>-----Original Message----- >From: Anthony Youngman [mailto:antlists@xxxxxxxxxxxxxxx] >Sent: 12 August 2017 18:44 >To: Joe Landman; Bryan Hepworth; linux-raid@xxxxxxxxxxxxxxx >Subject: Re: force raid reassembly > >Only thing is, sdb1 says "AAA.AA", which is a bit weird, unless sdb1 is >the very last one, which is the last dot in AAA.A. of all the others. > >If five drives all have almost identical event counts, I'd be inclined >to ddrescue the dodgy one (probably sdb1) and hope it all works out. > >The alternative is to ddrescue both dodgy drives, and write the program >that marks blocks as dodgy. Then you can hope that a scan can rebuild >everything. > >Cheers, >Wol Hi Anthony I've got another quick question, hope you can see what you reckon... The disks are in an md1200 storage shelf and all seem to have settled down now. Could you take a quick look at the output and see if you think the same advice stands. Thanks so much. Bryan [root@inscribe4 ~]# cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] md125 : active (auto-read-only) raid5 sdh1[4] sdg1[6] sdi1[3] sdk1[1] sdl1[0] sdj1[7] 9767552000 blocks super 1.2 level 5, 512k chunk, algorithm 2 [6/6] [UUUUUU] bitmap: 0/15 pages [0KB], 65536KB chunk md126 : inactive sdb1[4] sde1[7] sdc1[0] sdf1[1] sdd1[8](S) 9766904645 blocks super 1.2 md127 : active (auto-read-only) raid6 sdo[2] sdq[4] sdm[0] sdw[10] sdt[12] sds[6] sdn[1] sdr[5] sdu[8] sdp[3] sdx[11] sdv[9] 19535129600 blocks super 1.2 level 6, 512k chunk, algorithm 2 [12/12] [UUUUUUUUUUUU] bitmap: 0/15 pages [0KB], 65536KB chunk unused devices: <none> [root@inscribe4 ~]# mdadm --examine /dev/sda1 /dev/sda1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89 Name : intermediate0 Creation Time : Tue Oct 15 21:03:50 2013 Raid Level : raid5 Raid Devices : 6 Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB) Array Size : 9766901760 (9314.44 GiB 10001.31 GB) Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262064 sectors, after=1154 sectors State : clean Device UUID : a84263cd:75ce20b9:a3a72a1c:b18b2457 Internal Bitmap : 8 sectors from superblock Update Time : Mon Jul 31 22:50:37 2017 Checksum : 74d320d6 - correct Events : 119879 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 5 Array State : AAA.AA ('A' == active, '.' == missing, 'R' == replacing) [root@inscribe4 ~]# mdadm --examine /dev/sdb1 /dev/sdb1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89 Name : intermediate0 Creation Time : Tue Oct 15 21:03:50 2013 Raid Level : raid5 Raid Devices : 6 Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB) Array Size : 9766901760 (9314.44 GiB 10001.31 GB) Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262064 sectors, after=1154 sectors State : clean Device UUID : be5ec20e:249645e5:22aeca25:a60c7599 Internal Bitmap : 8 sectors from superblock Update Time : Tue Aug 8 14:16:53 2017 Checksum : 2e529fae - correct Events : 119894 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 4 Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing) [root@inscribe4 ~]# mdadm --examine /dev/sdc1 /dev/sdc1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89 Name : intermediate0 Creation Time : Tue Oct 15 21:03:50 2013 Raid Level : raid5 Raid Devices : 6 Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB) Array Size : 9766901760 (9314.44 GiB 10001.31 GB) Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262064 sectors, after=1154 sectors State : clean Device UUID : 1732f121:f6f0df09:fafd2411:7c78ce00 Internal Bitmap : 8 sectors from superblock Update Time : Tue Aug 8 14:16:53 2017 Checksum : b8cf8981 - correct Events : 119894 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 0 Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing) [root@inscribe4 ~]# mdadm --examine /dev/sdd1 /dev/sdd1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89 Name : intermediate0 Creation Time : Tue Oct 15 21:03:50 2013 Raid Level : raid5 Raid Devices : 6 Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB) Array Size : 9766901760 (9314.44 GiB 10001.31 GB) Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262064 sectors, after=1154 sectors State : clean Device UUID : 8d0b6c8e:0c526265:6ec0a71b:52a636ba Internal Bitmap : 8 sectors from superblock Update Time : Tue Aug 8 14:16:53 2017 Checksum : 44b7b461 - correct Events : 119894 Layout : left-symmetric Chunk Size : 512K Device Role : spare Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing) [root@inscribe4 ~]# mdadm --examine /dev/sde1 /dev/sde1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89 Name : intermediate0 Creation Time : Tue Oct 15 21:03:50 2013 Raid Level : raid5 Raid Devices : 6 Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB) Array Size : 9766901760 (9314.44 GiB 10001.31 GB) Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262064 sectors, after=1154 sectors State : clean Device UUID : 3d414ad2:4310c1f9:98f50214:3e9b1e33 Internal Bitmap : 8 sectors from superblock Update Time : Tue Aug 8 14:16:53 2017 Checksum : 8e37d25d - correct Events : 119894 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 2 Array State : AAA.A. ('A' == active, '.' == missing, 'R' == replacing) [root@inscribe4 ~]# mdadm --examine /dev/sdf1 /dev/sdf1: Magic : a92b4efc Version : 1.2 Feature Map : 0x1 Array UUID : ace00fb5:8771d55a:cf36728b:ddc3ce89 Name : intermediate0 Creation Time : Tue Oct 15 21:03:50 2013 Raid Level : raid5 Raid Devices : 6 Avail Dev Size : 3906761858 (1862.89 GiB 2000.26 GB) Array Size : 9766901760 (9314.44 GiB 10001.31 GB) Used Dev Size : 3906760704 (1862.89 GiB 2000.26 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Unused Space : before=262064 sectors, after=1154 sectors State : clean Device UUID : e238e74b:d40efc43:d34d876d:ca0700b0 Internal Bitmap : 8 sectors from superblock Update Time : Tue Aug 8 14:16:53 2017 Checksum : 28758d54 - correct Events : 119894 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 1 Array State : AAA.A. 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