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ブロックデバイス名からUSBPortを探る

Last updated at 2021-06-01Posted at 2021-06-01

概要

ブロックデバイス名からUSBデバイスの特定が面倒だったので手順を記す。

方法

まずはlsblkでブロックデバイス名を探します。
デフォルトではSERIALが表示されないので指定します。

$ lsblk -o NAME,TYPE,MOUNTPOINT,SERIAL
NAME                      TYPE MOUNTPOINT          SERIAL

略

sdh                       disk /mnt/hdd16          Z0I1S2NPABCD
sdi                       disk /mnt/hdd4           1910E1EF0000
sdj                       disk                     5643484854000000
sdk                       disk /mnt/hdd7           JMicron_Generic_0123456789ABCDEF
sdl                       disk /mnt/hdd10          56474A4745000000

/dev/sdjがマウントされていないので探します。

lsusbでツリー表示してみましょう。

$ lsusb -t
/:  Bus 12.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
    |__ Port 2: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/:  Bus 11.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/:  Bus 10.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
/:  Bus 09.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/:  Bus 08.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
        |__ Port 3: Dev 7, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
        |__ Port 1: Dev 4, If 0, Class=Mass Storage, Driver=uas, 5000M
        |__ Port 4: Dev 9, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
        |__ Port 2: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
    |__ Port 2: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
    |__ Port 3: Dev 6, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
    |__ Port 4: Dev 8, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/:  Bus 07.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
/:  Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
        |__ Port 2: Dev 4, If 0, Class=Mass Storage, Driver=uas, 5000M
        |__ Port 3: Dev 5, If 0, Class=Mass Storage, Driver=uas, 5000M
        |__ Port 4: Dev 7, If 0, Class=Mass Storage, Driver=uas, 5000M
    |__ Port 2: Dev 3, If 0, Class=Mass Storage, Driver=uas, 5000M
    |__ Port 3: Dev 6, If 0, Class=Mass Storage, Driver=uas, 5000M
/:  Bus 05.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
    |__ Port 2: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
    |__ Port 3: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
    |__ Port 4: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M

多すぎてさっぱりわかりません。

usb-devicesにはSerialNumberがあるので、

$ sudo usb-devices | grep -B 5 5643484854000000
T:  Bus=04 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#=  3 Spd=5000 MxCh= 0
D:  Ver= 3.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 9 #Cfgs=  1
P:  Vendor=1058 ProdID=25a3 Rev=10.30
S:  Manufacturer=Western Digital
S:  Product=Elements 25A3
S:  SerialNumber=5643484854000000

これでT:の行からBUS 04のPort 1が判明しました。

USBホストの位置はsub-devicesでBusのHOSTを探して、lspciであたりを付ければよいかと思います。

$ usb-devices | grep -A 5 "Bus=04 Lev=00"
T:  Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh= 4
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=1d6b ProdID=0003 Rev=05.04
S:  Manufacturer=Linux 5.4.0-73-generic xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=0000:00:14.0

$ lspci | grep USB
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
01:00.0 USB controller: Renesas Technology Corp. uPD720201 USB 3.0 Host Controller (rev 03)
09:00.0 USB controller: Renesas Technology Corp. uPD720201 USB 3.0 Host Controller (rev 03)
0a:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller
0f:00.0 USB controller: ASMedia Technology Inc. ASM1042 SuperSpeed USB Host Controller

追記

USBホストコントローラーによっては正しくシリアルナンバーを返さない場合があります。
もっと簡単な方法がある気がしますのでコメントにお願いします。

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