Hi again, I made a quick test, but that does not seem to work, at least with RAID-6. What I did was to create 4 loop devices of 128MB and then a RAID-6, metadata 1.1, on top of that. The I stopped the array and the loop, I added another 128MB (added as in "dd ... >> file"), run "losetup" again and "mdadm -A ...". Then "mdadm --grow --size=max ...", but the size of the array did not change from 256MB (2x128MB). The loop devices are 256MB (wc -c /dev/loop..). So, either I'm missing something or this type of grow does not seem to affect RAID-6. Any ideas? Thanks again, bye, pg On Fri, Apr 10, 2009 at 10:58:33PM +0100, Robin Hill wrote: > On Fri Apr 10, 2009 at 11:54:35PM +0200, Piergiorgio Sartor wrote: > > > Hi all, > > > > is it possible to grow a RAID-6, not by adding > > more drives, but by extending the partions which > > are composing the array? > > > > In other words, let's say I've "n" partitions of > > "x" GB forming a RAID-6 array. After some time I > > increase the size of each partition to "y" GB, of > > course y > x. > > Is it then possible to use the complete space > > growing the array? > > How? > > > Yes - "mdadm --grow --size=max /dev/mdX". You'll also need to grow the > filesystem afterwards of course. > > Cheers, > Robin > -- > ___ > ( ' } | Robin Hill <robin@xxxxxxxxxxxxxxx> | > / / ) | Little Jim says .... | > // !! | "He fallen in de water !!" | -- piergiorgio -- 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
