udevadm不显示docker容器中的所有属性

时间：2017-01-19 22:55:12

标签： docker udev

当我在容器内运行docker container并列出某个设备的udevadm属性时，只有该设备的基本信息。当我在主机上做同样的事情时，我可以看到更多。如何获取容器内的所有信息？

host$ udevadm info --query=property /dev/bus/usb/004/008
BUSNUM=004
DEVNAME=/dev/bus/usb/004/008
DEVNUM=008
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1
DEVTYPE=usb_device
DRIVER=usb
ID_BUS=usb
ID_MODEL=MCP2210_USB-to-SPI_Master
ID_MODEL_ENC=MCP2210 USB-to-SPI Master
ID_MODEL_ID=00de
ID_REVISION=0002
ID_SERIAL=Microchip_Technology_Inc._MCP2210_USB-to-SPI_Master_0000267472
ID_SERIAL_SHORT=0000267472
ID_USB_INTERFACES=:030000:
ID_VENDOR=Microchip_Technology_Inc.
ID_VENDOR_ENC=Microchip Technology Inc.
ID_VENDOR_FROM_DATABASE=Microchip Technology, Inc.
ID_VENDOR_ID=04d8
MAJOR=189
MINOR=391
PRODUCT=4d8/de/2
SUBSYSTEM=usb
TYPE=0/0/0
USEC_INITIALIZED=176769529274

host$ docker run -ti -v /dev/bus/usb/:/dev/bus/usb alpine sh
container# apk update
container# apk add eudev
container# udevadm info --query=property /dev/bus/usb/004/008
BUSNUM=004
DEVNAME=/dev/bus/usb/004/008
DEVNUM=008
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1
DEVTYPE=usb_device
DRIVER=usb
MAJOR=189
MINOR=391
PRODUCT=4d8/de/2
SUBSYSTEM=usb
TYPE=0/0/0

我还尝试从host：/ sys，/ dev挂载其他卷。没有帮助。

编辑根据Alex P.的回答：

我对udev不是很有经验。我复制了这个

SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", IMPORT{builtin}="usb_id", IMPORT{builtin}="hwdb --subsystem=usb"

到/dev/udev/rules.d/10-local.rules，我已将udev日志记录设置为debug，使用udevadm control --reload重新加载配置。现在我明白了：

calling: info
P: /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.2
N: bus/usb/004/016
no db file to read /run/udev/data/c189:399: No such file or directory
E: BUSNUM=004
E: DEVNAME=/dev/bus/usb/004/016
E: DEVNUM=016
E: DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.2
E: DEVTYPE=usb_device
E: DRIVER=usb
E: MAJOR=189
E: MINOR=399
E: PRODUCT=4d8/de/2
E: SUBSYSTEM=usb
E: TYPE=0/0/0

现在仍然没有运气。 我试图用--privileged标志运行容器，没有帮助。我在/etc/udev/rules.d中没有其他规则。我试图从我的主人那里复制所有规则，没有运气。

host$ udevadm monitor --environment
    monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[183757.837879] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1 (usb)
ACTION=add
BUSNUM=004
DEVNAME=/dev/bus/usb/004/034
DEVNUM=034
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1
DEVTYPE=usb_device
MAJOR=189
MINOR=417
PRODUCT=4d8/de/2
SEQNUM=5985
SUBSYSTEM=usb
TYPE=0/0/0

KERNEL[183757.838467] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0
DEVTYPE=usb_interface
INTERFACE=3/0/0
MODALIAS=usb:v04D8p00DEd0002dc00dsc00dp00ic03isc00ip00in00
PRODUCT=4d8/de/2
SEQNUM=5986
SUBSYSTEM=usb
TYPE=0/0/0

KERNEL[183757.840044] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F (hid)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F
HID_ID=0003:000004D8:000000DE
HID_NAME=Microchip Technology Inc. MCP2210 USB-to-SPI Master
HID_PHYS=usb-0000:00:1d.0-1.1/input0
HID_UNIQ=0000267472
MODALIAS=hid:b0003g0001v000004D8p000000DE
SEQNUM=5987
SUBSYSTEM=hid

KERNEL[183757.840586] add      /class/usbmisc (class)
ACTION=add
DEVPATH=/class/usbmisc
SEQNUM=5988
SUBSYSTEM=class

KERNEL[183757.840891] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0 (usbmisc)
ACTION=add
DEVNAME=/dev/usb/hiddev0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0
MAJOR=180
MINOR=0
SEQNUM=5989
SUBSYSTEM=usbmisc

KERNEL[183757.841219] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F/hidraw/hidraw0 (hidraw)
ACTION=add
DEVNAME=/dev/hidraw0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F/hidraw/hidraw0
MAJOR=244
MINOR=0
SEQNUM=5990
SUBSYSTEM=hidraw

