drive-mirror is doing lseek on source image before starting, and this can take a lot of time for big nfs volume
during this time, qmp socket is hanging
http://lists.nongnu.org/archive/html/qemu-devel/2015-05/msg01838.html
so we need to setup a big timeout
qemu devs are currently working to fix this
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
Since qemu 2.2, a new "ready" flag has been added to blockjob
http://git.qemu.org/?p=qemu.git;a=commit;h=ef6dbf1e46ebd1d41ab669df5bba0bbdec6bd374
to known if we can complete it.
we can't use len==offset to known if all block are mirrored, because behaviour will change soon in qemu 2.3
http://git.qemu.org/?p=qemu.git;a=commit;h=b21c76529d55bf7bb02ac736b312f5f8bf033ea2
"block/mirror: Improve progress report
Instead of taking the total length of the block device as the block
job's length, use the number of dirty sectors. The progress is now the
number of sectors mirrored to the target block device. Note that this
may result in the job's length increasing during operation, which is
however in fact desirable.
"
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
It is better to check if a VM is running in QemuServer then in Storage.
for the Storage there is no difference if it is running or not.
Signed-off-by: Wolfgang Link <w.link@proxmox.com>
Currently qemu auto fallback to aio=threads if cache=none|directsync
It's better to handle that correctly
see:
https://bugzilla.redhat.com/show_bug.cgi?id=1086704http://wiki.qemu.org/ChangeLog/2.3
Future incompatible changes:
Block device parameter aio=native has no effect without cache.direct=on. It will be made an error.
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
we need to remove scsi controller, because live migration will crash,
as on migration target node, we'll start the vm without controller if no disk exist
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
pci bridge are not hot-unplugglable,
which can give us live migration problem,
if we hot-unplug a device on pcibridge 1 or 2, we don't create the pci bridge on target guest
and pci bridge hotplug is not working on all os (windows for example).
So it's better to always add them at startup.
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
It wasn't working with 2.6.32,
now that 3.10 kernel is the default, we can enable it.
It's help to be sure that all cpu flags are supported by host && qemu,
to be sure that nothing break
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
Paravirtualized End-of-Interrupt Indication (PV-EOI)
Hosts and guests require two VM exits (context switches from a VM to a Hypervisor) for each interrupt:
one to inject the interrupt, and another to signal the end of the interrupt.
With pv_eoi , they can negotiate a paravirtualized end-of-interrupt feature and only require one switch per interrupt.
Number of exits is reduced by half for interrupt-intensive workloads,
such as incoming network traffic with a virtio network device.
This leads to significant reduction in host CPU utilization for such workloads.
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This sub compare current machine type to a specific version,
and return 1 if machinetype is bigger or equal to version
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
we always need to enable pooling interval, because it doesn't seem to be setup with -machine option
Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
this will check, if it is possibel to rollback a snapshot befor VM will shutdown and get locked.
Signed-off-by: Wolfgang Link <w.link@proxmox.com>
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
