Samsung 830 and ZFS TRIM
dieterich.joh at gmail.com
Mon Nov 26 19:48:06 UTC 2012
(initially posted this to -questions@ a week ago, w/o reply)
I installed CURRENT on a new Thinkpad equipped with a Samsung 830 SSD:
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <SAMSUNG SSD 830 Series CXM03B1Q> ATA-9 SATA 3.x device
ada0: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 122104MB (250069680 512 byte sectors: 1H 63S/T 16383C)
ada0: Previously was known as ad4
as the setup is ZFS+GELI based (on ada0), I enabled ZFS TRIM support in
Interestingly, I encounter an IMHO strange behavior with the stats on that:
It seems unintuitive to me why the unsupported counter first increases
(seems to stay constant after that each boot) and then slowly the
success counter increases as well.
Probably there is a trivial explanation (GELI?) and/or fix for this that
anyone is willing to share?
If you need further information, let me know.
Thanks a lot
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