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Re: [Qemu-block] [PATCH v3 0/4] qcow2: async handling of fragmented io
From: |
Max Reitz |
Subject: |
Re: [Qemu-block] [PATCH v3 0/4] qcow2: async handling of fragmented io |
Date: |
Thu, 15 Aug 2019 16:09:17 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 15.08.19 14:10, Vladimir Sementsov-Ogievskiy wrote:
> Hi all!
>
> Here is an asynchronous scheme for handling fragmented qcow2
> reads and writes. Both qcow2 read and write functions loops through
> sequential portions of data. The series aim it to parallelize these
> loops iterations.
> It improves performance for fragmented qcow2 images, I've tested it
> as described below.
Looks good to me, but I can’t take it yet because I need to wait for
Stefan’s branch to be merged, of course.
Speaking of which, why didn’t you add any tests for the *_part()
methods? I find it a bit unsettling that nothing would have caught the
bug you had in v2 in patch 3.
Max
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- [Qemu-block] [PATCH v3 2/4] block/qcow2: refactor qcow2_co_preadv_part, (continued)
- [Qemu-block] [PATCH v3 2/4] block/qcow2: refactor qcow2_co_preadv_part, Vladimir Sementsov-Ogievskiy, 2019/08/15
- [Qemu-block] [PATCH v3 4/4] block/qcow2: introduce parallel subrequest handling in read and write, Vladimir Sementsov-Ogievskiy, 2019/08/15
- [Qemu-block] [PATCH v3 1/4] block: introduce aio task pool, Vladimir Sementsov-Ogievskiy, 2019/08/15
- [Qemu-block] [PATCH v3 3/4] block/qcow2: refactor qcow2_co_pwritev_part, Vladimir Sementsov-Ogievskiy, 2019/08/15
- Re: [Qemu-block] [PATCH v3 0/4] qcow2: async handling of fragmented io, Max Reitz, 2019/08/15
- Re: [Qemu-block] [PATCH v3 0/4] qcow2: async handling of fragmented io,
Max Reitz <=