getting to 4K disk blocks in ZFS

[Steven Hartland]

----- Original Message ----- 
> From: "Justin T. Gibbs" <gibbs at scsiguy.com>
> >> Where is Smartctl getting it from?
> >> smartctl -i /dev/da2
> >> smartctl 6.3 2014-07-26 r3976 [FreeBSD 10.1-BETA1 amd64] (local build)
> >> Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org
> >> === START OF INFORMATION SECTION ===
> >> Device Model:     HGST HDN724040ALE640
> >> Serial Number:    PK2334PCG6NA0B
> >> LU WWN Device Id: 5 000cca 24cc30684
> >> Firmware Version: MJAOA5E0
> >> User Capacity:    4,000,787,030,016 bytes [4.00 TB]
> >> Sector Sizes:     512 bytes logical, 4096 bytes physical
> >> Rotation Rate:    7200 rpm
> >> Form Factor:      3.5 inches
> >> Device is:        Not in smartctl database [for details use: -P showall]
> >> ATA Version is:   ATA8-ACS T13/1699-D revision 4
> >> SATA Version is:  SATA 3.0, 6.0 Gb/s (current: 6.0 Gb/s)
> >> Local Time is:    Fri Sep 19 18:33:16 2014 CDT
> >> SMART support is: Available - device has SMART capability.
> >> SMART support is: Enabled
> >> It's not coming from a database, as Smartctl doesn't know about these
> >> (yet); they're too new.
> >
> > Exception to prove the rule?
> >
> > What to "camcontrol identify da2" report?
>
> Was there some recent change made to have that command report sector size
> information?  Last I checked, it didn’t.

camcontrol identify has always done that, but added support for Pass-Through
ATA commands so you can use identify on SATA disks attached to SAS controllers
a while back now.

    Regards
    Steve