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The value we use internally to represent the lack of a memory
locking limit, VIR_DOMAIN_MEMORY_PARAM_UNLIMITED, doesn't
match the value setrlimit() and prlimit() use for the same
purpose, RLIM_INFINITY, so we have to handle the translation
ourselves.
Partially-resolves: https://bugzilla.redhat.com/1431793
For guests that use <memoryBacking><locked>, our only option
is to remove the memory locking limit altogether.
Partially-resolves: https://bugzilla.redhat.com/1431793
Instead of having a separate function, we can simply return
zero from the existing qemuDomainGetMemLockLimitBytes() to
signal the caller that the memory locking limit doesn't need
to be set for the guest.
Having a single function instead of two makes it less likely
that we will use the wrong value, which is exactly what
happened when we started applying the limit that was meant
for VFIO-using guests to <memoryBacking><locked>-using
guests.
This reverts commit c2e60ad0e5.
Turns out this check is excessively strict: there are ways
other than <memtune><hard_limit> to raise the memory locking
limit for QEMU processes, one prominent example being
tweaking /etc/security/limits.conf.
Partially-resolves: https://bugzilla.redhat.com/1431793
Commits 29f7b5ea6a and 5edf9aaf54 pushed them incorrectly at the end of
the file in the bug fixes section for libvirt 2.5.0.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
When reading release notes, patch summary is not always the best
description of what users can expect in new version. I propose
changing it slightly so that it describes what exactly happens and
when.
However, we do not have to add every single code change to the news
file, that would be ridiculous and unreadable for users. If the patch
subject needs changes like this one, I'm rather tempted to say that
such changes should not be in the news file at all. So that would be
the other way how to fix this.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
The mock, as well as the test, is only available on Linux. So skip
building it everywhere else, especially when it fails on mingw.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
If if_indextoname is not defined, the whole function using it should
not be defined either. Add stub to fix build on mingw.
Caused by 5dd607059d
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Creating a copy of the definition we want to add in a migration cookie
makes the code cleaner and less prone to memory leaks or double free
errors.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1398087
Clean up the virsh man page description for --pool-create-as in order
to better describe how the various arguments are used when creating
(or defining) a logical pool.
Also modify the storage pool XML parsing algorithm to check for the
mismatched "name" and "source-name".
Move the --print-xml to the end of the qualifiers since it's not
properly positionally situated for both --pool-create-as and --pool-define-as
and could be miscontrued as being the 3rd positional argument.
While parsing if the storage source is not present, then a defaultFormat
was not set. This could lead to oddities such as seeing "unknown" format
in output for the "logical" pool even though the only format the pool could
support would be "lvm2".
This does "put a label" on other pool defaults as follows:
File System: FS_AUTO
Network File System: NETFS_AUTO
Disk: UNKNOWN
Each of which is the "0" value for their respective pools and thus
would be no "real" change.
QEMU allows for TSC frequency to be explicitly set to enable migration
with invtsc (migration fails if the destination QEMU cannot set the
exact same frequency used when starting the domain on the source host).
Libvirt already supports setting the TSC frequency in the XML using
<clock>
<timer name='tsc' frequency='1234567890'/>
</clock>
which will be transformed into
-cpu Model,tsc-frequency=1234567890
QEMU command line.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The frequency is documented and formatted as an attribute of the <timer>
element rather than a nested <frequency> element expected by the parser.
Luckily enough, timer frequency has not been used by any driver so far.
And users were not able to set it in the XML either.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
- Make virMediatedDeviceNew() stub args match its prototype
- Fix typo: virRerportError -> virReportError
- Move MDEV_SYSFS_DEVICES definition out of the #ifdef __linux__ block
so we don't have to stub virMediatedDeviceGetSysfsPath()
https://bugzilla.redhat.com/show_bug.cgi?id=1430679
As it turns out some file headers (e.g. ext4) may be larger/longer than
the 512 bytes of zeros being written prior to a pvcreate, so let's write
out 2048 bytes similar to how the pvcreate sources would peek at the first
4 sectors of the device.
Make sure there is at enough bytes on the device to clear before doing
doing the clear - just to be sure.
This adds a few validations to the devices listed for a hostdev network:
* devices must be listed by PCI address, not by netdev name
* listing a device by PCI address is valid only for hostdev networks, not
for other types of network (e.g. macvtap passthrough).
* each device in a hostdev pool must be an SR-IOV VF
Resolves: https://bugzilla.redhat.com/1004676
Previously, this function must've been called only on Linux in order
to fail gracefully. That lead to #ifdef mess in callers, so the
function was redesigned so it failed gracefully on non-existing
files. However that commit forgot to define the function outside the
__linux__ ifdef, it broke non-Linux builds.
Caused by c67e04e25f.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Matching the beginning of a path in syntax check does not work because
each path is enriched with a prefix of the source tree.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The test takes
x86-cpuid-Something-guest.xml CPU (the CPU libvirt would use for
host-model on a CPU described by x86_64-cpuid-Something.xml without
talking to QEMU about what it supports on the host)
and updates it according to CPUID data from QEMU:
x86_64-cpuid-Something-enabled.xml (reported as "feature-words"
property of the CPU device)
and
x86_64-cpuid-Something-disabled.xml (reported as "filtered-features"
property of the CPU device).
The result is compared to
x86_64-cpuid-Something-json.xml (the CPU libvirt would use as
host-model based on the reply from query-cpu-model-expansion).
The comparison is a bit tricky because the *-json.xml CPU contains fewer
disabled features. Only the features which are included in the base CPU
model, but listed as disabled in *.json will be disabled in *-json.xml.
The CPU computed by virCPUUpdateLive from the test data will list all
features present in the host's CPUID data and not enabled in *.json as
disabled. The cpuTestUpdateLiveCompare function checks that the computed
and expected sets of enabled features match.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
All CPU features which QEMU does not know about but libvirt knows them
(currently "cmt" is the only one) are implicitly disabled by QEMU and
should be present in x86_64-cpuid-*-disabled.xml.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Commit v3.1.0-26-gd60012b4e started filtering hle and rtm features from
broken Intel Haswell CPUs. QEMU implemented similar functionality and
thus it doesn't report rtm and hle features as enabled for Core i5-4670T
CPU anymore.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The new command can be used to generate test data for virCPUUpdateLive.
When "cpu-cpuid.py diff x86-cpuid-Something.json" is run, it reads raw
CPUID data stored in x86-cpuid-Something.xml and CPUID data from QEMU
stored in x86-cpuid-Something.json to produce two more CPUID files:
x86-cpuid-Something-enabled.xml and x86-cpuid-Something-disabled.xml.
- x86-cpuid-Something-enabled.xml will contain CPUID bits present in
x86-cpuid-Something.json (i.e., enabled by QEMU for the "host" CPU)
- x86-cpuid-Something-disabled.xml will contain all CPUID bits from
x86-cpuid-Something.xml which are not present in
x86-cpuid-Something.json (i.e., CPUID bits which the host CPU
supports, but QEMU does not enable them for the "host" CPU)
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The new script is going to be more general and the original
functionality can be requested by "cpu-cpuid.py convert".
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The public API flags are handled by the cpuBaselineXML wrapper. The
internal cpuBaseline API only needs to know whether it is supposed to
drop non-migratable features.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
