On 08/18/2011 02:17, Jeremy Chadwick wrote:
The below advice still applies. Do not skim the page, read it.
http://ivoras.net/blog/tree/2011-01-01.freebsd-on-4k-sector-drives.html
You will therefore have to go through some manual rigmarole (preferably
with gpart(8)) to ensure performance. If you plan on using the disks in
ZFS, you get to go through some extra rigmarole.
I didn't know about such extra actions that are required and just
created ZFS pool.
zdb -C <mypool> shows ashift as 9. I read it as meaning that sector size
if 512bytes (wrong!).
But I tested the 25GB file writing/reading speed on the middle tracks
and it seems reasonable:
WR 55MB/s
RD 107MB/s
So can I get even better speeds if it was aware of 4k sector?
Yuri
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