[Lustre-discuss] bad superblocks

Michael Di Domenico mdidomenico4 at gmail.com
Thu Sep 30 13:07:01 PDT 2010

Had a hard power failure this morning on the whole building.  Now when
I attempt to mount the metadata partition I get

VFS: Can't find ldiskfs filesystem on dev md22.
LustreError: 6570:0:(obd_mount.c:1278:server_kernel_mount()) premount
/dev/md22:0x0 ldiskfs failed: -22, ldiskfs2 failed: -19
LustreError: 6570:0:(obd_mount.c:1592:server_fill_super()) Unable to
mount device /dev/md22: -22
LustreError: 6570:0:(obd_mount.c:1997:lustre_fill_super()) Unable to mount (-22)

This feels a bit like an uh-oh moment.  Any suggestions?

e2fsck the partition fails, complains of a bad superblock.  I tried to
dump out the superblocks, but that failed also, (though I'm not sure i
did it right)

The system is RedHat v5.3 x86_64 with lustre and e2fsprog 1.41.6


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