在三个磁盘事件之后挽救mdadm RAID 6arrays

mdadm 3.2.5,14个磁盘RAID 6

星期五有驱动器故障。 今天又有两个接连不断。 所有驱动器似乎完全可用。

这大概是40TBarrays，我可以用你的帮助来救援arrays。

所有成员都在每个物理磁盘的分区2上。

• 我可以使用外部的SFF-8088连接器作为一种廉价的方式来获得两个更多的内部SFF-8087端口吗？
• 越来越多的RAID0到RAID5同步延迟
• 无法从LSI Software MegaRAID安装分区
• RAID 10 + LVM布局
• 在RAID分区上意外删除的LVM

# mdadm --assemble --scan mdadm: /dev/md/media:0 assembled from 11 drives - not enough to start the array. mdadm: No arrays found in config file or automatically 

 # mdadm --assemble --scan --verbose mdadm: looking for devices for further assembly mdadm: no recogniseable superblock on /dev/loop0 mdadm: Cannot assemble mbr metadata on /dev/sdo1 mdadm: Cannot assemble mbr metadata on /dev/sdo mdadm: no RAID superblock on /dev/sdm1 mdadm: no RAID superblock on /dev/sdm mdadm: no RAID superblock on /dev/sdn1 mdadm: no RAID superblock on /dev/sdn mdadm: no RAID superblock on /dev/sdj1 mdadm: no RAID superblock on /dev/sdj mdadm: no RAID superblock on /dev/sdk1 mdadm: no RAID superblock on /dev/sdk mdadm: no RAID superblock on /dev/sdl1 mdadm: no RAID superblock on /dev/sdl mdadm: no RAID superblock on /dev/sdi1 mdadm: no RAID superblock on /dev/sdi mdadm: no RAID superblock on /dev/sdh1 mdadm: no RAID superblock on /dev/sdh mdadm: no RAID superblock on /dev/sdb1 mdadm: no RAID superblock on /dev/sdb mdadm: no RAID superblock on /dev/sda1 mdadm: no RAID superblock on /dev/sda mdadm: no RAID superblock on /dev/sdf1 mdadm: no RAID superblock on /dev/sdf mdadm: no RAID superblock on /dev/sdd1 mdadm: no RAID superblock on /dev/sdd mdadm: no RAID superblock on /dev/sdc1 mdadm: no RAID superblock on /dev/sdc mdadm: no RAID superblock on /dev/sdg1 mdadm: no RAID superblock on /dev/sdg mdadm: no RAID superblock on /dev/sde1 mdadm: no RAID superblock on /dev/sde mdadm: /dev/sdm2 is identified as a member of /dev/md/media:0, slot 3. mdadm: /dev/sdn2 is identified as a member of /dev/md/media:0, slot 8. mdadm: /dev/sdj2 is identified as a member of /dev/md/media:0, slot 5. mdadm: /dev/sdk2 is identified as a member of /dev/md/media:0, slot 11. mdadm: /dev/sdl2 is identified as a member of /dev/md/media:0, slot 4. mdadm: /dev/sdi2 is identified as a member of /dev/md/media:0, slot 7. mdadm: /dev/sdh2 is identified as a member of /dev/md/media:0, slot 1. mdadm: /dev/sdb2 is identified as a member of /dev/md/media:0, slot 6. mdadm: /dev/sda2 is identified as a member of /dev/md/media:0, slot 13. mdadm: /dev/sdf2 is identified as a member of /dev/md/media:0, slot 2. mdadm: /dev/sdd2 is identified as a member of /dev/md/media:0, slot 9. mdadm: /dev/sdc2 is identified as a member of /dev/md/media:0, slot 6. mdadm: /dev/sdg2 is identified as a member of /dev/md/media:0, slot 12. mdadm: /dev/sde2 is identified as a member of /dev/md/media:0, slot 0. mdadm: added /dev/sdh2 to /dev/md/media:0 as 1 mdadm: added /dev/sdf2 to /dev/md/media:0 as 2 mdadm: added /dev/sdm2 to /dev/md/media:0 as 3 mdadm: added /dev/sdl2 to /dev/md/media:0 as 4 mdadm: added /dev/sdj2 to /dev/md/media:0 as 5 mdadm: added /dev/sdc2 to /dev/md/media:0 as 6 (possibly out of date) mdadm: added /dev/sdi2 to /dev/md/media:0 as 7 mdadm: added /dev/sdn2 to /dev/md/media:0 as 8 mdadm: added /dev/sdd2 to /dev/md/media:0 as 9 (possibly out of date) mdadm: no uptodate device for slot 10 of /dev/md/media:0 mdadm: added /dev/sdk2 to /dev/md/media:0 as 11 mdadm: added /dev/sdg2 to /dev/md/media:0 as 12 mdadm: added /dev/sda2 to /dev/md/media:0 as 13 mdadm: added /dev/sde2 to /dev/md/media:0 as 0 mdadm: /dev/md/media:0 assembled from 11 drives - not enough to start the array. mdadm: looking for devices for further assembly mdadm: No arrays found in config file or automatically 

