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[Qemu-discuss] Hibernate and qemu-nbd

From: Mark Trumpold
Subject: [Qemu-discuss] Hibernate and qemu-nbd
Date: Fri, 13 Sep 2013 07:07:01 -0700
User-agent: Microsoft-MacOutlook/

Hello all,

I have been using 'qemu-nbd' and 'qemu-img' for some time to provide
loop filesystems in my environment.

Recently I have been experimenting with hibernating (suspend to disk)
the physical host on which I have qemu running.

I am using the kernel functionality directly with the commands:
    echo platform >/sys/power/disk
    echo disk >/sys/power/state

The following appears in dmesg when I attempt to hibernate:

[   38.881397] nbd (pid 1473: qemu-nbd) got signal 0
[   38.881401] block nbd0: shutting down socket
[   38.881404] block nbd0: Receive control failed (result -4)
[   38.881417] block nbd0: queue cleared
[   87.463133] block nbd0: Attempted send on closed socket
[   87.463137] end_request: I/O error, dev nbd0, sector 66824

My environment:
  Debian: 6.0.5
  Kernel: 3.3.1
  Qemu userspace: 1.2.0

Thanks in advance for any thoughts on this one.

Mark Trumpold

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