raid问题，救命，各位大侠帮忙

scottwa

非法断电关机，开机raid5启动失败，log以下，请大家分析下，如何恢复


audit subsystem ver 0.1 initialized
[events: 00000038]
[events: 00000036]
[events: 00000036]
[events: 00000038]
md: autorun ...
md: considering sdb1 ...
md:  adding sdb1 ...
md:  adding sdd1 ...
md:  adding sdc1 ...
md:  adding sda1 ...
md: created md0
md: bind<sda1,1>
md: bind<sdc1,2>
md: bind<sdd1,3>
md: bind<sdb1,4>
md: running: <sdb1><sdd1><sdc1><sda1>
md: sdb1's event counter: 00000038
md: sdd1's event counter: 00000036
md: sdc1's event counter: 00000036
md: sda1's event counter: 00000038
md: superblock update time inconsistency -- using the most recent one
md: freshest: sdb1
md: kicking non-fresh sdd1 from array!
md: unbind<sdd1,3>
md: export_rdev(sdd1)
md: kicking non-fresh sdc1 from array!
md: unbind<sdc1,2>
md: export_rdev(sdc1)
md: device name has changed from sdc1 to sdb1 since last import!
md: device name has changed from sdd1 to sda1 since last import!
md0: former device sda1 is unavailable, removing from array!
md0: former device sdb1 is unavailable, removing from array!
md: md0: raid array is not clean -- starting background reconstruction
md0: max total readahead window set to 768k
md0: 3 data-disks, max readahead per data-disk: 256k
raid5: device sdb1 operational as raid disk 0
raid5: device sda1 operational as raid disk 1
raid5: not enough operational devices for md0 (2/4 failed)
RAID5 conf printout:
--- rd:4 wd:2 fd:2
disk 0, s:0, o:1, n:0 rd:0 us:1 dev:sdb1
disk 1, s:0, o:1, n:1 rd:1 us:1 dev:sda1
disk 2, s:0, o:0, n:2 rd:2 us:1 dev:[dev 00:00]
disk 3, s:0, o:0, n:3 rd:3 us:1 dev:[dev 00:00]
raid5: failed to run raid set md0
md: pers->run() failed ...
md :do_md_run() returned -22
md: md0 stopped.
md: unbind<sdb1,1>
md: export_rdev(sdb1)
md: unbind<sda1,0>
md: export_rdev(sda1)
md: ... autorun DONE.
[events: 00000038]
[events: 00000036]
[events: 00000036]
[events: 00000038]
md: autorun ...
md: considering sdb1 ...
md:  adding sdb1 ...
md:  adding sdd1 ...
md:  adding sdc1 ...
md:  adding sda1 ...
md: created md0
md: bind<sda1,1>
md: bind<sdc1,2>
md: bind<sdd1,3>
md: bind<sdb1,4>
md: running: <sdb1><sdd1><sdc1><sda1>
md: sdb1's event counter: 00000038
md: sdd1's event counter: 00000036
md: sdc1's event counter: 00000036
md: sda1's event counter: 00000038
md: superblock update time inconsistency -- using the most recent one
md: freshest: sdb1
md: kicking non-fresh sdd1 from array!
md: unbind<sdd1,3>
md: export_rdev(sdd1)
md: kicking non-fresh sdc1 from array!
md: unbind<sdc1,2>
md: export_rdev(sdc1)
md: device name has changed from sdc1 to sdb1 since last import!
md: device name has changed from sdd1 to sda1 since last import!
md0: former device sda1 is unavailable, removing from array!
md0: former device sdb1 is unavailable, removing from array!
md: md0: raid array is not clean -- starting background reconstruction
md0: max total readahead window set to 768k
md0: 3 data-disks, max readahead per data-disk: 256k
raid5: device sdb1 operational as raid disk 0
raid5: device sda1 operational as raid disk 1
raid5: not enough operational devices for md0 (2/4 failed)
RAID5 conf printout:
--- rd:4 wd:2 fd:2
disk 0, s:0, o:1, n:0 rd:0 us:1 dev:sdb1
disk 1, s:0, o:1, n:1 rd:1 us:1 dev:sda1
disk 2, s:0, o:0, n:2 rd:2 us:1 dev:[dev 00:00]
disk 3, s:0, o:0, n:3 rd:3 us:1 dev:[dev 00:00]
raid5: failed to run raid set md0
md: pers->run() failed ...
md :do_md_run() returned -22
md: md0 stopped.
md: unbind<sdb1,1>
md: export_rdev(sdb1)
md: unbind<sda1,0>
md: export_rdev(sda1)
md: ... autorun DONE.

scottwa

在线等，各位帮忙

是否：
md: running: <sdb1><sdd1><sdc1><sda1>
md: sdb1's event counter: 00000038
md: sdd1's event counter: 00000036
md: sdc1's event counter: 00000036
md: sda1's event counter: 00000038
有问题，如何解决？

me09

问题!
您用的是 软 RAID还是硬RAID?
问题说不清!怎么帮你?

天外闲云

软RAID，有2颗盘被踢出来了。不知道是不是损坏了。如果是的话，数据就都没了哦。

谁给你做的RAID?找他帮你看看。

scottwa

linux 做的软raid5，2块盘没有坏，就是被踢出来了；
fdisk -l 还是可以单独列出raid5的4块盘的
这个还有救么？

scottwa

先前曾经发生过一块盘被提出来，但是raid5还是可以启动，我hotadd加了拿块盘，sync同步也完成；数据也没问题
但是重启后，又发生2块盘被提出了；不知道怎么回事?