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SubjectRe: [PATCH] 64 bit scsi read/write
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> I only have SCSI disks to test with, but they are hot-plug, so I guess
> I can write a whole bunch of blocks with different numbers on them,
> all over the disk, if I can figure out how to place SCSI barriers and
> then pull the drive and see what gives?

Another way is to time

write block
write barrier
write same block
write barrier
repeat

If the write barrier is working you should be able to measure the drive rpm 8)

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