[Linux-cluster] Buffer I/O error on device diapered_dm-2

[Sebastian Walter]

Dear list,

I get the following errors on my CentOS 4.5/Dell/Xeon Cluster with
Infortrend/QLogic fiber channel SAN:

Sep 17 11:24:21 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340454
Sep 17 11:24:38 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340455
Sep 17 11:24:56 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340456
Sep 17 11:25:14 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340457
Sep 17 11:25:32 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340458
Sep 17 11:25:49 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340459
Sep 17 11:26:07 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340460
Sep 17 11:26:25 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340461
Sep 17 11:26:42 dtm kernel: Buffer I/O error on device diapered_dm-2,
logical block 128340462
Sep 17 11:27:39 dtm clurgmgrd: [4713]: <err> clusterfs:gfs-dtm-home:
Mount point is not accessible!

Then the filesystem is not mountable on this node anymore (it's set up
using rgmanager to mount the gfs). On the other nodes, there are no
problems. How can I debug this if it's dependant on the hardware or
something is wrong in the filesystem?

Thanks, regards
Sebastian