> -----Original Message----- > From: NeilBrown [mailto:neilb@xxxxxxx] > Sent: Thursday, May 12, 2011 8:23 PM > To: lrhorer@xxxxxxxxxxx > Cc: linux-raid@xxxxxxxxxxxxxxx > Subject: Re: Growing a RAID array > > On Thu, 12 May 2011 20:02:01 -0500 "Leslie Rhorer" <lrhorer@xxxxxxxxxxx> > wrote: > > > > > I am shortly going to be growing a 10 drive RAID6 array with two > > additional drives. Can this be done in a single grow operation by > setting > > n=12, or do I have to grow it 1 drive at a time? > > > > Experiment with loop-back devices created on modest sized files. > > > (but yes, you can grow by any number you like. You should test the drives > fairly heavily first, because if they both die during the reshape, you > lose > your data). Actually, the "drives" won't be physical drives, but RAID0 volumes made of 2 drives each. 'Ugly, I know, but I really have little choice for the time being. As to losing the data, this is a backup system in the first place, and all its data is backed up to offline storage, as well, so a loss of data would not be the most hideous thing ever. All four drives have been operating continuously without error for over a year, having been completely read and written over several times, so I'm pretty confidant of their reliability, enough so I don't think any additional testing is worth the time and effort. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
