[root]# mount /data mount: wrong fs type, bad option, bad superblock on /dev/md2, missing codepage or other error In some cases useful info is found in syslog - try dmesg | tail or so
[root]# dmesg | tail SCSI device sdk: 1953525168 512-byte hdwr sectors (1000205 MB) sdk: Write Protect is off sdk: Mode Sense: 00 3a 00 00 SCSI device sdk: drive cache: write back md: syncing RAID array md2 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. md: using 128k window, over a total of 976759936 blocks. EXT3-fs error (device md2): ext3_check_descriptors: Block bitmap for group 3968 not in group (block 834142208)! EXT3-fs: group descriptors corrupted!
