On Mon, 31 May 2010 01:07:38 -0500 "Leslie Rhorer" <lrhorer@xxxxxxxxxxx> wrote: > > -----Original Message----- > > From: Neil Brown [mailto:neilb@xxxxxxx] > > Sent: Monday, May 31, 2010 12:58 AM > > To: Leslie Rhorer > > Cc: linux-raid@xxxxxxxxxxxxxxx > > Subject: Re: Confused about reshape? > > > > On Mon, 31 May 2010 00:32:07 -0500 > > "Leslie Rhorer" <lrhorer@xxxxxxxxxxx> wrote: > > > > > > Just tell mdadm what you want and it will do it, or report that it > > cannot. > > > > > > Um, OK, I tried it, and it failed: > > > > > > Backup:/# mdadm --grow /dev/md0 --level=6 > > > mdadm: no changes to --grow > > > > cat /proc/mdstat ?? > > mdadm -D /dev/md0 ?? > > mdadm -V ?? > > uname -a ?? > > > > Maybe add -vv to the --grow > > /dev/md0: > Version : 1.02 > Creation Time : Sun Jul 12 20:44:02 2009 > Raid Level : raid5 > Array Size : 10255969024 (9780.85 GiB 10502.11 GB) > Used Dev Size : 1465138432 (1397.26 GiB 1500.30 GB) > Raid Devices : 8 > Total Devices : 9 > Persistence : Superblock is persistent > > Intent Bitmap : Internal You'll probably need to remove the bitmap for --grow to work... I really should fix that. > > Update Time : Mon May 31 00:44:25 2010 > State : active > Active Devices : 8 > Working Devices : 9 > Failed Devices : 0 > Spare Devices : 1 > > Layout : left-symmetric > Chunk Size : 256K > > Name : Backup:0 (local to host Backup) > UUID : 940ae4e4:04057ffc:5e92d2fb:63e3efb7 > Events : 987130 > > Number Major Minor RaidDevice State > 0 8 0 0 active sync /dev/sda > 1 8 16 1 active sync /dev/sdb > 2 8 32 2 active sync /dev/sdc > 8 8 48 3 active sync /dev/sdd > 4 8 64 4 active sync /dev/sde > 5 8 80 5 active sync /dev/sdf > 6 8 96 6 active sync /dev/sdg > 7 8 112 7 active sync /dev/sdh > > 9 8 128 - spare /dev/sdi > > Backup:/tmp# mdadm -V >> temp > mdadm - v3.0.3 - 22nd October 2009 I should have checked when you mention the mdadm version in the first email. You need at least 3.1.1 to convert RAID5 to RAID6. NeilBrown > > Backup:/tmp# uname -a > Linux Backup 2.6.32-3-amd64 #1 SMP Wed Feb 24 18:07:42 UTC 2010 x86_64 > GNU/Linux > > Backup:/tmp# mdadm --grow -vv /dev/md0 --level=6 >> temp > mdadm: no changes to --grow > > > -- 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
