On 25/01/13 12:22, Asif Iqbal wrote:

On Thu, Jan 24, 2013 at 8:09 PM, Brad Campbell [off-list ref] wrote:

quoted

On 25/01/13 09:02, Asif Iqbal wrote:

quoted

I was hoping to grow the size of the raid10. I was following this link
https://raid.wiki.kernel.org/index.php/Growing#Expanding_existing_partitions

Re-read the second sentence on the first line of that page.

doh! so I can only grow raid level 1/4/5/6

ok, can you suggest how can I increase the /dir (/dev/md10) with bigger disks?

I already backed up the data.

does linux software raid allow disks of different sizes in raid10? I
did not see much discussion
of raid level 10 in that wiki page.

From my understanding, there are two methods:
1) Create new RAID10, dd old RAID10 to new one, expand
filesystem/lvm/whatever is on the RAID10
2) Don't use RAID10, use RAID1 + linear. Don't increase the size of
members, only add additional pairs at the end of the linear array.
3) The one exception to 2 is that you can expand the size of the last
pair, but this is somewhat tricky. I've done this successfully twice,
but I doubt you really want to be using linear anyway.

Regards,
Adam

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