11640 Commits

Author SHA1 Message Date
Peter Krempa
059103869e qemuMonitorJSONSetBlockIoThrottle: Switch to standard error reporting
Use qemuMonitorJSONCheckError instead of handcrafted error reporting.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:57:22 +02:00
Peter Krempa
2d57075cb6 qemuMonitorJSONSetBlockIoThrottle: Refactor cleanup
Switch to automatic memory freeing and remove the cleanup section.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:57:10 +02:00
Peter Krempa
9c3fdcdfec qemu: capabilties: Retire QEMU_CAPS_DRIVE_IOTUNE_* caps
They are no longer used as we now assume that all tuning caps are
present and in case some will be removed we'll need to use different
probing methods.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:56:33 +02:00
Peter Krempa
96ecc3e208 qemu: Always assume that qemu supports drive throttling
All currently supported qemu versions support all throttling
capabilities. It is unlikely that any of the fields will be removed in
the future and if it will we will need to do specific probing which is
possible via the 'throttle' object which is the replacement for the
legacy way to configure throttling.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:56:17 +02:00
Peter Krempa
fb5a246424 qemu: capabilities: Probe QEMU_CAPS_SMP_DIES from the QMP schema
The configurability of the number of dies in a CPU can be inferred from
the presence of the 'die-id' field in 'query-hotpluggable-cpus'.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:56:07 +02:00
Peter Krempa
067f44fd0b qemu: capabilities: Probe 'discard' and 'detect-zeroes' from 'blockdev-add'
Probing QEMU_CAPS_DRIVE_DISCARD and QEMU_CAPS_DRIVE_DETECT_ZEROES can be
replaced by looking into the QMP schema rather than looking at -drive
which isn't in use any more.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:55:56 +02:00
Peter Krempa
2a47d74758 qemu: capabilities: Rename QEMU_CAPS_CHARDEV_FD_PASS to QEMU_CAPS_CHARDEV_FD_PASS_COMMANDLINE
Make it more obvious that we care about passing FDs on the commandline
before startup of qemu, which is used to avoid startup monitor polling.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:54:46 +02:00
Peter Krempa
f64fc98506 qemu: capabilities: Probe 'reconnect', 'logfile' and 'append' from 'chardev-add'
QEMU_CAPS_CHARDEV_RECONNECT, QEMU_CAPS_CHARDEV_LOGFILE and
QEMU_CAPS_CHARDEV_FILE_APPEND can be probed from the appropriate fields
in 'chardev-add' probed via the QMP schema instead of the command line
parameters.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:09 +02:00
Peter Krempa
ef5f998a96 qemu: capabilities: Note that basing probing on 'query-command-line-options' should be avoided
Add a comment that will attempt to discourage adding new capabilities
based on 'query-command-line-options'.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:09 +02:00
Peter Krempa
42e7f6a35b scripts: group-qemu-caps: Add capability name as comment to capability string
Add a cross reference of the enum value name with the string
representation. This allows a quick cross-reference of the values
without having to open the header and implementation files separately.

To achieve this the checker code at first obtains a list of the
flags and cross-references them when checking the grouping in
syntax-check, thus we are guaranteed to stay in sync.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:09 +02:00
Peter Krempa
0a8e44bc9f virQEMUCapsQMPSchemaQueries: Group by queried object name
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:09 +02:00
Peter Krempa
3cb391b39c virQEMUCapsCommandLine: Group by commandline argument name alphabetically
Further commits will be refactoring and minimizing capabilities being
parsed from 'query-command-line-options'. Group the struct driving the
detection by argument name so it's easier to spot options belonging
together.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-18 09:37:08 +02:00
Ján Tomko
5590fbf8d6 Remove redundant labels
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Ján Tomko
2c426d2e30 Use g_auto for xmlFreeDoc everywhere
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Ján Tomko
5dae71ee8c Use g_auto for xmlXPathContext everywhere
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-08-17 18:27:13 +02:00
Pavel Hrdina
6cbb1865d8 qemu: implement support for Fibre Channel VMID
Based on kernel commit messages the interface is

    /sys/class/fc/fc_udev_device/appid_store

where we need to write the following string "$INODE:$APPID".

$INODE is the VM root cgroup inode in hexadecimal and $APPID is user
provided string that will be attached to each FC frame for the VM
within the cgroup identified by inode and has limit 128 bytes.

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-17 13:51:40 +02:00
Michal Privoznik
5c254bb541 conf: Store SCSI bus length in virDomainDef
Libvirt assumes that a SCSI bus can fit up to 8 devices
(including controller itself), except for so called wide bus
which can accommodate up to 16 devices (again, including
controller). This plays important role when computing 'drive'
address in virDomainDiskDefAssignAddress(). So far, the only
driver that enables wide SCSI bus is VMX. But with newer
releases, ESX is capable of "super wide" bus (64 devices).

