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Re: [Qemu-block] [PATCH v2 6/9] blkdebug: Sanity check block layer guara
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From: |
Max Reitz |
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Subject: |
Re: [Qemu-block] [PATCH v2 6/9] blkdebug: Sanity check block layer guarantees |
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Date: |
Thu, 17 Nov 2016 23:36:51 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
On 17.11.2016 21:13, Eric Blake wrote:
> Commits 04ed95f4 and 1a62d0ac updated the block layer to auto-fragment
> any I/O to fit within device boundaries. Additionally, when using a
> minimum alignment of 4k, we want to ensure the block layer does proper
> read-modify-write rather than requesting I/O on a slice of a sector.
> Let's enforce that the contract is obeyed when using blkdebug. For
> now, blkdebug only allows alignment overrides, and just inherits other
> limits from whatever device it is wrapping, but a future patch will
> further enhance things.
>
> Signed-off-by: Eric Blake <address@hidden>
> ---
> block/blkdebug.c | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
Reviewed-by: Max Reitz <address@hidden>
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- Re: [Qemu-block] [PATCH v2 5/9] block: Pass unaligned discard requests to drivers, (continued)
Re: [Qemu-block] [PATCH v2 5/9] block: Pass unaligned discard requests to drivers, Max Reitz, 2016/11/17
Re: [Qemu-block] [PATCH v2 5/9] block: Pass unaligned discard requests to drivers, Kevin Wolf, 2016/11/22
[Qemu-block] [PATCH v2 6/9] blkdebug: Sanity check block layer guarantees, Eric Blake, 2016/11/17
- Re: [Qemu-block] [PATCH v2 6/9] blkdebug: Sanity check block layer guarantees,
Max Reitz <=
[Qemu-block] [PATCH v2 8/9] blkdebug: Add ability to override unmap geometries, Eric Blake, 2016/11/17
[Qemu-block] [PATCH v2 7/9] blkdebug: Add pass-through write_zero and discard support, Eric Blake, 2016/11/17
Re: [Qemu-block] [PATCH v2 for-2.8* 0/9] Fix block regressions, add blkdebug tests, Kevin Wolf, 2016/11/22