On 07/19/2010 09:28 PM, Konstantin Svist wrote:

Can someone confirm that this command should work to revert the size?
mdadm --grow -z 879100608 --backup-file=/root/grow_md0_size_revert.bak 
/dev/md0

Finally sat down and thought about it - created a temporary raid using 
/dev/ram## and copied some files to it, did the same operations on it.
Amazingly, all the files came back. Will see if the real thing works too