[lkml]   [2007]   [Sep]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] blacklist NCQ on Seagate Barracuda ST380817AS
Tejun Heo wrote:
> Mark Lord wrote:
>> Jeff Garzik wrote:
>>> Paolo Ornati wrote:
>>>> I have this problem only with XFS, and even with XFS it goes away
>>>> mounting with "nobarrier"...
>>> This last is an interesting datapoint.
>>> I wonder if libata has a generic problem with NCQ + FLUSH CACHE.
>> Yeah, that's pretty suspicious. Prior to issuing a FLUSH_CACHE op,
>> one must first drain all outstanding NCQ commands (and not issue new ones).
>> I'm sure the code must *try* to do that, but perhaps there's a bug in
>> there?
>> Or just another drive bug?
> If there was such a bug, the aborted commands list should contain both
> FPDMA commands and FLUSH commands. I don't think command filtering
> itself is broken. Possibly another quirky firmware but it's strange
> that this is the only Seagate drive showing this problem.

Yeah, that's the strange bit.

Surely someone at SuSE must have a drive like that,
which they could set up with XFS and reproduce the same results?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-09-30 19:47    [W:0.062 / U:31.012 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site