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Re: file system defragmentation

To: linux-xfs@xxxxxxxxxxx
Subject: Re: file system defragmentation
From: Cosmo Nova <cs_mcc98@xxxxxxxxxxx>
Date: Mon, 17 Jul 2006 00:36:09 -0700 (PDT)
In-reply-to: <43311567.3060208@tlinx.org>
References: <4f52331f050826001612f8e323@mail.gmail.com> <20050826101131.GA24544@ii.uib.no> <4f52331f0508260848782f240a@mail.gmail.com> <43128F82.4010004@tlinx.org> <4312913F.6040205@coremetrics.com> <43311567.3060208@tlinx.org>
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Hi, you mentioned delayed allocation. What is the size of the buffer holding
the data, before they're actually written to disk? How can it tackle growing
files?

If I have a DVR system of 16 channels. They keep writing data to the disk in
pieces of video files. I read some spec of xfs. Apart from extend-based
allocation, there're allocaiton groups in xfs. I would like to ask, does
XFS's allocation groups work similar as JFS's, which would lock an
allocation group for individual file write? How does the allocation group in
XFS work? And how would it help the fragmentation problem?

Thankyou!
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