Fragmentation Issue We Are Having

[Richard Scobie]

Brian Candler wrote:

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Ah, that's new to me. So with inode32 and
   sysctl fs.xfs.rotorstep=255
you can get roughly the same locality benefit for sequentially-written files
as inode64?  (Aside: if you have two processes writing files to two 
different
directories, will they end up mixing their files in the same AG? That
could hurt performance at readback time if reading them sequentially)

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The "filestreams" mount option may be of use here, see:

http://xfs.org/docs/xfsdocs-xml-dev/XFS_User_Guide//tmp/en-US/html/ch06s16.html

and page 17 of:

http://oss.sgi.com/projects/xfs/training/xfs_slides_06_allocators.pdf

Regards,

Richard