SCSI disk serial number.
scottl at samsco.org
Thu May 10 15:07:24 UTC 2007
Pawel Jakub Dawidek wrote:
> Can someone confirm this is the right thing to do to get SCSI disk
> serial number?
> Thanks in advance!
> Can someone help me with other drivers?
The serial number that CAM obtains comes from a page 0x80 inquiry. It
is known to be rather unreliable in its uniqueness. The SCSI spec
allows the target to return a non-zero length of all 0x20 characters if
it so desires. Most applications that need a unique drive identifier
try to obtain the WWN from page 0x83 instead, and fall back to
hueristics with page 0x80 if that fails.
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