Hi, Thanks for the response. Sounds like I should just connect two drives and create in degraded mode. I have two spare ports so can do that. Was hoping to do it with minimal or even no downtime with growing but it sounds like that'd be difficult and risky. S On Sat, Oct 06, 2007 at 12:46:17PM +1000, Eyal Lebedinsky wrote: > Shane, > > Please take the following with some suspicion. > > I used raidreconf to add drives to an array, so I assume > the grow functionality can at least do the same. > > I wonder: if you have less than 1TB of data then you can: > 1 fail one 320GB disk (array now degraded!) > 2 use the port to install 1x1TB as a degraded 2-disk RAID5 > 3 copy all the data across > 4 remove the 5x320GB > 5 install the other 2x1TB > may need to resync the 2x before growing to 3x? > 6 grow to 3x1TB RAID5 > > If you *do* have a spare port then in step 2 you can create > a degraded 3x1TB and step 6 is a simple resync when you add > the missing third disk. You can copy the full 1.6TB across > in this case. > > Naturally, all this "degraded" means there is a real risk to > your data for a few hours, but you knew that. > > However, when I do not have ports to play with I take the > slow solution and create the new RAID externally (using USB > or another computer over a net - there is always another > computer around for this job). > > Good luck. > > Eyal > > Shane wrote: >> Hello all, >> I have a raid5 softraid array using 6x320GB SATA drives. I >> would like to reconfigure it to be 3x1tb SATA. Is there a >> way to do this using the grow feature of mdadm. IE by >> swapping 3 of the 320GB drives out for the 3 1TB drives >> allowing the resyncs to occur between swapping and then >> somehow tell mdadm to take the remaining three 320GB drives >> out of the array or would I need to just create a new array >> somehow, copy the data over and just shut the first array >> right down? >> Thanks, >> Shane > > -- > Eyal Lebedinsky (eyal@xxxxxxxxxxxxxx) > - > 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 -- http://www.cm.nu/~shane/ - 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
