Dear Neil, I encounter a little problem when perform the raid5 to raid6 migration. The result is data corruption if i stop the raid while reshape and then reassemble the raid. Here is the operation oder: Environment : linux-2.6.31 . mdadm 3.1 ./mdadm -C /dev/md2 -R -amd -l5 -n4 /dev/sd[cdef]3 -z 1000000 mkfs.ext3 /dev/md2 mount /dev/md2 /volume1/ cp /bin/* /volume1/ ./mdadm /dev/md2 -a /dev/sdg3 ./mdadm --grow --level=6 --layout=default --backup-file=/root/bak2 /dev/md2 umount /dev/md2 ./mdadm -S /dev/md2 (Stop it before reshape end) ./mdadm -A /dev/md2 --backup-file=/root/bak2 /dev/sd[cdefg]3 mount /dev/md2 /volume1 <--- This will cause an error that file system could not be mounted. The interesting thing is if i don't stop the raid while reshape. The data will not corruption. Is it means the operations not permitted while the reshape process ? Thanks. Best Regards, KueiHuan-Chen -- 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
