mdadm raid5

[lord_Niedzwiedz]

         Znalazłem coś takiego ??!! ;-(
Może to jest błędem ;/

[root w Misiek ~]# mdadm -X /dev/sdc4
         Filename : /dev/sdc4
            Magic : a92b4efc
mdadm: invalid bitmap magic 0xa92b4efc, the bitmap file appears to be 
corrupted
          Version : 1
mdadm: unknown bitmap version 1, either the bitmap file is corrupted or 
you need to upgrade your tools


On 10.07.2013 16:27, lord_Niedzwiedz wrote:
>     Mam problem z macierzami RAID5 mdadm.
>
> [root w Misiek ~]# hdparm -tT /dev/md2
> /dev/md2:
>  Timing cached reads:   7378 MB in  2.00 seconds = 3689.51 MB/sec
>  Timing buffered disk reads: 666 MB in  3.00 seconds = 221.96 MB/sec
> [root w louve.komandor.net ~]# hdparm -tT /dev/md4
> /dev/md4:
>  Timing cached reads:   4572 MB in  2.00 seconds = 2286.55 MB/sec
>  Timing buffered disk reads:  20 MB in  3.36 seconds =   5.95 MB/sec
>
> [root w Misiek ~]# cat /proc/mdstat
> Personalities : [raid6] [raid5] [raid4] [raid1]
> md4 : active raid5 sdb4[1] sdc4[4] sdd4[2]
>       2783457792 blocks super 1.2 level 5, 512k chunk, algorithm 2 
> [4/3] [_UUU]
>
> md1 : active raid1 sda1[0] sdc1[3] sdb1[1]
>       489856 blocks [4/3] [UU_U]
>
> md2 : active raid5 sda2[6] sdc2[4] sdb2[5]
> 146485248 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/3] [UU_U]
>
>
> Jeśli dam teraz:
> [root w Misiek ~]# mdadm --manage /dev/md4 --add /dev/sda4
> mdadm: re-added /dev/sda4
> [root w Misiek ~]# cat /proc/mdstat
> Personalities : [raid6] [raid5] [raid4] [raid1]
> md4 : active raid5 sda4[5] sdb4[1] sdc4[4] sdd4[2]
>       2783457792 blocks super 1.2 level 5, 512k chunk, algorithm 2 
> [4/3] [_UUU]
>       [>....................]  recovery =  0.0% (12/927819264) 
> finish=2899435.1min speed=4K/sec
>
> md1 : active raid1 sda1[0] sdc1[3] sdb1[1]
>       489856 blocks [4/3] [UU_U]
>
> md2 : active raid5 sda2[6] sdc2[4] sdb2[5]
> 146485248 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/3] [UU_U]
>
>
> Jak wi8dać MD4 chce się odbudowywać koszmarnie wolno !! ;-(((
> Co z tym zrobić, jak to naprawić ??!!??!!
>
> Dziwna sprawa. Jak korzystam z RAID'a md2 to wszystko śmiga na 3 
> dyskach (czwarty specjalnie wypiety - spowalniało).
>
> Natomiast jak koszystam z md4 to jest total zwiecha i kicha.
> Co to może być ??
>
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>

-- 
Pozdro
lord_Niedzwiedz