Re: Seagate disk freeze for 30 seconds then comes back (RecovComm10B8B)

[Bill Davidsen]

Lennart Sorensen wrote:
> On Wed, Jan 28, 2009 at 11:30:42AM +0200, Catalin(ux) M. BOIE wrote:
> > I have a ST9160821AS drive, firmware 3.BHE, and I experience some seldom 
> > problems with it. It is in a HP 6715s HP laptop, kernel 2.6.27.5.
> >
> > The error message is:
> > ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x80002 action 0x6 frozen
> > ata1: SError: { RecovComm 10B8B }
> > ata1.00: cmd ca/00:f8:11:b8:38/00:00:00:00:00/ec tag 0 dma 126976 out
> > res 40/00:00:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
> > ata1.00: status: { DRDY }
> > ata1: hard resetting link
> > ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
> > ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
> > ata1.00: SB600 AHCI: limiting to 255 sectors per cmd
> > ata1.00: configured for UDMA/100
> > ata1: EH complete
> > sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
> > sd 0:0:0:0: [sda] Write Protect is off
> > sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
> > sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't 
> > support DPO or FUA
> >
> > When it happens, the system freezes for around 30 seconds.
> >
> > Seagate told me that there is no firmware update for this drive.
> >
> > Please, let me know if it is a software issue.
>
> This sounds like a very widely known and discussed firmware problem.  It
> happens with Linux, Windows, and Mac OS X, as well as various NAS boxes.
> It is seagate's fault.  Of course I had only seen it mentioned for the
> 500GB, 750GB, 1TB and 1.5TB drives.  Somehow yours seems like it should
> be a different series, but then again why should a firmware bug not be
> duplicated on all their drives.
Would you expect that firmware would be shared between old tech laptop drives 
and desktop/server drives? Particularly since the laptop drive was built before 
any of the 7200.11 drives?

I think this is a very unlikely part of the problem. Certainly the drive might 
be dying or other hardware issue.

> One discussion is here: http://techreport.com/discussions.x/15863
>
> Seriously annoying for raid users of course when a drive falls out of
> the raid for no good reason.
>
>
> I seem to recall some people had found that if you disabled some part of
> the drive caching the problem seemed to go away (as did a lot of the
> drive's performance of course).


--
Bill Davidsen <davidsen@xxxxxxx>
  "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot

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