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 <l...@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. > > _______________________________________________ > Ocfs2-users mailing list > Ocfs2-users@oss.oracle.com > https://oss.oracle.com/mailman/listinfo/ocfs2-users >
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