[CentOS] LVM overhead? Does it cripple I/O?

Sun Aug 19 22:16:13 UTC 2012
Smithies, Russell <Russell.Smithies at agresearch.co.nz>

For a high-performance system (64-cores, 512GB RAM, 5TB local disk, 110TB NFS-mounted storage) is there any advantage of dropping lvm and mounting partitions directly?
We're not planning on changing partition sizes, but if we did we'd probably do a full rebuild.
Has anyone done performance testing to show that lvm isn't crippling I/O?



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