UDEV  [183757.842324] add      /class/usbmisc (class)
ACTION=add
DEVPATH=/class/usbmisc
SEQNUM=5988
SUBSYSTEM=class
USEC_INITIALIZED=183757842069

UDEV  [183758.395467] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1 (usb)
ACTION=add
BUSNUM=004
DEVNAME=/dev/bus/usb/004/034
DEVNUM=034
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1
DEVTYPE=usb_device
DRIVER=usb
ID_BUS=usb
ID_MODEL=MCP2210_USB-to-SPI_Master
ID_MODEL_ENC=MCP2210\x20USB-to-SPI\x20Master
ID_MODEL_ID=00de
ID_REVISION=0002
ID_SERIAL=Microchip_Technology_Inc._MCP2210_USB-to-SPI_Master_0000267472
ID_SERIAL_SHORT=0000267472
ID_USB_INTERFACES=:030000:
ID_VENDOR=Microchip_Technology_Inc.
ID_VENDOR_ENC=Microchip\x20Technology\x20Inc.
ID_VENDOR_FROM_DATABASE=Microchip Technology, Inc.
ID_VENDOR_ID=04d8
MAJOR=189
MINOR=417
PRODUCT=4d8/de/2
SEQNUM=5985
SUBSYSTEM=usb
TYPE=0/0/0
USEC_INITIALIZED=183757852027

UDEV  [183758.396989] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0
DEVTYPE=usb_interface
DRIVER=usbhid
ID_VENDOR_FROM_DATABASE=Microchip Technology, Inc.
INTERFACE=3/0/0
MODALIAS=usb:v04D8p00DEd0002dc00dsc00dp00ic03isc00ip00in00
PRODUCT=4d8/de/2
SEQNUM=5986
SUBSYSTEM=usb
TYPE=0/0/0
USEC_INITIALIZED=183758396448

UDEV  [183758.398096] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0 (usbmisc)
ACTION=add
DEVNAME=/dev/usb/hiddev0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0
MAJOR=180
MINOR=0
SEQNUM=5989
SUBSYSTEM=usbmisc
USEC_INITIALIZED=183758397905

UDEV  [183758.398728] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F (hid)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F
HID_ID=0003:000004D8:000000DE
HID_NAME=Microchip Technology Inc. MCP2210 USB-to-SPI Master
HID_PHYS=usb-0000:00:1d.0-1.1/input0
HID_UNIQ=0000267472
MODALIAS=hid:b0003g0001v000004D8p000000DE
SEQNUM=5987
SUBSYSTEM=hid
USEC_INITIALIZED=183758398168

UDEV  [183758.399920] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F/hidraw/hidraw0 (hidraw)
ACTION=add
DEVNAME=/dev/hidraw0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F/hidraw/hidraw0
MAJOR=244
MINOR=0
SEQNUM=5990
SUBSYSTEM=hidraw
USEC_INITIALIZED=183758399726

KERNEL[183758.400685] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0 (usbmisc)
ACTION=remove
DEVNAME=/dev/usb/hiddev0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0
MAJOR=180
MINOR=0
SEQNUM=5991
SUBSYSTEM=usbmisc

KERNEL[183758.400766] remove   /usbmisc (class)
ACTION=remove
DEVPATH=/usbmisc
SEQNUM=5992
SUBSYSTEM=class

KERNEL[183758.400956] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F/hidraw/hidraw0 (hidraw)
ACTION=remove
DEVNAME=/dev/hidraw0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F/hidraw/hidraw0
MAJOR=244
MINOR=0
SEQNUM=5993
SUBSYSTEM=hidraw

KERNEL[183758.401068] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F (hid)
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F
HID_ID=0003:000004D8:000000DE
HID_NAME=Microchip Technology Inc. MCP2210 USB-to-SPI Master
HID_PHYS=usb-0000:00:1d.0-1.1/input0
HID_UNIQ=0000267472
MODALIAS=hid:b0003g0001v000004D8p000000DE
SEQNUM=5994
SUBSYSTEM=hid

UDEV  [183758.403532] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0 (usbmisc)
ACTION=remove
DEVNAME=/dev/usb/hiddev0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0
MAJOR=180
MINOR=0
SEQNUM=5991
SUBSYSTEM=usbmisc
USEC_INITIALIZED=183758400806

UDEV  [183758.404020] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F/hidraw/hidraw0 (hidraw)
ACTION=remove
DEVNAME=/dev/hidraw0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F/hidraw/hidraw0
MAJOR=244
MINOR=0
SEQNUM=5993
SUBSYSTEM=hidraw
USEC_INITIALIZED=183758402106

UDEV  [183758.404380] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F (hid)
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.001F
HID_ID=0003:000004D8:000000DE
HID_NAME=Microchip Technology Inc. MCP2210 USB-to-SPI Master
HID_PHYS=usb-0000:00:1d.0-1.1/input0
HID_UNIQ=0000267472
MODALIAS=hid:b0003g0001v000004D8p000000DE
SEQNUM=5994
SUBSYSTEM=hid
USEC_INITIALIZED=183758402790

