Re: Raid 5 Problem

Justin Piszcz wrote:

You have another issue here though, it looks like your "few" attempts have
lead to multiple RAID superblocks.  I have always wondered how one can 
clean
this up without dd if=/dev/zero of=/dev/dsk & (for each disk, wipe it) 
to get
rid of them all, you should only have [1] /dev/md0 for your raid 5, not 3.

Well - 0.9 superblock is 4K at 64K boundary, at least 64K from the end 
of the device, but less 128K (man 4 md). If a filesystem on some 
partition taking up that space *didn't* overwrite this space with its 
[meta]data (check with debugfs, xfs_db, etc.), just clean it up 
*carefully* with dd or hexeditor.