On Aug 20, 2009, at 3:26 AM, Gregg Ferguson <[email protected]>
wrote:
First, I personally wouldn't bother mirroring my log devices.
Solaris keeps one copy in main memory and the logged data is the 2nd
copy. If the log fails, no worries, it still has the copy in main
memory.
Partition your SSD just like a regular disk (w/ fdisk) into 3
separate partitions (NOT slices!) Then reboot/reconfigure ( #
touch /.reconfigure; reboot ). Now your SSD devices named cNdNp0
through p2 can be separately added as LOG to ZFS pools. I had one
SLC SSD and I broke it into a small and large partition and added
them separately as LOG and CACHE devices to ZFS. It's just my home
X64 machine so I didn't benchmark to see what improvement I got...
Careful 'p0' is actually not a partition, but the whole disk, actual
partitions start at 'p1'.
-Ross
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