Am 14.04.2011 22:19, schrieb James: > >> *Head scratch* This, uhm, looks odd. No clue what to make of it. > > Ahhh, > > Don't give up just yet? > > I issued these commands: > > mdadm --create /dev/md127 --level=1 --raid-devices=2 > --metadata=0.90 /dev/sda1 /dev/sdb1 > > mdadm --create /dev/md125 --level=1 --raid-devices=2 > --metadata=0.90 /dev/sda3 /dev/sdb3 > mdadm: /dev/sda3 appears to be part of a raid array: > level=raid1 devices=2 ctime=Thu Apr 14 13:22:32 2011 > mdadm: /dev/sdb3 appears to be part of a raid array: > level=raid1 devices=2 ctime=Thu Apr 14 13:22:32 2011 > Continue creating array? y > > > mdadm --create /dev/md126 --level=1 --raid-devices=2 > --metadata=0.90 /dev/sda2 /dev/sdb2 > > I'm not sure if I just wiped the drives clean (empty)? > > If so, I'll have to start over.....? >
Ouch, I didn't think of that. Well, I guess it will not wipe it, it will merely re-sync the disks. Since they have been mirrors of each other before this action, you might be lucky and it keeps working. > mdadm --detail /dev/md1 > mdadm: cannot open /dev/md1: No such file or directory > > same now for md2 and md3... > Well, at least you are rid of the duplicate arrays. > Look (ma no hands!): > > livecd gentoo # mdadm --detail /dev/md125 > /dev/md125: > Version : 0.90 > Creation Time : Thu Apr 14 14:15:21 2011 > Raid Level : raid1 > Array Size : 1948227584 (1857.97 GiB 1994.99 GB) > Used Dev Size : 1948227584 (1857.97 GiB 1994.99 GB) > Raid Devices : 2 > Total Devices : 2 > Preferred Minor : 125 > Persistence : Superblock is persistent > > Update Time : Thu Apr 14 15:51:46 2011 > State : clean, resyncing > Active Devices : 2 > Working Devices : 2 > Failed Devices : 0 > Spare Devices : 0 > > Rebuild Status : 37% complete > > UUID : fa800cdb:33955cfd:cb201669:f728008a (local to host livecd) > Events : 0.6 > > Number Major Minor RaidDevice State > 0 8 3 0 active sync /dev/sda3 > 1 8 19 1 active sync /dev/sdb3 > > [...] > We'll see in a few hours.... > > > James > You can keep using it while it re-syncs. Re-syncing just means that you do not have any redundancy, yet. You can still read/write on the array. You will get or manipulate whatever mdadm thinks is the correct value for each block. That's also what will end up on both disks, ultimately. I guess you can even reboot but since your setup is not really persistent, I wouldn't try it. Regards, Florian Philipp
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