[Ocfs2-users] Huge Problem ocfs2

[Laurentiu Gosu]

Hi,
I'm using ocfs2 cluster in a production environment since almost 1 year. 
During this time i had to run a fsck.ocfs2 few months ago due to some 
errors but they were fixed.
Now i have a big problem: I'm not able to mount the volume on any of the 
nodes. I stopped all nodes except one. Some output bellow:
*mount /mnt/ocfs2**
**mount.ocfs2: I/O error on channel while trying to determine heartbeat 
information**
**
**fsck.ocfs2 /dev/mapper/volgr1-lvol0**
**fsck.ocfs2 1.6.3**
**fsck.ocfs2: I/O error on channel while initializing the DLM**
**
**fsck.ocfs2 -n /dev/mapper/volgr1-lvol0**
**fsck.ocfs2 1.6.3**
**Checking OCFS2 filesystem in /dev/mapper/volgr1-lvol0:**
**  Label:              SAN**
**  UUID:               B4CF8D4667AF43118F3324567B90A987**
**  Number of blocks:   2901788672**
**  Block size:         4096**
**  Number of clusters: 45340448**
**  Cluster size:       262144**
**  Number of slots:    10**
**
**journal recovery: I/O error on channel while looking up the journal 
inode for slot 0**
**fsck encountered unrecoverable errors while replaying the journals and 
will not continue*


Can you give me some hints on how to debug the problem?

Thank you,
Laurentiu.
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