From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nigel J. Terry" Subject: Re: Raid5 reshape Date: Sat, 17 Jun 2006 15:21:39 -0400 Message-ID: <44945643.3070300@nigelterry.net> References: <449250ED.7090302@irule.net> <17554.21119.487820.638171@cse.unsw.edu.au> <4492D5B1.60004@nigelterry.net> <4492D8D9.7010101@irule.net> <17555.12441.42212.93049@cse.unsw.edu.au> <4493330E.30501@nigelterry.net> <17555.13409.834439.80361@cse.unsw.edu.au> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <17555.13409.834439.80361@cse.unsw.edu.au> Sender: linux-raid-owner@vger.kernel.org To: Neil Brown , linux-raid@vger.kernel.org List-Id: linux-raid.ids Neil Brown wrote: > On Friday June 16, nigel@nigelterry.net wrote: > >> Thanks for all the advice. One final question, what kernel and mdadm >> versions do I need? >> > > For resizing raid5: > > mdadm-2.4 or later > linux-2.6.17-rc2 or later > > NeilBrown > - > 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 > > Ok, I tried and screwed up! I upgraded my kernel and mdadm. I set the grow going and all looked well, so as it said it was going to take 430 minutes, I went to Starbucks. When I came home there had been a power cut, but my UPS had shut the system down. When power returned I rebooted. Now I think I had failed to set the new partition on /dev/hdc1 to Raid Autodetect, so it didn't find it at reboot. I tried to hot add it, but now I seem to have a deadlock situation. Although --detail shows that it is degraded and recovering, /proc/mdstat shows it is reshaping. In truth there is no disk activity and the count in /proc/mdstat is not changing. I gues sthe only good news is that I can still mount the device and my data is fine. Please see below... Any ideas what I should do next? Thanks Nigel [root@homepc ~]# uname -a Linux homepc.nigelterry.net 2.6.17-rc6 #1 SMP Sat Jun 17 11:05:52 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux [root@homepc ~]# mdadm --version mdadm - v2.5.1 - 16 June 2006 [root@homepc ~]# mdadm --detail /dev/md0 /dev/md0: Version : 00.91.03 Creation Time : Tue Apr 18 17:44:34 2006 Raid Level : raid5 Array Size : 490223104 (467.51 GiB 501.99 GB) Device Size : 245111552 (233.76 GiB 250.99 GB) Raid Devices : 4 Total Devices : 4 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Sat Jun 17 15:15:05 2006 State : clean, degraded, recovering Active Devices : 3 Working Devices : 4 Failed Devices : 0 Spare Devices : 1 Layout : left-symmetric Chunk Size : 128K Reshape Status : 6% complete Delta Devices : 1, (3->4) UUID : 50e3173e:b5d2bdb6:7db3576b:644409bb Events : 0.3211829 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 8 17 1 active sync /dev/sdb1 2 3 65 2 active sync /dev/hdb1 3 0 0 3 removed 4 22 1 - spare /dev/hdc1 [root@homepc ~]# cat /proc/mdstat Personalities : [raid5] [raid4] md0 : active raid5 sdb1[1] sda1[0] hdc1[4](S) hdb1[2] 490223104 blocks super 0.91 level 5, 128k chunk, algorithm 2 [4/3] [UUU_] [=>...................] reshape = 6.9% (17073280/245111552) finish=86.3min speed=44003K/sec unused devices: [root@homepc ~]#