Adjust the config code so that it does not enforce that target memory
node is specified. To avoid breakage, adjust the qemu memory hotplug
config checker to disallow such config for now.
Since we already make sure before that the domain configuration is
valid we may execute it always at the cost of doing 0 iterations of the
for loop.
This patch will simplify later refactor as it will avoid whitespace
changes.
Make the function usable so that -1 can be passed to it as cell ID so
that we can later enable memory hotplug on non-NUMA guests for certain
architectures.
Logging current async job while in BeginJob is useful, but the async job
we want to start is even more interesting.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
The previous commit
commit 4e8993a250
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Mon Nov 9 16:20:08 2015 +0000
qemu: assume various QEMU 0.10 features are always available
Added broken handling of -sdl. Instead of duplicating existing
SDL handling code, just ensure it is invoked in the right
scenarios.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The -sdl and -net ...name=XXX arguments were both introduced
in QEMU 0.10, so the QEMU driver can assume they are always
available.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
As of QEMU 0.10.0 the -vga argument was introduced, so the
QEMU driver can assume it is always available.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
As of QEMU 0.10.0 the -drive format= parameter was added,
so the QEMU driver can assume it is always available.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
As of QEMU 0.10.0, the -drive cache option stopped using
the on/off value names, so the QEMU driver can assume
use of the new value names.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Since we require QEMU 0.12.0, we can assume that QEMU supports
all of the fd, tcp, unix and exec migration protocols.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
We have twice previously attempted to remove Xenner
support
commit de9be0ab4d
Author: Daniel P. Berrange <berrange@redhat.com>
Date: Wed Aug 22 17:29:01 2012 +0100
Remove xenner support
commit 92572c3d71
Author: Ján Tomko <jtomko@redhat.com>
Date: Wed Feb 18 16:33:50 2015 +0100
Remove code handling the QEMU_CAPS_DOMID capability
This change really does remove the last traces of it
in the capabilities handling code
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
As of QEMU 0.9.1 the -drive argument can be used to configure
all disks, so the QEMU driver can assume it is always available
and drop support for -hda/-cdrom/etc.
Many of the tests need updating because a great many were
running without CAPS_DRIVE set, so using the -hda legacy
syntax.
Fixing the tests uncovered a bug in the argv -> xml
convertor which failed to handle disk with if=floppy.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The QEMU argv -> virDomainDef conversion code was not handling
-drive arguments using the floppy bus. This caused them to be
added as hard disks instead.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The -no-reboot arg was added in QEMU 0.9.0, so the QEMU driver
can now assume it is always present.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
As of QEMU 0.11.0 the 'info chardev' monitor command can be
used to report on allocated chardev paths, so we can drop
support for parsing QEMU stderr to locate the PTY paths.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
As of QEMU 0.9.0 the -vnc option accepts a ':' to separate port
from listen address, so the QEMU driver can assume that support
for listen addresses is always available.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
The kQEMU accelerator was deleted in QEMU 0.12, so we no
longer need to support it in the QEMU driver.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Check the QEMU version and refuse to work with QEMU versions
older than 0.12.0. This is approximately the vintage of QEMU
that is available in RHEL-6 era distros.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If mlock is required either due to use of VFIO hostdevs or due to the
fact that it's enabled it needs to be tweaked prior to adding new memory
or after removing a module. Add a helper to determine when it's
necessary and reuse it both on hotplug and hotunplug.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1273491
The code reported that a migration flag is unsupported but didn't jump
to the error label. Probably an oversight in commit f88af9dc that
introduced the flag checking.
Since the flag was not enabled when 'eating' the migration cookie,
libvirt reported a bogus error when memory hotplug was enabled:
unsupported migration cookie feature memory-hotplug
The error was ignored though due to a bug in the code so it slipped
through testing.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1278404
nodeset should be freed in both success and failure paths.
While tmppath is freed immediately after it's consumed, moving it from
error to cleanup label is a bit more consistent and robust.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Generally, we use "ret" variable for storing the value we are going to
return at the and of a function, but this is not the case in
qemuProcessStart. Let's rename "ret" as "rv".
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
qemuProcessStart was passing char * migrateFrom as the third argument to
qemuPrepareNVRAM. We should explicitly convert the pointer to bool which
is what the function expects.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1270715
Commit id '9deb96f' removed the code to fetch the nodeset from the
CpusetMems cgroup for a running vm in favor of using the return from
virDomainNumatuneFormatNodeset introduced by commit id '43b67f2e7'.
However, that API will return the value of the passed 'auto_nodeset'
when placement is VIR_DOMAIN_NUMATUNE_PLACEMENT_AUTO, which happens
to be NULL.
Since commit id 'c74d58ad' started using priv->autoNodeset in order
to manage the auto placement value during qemuProcessStart, it should
be passed along in order to return the correct value if the domain
requests the auto placement.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
In commit f41be296, we moved vm->persistent check into
qemuDomainRemoveInactive, but we didn't change the vm->persistent
before call qemuDomainRemoveInactive in some place before and just
call it to remove the inactive vm.
