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Re: Fragmentation Issue We Are Having

To: David Fuller <dfuller@xxxxxxxxx>
Subject: Re: Fragmentation Issue We Are Having
From: Brian Candler <B.Candler@xxxxxxxxx>
Date: Fri, 13 Apr 2012 08:19:05 +0100
Cc: xfs@xxxxxxxxxxx
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On Thu, Apr 12, 2012 at 05:09:40PM -0700, David Fuller wrote:
>    The total LVM volume group is 4.5 TB.  The logical volume is around
>    2.3TB where the mysql data

Hence you have a 2.3TB XFS filesystem? You need inode64. The side warning
"performance sucks" is very true.  In particular, if you create a bunch of
files in the same directory, without inode64 XFS will scatter the extents
all over the disk rather than trying to allocate them next to each other
(possibly not a problem if you're only storing mysql data chunks though)

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