hdparm reporting a different serial number

From	Bhasker C V <bhasker@unixindia.com>
Newsgroups	linux.debian.user
Subject	hdparm reporting a different serial number
Date	2017-09-20 05:10 +0200
Message-ID	<urDyG-5Fl-3@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi all,
 I have a seagate backup plus 5TB.
 When I plug-in the hdd, I see the serial number (as printed in the
back of the HDD) in dmesg.

usb 2-1.1: SerialNumber: XXXXXXXX
[    5.244161] usbcore: registered new interface driver usb-storage
[    5.245790] scsi host6: uas
[    5.246015] usbcore: registered new interface driver uas
[    5.247071] scsi 6:0:0:0: Direct-Access     Seagate  BUP BK
  0108 PQ: 0 ANSI: 6
[    5.285452] sd 6:0:0:0: [sda] 9767541167 512-byte logical blocks:
(5.00 TB/4.55 TiB)
[    5.285458] sd 6:0:0:0: [sda] 4096-byte physical blocks
[    5.285786] sd 6:0:0:0: [sda] Write Protect is off
[    5.285790] sd 6:0:0:0: [sda] Mode Sense: 53 00 00 08
This serial number is correct ! (Actuial serial number is obfuscated)

Whereas, when I do a hdparm or smartctl -i , I get a different serial number.

ATA device, with non-removable media
        Model Number:       ST5000LM000-2AN170
        Serial Number:      YYYYYYY
        Firmware Revision:  0001
        Transport:          Serial, ATA8-AST, SATA 1.0a, SATA II
Extensions, SATA Rev 2.5,
(actual serial number obfuscated)

Can someone explain why please ?

When I use seagate seatools, it reports both the USB-STORAGE and also
the internal HDD with the same XXXXXXXX serial number (on windows).


Regards
Bhasker C V

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hdparm reporting a different serial number Bhasker C V <bhasker@unixindia.com> - 2017-09-20 05:10 +0200
  Re: hdparm reporting a different serial number Ben Caradoc-Davies <ben@transient.nz> - 2017-09-20 07:30 +0200

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