WD30EZRX再登板

Thu, 10 May 2018 22:13:51 +0900

3TB×4構成でRAID5な9TBドライブが窮屈になってきたので、先月のWD40EZRZ投入で浮いたWD30EZRXを追加して、RAID5の容量を拡張する事に。

WD30EZRX

7日の夜にmdadm --addでドライブ/dev/sdjを追加し、mdadm --growでreshapingを開始。

root@GT110b:~# mdadm /dev/md0 --add /dev/sdj
root@GT110b:~# mdadm --grow /dev/md0 -n 5
root@GT110b:~#

丸一日以上が経過した、昨日の朝の状況を確認したところ…

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 : 8790405120 (8383.18 GiB 9001.37 GB)
Used Dev Size : 2930135040 (2794.39 GiB 3000.46 GB)
Raid Devices : 5
Total Devices : 5
Persistence : Superblock is persistent

Update Time : Wed May 9 08:38:47 2018
State : clean, reshaping
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0

Layout : left-symmetric
Chunk Size : 512K

Reshape Status : 50% complete
Delta Devices : 1, (4->5)

Name : GT110b:0 (local to host GT110b)
UUID : 81328295:5f1fa0c2:b3535462:79680794
Events : 11175

Number Major Minor RaidDevice State
0 8 64 0 active sync /dev/sde
1 8 80 1 active sync /dev/sdf
2 8 96 2 active sync /dev/sdg
4 8 112 3 active sync /dev/sdh
5 8 144 4 active sync /dev/sdj
root@GT110b:~#

まだ50%との事だったので、もう一日様子見。今朝になってStateがcleanになりArray Sizeも増えていたので、xfs_growfsでxfsファイルシステムに反映。

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 : Thu May 10 05:12:41 2018
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 : 18525

Number Major Minor RaidDevice State
0 8 64 0 active sync /dev/sde
1 8 80 1 active sync /dev/sdf
2 8 96 2 active sync /dev/sdg
4 8 112 3 active sync /dev/sdh
5 8 144 4 active sync /dev/sdj
root@GT110b:~# xfs_growfs /dev/md0
meta-data=/dev/md0 isize=256 agcount=32, agsize=68675072 blks
= sectsz=4096 attr=2
data = bsize=4096 blocks=2197601280, imaxpct=5
= sunit=128 swidth=384 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=521728, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 2197601280 to 2930135040
root@GT110b:~# df
Filesystem Size Used Avail Use% Mounted on
udev 12G 12K 12G 1% /dev
tmpfs 2.4G 4.4M 2.4G 1% /run
/dev/sda1 131G 8.2G 117G 7% /
none 4.0K 0 4.0K 0% /sys/fs/cgroup
none 5.0M 0 5.0M 0% /run/lock
none 12G 0 12G 0% /run/shm
none 100M 0 100M 0% /run/user
/dev/sdb1 4.6T 2.5T 1.8T 59% /home
/dev/sdc1 3.7T 2.3T 1.5T 62% /mnt/kids
/dev/sdd1 3.7T 3.4T 303G 92% /mnt/video
/dev/md0 11T 7.9T 3.1T 73% /mnt/raid
/dev/sdi1 1.8T 1.3T 421G 76% /mnt/backup
//landisk/disk1 1.4T 975G 420G 70% /mnt/landisk
//linkstation/share 1.9T 1.7T 160G 92% /mnt/linkstation
//readynas/Video 5.5T 4.7T 807G 86% /mnt/readynas

dfの空き容量も増えてひと安心。

root@GT110b:~# fgrep md0 /var/log/syslog
2018-05-08T01:58:08.417595+09:00 GT110b kernel: [ 7409.705589] md: reshape of RAID array md0
2018-05-08T13:38:12.466161+09:00 GT110b mdadm[2111]: Rebuild20 event detected on md device /dev/md0
2018-05-09T02:08:16.589925+09:00 GT110b mdadm[2111]: Rebuild40 event detected on md device /dev/md0
2018-05-09T15:28:20.997790+09:00 GT110b mdadm[2111]: Rebuild60 event detected on md device /dev/md0
2018-05-10T02:51:44.918767+09:00 GT110b mdadm[2111]: Rebuild81 event detected on md device /dev/md0
2018-05-10T05:12:41.825581+09:00 GT110b kernel: [191873.103299] md: md0: reshape done.
2018-05-10T05:12:41.969649+09:00 GT110b kernel: [191873.248230] md0: detected capacity change from 9001374842880 to 12001833123840
2018-05-10T05:12:41.973586+09:00 GT110b kernel: [191873.249265] VFS: busy inodes on changed media or resized disk md0
2018-05-10T05:12:42.037372+09:00 GT110b mdadm[2111]: RebuildFinished event detected on md device /dev/md0
root@GT110b:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid5 sdj[5] sdh[4] sdg[2] sdf[1] sde[0]
11720540160 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/5] [UUUUU]

unused devices:
root@GT110b:~#

今回は念の為/dev/md0をunmountしてオフライン作業した（9TBもバックアップするとこ無いので中身はそのまま）が、オンラインでもできちゃうみたいですな。スゲー

2018/05/10 on Yano's digital garage

WD30EZRX再登板