[linux-lvm] heat map

matthew patton pattonme at yahoo.com
Mon Jun 24 07:04:00 UTC 2013

If some older man pages are to be believed there once was a capability to keep a heat map of busy extents. Is there a way to revive that capability? I expect "last I/O within 30 seconds, 5 minute, 15minute" is probably sufficient for most uses as well as summary counters along the same lines.

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