WD20EARX. openSUSE 11.4 reported 4kSector but FreeNAS8.01Beta3 shows 512Sector

[super-hornet]

I have 3 pieces of new Western Digital WD20EARX.
In openSUSE 11.4, when I do a hdparm, it indicated that it is physical of 4096byte sectors size.

When I install FreeNAS 8.01 Beta 2, I choose the "Force to use 4k sector" option during creating a RAIDZ using the above 3HDD.

I just upgraded to FreeNAS 8.01 Beta 3 but when I view the "/var/run/dmesg.boot ", I notice it reported:
ada0: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada1 at ahcich13 bus 0 scbus15 target 0 lun 0
ada1: <WDC WD20EARX-00PASB0 51.0AB51> ATA-8 SATA 3.x device
ada1: 300.000MB/s transfersda0 at umass-sim0 bus 0 scbus21 target 0 lun 0

Does that mean, it still registered as 512Byte sector?

 

[audix]

Just checked, my Samsung F4s are also reported as 512 byte sectors in the log... hmm...

 

[Bohs Hansen]

same for my Seagate SV35.5 2GB drives

Code:

ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: <ST2000VX002-1AH166 CV01> ATA-8 SATA 3.x device
ada1: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)

 

[jgreco]

I haven't looked through all the code in ata_da.c, but dp->secsize is set to 512 in adasetgeom, and I didn't see any other immediately apparent places it would be set.

For the sake of reporting, listing the drive as N * 512 is probably correct as long as the drive supports N * 512; it may be misleading to expect that it will report it as M * 4096 even though the drive may support that sector size.

Check out

http://ivoras.sharanet.org/blog/tree/2011-01-01.freebsd-on-4k-sector-drives.html

for some additional 4K hints.

 

[jenksdrummer]

FWIW, I'm using jumpers on 7/8 for all my EARS drives.

Seems to work perfectly.