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?
??
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