linux-ext4 - Re: Ongoing data reorganization/defragmentation?

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Message-ID: <5051CF8E.1090000@cube.nornet.local>
Date:	Thu, 13 Sep 2012 14:20:30 +0200
From:	"norritt" <norritt@...nline.de>
To:	linux-ext4@...r.kernel.org
Subject: Re: Ongoing data reorganization/defragmentation?

On 12.09.2012 19:35, Andreas Dilger wrote:
> On 2012-09-12, at 10:36, norritt@...nline.de wrote:
>
>> Ongoing data reorganization/defragmentation?
>>
>> So my question is, does ext4 reorganize data when it encounters fragmented files? If so, is there a way to disable that feature which would not do any good on SSDs? Is there anything else to consider when using ext4 on SSDs, except the things I mentioned above?
> No, there is no such background reorganization happening of allocated files. With "delalloc" there is batching of block allocations to try and optimize the initial block selection, but it is static after this time.
>
> Cheers, Andreas
Hi Andreas,

thank you for the quick reply and clearing up the rumours about ext4. 
Its good to know for sure, that ext4 doesn't reorganize data, once it 
has been written to the disk.

Regards Nor
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