Joshua West wrote:
J.B.,
Are you making use of LVM snapshots by any chance? I've read reports of
extremely awful performance as a result of LVM2 CoW code -- whether
you're on the trunk volume or any snapshot volumes:
http://www.nikhef.nl/~dennisvd/lvmcrap.html
1GB took 20sec to write w/o snapshots, 16min with snapshots!
If you're using LVM snapshots on that host, then perhaps that explains
the performance penalties you've noticed.
Nope, no snapshots.
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