We can blindly bump the limit in our code because then we would
compute address that's invalid for older ESX versions that we
still want to support.

Unfortunately, I haven't found a better place where to store this
than virDomainDef.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 14:22:38 +02:00
Michal Privoznik
4705edf6cc qemu: Open chardev logfile on behalf of QEMU
If the QEMU driver is configured to use the old "file" stdio
handler (meaning virtlogd is out of the picture) and a chardev
has a log file configured we rely on QEMU being able to create
the file itself. This may not be always possible (e.g. if the
logfile is set to a directory that QEMU process can't reach).
In such case we should create the file and just pass its FD to
QEMU.

We could do that unconditionally and just either pass FD from
virtlogd or the one we opened, because we bumped QEMU version
and are now requiring new enough QEMU. However, I'm keeping the
old style where logfile is appended on the cmd line for the tests
sake.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1989457
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 09:25:13 +02:00
Michal Privoznik
b5958b2863 qemuDomainOpenFile: Take @cfg instead of driver
Again, we don't need full driver, just its config.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 09:24:38 +02:00
Michal Privoznik
e0dcdaefe2 qemuDomainOpenFile: Take virDomainDef instead of virDomainObj
The function doesn't really need domain object, but domain
definition from which it takes seclabels.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Tested-by: Ján Tomko <jtomko@redhat.com>
2021-08-16 09:24:05 +02:00
Kristina Hanicova
878cbd0f6a qemu: save status xml after generating taint message
We didn't always save status xml after generating new taint message
which resulted in it being deleted in case of a libvirtd restart.
Some taint messages were preserved thanks to saving status xml
separately at the end of the calling functions. With this, every taint
message is saved, regardless of the calling functions.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1965589

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-12 10:34:35 +02:00
Peter Krempa
65b918432e qemuDomainUnshareNamespace: Use automatic memory clearing for string lists
'devMountsPath' and 'devMountsSavePath' are NULL terminated.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
1b3c391a55 qemuNamespaceMknodPaths: Remove 'ndevMountsPath'
'devMountsPath' can be converted to an auto-cleared stringlist and thus
asking for the number of entries is not necessary.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
b28cf6a44e qemuNamespacePrepareOneItem: Don't pass count of elements
The only caller is passing a NULL terminated string list as
'devMountsPath' thus we don't need to get the count of elements.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
0fcf40dc8b qemuNamespacePrepareOneItem: Restructure code to avoid temporary variables
The value of 'next' is copied into 'item.file' so we can move the update
to the 'next' pointer earlier and move the VIR_APPEND_ELEMENT call to
where we figure out that we need to append the value.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:01 +02:00
Peter Krempa
93a42f8507 qemu: domain: Store passthrough arguments in NULL-terminated string list
We always process the full list so there's no value in storing the count
separately.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
d1aa253730 qemu: domain: Store capability overrides in NULL-terminated string list
We always process the full list so there's no value in storing the count
separately.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
b7b8ea965b qemu: domain: Store passthrough environment variables in a struct
Previously they were stored in two separate arrays. This way it's
obvious when referencing the same one.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
8c85d51926 qemu: firmware: Store machine types as a NULL-terminated string list
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
2021-08-09 10:09:00 +02:00
Peter Krempa
a257668ede qemuProcessSetupHotpluggableVcpus: Use automatic memory freeing
'bootHotplug' can be auto-freed when terminating the function and moving
the declaration of 'vcpuprops' to the loop which uses it along with
automatic freeing allows us to simplify cleanup in certain cases.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
aa76e5d0a4 qemuDomainAttachDeviceConfig: Remove pointless assignment
'dev->data.rng' is NULLed by VIR_APPEND_ELEMENT

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
966ba852b7 qemuDomainUSBAddressAddHubs: Refactor cleanup
'hub' doesn't need to be freed any more because it's always consumed and
NULLed-out by VIR_APPEND element. This also makes the 'ret' variable
obsolete.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:26 +02:00
Peter Krempa
98f6f2081d util: alloc: Reimplement VIR_APPEND_ELEMENT using virAppendElement
Use virAppendElement instead of virInsertElementsN to implement
VIR_APPEND_ELEMENT which allows us to remove error handling as the
only relevant errors were removed when switching to aborting memory
allocation functions.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00
Peter Krempa
592517636f util: alloc: Reimplement VIR_APPEND_ELEMENT_COPY using virAppendElement
Use virAppendElement instead of virInsertElementsN to implement
VIR_APPEND_ELEMENT_COPY which allows us to remove error handling as the
only relevant errors were removed when switching to aborting memory
allocation functions.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-06 08:53:25 +02:00
Ján Tomko
ca43a5198a qemu: virtiofs: kill the whole process group
Send TERM/KILL to virtiofsd and its child processes too
and do not exit until they are all dead.

