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Re: [Qemu-devel] [PATCH v2 0/2] Add cache mode option to qemu-iotests
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH v2 0/2] Add cache mode option to qemu-iotests |
Date: |
Tue, 19 Nov 2013 11:21:22 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Am 19.11.2013 um 07:45 hat Fam Zheng geschrieben:
> The first patch adds "-c <mode>" option to ./check and convert "-nocache" to
> an
> alias to "-c none". The mode is used in qemu-io.
>
> The second patch modifies iotests.py to use the cache mode option in qemu
> drive
> command line.
Okay, I gave it some testing, too, and it looks like we need some
additional changes. There are some test cases that use:
_unsupported_qemu_io_options --nocache
Which obviously doesn't work any more. We need to replace it by a check
against $CACHEMODE (or, perhaps preferably, even override it
automatically, so that test cases aren't left out just because of the
cache mode)
Test case 026 uses the option of having a 026.out.nocache, which differs
from the normal output. I suspect the correct differentiation is here
between writethrough and writeback modes. And of course, grepping for
'--nocache' to detect the condition doesn't work any more.
Kevin