On Wednesday October 4, mickg@xxxxxxxxx wrote: > > I have been trying to run: > mdadm --grow /dev/md0 --raid-devices=6 --backup-file /backup_raid_grow > I get: > mdadm: Need to backup 1280K of critical section.. > mdadm: /dev/md0: Cannot get array details from sysfs It shouldn't do that.... Can you strace -o /tmp/trace -s 300 mdadm --grow ..... and send a copy of /tmp/trace. I'd like to see how far it gets at reading information from sysfs. > > Would it need to be unmounted to work properly (It is currently mounted > under lvm)? No. unmounting isn't needed and won't make any difference. NeilBrown - 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
