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[Qin Zhao <chaochin@xxxxxxxxx>]

*** This bug is a duplicate of bug 1270304 ***
    https://bugs.launchpad.net/bugs/1270304

It seem that the process who was operating VM disk file is

nova     14765 27141  0 Apr18 ?        00:01:18 /usr/libexec/qemu-kvm
-global virtio-blk-pci.scsi=off -nodefconfig -nodefaults -nographic
-machine accel=kvm:tcg -cpu host,+kvmclock -m 500 -no-reboot -kernel
/var/tmp/.guestfs-162/kernel.27141 -initrd
/var/tmp/.guestfs-162/initrd.27141 -device virtio-scsi-pci,id=scsi
-drive
file=/opt/stack/data/nova/instances/a68d47bb-9461-4dd8-b292-fb457d63b4be/disk,cache=none,format=qcow2,id=hd0,if=none
-device scsi-hd,drive=hd0 -drive
file=/var/tmp/.guestfs-162/root.27141,snapshot=on,id=appliance,if=none,cache=unsafe
-device scsi-hd,drive=appliance -device virtio-serial -serial stdio
-device sga -chardev
socket,path=/tmp/libguestfshcu3Dj/guestfsd.sock,id=channel0 -device
virtserialport,chardev=channel0,name=org.libguestfs.channel.0 -append
panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off
printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 TERM=xterm

So that this problem is very similar with

https://bugs.launchpad.net/nova/+bug/1243757
https://bugs.launchpad.net/nova/+bug/1270304

** This bug has been marked a duplicate of bug 1270304
   error in guestfs driver setup causes orphaned libguestfs processes

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https://bugs.launchpad.net/bugs/1297639

Title:
  [libvirt] resize-confirm fails using NFS share storage

Status in OpenStack Compute (Nova):
  Incomplete

Bug description:
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.6/site-packages/nova/virt/libvirt/driver.py", line 1019, in _cleanup_resize
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp     utils.execute('rm', '-rf', target, delay_on_retry=True, attempts=5)
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.6/site-packages/nova/utils.py", line 177, in execute
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp     return processutils.execute(*cmd, **kwargs)
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp   File "/usr/lib/python2.6/site-packages/nova/openstack/common/processutils.py", line 178, in execute
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp     cmd=' '.join(cmd))
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp ProcessExecutionError: Unexpected error while running command.
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp Command: rm -rf /opt/stack/data/nova/instances/3536a35f-bd16-45c9-8d2d-4a368c94f986_resize
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp Exit code: 1
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp Stdout: ''
  2014-03-20 16:48:43.013 4979 TRACE nova.openstack.common.rpc.amqp Stderr: "rm: cannot remove `/opt/stack/data/nova/instances/3536a35f-bd16-45c9-8d2d-4a368c94f986_resize/.nfs00000000018c000300000001': Device or resource busy\n"

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