From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Andreas Dilger <adilger@clusterfs.com>
Cc: linux-ext4@vger.kernel.org, Takashi Sato <sho@tnes.nec.co.jp>
Subject: Re: Add EXT4_IOC_MIGRATE ioctl
Date: Tue, 12 Jun 2007 15:21:15 +0530 [thread overview]
Message-ID: <466E6C93.2070205@linux.vnet.ibm.com> (raw)
In-Reply-To: <20070612092429.GK5181@schatzie.adilger.int>
Andreas Dilger wrote:
> On Jun 12, 2007 12:17 +0530, Aneesh Kumar K.V wrote:
>> The below patch add ioctl for migrating ext3 indirect block mapped inode
>> to ext4 extent mapped inode.
>
> How does this relate to the migrate ioctl used by Takashi in the current
> ext4 defragmenter patch series?
You mean EXT4_IOC_DEFRAG ?. I guess the last version of defragmentation
patches (ver4) handled only extent mapped inode.
Ideally, the code shouldn't really care
> whether it is migrating from/to a block-mapped or extent-mapped file.
>
>
As per the last discussion with Takashi the defragmentation is going to
work on extent mapped file only. The plan right now is to convert a
block mapped inode to extent mapped inode and then defrag. Later we
update the user space tool to issue two ioctl if the user wanted to
defrag a block mapped inode. There will also be a separate command line
option to just migrate.
-aneesh
prev parent reply other threads:[~2007-06-12 9:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-12 6:47 Add EXT4_IOC_MIGRATE ioctl Aneesh Kumar K.V
2007-06-12 9:24 ` Andreas Dilger
2007-06-12 9:51 ` Aneesh Kumar K.V [this message]
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