Re: Request for testing: ata(4) MFC

[Ruben van Staveren]

Hi,

On 17 Oct 2008, at 1:15, Steven Hartland wrote:

You must be very careful with using less than 48bit addressing when both the drive and the controller supports it as some disks report errors at

none standard crossover points.


the RAID volumes. The solution was to "always" use 48bit addressing if
the drive supports / requires it.

I saw this first hand with the highpoint driver where it totally trashed

Could this be the thing that is at stake ?



here is a atacontrol cap ad4

(0|chassis|ttyp0[-]) ~ > atacontrol cap ad4

Protocol              Serial ATA II
device model          SEAGATE ST32500NSSUN250G 0825B824R1
serial number         9QE824R1
firmware revision     3AZQ
cylinders             16383
heads                 16
sectors/track         63
lba supported         268435455 sectors
lba48 supported       488390625 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      no       no      65278/0xFEFE
automatic acoustic management  no       no      0/0x00  254/0xFE

The mirror, consisting out of ad4/ad6 got its ad4 trashed with the patch enabled. luckily it could be rebuild from the intact ad6.

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