Wafl free space fragmentation most likely. Reallocate all volumes in the affected aggregate.
Do not reallocate the _aggregate_.
Sent from my iPhone
On Sep 13, 2013, at 1:06 PM, Fred Grieco fredgrieco@yahoo.com wrote:
What kinds of things can cause a high CP_reads/writes ratio? And what can I do about it?
I have an Oracle system with ASM that doing writes in a 15 minute cycle, and it causes a lot of writes with CP reads. The oracle ASM luns are basically the only thing on the aggregate. Disk alignment is fine (which is the first thing I thought of). I've attached a screenshot of the Oncommand graph for one of the disks in this aggr-- not sure if that will come through.
The filer is a 3220 with 8.1.2 7-mode. Fibre channel attach, and there are about 20 luns under two volumes.
TIA,
Fred
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