mdamd problem

[Arkadiusz Miśkiewicz]

On Tuesday 03 of November 2015, lord_Niedzwiedz wrote:
> RAID 1.
> Wypadła mi jedna partycja z macierzy. Macierz nie chciała się
> odbudowywać. Wymieniłem dysk na którym były bad sektory.

Odbudowuje się tylko idzie jak krew z nosa (6MB/s).

Zobacz co masz w 
/proc/sys/dev/raid/speed_limit_min
/proc/sys/dev/raid/speed_limit_max

Możesz próbować podbić. Jeśli to jednak dysk jest taki powolny to niewiele to 
pomoże.

ps. na przyszłość dodaj bitmapę do (większych) macierzy. W tym wypadku by nie 
pomogło ale innym rebuildom owszem.

> 
> Dalej nie chce mi się odbudować. md1 oraz md3 idą.
> Poniżej informacje z rekonstrukcji.
> 
> [root w dns2 ~]# cat /proc/mdstat
> Personalities : [raid1]
> md3 : active raid1 sda3[1]
>        882570816 blocks [2/1] [_U]
> 
> md1 : active raid1 sda1[1]
>        7815488 blocks [2/1] [_U]
> 
> md2 : active raid1 sda2[1]
>        86373376 blocks [2/1] [_U]
> 
> unused devices: <none>
> [root w dns2 ~]# df -h
> System plików  rozm. użyte dost. %uż. zamont. na
> /dev/md2         81G   45G   33G  58% /
> run             2,5G  312K  2,5G   1% /run
> devtmpfs        2,5G  8,0K  2,5G   1% /dev
> /dev/md3        829G  561G  227G  72% /var/ftp
> [root w dns2 ~]# cfdisk
> 
> [root w dns2 ~]# mdadm --manage /dev/md1 --add /dev/sdb1
> mdadm: added /dev/sdb1
> [root w dns2 ~]# cat /proc/mdstat
> Personalities : [raid1]
> md3 : active raid1 sda3[1]
>        882570816 blocks [2/1] [_U]
> 
> md1 : active raid1 sdb1[2] sda1[1]
>        7815488 blocks [2/1] [_U]
>        [>....................]  recovery =  0.1% (13056/7815488)
> finish=19.8min speed=6528K/sec
> 
> md2 : active raid1 sda2[1]
>        86373376 blocks [2/1] [_U]
> 
> unused devices: <none>
> [root w dns2 ~]# cat /proc/mdstat
> Personalities : [raid1]
> md3 : active raid1 sda3[1]
>        882570816 blocks [2/1] [_U]
> 
> md1 : active raid1 sdb1[0] sda1[1]
>        7815488 blocks [2/2] [UU]
> 
> md2 : active raid1 sda2[1]
>        86373376 blocks [2/1] [_U]
> 
> unused devices: <none>
> [root w dns2 ~]# mdadm --manage /dev/md2 --add /dev/sdb2
> mdadm: added /dev/sdb2
> [root w dns2 ~]# cat /proc/mdstat
> Personalities : [raid1]
> md3 : active raid1 sda3[1]
>        882570816 blocks [2/1] [_U]
> 
> md1 : active raid1 sdb1[0] sda1[1]
>        7815488 blocks [2/2] [UU]
> 
> md2 : active raid1 sdb2[2] sda2[1]
>        86373376 blocks [2/1] [_U]
>        [>....................]  recovery =  0.5% (510272/86373376)
> finish=254.2min speed=5627K/sec
> 
> unused devices: <none>
> [root w dns2 ~]# cat /proc/mdstat
> Personalities : [raid1]
> md3 : active raid1 sda3[1]
>        882570816 blocks [2/1] [_U]
> 
> md1 : active raid1 sdb1[0] sda1[1]
>        7815488 blocks [2/2] [UU]
> 
> md2 : active raid1 sdb2[2](S) sda2[1]
>        86373376 blocks [2/1] [_U]
> 
> unused devices: <none>
> [root w dns2 ~]# mdadm --detail /dev/md2
> /dev/md2:
>          Version : 0.90
>    Creation Time : Sat Nov  8 14:06:55 2008
>       Raid Level : raid1
>       Array Size : 86373376 (82.37 GiB 88.45 GB)
>    Used Dev Size : 86373376 (82.37 GiB 88.45 GB)
>     Raid Devices : 2
>    Total Devices : 2
> Preferred Minor : 2
>      Persistence : Superblock is persistent
> 
>      Update Time : Tue Nov  3 16:08:49 2015
>            State : clean, degraded
>   Active Devices : 1
> Working Devices : 2
>   Failed Devices : 0
>    Spare Devices : 1
> 
>             UUID : ad96c3c7:6fb5b23a:0be776df:a7034ab0
>           Events : 0.6226541
> 
>      Number   Major   Minor   RaidDevice State
>         0       0        0        0      removed
>         1       8        2        1      active sync   /dev/sda2
> 
>         2       8       18        -      spare   /dev/sdb2
> 
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-- 
Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )