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kbzium
Tux's lil' helper
Joined: 31 Jul 2012
Posts: 146
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 Posted: Tue Apr 16, 2013 7:03 pm Post subject: Two virtual raid devices switch places every time I boot! |
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Hello,
I have two hard drives and there are two partitions on each. One pair of partitions is set to be raid0, and the other as raid1. The thing is that they go with somehow random identifier - they swap every time I boot (md126 and md127). It just changes my fstab configuration to be just the opposite, which is annoying!
I want it this way no-matter-what:
raid0 - /mnt/storage
raid1 - /mnt/secstorage
How to do this? I have no options left 
Thank you! |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54209
Location: 56N 3W
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| Posted: Tue Apr 16, 2013 8:11 pm Post subject: |
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kbzium,
Use blkid to determine the UUID of the filesystem on the raid set, say | Code: | | /dev/md125: UUID="741183c2-1392-4022-a1d3-d0af8ba4a2a8" TYPE="ext2" |
Be careful not to choose the UUID of one of the underlying devices, which looks like | Code: | | /dev/sdb1: UUID="9392926d-6408-6e7a-8663-82834138a597" TYPE="linux_raid_member" |
In your /etc/fstab put something like | Code: | | UUID=741183c2-1392-4022-a1d3-d0af8ba4a2a8 /boot ext2 noauto,noatime 1 2 |
This mounts the filesystem by UUID. The filesystem UUIDs are set at filesystem create time and are fixed regardless of the name of the /dev node they are attached to.
Trap for the unwary - you may not use UUIDs in grub.conf unless you also use an initrd to provide the userspace mount.
The example above is my /boot
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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