[CentOS] Recover RAID

Christopher Chan christopher.chan at bradbury.edu.hk
Thu Mar 4 02:10:27 UTC 2010

> raiddev /dev/md1
>          raid-level      0
>          nr-raid-disks   2
>          persistent-superblock 1
>          chunk-size     4
>          device          /dev/sda4
>          raid-disk       0
>          device          /dev/sdb2
>          raid-disk       1
> It says it can bring up md0 ok, but not md1.  Right now, I am going to
> try to restore the "unknown" partition that I deleted from drive 1 using
> the "unknown" partition from drive 2.
> Any ideas on how to get myself out of this mess?  I feel like I really
> messed it up good.  This is a server for our work, and we have a couple
> years worth of data on it, so I would really like to fix it rather than
> reinstall.

Sorry, recovery is impossible at this point. md1 is a raid0 device. 
Since you have toasted one member partition, the whole thing it toast. I 
recommend clubbing whoever set it up in the first place with a clueby4 
and then yourself.

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