소프트웨어 레이드 관련 문의
글쓴이: hiseob / 작성시간: 일, 2013/04/28 - 11:15오후
이번에 3TB 하드 6개 구매해서 mdadm 을 이용한 소프트웨어 레이드를 시작 했습니다.
만들때는
mdadm --create --verbose /dev/md0 --level=5 --raid-devices=6 /dev/sd[bcdefg]1
이렇게 만들었고요.
정보를 보니
mdadm --examine /dev/sdb1
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 1f628251:73eaafcd:e5809b62:87bfac10
Name : nsys_gentoo:0 (local to host nsys_gentoo)
Creation Time : Sat Apr 27 15:07:39 2013
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
Array Size : 29302635520 (13972.59 GiB 15002.95 GB)
Used Dev Size : 5860527104 (2794.52 GiB 3000.59 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : active
Device UUID : fb96fcf5:d69cab3c:f014f85a:44966986
Update Time : Sun Apr 28 23:12:12 2013
Checksum : c8dd5122 - correct
Events : 100700
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAAAA ('A' == active, '.' == missing)cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4] [raid1] [raid10] [raid0] [linear] [multipath]
md0 : active raid5 sdb1[0] sdf1[4] sde1[3] sdg1[6] sdc1[1] sdd1[2]
14651317760 blocks super 1.2 level 5, 512k chunk, algorithm 2 [6/5] [UUUUU_]
[==============>......] recovery = 71.2% (2089250296/2930263552) finish=358.4min speed=39101K/sec
unused devices: <none>mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Sat Apr 27 15:07:39 2013
Raid Level : raid5
Array Size : 14651317760 (13972.59 GiB 15002.95 GB)
Used Dev Size : 2930263552 (2794.52 GiB 3000.59 GB)
Raid Devices : 6
Total Devices : 6
Persistence : Superblock is persistent
Update Time : Sun Apr 28 23:14:08 2013
State : clean, degraded, recovering
Active Devices : 5
Working Devices : 6
Failed Devices : 0
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 512K
Rebuild Status : 71% complete
Name : nsys_gentoo:0 (local to host nsys_gentoo)
UUID : 1f628251:73eaafcd:e5809b62:87bfac10
Events : 100835
Number Major Minor RaidDevice State
0 8 17 0 active sync /dev/sdb1
1 8 33 1 active sync /dev/sdc1
2 8 49 2 active sync /dev/sdd1
3 8 65 3 active sync /dev/sde1
4 8 81 4 active sync /dev/sdf1
6 8 97 5 spare rebuilding /dev/sdg1파일시스템 포맷은 이렇게 했습니다.
mkfs.ext4 -v -m 0.5 -E stride=128,stripe-width=640 /dev/md0
일단 정상적으로 동작이 되는걸로 보이긴 합니다.
질문은 앞으로 장애상황 대처를 위해서 해야할 것이 뭐가 있는지 궁금 합니다.
Forums:
댓글 달기