Re: [libvirt-users] Problem with the use of domfsfreeze mountpoint option

----- Original Message ----- | From: "Eric Blake" <eblake(a)redhat.com&gt; | To: "Payes Anand" <payes.anand(a)cloudbyte.com&gt;, libvirt-users(a)redhat.com | Sent: Wednesday, November 12, 2014 5:51:12 AM | Subject: Re: [libvirt-users] Problem with the use of domfsfreeze mountpoint | option | On 11/11/2014 01:58 PM, Payes Anand wrote: | > Hi everybody, | > | > I am having a problem with the use of domfsfreeze command. | > | > It is freezing all the filesystems present on the domain, | > | > instead of freezing just the mountpoints provided. | > | > I am issuing the command-- | > | > # virsh domfsfreeze <domain> --mountpoint <mountpoint> | > | > Output was-- Froze 3 filesystem(s) | > | > | > I want to freeze a particular mount point on the VM, so that i can | > take a snapshot using my own snapshot feature. | > | > Using library: libvirt 1.2.5 | > Using API: QEMU 1.2.5 | > Running hypervisor: QEMU 2.0.0 | What version of qemu-guest-agent is running in the guest? | qemu-guest-agent doesn't support per-mountpoint freezing until the | introduction of guest-fsfreeze-freeze-list in qemu 2.2 (still unreleased). | > | > --Upgraded libvirt to 1.2.10, but that also didn't solve the problem. | > | > Am i missing something over here? | > Any help would be greatly appreciated. | I wonder if you may have uncovered a libvirt bug. If the guest agent is | not capable of supporting per-mount freezing (because the agent is too | old), the command should fail rather than blindly freezing everything. | But to know for sure, it would be good to find the log messages for the | actual agent commands issued by libvirt, to make sure we were actually | trying to freeze just a single mount point. On RHEL, the bug for adding FSFreeze function is this one : https://bugzilla.redhat.com/show_bug.cgi?id=1102457 And according commnet 10 in that bug, --mountpoint is not supported now. Whether you specify --mountpoing or not, it will always output Froze 2 filesystem(s) or Thawed 2 filesystem(s) | -- | Eric Blake eblake redhat com +1-919-301-3266 | Libvirt virtualization library http://libvirt.org | _______________________________________________ | libvirt-users mailing list | libvirt-users(a)redhat.com | https://www.redhat.com/mailman/listinfo/libvirt-users -- Regards shyu