Mikael Pettersson wrote:
Linda Walsh writes:
> Robert Hancock wrote:
> > Linda Walsh wrote:
> >>>> read rate began falling; at 128k block-reads-at-a-time or larger, it
> >>>> drops below 20MB/s (only on buffered SATA).
>
> But more importantly -- I notice a chronic error message associate
> with this drive that may be causing some or all of the problem:
> ---
> ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2
> ata1.00: port_status 0x20080000
> ata1.00: cmd c8/00:10:30:06:03/00:00:00:00:00/e0 tag 0 cdb 0x0 data 8192 in
> res 50/00:00:3f:06:03/00:00:00:00:00/e0 Emask 0x2 (HSM violation)
> ata1: limiting SATA link speed to 1.5 Gbps
Looks like the Promise ASIC SG bug. Apply
<http://user.it.uu.se/~mikpe/linux/patches/sata_promise/patch-sata_promise-1-asic-sg-bug-fix-v3-2.6.23>
and let us know if things improve.
/Mikael
---
Yep! Hope that's making it into a patch soon or, at least 2.6.24.
Kernel buffered
I seem to remember reading about some problems with Promise SATA & ACPI.
Does this address that or is that a separate issue? (Am using no-acpi for
now, but would like to try acpi again if it may be fixed (last time I tried
it with this card, "sdb" went "offline" (once it unmounted itself and
refused to be remounted (no error...just nothing), and another it stayed
mounted, but gave an I/O Error...so have been using no-acpi since).
An ACPI error in bootup said:
ACPI Exception (utmutex-0263): AE_BAD_PARAMETER, Thread EFFC2000 could
not acquire Mutex [3] [20070126]
Is the above bug mentioned/discussed in the linux-ide archives? That
and I'd like to find out why TCQ/NCQ doesn't work with the Seagate drives --
my guess, since they say queuedepth of 0/32, is that they are blacklisted
as being drives that don't follow normal protocol or implement their
own proprietary extensions? Sigh. Really a lame move (if that's the case)
for Seagate, considering they usage they could likely get in server
configs. Maybe they want to push their SCSI/SAS drives?
BTW, can SATA have DPO or FUA or are those limited to SCSI?
Would it be a desirable future addition to remove the
"doesn't support DPO or FUA" error message" on SATA drives if they are
specific to SCSI?
-
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
