Re: [libvirt-users] Unsafe migration with copy-storage-all (non shared storage) and writeback cache

On Fri, Feb 17, 2017 at 12:33:28 +0100, Gionatan Danti wrote: > Hi list, > I would like to understand if, and why, the --unsafe flag is needed when > using --copy-storage-all when migrating guests which uses writeback > cache mode. > > Background: I want to live migrate guests with writeback

Re: [libvirt-users] Determining domain job kind from job stats?

On Fri, Feb 17, 2017 at 12:38:24 +0100, Milan Zamazal wrote: > Jiri Denemark writes: > > > On Fri, Feb 10, 2017 at 21:50:19 +0100, Milan Zamazal wrote: > >> Hi, is there a reliable way to find out to what kind of job does the > >> information returned from

Re: [libvirt-users] Why Guest does not retain Host CPU flags

On Fri, Feb 17, 2017 at 11:23:54 +0530, akhilesh rawat wrote: > ok thanks , but then can we know which all list of feature are supported by > QEMU/KVM release. > http://www.linux-kvm.org/page/KVM_Features This page is not really about CPU features. It's not so easy to tell whether a given CPU

[libvirt-users] "virsh list" hangs

`virsh list` hangs on my server that hosts a bunch of VMs. This might be due to the Debian upgrade I did on Feb 15, which upgrades `libvirt` from 2.4.0-1 to 3.0.0-2. I have tried restarting libvirtd for a few times, without luck. Attached below are some relevant logs; let me know if you need

[libvirt-users] "virsh list" ahngs

`virsh list` hangs on my server that hosts a bunch of VMs. This might be due to the Debian upgrade I did on Feb 15, which upgrades `libvirt` from 2.4.0-1 to 3.0.0-2. I have tried restarting libvirtd for a few times, without luck. Attached below are some relevant logs; let me know if you need

[libvirt-users] vm running slowly in powerful host

Hi, i have a vm which has a poor performance. E.g. top needs seconds to refresh its output on the console. Same with netstat. The guest is hosting a MySQL DB with a webfrontend, its response is poor too. I'm looking for the culprit. Following top in the guest i get these hints: Memory is free

[libvirt-users] Libvirt behavior when mixing io=native and cache=writeback

Hi all, I write about libvirt inconsistent behavior when mixing io=native and cache=writeback. This post can be regarded as an extension, or clarification request, of BZ 1086704 (https://bugzilla.redhat.com/show_bug.cgi?id=1086704) On a fully upgraded CentOS6 x86-64 machine, starting a guest

Re: [libvirt-users] Determining domain job kind from job stats?

Jiri Denemark writes: > On Fri, Feb 10, 2017 at 21:50:19 +0100, Milan Zamazal wrote: >> Hi, is there a reliable way to find out to what kind of job does the >> information returned from virDomainGetJobStats or provided in >> VIR_DOMAIN_EVENT_ID_JOB_COMPLETED event callback

[libvirt-users] Unsafe migration with copy-storage-all (non shared storage) and writeback cache

Hi list, I would like to understand if, and why, the --unsafe flag is needed when using --copy-storage-all when migrating guests which uses writeback cache mode. Background: I want to live migrate guests with writeback cache from host A to host B and these hosts only have local storage (ie: