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From: | Dor Laor |
Subject: | Re: [Qemu-devel] [PATCH] block-raw: Make cache=off default again |
Date: | Mon, 22 Jun 2009 16:23:58 +0300 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Lightning/1.0pre Thunderbird/3.0b2 |
On 06/22/2009 04:08 PM, Anthony Liguori wrote:
Kevin Wolf wrote:Since the patch that suggested it woudl revert qcow2 to writeback caching, in fact none of the drivers has had cache=off as default any more. This patchrestores the desired behaviour.When has cache=off ever been the default?Moreover, why would we want to make it the default? A patch with this drastic of a change really need a more
It should be the default (or at least O_DSYNC) since plain users are not aware that writeback might
cause their image to get corrupted on host crash.
significant justification in the change log. Regards, Anthony Liguori
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