From: Anthony Liguori <anthony@codemonkey.ws>
To: Alexander Graf <agraf@suse.de>
Cc: kwolf@redhat.com, qemu-devel@nongnu.org, hch@lst.de
Subject: [Qemu-devel] Re: [PATCH] Add cache=volatile parameter to -drive
Date: Mon, 17 May 2010 08:09:27 -0500 [thread overview]
Message-ID: <4BF14007.2060603@codemonkey.ws> (raw)
In-Reply-To: <8397DB3E-B470-4FBD-903E-8B547631A825@suse.de>
On 05/17/2010 08:02 AM, Alexander Graf wrote:
>> My concern is that ext3 exaggerates the cost of fsync() which will result in diminishing value over time for this feature as people move to ext4/btrfs.
>>
> There will be ext3 file systems for years out. Just because people can use better and faster file systems doesn't mean they do. And I'm sure they can't always choose. If anything, I can try and see what the numbers look like for xfs.
>
But ext3 with barrier=1 is pretty uncommon in practice. Another data
point would be an ext3 host file system with barrier=0.
Regards,
Anthony Liguori
>
> Alex
>
>
next prev parent reply other threads:[~2010-05-17 13:09 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-17 10:14 [Qemu-devel] [PATCH] Add cache=volatile parameter to -drive Alexander Graf
2010-05-17 10:42 ` [Qemu-devel] " Kevin Wolf
2010-05-17 12:58 ` Anthony Liguori
2010-05-17 13:02 ` Alexander Graf
2010-05-17 13:09 ` Anthony Liguori [this message]
2010-05-17 13:17 ` Alexander Graf
2010-05-17 13:26 ` Anthony Liguori
2010-05-17 14:04 ` Alexander Graf
2010-05-17 14:22 ` Alexander Graf
2010-05-17 15:16 ` Anthony Liguori
2010-05-17 16:23 ` Paul Brook
2010-05-17 16:26 ` Anthony Liguori
2010-05-17 16:28 ` Alexander Graf
2010-05-17 20:07 ` Jamie Lokier
2010-05-18 7:42 ` Kevin Wolf
2010-05-25 17:59 ` Alexander Graf
2010-05-25 18:48 ` Anthony Liguori
2010-05-25 19:01 ` Alexander Graf
2010-05-26 13:09 ` Avi Kivity
2010-05-25 21:01 ` Aurelien Jarno
2010-05-26 1:31 ` Anthony Liguori
2010-05-26 8:43 ` Kevin Wolf
2010-05-26 13:42 ` Anthony Liguori
2010-05-26 14:03 ` Kevin Wolf
2010-05-26 14:08 ` Anthony Liguori
2010-05-26 14:26 ` Kevin Wolf
2010-05-26 14:13 ` Aurelien Jarno
2010-05-26 8:52 ` Aurelien Jarno
2010-05-26 9:16 ` Kevin Wolf
2010-05-26 13:48 ` Anthony Liguori
2010-05-26 14:12 ` Aurelien Jarno
2010-05-26 14:19 ` Anthony Liguori
2010-05-26 15:40 ` Aurelien Jarno
2010-05-26 16:11 ` Anthony Liguori
2010-05-26 14:27 ` Paolo Bonzini
2010-05-26 13:06 ` Avi Kivity
2010-05-26 13:50 ` Anthony Liguori
2010-05-26 15:13 ` Avi Kivity
2010-05-17 15:11 ` Anthony Liguori
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