Mark J Musante wrote:
On Tue, 30 Jun 2009, John Hoogerdijk wrote:
i've setup a RAIDZ2 pool with 5 SATA drives and added a 32GB SSD log
device. to see how well it works, i ran bonnie++, but never saw any
io's on the log device (using iostat -nxce) . pool status is good -
no issues or errors. any ideas?
Try using direct i/o (the -D flag) in bonnie++. You'll need at least
version 1.03e.
Or you could export the filesystem via NFS and run any file creation/write
workload on an NFS client; that should generate a large amount of log
activity thanks to the synchronous writes that the NFS server must issue
to honour its obligations to the NFS client.
--
jason.ozol...@anu.edu.au ANU Supercomputer Facility
Leonard Huxley Bldg 56, Mills Road
Ph: +61 2 6125 5449 Australian National University
Fax: +61 2 6125 8199 Canberra, ACT, 0200, Australia
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