IO error on channel means the system cannot talk to the block device. The problem<div>is in the block layer. Maybe a loose cable or a setup problem.</div><div>dmesg should show errors.</div><div class="gmail_extra"><br><br>
<div class="gmail_quote">On Fri, Nov 9, 2012 at 10:46 AM, Laurentiu Gosu <span dir="ltr"><<a href="mailto:lg@easic.ro" target="_blank">lg@easic.ro</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
Hi,<br>
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.<br>
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:<br>
<b>mount /mnt/ocfs2</b><b><br>
</b><b>mount.ocfs2: I/O error on channel while trying to determine
heartbeat information</b><b><br>
</b><b><br>
</b><b>fsck.ocfs2 /dev/mapper/volgr1-lvol0</b><b><br>
</b><b>fsck.ocfs2 1.6.3</b><b><br>
</b><b>fsck.ocfs2: I/O error on channel while initializing the DLM</b><b><br>
</b><b><br>
</b><b>fsck.ocfs2 -n /dev/mapper/volgr1-lvol0</b><b><br>
</b><b>fsck.ocfs2 1.6.3</b><b><br>
</b><b>Checking OCFS2 filesystem in /dev/mapper/volgr1-lvol0:</b><b><br>
</b><b> Label: SAN</b><b><br>
</b><b> UUID: B4CF8D4667AF43118F3324567B90A987</b><b><br>
</b><b> Number of blocks: 2901788672</b><b><br>
</b><b> Block size: 4096</b><b><br>
</b><b> Number of clusters: 45340448</b><b><br>
</b><b> Cluster size: 262144</b><b><br>
</b><b> Number of slots: 10</b><b><br>
</b><b><br>
</b><b>journal recovery: I/O error on channel while looking up the
journal inode for slot 0</b><b><br>
</b><b>fsck encountered unrecoverable errors while replaying the
journals and will not continue</b><br>
<br>
<br>
Can you give me some hints on how to debug the problem?<br>
<br>
Thank you,<br>
Laurentiu.<br>
</div>
<br>_______________________________________________<br>
Ocfs2-users mailing list<br>
<a href="mailto:Ocfs2-users@oss.oracle.com">Ocfs2-users@oss.oracle.com</a><br>
<a href="https://oss.oracle.com/mailman/listinfo/ocfs2-users" target="_blank">https://oss.oracle.com/mailman/listinfo/ocfs2-users</a><br></blockquote></div><br></div>