I've been trying to reproduce this but managed to do so only once.
However, I can reproduce a similar error with a different scenario and
now have the feeling it is some sort of timing issue. Here's what I do:
root@styx:~# killall sheep
root@styx:~# sheep /sheep
root@styx:~# collie vdi list
name id size used shared creation time vdi id
------------------------------------------------------------------
failed to read a inode header 1131155, 0, 42
failed to read a inode header 2701199, 0, 42
failed to read a inode header 13864185, 0, 42
But then the next time I repeat the list command (after say one second)
it works fine:
root@styx:~# collie vdi list
name id size used shared creation time vdi id
------------------------------------------------------------------
deb01 1 8.0 GB 136 MB 0.0 MB 2011-05-23 20:38 114293
xxx 1 5.0 GB 0.0 MB 0.0 MB 2011-05-23 20:37 29378f
Does this make any sense ? Hopefully you can reproduce this. I am using
a git checkout from yesterday and
currently testing with a 2 node setup (copies=2), on an ext4 filesystem
on both nodes with user_xattr flag. sheep.log does not show anything
except for an "accepted" and "closed" message when I do the list command.
Thanks !
On 05/23/2011 11:13 AM, MORITA Kazutaka wrote:
At Sun, 22 May 2011 13:38:19 +0200,
krimson wrote:
Just ran into another issue, if I abort this operation:
qemu-img convert /dev/vmvg/ub01 sheepdog:ub01
this seems to result in corruption:
# collie vdi list
name id size used shared creation time vdi id
------------------------------------------------------------------
failed to read a inode header 2701199, 0, 2
failed to read a inode header 10955677, 0, 2
failed to read a inode header 13864185, 0, 2
I have to collie cluster format before I can use the store again.
In my environment, this problem couldn't happen. How many physical
machines do you use for Sheepdog? What is the number of redundancy?
Does this problem happen always? Does the sheep.log contain any error
messages?
Thanks,
Kazutaka
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