Setup is a Debian-based distribution running a 2.4.24 shell that has been patched to support RAID and to add 1394 support into the kernel (rather than as modules). Have been running for a week as a RAID-5 using mdadm. When turning the machine off I would use: mdadm -S /dev/md0 then upon booting I would first run the rescan-scsi-bus.sh script from the Linux1394.org site (to bring up all 4 drives) and then bring up the array using: mdadm -A /dev/md0 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 and finally mount the array as: mount -t reiserfs /dev/md0 /disks/RAID Again, this seemed to work just fine for a little over a week until last night. When I went to bring up the system with the mdadm -A command it would complain that it could only load two of the drives and that wasn't enough to bring up the array. The rescan script showed all four, but to be safe I did the "modprobe sbp2" to see if there was an issue. Trying to bring up the array after that I keep getting a message that the drives are missing a superblock. What research I've been able to do on the archives here leads me to think that getting a newer version of mdadm that supports the --update=summaries option might allow me to bring up the array. Will that work, or is that going to seriously "munge" my data? Any other suggestions on what to do? Thanks, Ewan Grantham - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