UDEV  [183758.405108] remove   /usbmisc (class)
ACTION=remove
DEVPATH=/usbmisc
SEQNUM=5992
SUBSYSTEM=class
USEC_INITIALIZED=183758401553

在容器中，缺少ID字段：

    monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[183877.777776] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1 (usb)
ACTION=add
BUSNUM=004
DEVNAME=/dev/bus/usb/004/035
DEVNUM=035
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1
DEVTYPE=usb_device
MAJOR=189
MINOR=418
PRODUCT=4d8/de/2
SEQNUM=5999
SUBSYSTEM=usb
TYPE=0/0/0

KERNEL[183877.778115] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0
DEVTYPE=usb_interface
INTERFACE=3/0/0
MODALIAS=usb:v04D8p00DEd0002dc00dsc00dp00ic03isc00ip00in00
PRODUCT=4d8/de/2
SEQNUM=6000
SUBSYSTEM=usb
TYPE=0/0/0

KERNEL[183877.779627] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.0020 (hid)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.0020
HID_ID=0003:000004D8:000000DE
HID_NAME=Microchip Technology Inc. MCP2210 USB-to-SPI Master
HID_PHYS=usb-0000:00:1d.0-1.1/input0
HID_UNIQ=0000267472
MODALIAS=hid:b0003g0001v000004D8p000000DE
SEQNUM=6001
SUBSYSTEM=hid

KERNEL[183877.780178] add      /class/usbmisc (class)
ACTION=add
DEVPATH=/class/usbmisc
SEQNUM=6002
SUBSYSTEM=class

KERNEL[183877.780314] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0 (usbmisc)
ACTION=add
DEVNAME=/dev/usb/hiddev0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0
MAJOR=180
MINOR=0
SEQNUM=6003
SUBSYSTEM=usbmisc

KERNEL[183877.780413] add      /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.0020/hidraw/hidraw0 (hidraw)
ACTION=add
DEVNAME=/dev/hidraw0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.0020/hidraw/hidraw0
MAJOR=244
MINOR=0
SEQNUM=6004
SUBSYSTEM=hidraw

KERNEL[183878.337362] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0 (usbmisc)
ACTION=remove
DEVNAME=/dev/usb/hiddev0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/usbmisc/hiddev0
MAJOR=180
MINOR=0
SEQNUM=6005
SUBSYSTEM=usbmisc

KERNEL[183878.337467] remove   /usbmisc (class)
ACTION=remove
DEVPATH=/usbmisc
SEQNUM=6006
SUBSYSTEM=class

KERNEL[183878.337521] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.0020/hidraw/hidraw0 (hidraw)
ACTION=remove
DEVNAME=/dev/hidraw0
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.0020/hidraw/hidraw0
MAJOR=244
MINOR=0
SEQNUM=6007
SUBSYSTEM=hidraw

KERNEL[183878.337584] remove   /devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.0020 (hid)
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb4/4-1/4-1.1/4-1.1:1.0/0003:04D8:00DE.0020
HID_ID=0003:000004D8:000000DE
HID_NAME=Microchip Technology Inc. MCP2210 USB-to-SPI Master
HID_PHYS=usb-0000:00:1d.0-1.1/input0
HID_UNIQ=0000267472
MODALIAS=hid:b0003g0001v000004D8p000000DE
SEQNUM=6008
SUBSYSTEM=hid

3 个答案:

答案 0 :(得分：7)

如果您只关心从udev数据库获取信息，那么您可以将主机的udev数据库安装到docker容器中，例如，

-v /run/udev:/run/udev:ro

通过这样做，您不需要在docker容器中运行udev守护程序，但在执行ID_时仍然会获得所有udevadm info属性。这对我来说是在Debian主机上运行的Debian docker容器。

我还建议安装/dev，这样您的docker容器就会知道设备文件的任何更改。

答案 1 :(得分：1)

根据这个this博客，在容器中运行时，udev在docker中效果不佳。因此我决定这个问题需要解决方法。使用udev我只能在/ sys中获取设备的路径，并直接从该路径获取所需信息，例如： G：

container# cat "/sys$(udevadm info -q path /dev/bus/usb/002/009)/idVendor"

我打算将此标记为已解决，但这只是一种解决方法，而不是问题的真正答案。

修改

根据this post，需要这些标志才能让udevadm显示udev事件（以及属性）： - net = host -v / dev：/ dev

这仅适用于udevadm monitor，不适用于udevadm info。

答案 2 :(得分：0)

添加以下udev规则以填充ID_属性：

SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", IMPORT{builtin}="usb_id", IMPORT{builtin}="hwdb --subsystem=usb"
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