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On Wed, 07 Feb 2007 22:56:45 -0600 Robert Hancock <hancockr@shaw.ca> wrote: > Paolo Ornati wrote: > > If mounting XFS with "nobarrier" fixes the problem it seems that more > > than one Seagate disk cannot handle the Cache Flush command while other > > commands are in fly... > > It's not allowed to overlap NCQ (FPDMA read/write) commands with any > other commands such as cache flushes. libata core guarantees that this > doesn't happen by deferring such requests until the FPDMA commands are > complete. (At least, it's supposed to..) I didn't know that. Anyway just mounting XFS with "nobarrier" fixes the ploblem for me... so libata is buggy or I don't know! -- Paolo Ornati Linux 2.6.20 on x86_64 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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