| To: | Peter Cordes <peter@xxxxxxxxx> |
|---|---|
| Subject: | Re: RAID5/6 writes |
| From: | Andi Kleen <andi@xxxxxxxxxxxxxx> |
| Date: | Wed, 01 Oct 2008 21:36:13 +0200 |
| Cc: | xfs@xxxxxxxxxxx |
| In-reply-to: | <20081001175237.GJ32037@cordes.ca> (Peter Cordes's message of "Wed, 01 Oct 2008 14:52:37 -0300") |
| References: | <20081001175237.GJ32037@cordes.ca> |
| Sender: | xfs-bounce@xxxxxxxxxxx |
| User-agent: | Gnus/5.1008 (Gnus v5.10.8) Emacs/21.3 (gnu/linux) |
Peter Cordes <peter@xxxxxxxxx> writes: > > XFS knows (or should have been told by the admin with mkfs!) what the > stripe geometry is: block size and stripe width. So it could apply > this optimization only if it would make a write cover more whole > blocks or whole stripes. It's a nice idea, but I don't think XFS knows the actual RAID level, only the stripes. And for 0/1 it wouldn't be a good idea. -Andi |
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