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From: sles <1807073@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [Bug 1807073] Re: qemu-guest-agent stop work when fsfreeze
Date: Sun, 07 Apr 2019 08:17:32 -0000	[thread overview]
Message-ID: <155462505297.21252.8956715668662426160.malone@soybean.canonical.com> (raw)
In-Reply-To: 154406426264.32667.2616897072259419283.malonedeb@chaenomeles.canonical.com

Just got almost the same
Ubuntu 16.04 as guest on Centos 7 host,
all will latest updates.

Execute of
virsh qemu-agent-command inetgw2 '{"execute":"guest-fsfreeze-freeze"}'

failed with agent not available ( or something like this), but fsfreeze executed in OS
Apr  7 02:28:54 inetgw2 qemu-ga: info: guest-fsfreeze called

snapshot was created 
after this 
virsh qemu-agent-command inetgw2 '{"execute":"guest-fsfreeze-thaw"}'
failed too with agent not available

So Ubuntu 16.04 VM stuck in  freezed i/o state.
 qemu-guest-age 1:2.5+dfsg-5

Same version...

Thank you!

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https://bugs.launchpad.net/bugs/1807073

Title:
  qemu-guest-agent stop work when fsfreeze

Status in QEMU:
  New

Bug description:
  Create a live snapshot, we should first to fsfreeze the file system. We do have only one disk mounted to /:
  Filesystem      Size  Used Avail Use% Mounted on
  udev             48G     0   48G   0% /dev
  tmpfs           9.5G  8.7M  9.5G   1% /run
  /dev/vda1       485G  1.5G  484G   1% /
  tmpfs            48G     0   48G   0% /dev/shm
  tmpfs           5.0M     0  5.0M   0% /run/lock
  tmpfs            48G     0   48G   0% /sys/fs/cgroup
  tmpfs           9.5G     0  9.5G   0% /run/user/0

  snapshot action is OK, when we restore the snapshot, the file system became read-only, and syslog seems stop writing until we fsck /dev/vda1 and mount -o rw,remount /:
  Dec  5 00:39:16 systemd[1]: Started Session 180 of user root.
  Dec  5 00:45:05 qemu-ga: info: guest-fsfreeze called
  Dec  5 07:00:45 kernel: [  114.623823] EXT4-fs (vda1): re-mounted. Opts: (null)

  So after snapshoting, wo do fsthaw the file system,  maybe the qga
  dose not respond or stop work, this action dose not execute
  successfully and there is no log to show the status of qemu-guest-
  agent.

  Version:
  libvirt 1.2.17
  qemu 2.3.0
  qemu-guest-agent 2.5

To manage notifications about this bug go to:
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  reply	other threads:[~2019-04-07  8:25 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-06  2:44 [Qemu-devel] [Bug 1807073] [NEW] qemu-guest-agent stop work when fsfreeze Hongquan Zhu
2019-04-07  8:17 ` sles [this message]
2019-04-07  8:17   ` [Qemu-devel] [Bug 1807073] " sles
2019-04-07  8:23 ` sles
2019-04-07  8:23   ` sles
2019-04-08  5:16 ` Hongquan Zhu
2019-04-08  5:16   ` Hongquan Zhu
2020-06-09 21:20 ` Rene
2021-04-20  6:50 ` Thomas Huth
2021-06-20  4:17 ` Launchpad Bug Tracker
2021-08-09  9:43 ` Thomas Huth

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