| To: | MichaÅ Pecio <michal.pecio@xxxxxxxxx> |
|---|---|
| Subject: | Re: Fixing XFS RAID - does XFS ever issue non-aligned discards? |
| From: | Dave Chinner <david@xxxxxxxxxxxxx> |
| Date: | Wed, 16 Dec 2015 09:19:10 +1100 |
| Cc: | xfs@xxxxxxxxxxx |
| Delivered-to: | xfs@xxxxxxxxxxx |
| In-reply-to: | <20151215141605.5b60d336@sauron> |
| References: | <20151215141605.5b60d336@sauron> |
| User-agent: | Mutt/1.5.21 (2010-09-15) |
On Tue, Dec 15, 2015 at 02:16:05PM +0100, MichaÅ Pecio wrote: > Hi, > > I'm using XFS with bsize=4096 on RAID0 of two Intel 320 SSDs under > Linux 3.18 LTS. I'm wondering if it's correct to assume that discards > issued by XFS will always be multiples of 4k and 4k-aligned? Yes. Discards are only done on filesystem blocks, so will have filesystem block granularity/alignment. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx |
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