DragonFly BSD
DragonFly users List (threaded) for 2012-09
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Duplicate serial numbers with USB harddisks? (dfly 3.0.3)


From: "Thomas K." <fwd@xxxxxxxxxxxxxxxxx>
Date: Wed, 19 Sep 2012 14:57:13 +0200

Dear list,

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
(probe8:umass-sim1:1:0:0): Uninitialized Transport 5:c018b688?
disk scheduler: set policy of da9 to noop
da9 at umass-sim1 bus 1 target 0 lun 0
da9: <Hitachi HDS721010CLA332 > Fixed Direct Access SCSI-2 device 
da9: Serial Number 801130168383
da9: 40.000MB/s transfers
da9: 953869MB (1953525168 512 byte sectors: 255H 63S/T 121601C)

umass2: <HitachiGST SimpleDrive III by Hitachi, class 0/0, rev 2.00/0.00, addr 3> on uhub6
(probe8:umass-sim2:2:0:0): Uninitialized Transport 5:c018b688?
disk scheduler: set policy of da10 to noop
can't re-use a leaf (801130168383)!
da10 at umass-sim2 bus 2 target 0 lun 0
da10: <Hitachi HDS721010CLA332 > Fixed Direct Access SCSI-2 device 
da10: Serial Number 801130168383
da10: 40.000MB/s transfers
da10: 953869MB (1953525168 512 byte sectors: 255H 63S/T 121601C)

# dmesg|grep 801130168383
da9: Serial Number 801130168383
can't re-use a leaf (801130168383)!
da10: Serial Number 801130168383


Might this be a bug?

Is there any chance this will impact me in operation of the system, dealing with
disk devices, filesystems etc?

Best regards
Thomas



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