Signed-off-by: Luyao Huang <lhuang@redhat.com>
This calls the PCI-, USB- and SCSI-specific functions just
like qemuHostdev{Prepare,ReAttach}DomainDevices() already do,
and was the missing piece for the qemuHostdev API to nicely
mirror the virHostdev API.
Update qemuProcessReconnect() to use the new function.
Adopt the same names used for virHostdevUpdateActive*Devices() for
consistency's sake and to make it easier to jump between the two.
No functional changes.
Adopt the same names used for virHostdevReAttach*Devices() for
consistency's sake and to make it easier to jump between the two.
No functional changes.
We have macros for both positive and negative string matching.
Therefore there is no need to use !STREQ or !STRNEQ. At the same
time as we are dropping this, new syntax-check rule is
introduced to make sure we won't introduce it again.
Signed-off-by: Ishmanpreet Kaur Khera <khera.ishman@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Tunnelled migration can hang if the destination qemu exits despite all the
ABI checks. This happens whenever the destination qemu exits before the
complete transfer is noticed by source qemu. The savevm state checks at
runtime can fail at destination and cause qemu to error out.
The source qemu cant notice it as the EPIPE is not propogated to it.
The qemuMigrationIOFunc() notices the stream being broken from virStreamSend()
and it cleans up the stream alone. The qemuMigrationWaitForCompletion() would
never get to 100% transfer completion.
The qemuMigrationWaitForCompletion() never breaks out as well since
the ssh connection to destination is healthy, and the source qemu also thinks
the migration is ongoing as the Fd to which it transfers, is never
closed or broken. So, the migration will hang forever. Even Ctrl-C on the
virsh migrate wouldn't be honoured. Close the source side FD when there is
an error in the stream. That way, the source qemu updates itself and
qemuMigrationWaitForCompletion() notices the failure.
Close the FD for all kinds of errors to be sure. The error message is not
copied for EPIPE so that the destination error is copied instead later.
Note:
Reproducible with repeated migrations between Power hosts running in different
subcores-per-core modes.
Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1249981
When qemuDomainPinIOThread was added in commit id 'fb562614', a check
for the IOThread capability was not needed since a check for iothreadpids
covered the condition where the support for IOThreads was not present.
The iothreadpids array was only created if qemuProcessDetectIOThreadPIDs
was able to query the monitor for IOThreads. It would only do that if
the QEMU_CAPS_OBJECT_IOTHREAD capability was set.
However, when iothreadids were added in commit id '8d4614a5' and the
check for iothreadpids was replaced by a search through the iothreadids[]
array for the matching iothread_id that left open the possibility that
an iothreadids[] array was defined, but the entries essentially pointed
to elements with only the 'iothread_id' defined leaving the 'thread_id'
value of 0 and eventually the cpumap entry of NULL.
This was because, the original IOThreads commit id '72edaae7' only
checked if IOThreads were defined and if the emulator had the IOThreads
capability, then IOThread objects were added at startup. The "capability
failure" check was only done when a disk was assigned to an IOThread in
qemuCheckIOThreads. This was because the initial implementation had no way
to dynamically add IOThreads, but it was possible to dynamically add a
disk to the domain. So the decision was if the domain supported it, then
add the IOThread objects. Then if a disk with an IOThread defined was
added, it could check the capability and fail to add if not there. This
just meant the 'iothreads' value was essentially ignored.
Eventually commit id 'a27ed6e7' allowed for the dynamic addition and
deletion of IOThread objects. So it was no longer necessary to generate
IOThread objects to dynamically attach a disk to. However, the startup
and disk check code was not modified to reflect this.
This patch will move the capability failure check to when IOThread
objects are being added to the command line. Thus a domain that has
IOThreads defined will not be started if the emulator doesn't support
the capability. This means when qemuCheckIOThreads is called to add
a disk, it's no longer necessary to check the capability. Instead the
code can use the IOThreadFind call to indicate that the IOThread
doesn't exist.
Finally because it could be possible to have a domain running with the
iothreadids[] defined prior to this change if libvirtd is restarted each
having mostly empty elements, qemuProcessDetectIOThreadPIDs will check
if there are niothreadids when the QEMU_CAPS_OBJECT_IOTHREAD capability
check fails and remove the elements and array if it exists.
With these changes in place, it turns out the cputune-numatune test
was failing because the right bit wasn't set in the test. So used the
opportunity to fix that and create a test that would expect to fail
with some sort of iothreads defined and used, but not having the
correct capability.
Although theoretically both should be the same value, the niothreadids
should be used in favor of iothreads when performing comparisons. This
leaves the iothreads as a purely numeric value to be saved in the config
file. The one exception to the rule is virDomainIOThreadIDDefArrayInit
where the iothreadids are being generated from the iothreads count since
iothreadids were added after initial iothreads support.
