Libvirt prints an error on startup when it is missing host cpu model
information for any queried qemu binary. On s390 we only have host cpu model
information for kvm enabled qemu instances. So when virt type is not kvm, this
is actually not an error on s390.
This patch adds virt type as a parameter to virQEMUCapsInitCPUModelS390, and a
new return code 2 for virQEMUCapsInitCPUModel and virQEMUCapsInitCPUModelS390.
If the virt type is not kvm then we skip printing the scary error message
and return 2 because this case is actually expected behavior. The new return
code is meant to differentiate between the failure case and the case where we
simply expect the cpu model information to be unattainable.
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Move the setup of the disk attribute to the disk source prepare function
which will allow proper usage with JSON props and move the fallback
(legacy) generating code into the block which is executed with legacy
options.
As a side-effect of this change we can clean up propagation of 'cfg'
into the command generator.
Also it's nice to see that the test output is the same even when the
value is generated in a different place.
The 'file.password-secret' injection should be used only if we are using
the old formatter. When formatting the source string from the JSON
properties, the property should be added there.
Also drop the comment which refers to stuff that will not be used in
libvirt since -blockdev is the way to go.
Qemu has now an internal mechanism for locking images to fix specific
cases of disk corruption. This requires libvirt to mark the image as
shared so that qemu lifts certain restrictions.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1378242
'share-rw' for the disk device configures qemu to allow concurrent
access to the backing storage.
The capability is checked in various supported disk frontend buses since
it does not make sense to partially backport it.
Creating a snapshot would introduce a possibly unsupported member for
sharing into the backing chain. Add a check to prevent that from
happening.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1511480
Disk sharing between two VMs may corrupt the images if the format driver
does not support it. Check that the user declared use of a supported
storage format when they want to share the disk.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1511480
Storage source format backing a shared device (e.g. running a cluster
filesystem) needs to support the sharing so that metadata are not
corrupted. Add a central function for checking this.
Since we already have such support for libxl all we need is qemu
driver adjustment. And a test case.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This capability says if qemu is capable of specifying distances
between NUMA nodes on the command line. Unfortunately, there's no
real way to check this and thus we have to go with version check.
QEMU introduced this in 0f203430dd8 (and friend) which was
released in 2.10.0.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
When QEMU dies, we read its output stored in a log file and use it for
reporting a hopefully useful error. However, virReportError will trim
the message to (VIR_ERROR_MAX_LENGTH - 1) characters, which means the
end of the log (which likely contains the error message we want to
report) may get lost. We should trim the beginning of the log instead.
https://bugzilla.redhat.com/show_bug.cgi?id=1335534
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
When reading QEMU log for reporting it as an error message, we want to
skip "char device redirected to" line. However, this string is not
printed at the beginning of a line, which means STRPREFIX will never
find it.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Historically we've formatted a lot of the attributes of a disk (disk
geometry, etc) with -drive. Since we use -device now, they should be
formatted there. Extract them to a separate function for keeping
compatibility with SDcards which still use only -drive.
Start this by moving the geometry into a separate function.
When doing block commit we need to allow write for members of the
backing chain so that we can commit the data into them.
qemuDomainDiskChainElementPrepare was used for this which since commit
786d8d91b4 calls qemuDomainNamespaceSetupDisk which has very adverse
side-effects, namely it relabels the nodes to the same label it has in
the main namespace. This was messing up permissions for the commit
operation since its touching various parts of a single backing chain.
Since we are are actually not introducing new images at that point add a
flag for qemuDomainDiskChainElementPrepare which will refrain from
calling to the namespace setup function.
Calls from qemuDomainSnapshotCreateSingleDiskActive and
qemuDomainBlockCopyCommon do introduce new members all calls from
qemuDomainBlockCommit do not, so the calls are anotated accordingly.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1506072
https://bugzilla.redhat.com/show_bug.cgi?id=1434451
Just like in 9324f67a57 we need to put default sata alias
(which is hardcoded to "ide", obvious, right?) onto the command
line instead of the one provided by user.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This function only queries domain @def. It doesn't change it.
Therefore it should take const pointer.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
The compiler can warn us if we add a value to the
virDomainChrSerialTargetType enumeration but forget to handle
it properly in the code. Let's take advantage of that.
This commit is best viewed with 'git diff -w'.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Add a separate capability for the sclplmconsole device, and check it
specifically instead of using QEMU_CAPS_DEVICE_SCLPCONSOLE for that too.
Signed-off-by: Pino Toscano <ptoscano@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Give a better name to the capability for the sclpconsole device.
Signed-off-by: Pino Toscano <ptoscano@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Up until now we assumed the spapr-vty device would always be
present, which is not very nice. Check for its availability before
using it instead.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Starting from qemu 2.11, the `-device vmcoreinfo` will create a fw_cfg
entry for a guest to store dump details, necessary to process kernel
dump with KASLR enabled and providing additional kernel details.
In essence, it is similar to -fw_cfg name=etc/vmcoreinfo,file=X but in
this case it is not backed by a file, but collected by QEMU itself.
Since the device is a singleton and shouldn't use additional hardware
resources, it is presented as a <feature> element in the libvirt
domain XML.
The device is arm/x86 only for now (targets that support fw_cfg+dma).
Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1395248
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Truncate the output so that it is only as big as is needed to fit all
the bits, not all the units from the map. This will be needed in the
future in order to properly format bitmaps for kernel's sysfs files.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This follows the virBitmapToData() function and, similarly to
virBitmapNewData(), we'll be able to have virBitmapNewString() later
on without name confusion.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
This is similar to the virDomainQemuMonitorCommand API, it can change
the domain state in a way that libvirt may not understand.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Most of the time it's okay to leave this up to negotiation between
the guest and the host, but in some situations it can be useful to
manually decide the behavior, especially to enforce its availability.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1308743
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: John Ferlan <jferlan@redhat.com>
Setup everything related to disks in one place rather than calling in
from various places.
The change to ordering of the setup steps is necessary since secrets
need the master key to be present.
In some cases it does not make sense to pursue that the private data
will be allocated (especially when we don't need to put anything in it).
Ensure that the code works without it.
This also fixes few crashes pointed out in
https://bugzilla.redhat.com/show_bug.cgi?id=1510323
If creation of the main JSON object containing the storage portion of a
virStorageSource would fail but we'd allocate the server structure we'd
leak it. Found by coverity.
