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Re: [dm-devel] [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support
- From: Rusty Russell <rusty rustcorp com au>
- To: Christoph Hellwig <hch lst de>
- Cc: tytso mit edu, linux-scsi vger kernel org, linux-ide vger kernel org, jaxboe fusionio com, jack suse cz, mst redhat com, linux-kernel vger kernel org, linux-raid vger kernel org, linux-fsdevel vger kernel org, dm-devel redhat com, James Bottomley suse de, konishi ryusuke lab ntt co jp, Tejun Heo <tj kernel org>, vst vlnb net, rwheeler redhat com, swhiteho redhat com, chris mason oracle com
- Subject: Re: [dm-devel] [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support
- Date: Wed, 18 Aug 2010 19:52:02 +0930
On Tue, 17 Aug 2010 10:53:27 pm Christoph Hellwig wrote:
> Given how little testing lguest gets compared to qemu I really don't
> want a protocol addition for it unless it really buys us something.
> Once we're done with this barrier conversion I plan into benchmarking
> FUA and a pre-flush tag on the command for virtio in real life setups,
> and see if it actually buys us anything.
Absolutely. Lguest should follow, not lead!
Rusty.
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