On Sun, Oct 06, 2002 at 12:16:37PM +0200, Louis-David Mitterrand wrote: > - "mdadm /dev/md1 --add /dev/sda2" starts OK, says 15 minutes to go, > when at 25% rebuild suddenly it stops with "md_do_sync() caught > signal, exiting" Following up to myself. Could bad blocks on one of the raid5 partition disk have caused this problem? I just found out that /dev/sdb has 4 four badblocks, the following messages appearing in the syslog during the "badblocks /dev/sdb" command: Oct 10 08:51:12 uruk kernel: scsi0: ERROR on channel 0, id 1, lun 0, CDB: Read ( 10) 00 01 20 ba 30 00 00 c4 00 Oct 10 08:51:12 uruk kernel: Info fld=0x120ba48, Current sd08:10: sense key Medium Error Oct 10 08:51:12 uruk kernel: Additional sense indicates Read retries exhausted Oct 10 08:51:12 uruk kernel: I/O error: dev 08:10, sector 18922056 So I tried a "scsiformat /dev/sdb" and now the disks seems to have no more bad blocks. Can a low-level format fix badblocks on a scsi disk (Fujitsu MAM3376)? Should I trust that disk or send it back? Cheers, - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html