Gsacapital!
Robin Hill wrote:
On Fri Dec 11, 2009 at 02:55:31PM +0000, Cat'Killer wrote:
I found a way using Doug Gilbert's great sg3utils to zero all these
disks in a very efficient manner, using sgp_dd, at near drive
bandwidth, and proceeded to zero all the disks fully in about 4 hours!
Once done, I then created a RAID 5 on 10 disks, waited for the rebuild
to complete, stopped the array using mdadm, and dumped each of the
RAID's components superblocks to files.
<-snip->
The create worked fine and I waited for the rebuild to be complete
before stopping the array and dumping the SBs.
I then proceeded to write these same superblocks to 10 new similar
disks in a different system.
You could just do the create with --assume-clean, which should take very
little time at all. If the drives were zeroed initially then this will
give you valid parity data.
Cheers,
Robin
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