[OpenAFS] CopyOnWrite failed - orphaned files

[Marco Foglia]

Hello,

we are having continuous troubles with CopyOnWrite failures on a linux
file server and as a result orphaned files. We have tried several setups
a
nd even changed hardware but it is still there. The current setup is 
redhat-6.2 with 2.2.19-6.2.12smp and Openafs 1.2.2. 

It only happens after a full backup (vos dump <volume>.backup -time 0)
of
a backup volume. You can find the following message in the file server
log file:

CopyOnWrite failed: volume 536872685 in partition /vicepa  (tried
reading 8192, read 0, wrote 0, errno 4) volume needs salvage

Does anybody have the same problems? Solutions? 

Thanks,
Marco