Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support

[RFC PATCHSET block#for-2.6.36-post] block: convert to REQ_FLUSH/FUA · Tejun Heo <tj@kernel.org> · 2010-08-16
[PATCH 1/5] block/loop: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-16
[PATCH 3/5] lguest: replace VIRTIO_F_BARRIER support with VIRTIO_F_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-16
Re: [PATCH 3/5] lguest: replace VIRTIO_F_BARRIER support with VIRTIO_F_FLUSH support · Tejun Heo <tj@kernel.org> · 2010-08-19
[PATCH 4/5] md: implment REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-16
Re: [PATCH 4/5] md: implment REQ_FLUSH/FUA support · Neil Brown <hidden> · 2010-08-24
[PATCH UPDATED 4/5] md: implment REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-25
Re: [PATCH UPDATED 4/5] md: implment REQ_FLUSH/FUA support · Neil Brown <hidden> · 2010-08-25
[PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-16
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Mike Snitzer <hidden> · 2010-08-16
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-17
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Christoph Hellwig <hch@lst.de> · 2010-08-17
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Mike Snitzer <hidden> · 2010-08-17
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-17
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Mike Snitzer <hidden> · 2010-08-17
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-18
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Kiyoshi Ueda <hidden> · 2010-08-19
Re: [PATCH 5/5] dm: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-19
[PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-16
Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support · Christoph Hellwig <hch@lst.de> · 2010-08-16
Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-17
Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support · Christoph Hellwig <hch@lst.de> · 2010-08-17
Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-17
Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support · Rusty Russell <hidden> · 2010-08-18
Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support · Rusty Russell <hidden> · 2010-08-17
Re: [PATCH 2/5] virtio_blk: implement REQ_FLUSH/FUA support · Tejun Heo <tj@kernel.org> · 2010-08-17
[PATCH 2/5 UPDATED] virtio_blk: drop REQ_HARDBARRIER support · Tejun Heo <tj@kernel.org> · 2010-08-19

From: Rusty Russell <hidden>
Date: 2010-08-18 10:22:02
Also in: dm-devel, linux-fsdevel, linux-raid, linux-scsi, lkml

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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