Re: [PATCH] blk-settings: round down io_opt to at least 4K

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Christoph,

> 0xffff as the max and a weirdly uneven number even for partity RAID
> seems like a good value to ignore by default.

Quite a few SCSI devices report 0xffff to indicate that the optimal
transfer length is the same as the maximum transfer length which for
low-byte commands is capped at 0xffff. That's where the odd value comes
from in some cases.

> But then again just dealing with USB will probably catch the majority
> of cases.

Yep.

-- 
Martin K. Petersen	Oracle Linux Engineering




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