----- Original Message -----
From: "Matthew Ahrens" <[email protected]>
An example of this could be calculate lower loads for vdevs with a higher
rotational rate.
To clarify as per ATA and SCSI specs:
0 = Rate unknown
1 = Rate non-rotationl
2-INT16_MAX = rotational rate
I don't see the point of having a variable called "rotation_rate" that
doesn't store the rotation rate and is always set to UNKNOWN. Please
update the webrev when you've implemented this (setting this variable based
on the rotation rate and taking it into account in the i/o scheduling
logic), or removed the dead code.
It already does get this in the FreeBSD version, its just waiting on code
to expose this value from the device layer in illumos :)
Ah so you can poke those values directly using /etc/system and you
dont need any special handlers like sysctl in FreeBSD?
Cool good to know, there's nothing that suggests that in the code hence
I thought it was just static declarations being missed by mistake, thanks
for clarifying :)
Regards
Steve
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