I am happy to report successfully using raidreconf to grow a 7 x 73GB RAID5 to 10 x 73GB RAID5. The operation took around 16 hours. Machine is a 4-way xeon with 6GB RAM; though the kernel on the CD I booted from only supported UP/1GB RAM. I'm not sure whether the extra CPUs/memory would have helped performance. Disks are 10kRPM scsi disks. The sequence of commands was: boot from cd (raid is root filesystem) reiserfsck /dev/md0 raidstop /dev/md0 raidreconf -o oldraidtab -n newraidtab -m /dev/md0 go home and sleep! reiserfsck /dev/md0 resize_reiserfs /dev/md0 reiserfsck /dev/md0 then reboot, and machine carried on as before! No errors were reported at any stage. All very impressive. Thanks for the good work! -- Alistair Riddell - BOFH IT Manager, George Watson's College, Edinburgh Tel: +44 131 446 6070 Fax: +44 131 452 8594 Microsoft - because god hates us - 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