YANO's digital garage

Last-modified: 2024-04-10 (水)

[一語一絵/IT系]

RAID5解放 / 2019-09-24 (火)

ReadyNASに構築した6TB×4台で16.5TBのRAIDに無事録画データが移行できたので、WD30EZRx×5構成でRAID5な11TBドライブを解放。

まず/etc/samba/smb.confの共有設定をコメントアウトしたあと、restartしてマウントも解除。

root@GT110b:~# service smbd restart
smbd stop/waiting
smbd start/running, process 8215
root@GT110b:~# umount /mnt/raid
root@GT110b:~#

そしてmdadmでRAIDの停止。

root@GT110b:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid5 sdf[0] sde[5] sdi[4] sdh[2] sdg[1]
      11720540160 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/5] [UUUUU]

unused devices: <none>
root@GT110b:~#
root@GT110b:~# mdadm -D /dev/md0
/dev/md0:
        Version : 1.2
  Creation Time : Thu Jul 20 23:01:38 2017
     Raid Level : raid5
     Array Size : 11720540160 (11177.58 GiB 12001.83 GB)
  Used Dev Size : 2930135040 (2794.39 GiB 3000.46 GB)
   Raid Devices : 5
  Total Devices : 5
    Persistence : Superblock is persistent

    Update Time : Wed Sep 25 01:35:53 2019
          State : clean
Active Devices : 5
Working Devices : 5
Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : GT110b:0  (local to host GT110b)
           UUID : 81328295:5f1fa0c2:b3535462:79680794
         Events : 388988

    Number   Major   Minor   RaidDevice State
       0       8       80        0      active sync   /dev/sdf
       1       8       96        1      active sync   /dev/sdg
       2       8      112        2      active sync   /dev/sdh
       4       8      128        3      active sync   /dev/sdi
       5       8       64        4      active sync   /dev/sde
root@GT110b:~#
root@GT110b:~# mdadm --misc --stop /dev/md0
mdadm: stopped /dev/md0
root@GT110b:~#
root@GT110b:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
unused devices: <none>
root@GT110b:~# mdadm --misc --zero-superblock /dev/sd[efghi]
root@GT110b:~#