[Bug 1746630] Re: virsh api is stuck when vm is down with NFS broken

[Brian Murray]

Hello Seyeong, or anyone else affected,

Accepted libvirt into xenial-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/libvirt/1.3.1-1ubuntu10.18 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-xenial to verification-done-xenial. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-xenial. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: libvirt (Ubuntu Xenial)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-xenial

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https://bugs.launchpad.net/bugs/1746630

Title:
  virsh api is stuck when vm is down with NFS broken

Status in Ubuntu Cloud Archive:
  New
Status in libvirt:
  Fix Released
Status in libvirt package in Ubuntu:
  Fix Released
Status in libvirt source package in Xenial:
  Fix Committed

Bug description:
  [Impact]

  virsh command is hang if there is broken VM on broken NFS

  This is affected to Xenial, UCA-Mitaka

  [Test Case]

  1. deploy VM with NFS storage ( running )
  2. block NFS via iptables
  - iptables -A OUTPUT -d NFS_SERVER_IP -p tcp --dport 2049 -j DROP ( on host machine )
  3. virsh blkdeviotune generic hda => hang
  4. virsh domstats => hang
  5. virsh list => lang

  [Regression]
  After patch, we can command domstats and list with short timeout. and libvirt-bin needs to be restarted. so if there are many VMs it will be affected short time while it is restarting.

  [Others]

  This bug is fixed in redhat bug report[1] and mailing list[2] and git
  commit[3][4][5]

  and it is merged 1.3.5 upstream

  https://libvirt.org/git/?p=libvirt.git;a=blobdiff;f=docs/news.html.in;h=1ad8337f5f8443b5ac76450dc3370f95c51503fd;hp=d035f6833fb5eaaced8f5a7010872f3e61b6955b;hb=7324444bc70dcc3e2d1fe0baa640712efb99e273;hpb=d57e73d06fe5901ac4ab9c025b3531251292b509

  [1] https://bugzilla.redhat.com/show_bug.cgi?id=1337073
  [2] https://www.redhat.com/archives/libvir-list/2016-May/msg01353.html
  [3] https://libvirt.org/git/?p=libvirt.git;a=commit;h=5d2b0e6f12b4e57d75ed1047ab1c36443b7a54b3
  [4] https://libvirt.org/git/?p=libvirt.git;a=commit;h=3aa5d51a9530a8737ca584b393c29297dd9bbc37
  [5] https://libvirt.org/git/?p=libvirt.git;a=commit;h=71d2c172edb997bae1e883b2e1bafa97d9f953a1

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