Duplicate serial numbers with USB harddisks? (dfly 3.0.3)
thomas.nikolajsen at mail.dk
Thu Sep 20 23:38:42 PDT 2012
>I just put Dragonfly 3.0.3 on a spare box and at first connected a single USB
>HDD to it. After a while I connected two others (of the same type; different
>from the first one) and now I found this in dmesg output:
>umass1: <HitachiGST SimpleDrive III by Hitachi, class 0/0, rev 2.00/0.00, addr 2> on uhub6
>da9: Serial Number 801130168383
>umass2: <HitachiGST SimpleDrive III by Hitachi, class 0/0, rev 2.00/0.00, addr 3> on uhub6
>da10: Serial Number 801130168383
Seems like a known problem, please see:
Where Matt describes problem:
>Most USB hard drives run through
>a USB<->SATA/Firewire bridge chip and most of these bridge chips can't
>handle serial number queries.
>I don't think there's a good solution for the usb serial number issue
>atm, other than to not use USB for any serious hard drive attachments.
>For a laptop which only has USB I guess there's no choice, and in that
>case you just have to hardwire it to /dev/da8 or something like that.
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