 # mdadm --examine /dev/sd?2 --verbose /dev/sda2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : 822fd02b:454da94c:57f68535:964996b1 Update Time : Mon Apr 6 19:19:53 2015 Checksum : 8e7a48ab - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 13 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdb2: Magic : a92b4efc Version : 1.2 Feature Map : 0x2 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Recovery Offset : 0 sectors State : clean Device UUID : 5c4a1046:c232402c:45f1c604:569f6896 Update Time : Mon Apr 6 16:12:05 2015 Checksum : 3c7663c2 - correct Events : 2382358 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 6 Array State : AAAAAAAAAA.AAA ('A' == active, '.' == missing) /dev/sdc2: Magic : a92b4efc Version : 1.2 Feature Map : 0x2 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors Recovery Offset : 0 sectors State : clean Device UUID : e211f88d:5c355522:fbeb7134:16b17684 Update Time : Mon Apr 6 16:28:09 2015 Checksum : 982c3e96 - correct Events : 2382480 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 6 Array State : AAAAAAAAAA.AAA ('A' == active, '.' == missing) /dev/sdd2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : active Device UUID : de3f41b8:3016870c:344f2a92:c08e1085 Update Time : Mon Apr 6 19:19:34 2015 Checksum : af2bfdb - correct Events : 2384965 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 9 Array State : AAAAAA.AAA.AAA ('A' == active, '.' == missing) /dev/sde2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : 071afb12:f78f4f15:f65aa629:8eadcfa7 Update Time : Mon Apr 6 19:19:53 2015 Checksum : 28a53e70 - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 0 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdf2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : e319bdaa:22bc1153:c43b4878:8a9c1832 Update Time : Mon Apr 6 19:19:53 2015 Checksum : d7143a42 - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 2 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdg2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : f5477580:94357948:6e97fe82:c8805bcd Update Time : Mon Apr 6 19:19:53 2015 Checksum : 482d21b8 - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 12 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdh2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : 3dd1df1b:203c6453:0964ebad:245b1670 Update Time : Mon Apr 6 19:19:53 2015 Checksum : bc2a587a - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 1 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdi2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : 4a013330:37c565f9:cb761d35:7ce4ddb4 Update Time : Mon Apr 6 19:19:53 2015 Checksum : 4278adbb - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 7 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdj2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : d5521994:6c4f04f9:f7ca0dd9:dff3c6cd Update Time : Mon Apr 6 19:19:53 2015 Checksum : 62d6ed06 - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 5 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdk2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : c1514b9f:24616fed:324a50fb:9469043a Update Time : Mon Apr 6 19:19:53 2015 Checksum : f0f3f2a5 - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 11 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdl2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : 6c33c472:af1ffd8f:22d10ea3:9edc75bb Update Time : Mon Apr 6 19:19:53 2015 Checksum : 902a8ccd - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 4 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdm2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : b750b4e4:2b1bac5f:cbd3bde5:eab657e7 Update Time : Mon Apr 6 19:19:53 2015 Checksum : 405a828f - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 3 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing) /dev/sdn2: Magic : a92b4efc Version : 1.2 Feature Map : 0x0 Array UUID : b1c40379:914e5d18:dddb893b:4dc5a28f Name : media:0 Creation Time : Wed Nov 7 22:06:02 2012 Raid Level : raid6 Raid Devices : 14 Avail Dev Size : 5860265984 (2794.39 GiB 3000.46 GB) Array Size : 35160446976 (33531.62 GiB 36004.30 GB) Used Dev Size : 5860074496 (2794.30 GiB 3000.36 GB) Data Offset : 262144 sectors Super Offset : 8 sectors State : clean Device UUID : 4670b36c:07cbe661:20e3d314:f7c3fd42 Update Time : Mon Apr 6 19:19:53 2015 Checksum : 55506e59 - correct Events : 2384973 Layout : left-symmetric Chunk Size : 512K Device Role : Active device 8 Array State : AAAAAA.AA..AAA ('A' == active, '.' == missing)