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You have been subscribed to a public bug by Seyeong Kim (xtrusia):

[Impact]

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

This is affected to Xenial

[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

** Affects: libvirt (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: sts
-- 
virsh api is stuck when vm is down with NFS borken
https://bugs.launchpad.net/bugs/1746630
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