RFC: ATA to CAM integration patch (and
gjournaled previuos nodes)
Harald Schmalzbauer
h.schmalzbauer at omnilan.de
Tue Jul 7 19:10:53 UTC 2009
Alexander Motin schrieb am 07.07.2009 21:06 (localtime):
...
Thanks for your aeplanations!
>> Feature Support Enable Value Vendor
>> write cache yes no
>> read ahead yes no
>
> It is probably the truth. Existing ATA driver enables this features
> during drive reset sequence. New one doesn't do it yet.
Ic, but my "real" HD ast it enabled:
camcontrol iden ada1
pass2: <SAMSUNG HD322HJ 1AG01113> ATA/ATAPI-7 SATA 2.x device
Protocol SATA revision 2.x
device model SAMSUNG HD322HJ
serial number S17AJ9AS305229
firmware revision 1AG01113
cylinders 16383
heads 16
sectors/track 63
lba supported 268435455 sectors
lba48 supported 625142448 sectors
dma supported
overlap not supported
Feature Support Enable Value Vendor
write cache yes yes
read ahead yes yes
Native Command Queuing (NCQ) yes - 31/0x1F
Tagged Command Queuing (TCQ) no no 31/0x1F
SMART yes yes
microcode download yes yes
security yes no
power management yes yes
advanced power management yes no 0/0x00
automatic acoustic management yes no 0/0x00 254/0xFE
Does the old school HD enable caches itself?
Thanks,
-Harry
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