On Sun Jun 07, 2009 at 08:56:42PM -0500, Leslie Rhorer wrote: > > -----Original Message----- > > From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid- > > owner@xxxxxxxxxxxxxxx] On Behalf Of Carlos Carvalho > > Sent: Sunday, June 07, 2009 8:54 PM > > To: linux-raid@xxxxxxxxxxxxxxx > > Subject: RE: How to un-degrade an array after a totally spurious failure? > > > > Leslie Rhorer (lrhorer@xxxxxxxxxxx) wrote on 7 June 2009 20:43: > > >OK, what about a RAID 6 array with one failed disk? Is the remove & add > > >the best option there, or should one apply a different method? > > > > It is, since that's what the raid is for. It's still operational. > > We've done it here and it works. > > Well, yes, I know it should work. The question is, "Is it the best method?" > Yes - as the array is still active then it's likely to have changed since the drive failed. This means that stopping the array and re-assembling, forcing the failed drive active, could lead to corruption. Removing & adding it will ensure the data is updated to match the current array state. Of course, neither option should be pursued unless you know _exactly_ why the drive failed and know that it's safe to re-add it to the array. Cheers, Robin -- ___ ( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> | / / ) | Little Jim says .... | // !! | "He fallen in de water !!" |
Attachment:
pgpuMrXYa4bme.pgp
Description: PGP signature