https://bugzilla.redhat.com/show_bug.cgi?id=1940276

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
2021-08-05 11:18:13 +02:00
Ján Tomko
ff7b8043b6 util: virPidFileForceCleanupPath: add group argument
Add a version of virPidFileForceCleanupPath that takes
a 'group' bool argument and propagate it all the way
down to virProcessKillPainfullyDelay.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-05 11:18:09 +02:00
Andrea Bolognani
f225ef2a04 qemu: Allow pcie-expander-bus for aarch64/virt guests
Starting with QEMU 6.0, this controller is enabled by default
on aarch64.

https://bugzilla.redhat.com/show_bug.cgi?id=1967187

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-04 09:58:14 +02:00
Kristina Hanicova
814a8aaeeb qemu_migration: check for interface type 'hostdev'
When we try to migrate vm, we check if it contains only devices
that are able to migrate. If a hostdev device is not able to
migrate we raise an error with <hostdev/>, but it can actually be
<interface/>, so we need to check if hostdev device was created
by us from interface and show the right error message.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1942315

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-08-03 16:07:53 +02:00
Luke Yue
8a7cfb10b8 conf: domain: Introduce and use virDomainObjGetMessages()
The test driver and qemu driver could share the same code in
virDomainGetMessages(), so extract it to a function.

Signed-off-by: Luke Yue <lukedyue@gmail.com>
Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
2021-08-03 14:22:08 +02:00
Ján Tomko
e0e72ce8bc qemu: monitor: remove destroy callback
It was added by commit c2121602 and later removed by 5a4c2374a

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
2021-08-02 17:08:01 +02:00
Peter Krempa
dc0b9c8376 qemu: block: Pass discard requests through the copy-on-read block filter
We need to pass the 'trim' requests through the copy-on-read filter so
if a user configures a discard policy on the disk the requests get
through to the appropriate format layer in the blockdev tree.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1986509
Reported-by: Richard W.M. Jones <rjones@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Richard W.M. Jones <rjones@redhat.com>
2021-07-28 15:18:18 +02:00
Yang Fei
f513297bd4 qemu: Introduce qemuDomainGetStatsCpuHaltPollTime
This function add halt polling time interface in domstats. So that
we can use command 'virsh domstats VM' to get the data if system
support.

Signed-off-by: Yang Fei <yangfei85@huawei.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
2021-07-27 10:29:25 +02:00
Peter Krempa
b04e1fddf7 qemu: capabilities: Enable detection of QEMU_CAPS_BLOCKDEV_REOPEN
Base it on the presence of the "blockdev-reopen" QMP command.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-07-26 20:25:23 +02:00
Peter Krempa
4ea9df4dad qemumonitorjsontest: Add test case for 'blockdev-reopen'
Export 'qemuBlockReopenFormatMon' and use it in a new test case wich
will validate the arguments against the QMP schema.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-07-26 20:25:22 +02:00
Peter Krempa
c1d17ca64b qemuBlockReopenFormatMon: Adapt to new argument format of 'blockdev-reopen'
This function was added prior 'blockdev-reopen' being stable and qemu
changed the arguments to actually contain an array of block node
definitions to reopen.

In our case we are just changing between read-only and read-write modes
and thus we can keep operating on the nodes one-by-one.

Modify the code to add the wrapper array.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-07-26 20:25:22 +02:00
Peter Krempa
6f5980ee39 qemuBlockReopenFormat: Extract @src handling and monitor invocation
This will simplify testing of the blockdev-reopen code once it's
enabled.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
2021-07-26 20:25:22 +02:00
Cole Robinson
d81ac24014 qemu_vhost_user: don't raise error for unknown features
Similar to what was done for qemu_firmware.c in 61d95a1073, don't
report an error for unknown vhost-user features, just log it and
correctly continue on

Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Signed-off-by: Cole Robinson <crobinso@redhat.com>
2021-07-26 10:01:59 -04:00
Peter Krempa
3a95187289 qemuDomainObjPrivateAlloc: Fix unlikely memory leak
Additional cleanup paths add the possibility of not freeing earlier
stuff. Add an AUTOPTR handler for qemuDomainObjPrivate and use it in
qemuDomainObjPrivateAlloc

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Tim Wiederhake <twiederh@redhat.com>
2021-07-26 13:27:30 +02:00
Peter Krempa
e908a8e0e2 qemu: domain: Move qemuDomainObjPrivateAlloc after qemuDomainObjPrivateFree
The freeing function will be needed to undo failures in allocation.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Tim Wiederhake <twiederh@redhat.com>
2021-07-26 13:27:30 +02:00
Peter Krempa
5a661107ab qemuBlockNodeNameGetBackingChain: Shuffle around variable initialization
Allocate the hash tables first so tat the 'data' struct can be directly
initialized removing the need for a memset and two additional
assignments.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Tim Wiederhake <twiederh@redhat.com>
2021-07-26 13:27:30 +02:00