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Vieri l33t
Joined: 18 Dec 2005 Posts: 870
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Posted: Mon Feb 17, 2014 5:50 pm Post subject: [SOLVED] Gentoo mdadm --detail vs. /proc/mdstat |
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Hi,
I'm puzzled as to why my /proc/mdstat states that I have 3 RAID1 sets with 2 disks and 3 different partitions while mdadm --detail gives me a whole different result.
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livecd ~ # cat /proc/mdstat
Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] [linear] [multipath]
md4 : active raid1 sdb4[1] sda4[0]
38337408 blocks [2/2] [UU]
md2 : active raid1 sdb2[1] sda2[0]
131008 blocks [2/2] [UU]
md1 : active raid1 sdb1[1] sda1[0]
1984 blocks [2/2] [UU]
unused devices: <none>
livecd ~ # mdadm --detail /dev/md1
/dev/md1:
Version : 0.90
Creation Time : Mon Feb 17 17:58:10 2014
Raid Level : raid1
Array Size : 1984
Used Dev Size : 1984
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Mon Feb 17 18:30:16 2014
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 67beaa32:0d1d851a:cb201669:f728008a (local to host livecd)
Events : 0.18
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
livecd ~ # mdadm --detail /dev/md2
/dev/md2:
Version : 0.90
Creation Time : Mon Feb 17 17:58:10 2014
Raid Level : raid1
Array Size : 1984
Used Dev Size : 1984
Raid Devices : 2
Total Devices : 2
Preferred Minor : 1
Persistence : Superblock is persistent
Update Time : Mon Feb 17 18:31:44 2014
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : 67beaa32:0d1d851a:cb201669:f728008a (local to host livecd)
Events : 0.18
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 17 1 active sync /dev/sdb1
livecd ~ # mdadm --detail /dev/md4
mdadm: md device /dev/md4 does not appear to be active.
livecd ~ # ls /dev/md*
/dev/md1 /dev/md2 /dev/md3 /dev/md4 /dev/mdev.seq
/dev/md:
125 126 127
livecd ~ # mdadm --detail /dev/md/127
mdadm: cannot open /dev/md/127: No such file or directory
livecd ~ # mdadm --detail /dev/md/126
mdadm: cannot open /dev/md/126: No such file or directory
livecd ~ # mdadm --detail /dev/md/125
mdadm: cannot open /dev/md/125: No such file or directory
livecd ~ # mdadm --detail /dev/md3
mdadm: md device /dev/md3 does not appear to be active.
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What's wrong here or what can I try to debug this?
Thanks,
Vieri
Last edited by Vieri on Thu Feb 20, 2014 6:58 pm; edited 1 time in total |
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spike88 n00b
Joined: 16 Oct 2012 Posts: 17
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Posted: Mon Feb 17, 2014 10:47 pm Post subject: |
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Did you assemble /dev/md4 like the others I do not mean to insult intelligence by asking this just needed to know _________________ Gentoo Rocks thanks! |
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Vieri l33t
Joined: 18 Dec 2005 Posts: 870
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Posted: Tue Feb 18, 2014 8:19 am Post subject: |
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Yes, exactly the same way, ie. mdadm --create --verbose /dev/md4 --name=4 --level=mirror --raid-devices=2 --metadata=0.90 /dev/sda4 /dev/sdb4
Also notice the output of mdadm --detail /dev/md2 and mdadm --detail /dev/md1... same output?! That looks odd. |
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