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Re: [Qemu-devel] [PATCH v2 06/22] block: Add "supports_stats" field to B
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH v2 06/22] block: Add "supports_stats" field to BlockStats |
Date: |
Tue, 13 Oct 2015 16:38:30 +0100 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Fri, Oct 02, 2015 at 05:26:16PM +0300, Alberto Garcia wrote:
> query-blockstats always returns a BlockDeviceStats structure for each
> BDS, regardless of whether it implements accounting or not. Since the
> field is mandatory there's no way to tell that from the values alone.
>
> This field solves that problem by indicating which BDSs support I/O
> accounting.
I'm not sure I understand the problem.
If I/O accounting isn't being used then all fields will be 0?
- [Qemu-devel] [PATCH v2 00/22] Extended I/O accounting, Alberto Garcia, 2015/10/08
- [Qemu-devel] [PATCH v2 16/22] virtio-blk: Account for failed and invalid operations, Alberto Garcia, 2015/10/08
- [Qemu-devel] [PATCH v2 01/22] xen_disk: Account for flush operations, Alberto Garcia, 2015/10/08
- [Qemu-devel] [PATCH v2 04/22] util: Infrastructure for computing recent averages, Alberto Garcia, 2015/10/08
- [Qemu-devel] [PATCH v2 22/22] block: Update copyright of the accounting code, Alberto Garcia, 2015/10/08
- [Qemu-devel] [PATCH v2 05/22] block: Add idle_time_ns to BlockDeviceStats, Alberto Garcia, 2015/10/08
- [Qemu-devel] [PATCH v2 06/22] block: Add "supports_stats" field to BlockStats, Alberto Garcia, 2015/10/08
- Re: [Qemu-devel] [PATCH v2 06/22] block: Add "supports_stats" field to BlockStats,
Stefan Hajnoczi <=
[Qemu-devel] [PATCH v2 07/22] block: Add statistics for failed and invalid I/O operations, Alberto Garcia, 2015/10/08
[Qemu-devel] [PATCH v2 03/22] block: define 'clock_type' for the accounting code, Alberto Garcia, 2015/10/08
[Qemu-devel] [PATCH v2 09/22] block: Compute minimum, maximum and average I/O latencies, Alberto Garcia, 2015/10/08