qemu-nbd has been rewritten since 0.12.3. Closing.
** Changed in: qemu
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/583296
Title:
I/O errors with qemu-nbd/qcow2
Status in QEMU:
Fix Released
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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