From: Paolo Bonzini <pbonzini@redhat.com>
To: Andrew Martin <amartin@xes-inc.com>
Cc: Stefan Hajnoczi <stefanha@gmail.com>, qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later
Date: Wed, 27 Aug 2014 16:47:46 -0400 (EDT) [thread overview]
Message-ID: <1831930439.37152369.1409172466382.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <1058443416.220161.1409165212171.JavaMail.zimbra@xes-inc.com>
> > Just the lack of fdatasyncs.
>
> I also did not see any fdatasyncs when using cache=none - would that also be
> explained by this bug?
Yes, cache=none and cache=writeback are the same as far as the _disk_ cache
is concerned, and you need fdatasyncs to flush the disk cache too.
Paolo
next prev parent reply other threads:[~2014-08-27 20:48 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1009168463.49610.1408133034828.JavaMail.zimbra@xes-inc.com>
2014-08-15 20:18 ` [Qemu-devel] Using cache=writeback safely on qemu 1.4.0 and later Andrew Martin
2014-08-19 14:59 ` Stefan Hajnoczi
2014-08-19 23:20 ` Andrew Martin
2014-08-21 12:59 ` Stefan Hajnoczi
2014-08-25 18:13 ` Andrew Martin
2014-08-26 7:03 ` Paolo Bonzini
2014-08-27 14:23 ` Andrew Martin
2014-08-27 14:34 ` Paolo Bonzini
2014-08-27 18:46 ` Andrew Martin
2014-08-27 20:47 ` Paolo Bonzini [this message]
2014-08-28 10:22 ` Stefan Hajnoczi
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