[Ocfs2-users] Huge Problem ocfs2

[Sunil Mushran]

IO error on channel means the system cannot talk to the block device. The
problem
is in the block layer. Maybe a loose cable or a setup problem.
dmesg should show errors.


On Fri, Nov 9, 2012 at 10:46 AM, Laurentiu Gosu <lg at easic.ro> wrote:

>  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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