I'm working on setting up a new server and I've decided to run a software raid with a scheme like
Code:
/boot md0 raid 1 300mb
/tmp md1 raid 10 4gb
md2 raid 10 swap
/ md3 raid 10 452gb
that is my layout. Now my question is, the raid 10 arrays is how do I figure out which drivers are mirrors?
Code:
]# cat /proc/mdstat
Personalities : [raid10] [raid1]
md0 : active raid1 sda1[0] sdc1[2] sdb1[1] sdd1[3]
307136 blocks super 1.0 [4/4] [UUUU]
md1 : active raid10 sdb2[1] sdc2[2] sda2[0] sdd2[3]
4191232 blocks super 1.1 512K chunks 2 near-copies [4/4] [UUUU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md3 : active raid10 sdc4[2] sdb4[1] sdd4[3] sda4[0]
480965632 blocks super 1.1 512K chunks 2 near-copies [4/4] [UUUU]
bitmap: 0/4 pages [0KB], 65536KB chunk
md2 : active raid10 sdd3[3] sdb3[1] sdc3[2] sda3[0]
4191232 blocks super 1.1 512K chunks 2 near-copies [4/4] [UUUU]
Detail of md3
Code:
mdadm --detail /dev/md3
/dev/md3:
Version : 1.1
Creation Time : Sun Mar 30 12:48:16 2014
Raid Level : raid10
Array Size : 480965632 (458.68 GiB 492.51 GB)
Used Dev Size : 240482816 (229.34 GiB 246.25 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sun Mar 30 16:39:28 2014
State : active
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Layout : near=2
Chunk Size : 512K
Name : host.domain.cxm:3 (local to host host.domain.cxm)
UUID : f3a49ee1:d9a397c6:efe40451:f051fa1b
Events : 1266
Number Major Minor RaidDevice State
0 8 4 0 active sync /dev/sda4
1 8 20 1 active sync /dev/sdb4
2 8 36 2 active sync /dev/sdc4
3 8 52 3 active sync /dev/sdd4
