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[Qemu-devel] [Bug 583296] Re: I/O errors with qemu-nbd/qcow2
From: |
David Weber |
Subject: |
[Qemu-devel] [Bug 583296] Re: I/O errors with qemu-nbd/qcow2 |
Date: |
Thu, 20 May 2010 12:15:28 -0000 |
I forgot: this is on Ubuntu 10.04, Qemu 0.12.3.
--
I/O errors with qemu-nbd/qcow2
https://bugs.launchpad.net/bugs/583296
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Status in QEMU: New
Bug description:
I tried to open a qcow2 file with qemu-nbd and backup the files in it. After
some coping I get lot of I/O errors in dmesg and the system hangs. One time I
got even a kernel panic (Of course on a productive Server ;-) )
How to reproduce:
1. Connect nbd to a qcow2 file, a virtual machine mustn't use this file:
qemu-nbd --connect=/dev/nbd0 /mnt/qcow/andromeda.qcow2
2. Read some data from /dev/nbd0p1
dd if=/dev/nbd0p1 of=/dev/null bs=1M
After a few Seconds till Minutes somethings crash's
Attached some dmesg logs
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