Can anyone give me some guidance on where in the IO stack I might be running
into a 512KB limit on IO transfer sizes to an external FC device? I've
checked IO scheduler parameter
(/sys/block/<dev>/queue/{max_sectors_kb,max_hw_sectors_kb}. Both are set to
32767. I'm using Qlogic HBAs (qla2312), but I don't see any relevent
parameters. I'm running RHEL 4.0 with a 2.6.9-34 kernel. Any pointers would
be greatly appreciated.
cheers - jc
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