model,
but failed to fix host-passthrough.
This commit ignores checking of CPU features with host-passthrough,
since we don't pass them to QEMU (only -cpu host is passed),
allowing domains using host-passthrough that were saved with
the broken version of libvirtd to be restored.
https://bugzilla.redhat.com/show_bug.cgi?id=1147584
For the new VIR_DOMAIN_EVENT_ID_TUNABLE event we have a bunch of
constants added
VIR_DOMAIN_EVENT_CPUTUNE_<blah>
VIR_DOMAIN_EVENT_BLKDEVIOTUNE_<blah>
This naming convention is bad for two reasons
- There is no common prefix unique for the events to both
relate them, and distinguish them from other event
constants
- The values associated with the constants were chosen
to match the names used with virConnectGetAllDomainStats
so having EVENT in the constant name is not applicable in
that respect
This patch proposes renaming the constants to
VIR_DOMAIN_TUNABLE_CPU_<blah>
VIR_DOMAIN_TUNABLE_BLKDEV_<blah>
ie, given them a common VIR_DOMAIN_TUNABLE prefix.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
On a domain startup, the variable store path is generated if needed.
The path is intended to be generated only once. However, the updated
domain definition is not saved into config dir rather than state XML
only. So later, whenever the domain is destroyed and the daemon is
restarted, the generated path is forgotten and the file may be left
behind on virDomainUndefine() call.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Since 363e9a68 we track backing chain metadata when creating snapshots
the right way even for the inactive configuration. As we did not yet
update other code paths that modify the backing chain (blockpull) the
newDef backing chain gets out of sync.
After stopping of a VM the new definition gets copied to the next start
one. The new VM then has incorrect backing chain info. This patch
switches the backing chain detector to always purge the existing backing
chain and forces re-detection to avoid this issue until we'll have full
backing chain tracking support.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1144922
Use the universal tunable event to report changes to user. All
blkdeviotune values are prefixed with "blkdeviotune".
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
When you updated some blkdeviotune values for running domain the values
were stored only internally, but not saved into the live XML so they
won't survive restarting the libvirtd.
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.
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>
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>
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 72f919f558902968bd0cf9f99f25ac62cbfe3ac6 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>
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.
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>
If the qemu being used doesn't support JSON, then querying for IOThread
data would fail. In that case, ensure the *iothreads is NULL and return 0
as the count of iothreads available.
Currently, build with clang fails with:
CC qemu/libvirt_driver_qemu_impl_la-qemu_command.lo
qemu/qemu_command.c:6580:58: error: implicit conversion from enumeration type
'virMemAccess' to different enumeration type 'virTristateSwitch'
[-Werror,-Wenum-conversion]
virTristateSwitch memAccess = def->cpu->cells[i].memAccess;
~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~^~~~~~~~~
1 error generated.
Fix that by using virMemAccess instead of virTristateSwitch.
Commit f05b6a91 added virQEMUDriverConfigPtr argument to the
virQEMUCapsFillDomainCaps function and it uses forward declaration
of virQEMUDriverConfig and virQEMUDriverConfigPtr that casues clang
build to fail:
gmake[3]: Entering directory `/usr/home/novel/code/libvirt/src'
CC qemu/libvirt_driver_qemu_impl_la-qemu_capabilities.lo
In file included from qemu/qemu_capabilities.c:43:
In file included from qemu/qemu_hostdev.h:27:
qemu/qemu_conf.h:63:37: error: redefinition of typedef 'virQEMUDriverConfig'
is a C11 feature [-Werror,-Wtypedef-redefinition]
typedef struct _virQEMUDriverConfig virQEMUDriverConfig;
^
qemu/qemu_capabilities.h:328:37: note: previous definition is here
typedef struct _virQEMUDriverConfig virQEMUDriverConfig;
^
Fix that by passing loader and nloader config attributes directly
instead of passing complete config.
Commit f36a94f introduced a double free on all success paths
in qemuSharedDeviceEntryInsert.
Only call qemuSharedDeviceEntryFree on the error path and
set entry to NULL before jumping there if the entry already
is in the hash table.
https://bugzilla.redhat.com/show_bug.cgi?id=1142722
Clean up all _virDomainMemoryStat.
Signed-off-by: James <james.wangyufei@huawei.com>
Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Clean up all _virDomainBlockStats.
Signed-off-by: James <james.wangyufei@huawei.com>
Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Clean up all _virDomainInterfaceStats.
Signed-off-by: Wang Yufei <james.wangyufei@huawei.com>
Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
