我正在运行一个有 5 个磁盘的 raid5 阵列。一个磁盘被禁用了。
消息：
...
[Tue Dec 5 01:02:08 2017] md/raid:md0: read error NOT corrected!! (sector 15263288 on sdb1).
[Tue Dec 5 01:02:50 2017] sd 1:0:0:0: [sdb] tag#4 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[Tue Dec 5 01:02:50 2017] sd 1:0:0:0: [sdb] tag#4 Sense Key : Illegal Request [current] [descriptor]
[Tue Dec 5 01:02:50 2017] sd 1:0:0:0: [sdb] tag#4 Add. Sense: Unaligned write command
[Tue Dec 5 01:02:50 2017] sd 1:0:0:0: [sdb] tag#4 CDB: Synchronize Cache(10) 35 00 00 00 00 00 00 00 00 00
[Tue Dec 5 01:02:50 2017] blk_update_request: I/O error, dev sdb, sector 2064
[Tue Dec 5 01:02:50 2017] md/raid:md0: Disk failure on sdb1, disabling device.
[Tue Dec 5 01:02:50 2017] disk 0, o:0, dev:sdb1
[Tue Dec 5 01:03:10 2017] disk 0, o:0, dev:sdb1
mdadm -D /dev/md0
Version : 1.2
Creation Time : Mon Oct 17 14:21:51 2016
Raid Level : raid5
Array Size : 5860147200 (5588.67 GiB 6000.79 GB)
Used Dev Size : 1953382400 (1862.89 GiB 2000.26 GB)
Raid Devices : 4
Total Devices : 5
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Wed Dec 6 10:06:21 2017
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 1
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : ...:0 (local to host ...)
UUID : 141ffb01:9780e780:ea038a51:55a98453
Events : 57755
Number Major Minor RaidDevice State
5 8 113 0 active sync /dev/sdh1
1 8 33 1 active sync /dev/sdc1
2 8 49 2 active sync /dev/sdd1
4 8 97 3 active sync /dev/sdg1
0 8 17 - faulty /dev/sdb1
smartctl -H /dev/sdb
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
如何处理这个问题...移除设备并重新添加？
mdadm /dev/md0 --remove /dev/sdb1
mdadm /dev/md0 --add /dev/sdb1