From: Phillip Susi <psusi@ubuntu.com>
To: linux-ext4@vger.kernel.org
Subject: Re: [RFC] ext4: block reservation allocation
Date: Thu, 08 Mar 2012 11:39:11 -0500 [thread overview]
Message-ID: <4F58E0AF.3010207@ubuntu.com> (raw)
In-Reply-To: <20120227090901.GA13953@gmail.com>
On 2/27/2012 4:09 AM, Zheng Liu wrote:
> Hi list,
>
> Now, in ext4, we have multi-block allocation and delay allocation. They work
> well for most scenarios. However, in some specific scenarios, they cannot help
> us to optimize block allocation. For example, the user may want to indicate some
> file set to be allocated at the beginning of the disk because its speed in this
> position is faster than its speed at the end of disk.
I thought this could be done with the new defrag api. I thought it had
a way to allocate a new donor file in a specific location so you could
then migrate the target file to those specific donor blocks.
next prev parent reply other threads:[~2012-03-08 16:39 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-27 9:09 [RFC] ext4: block reservation allocation Zheng Liu
2012-02-27 12:00 ` Lukas Czerner
2012-02-27 13:18 ` Zheng Liu
2012-02-27 13:33 ` Lukas Czerner
2012-02-27 15:09 ` Zheng Liu
2012-02-27 15:16 ` Lukas Czerner
2012-02-27 15:24 ` Lukas Czerner
2012-02-28 3:34 ` Zheng Liu
2012-02-27 21:16 ` Andreas Dilger
2012-02-27 13:36 ` Yongqiang Yang
2012-02-27 21:11 ` Andreas Dilger
2012-02-27 15:37 ` Eric Sandeen
2012-02-27 17:44 ` Ted Ts'o
2012-02-27 22:00 ` Andreas Dilger
2012-02-28 4:05 ` Zheng Liu
2012-03-08 16:39 ` Phillip Susi [this message]
[not found] ` <CAGpXXZ+z-HVECg+EAe4-d20BkjhX7bjxaHOs2_KBbgQaJwpCHQ@mail.gmail.com>
2012-03-11 17:32 ` Phillip Susi
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