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例如用udevinfo -a -p /sys/block/sdb
然后会显示好几段，到底看哪段呢？
[root@www ~]# udevinfo -a -p /sys/block/sdb
Udevinfo starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.
looking at device '/block/sdb':
KERNEL=="sdb"
SUBSYSTEM=="block"
SYSFS{stat}==" 131 5 1088 381 0 0 0 0 0 290 381"
SYSFS{size}=="7895040"
SYSFS{removable}=="1"
SYSFS{range}=="16"
SYSFS{dev}=="8:16"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.0/host1/target1:0:0/1:0:0:0':
ID=="1:0:0:0"
BUS=="scsi"
DRIVER=="sd"
SYSFS{ioerr_cnt}=="0x2"
SYSFS{iodone_cnt}=="0x20b"
SYSFS{iorequest_cnt}=="0x20b"
SYSFS{iocounterbits}=="32"
SYSFS{timeout}=="60"
SYSFS{state}=="running"
SYSFS{rev}=="8.07"
SYSFS{model}=="CM960 "
SYSFS{vendor}=="EAGET "
SYSFS{scsi_level}=="3"
SYSFS{type}=="0"
SYSFS{queue_type}=="none"
SYSFS{queue_depth}=="1"
SYSFS{device_blocked}=="0"
SYSFS{max_sectors}=="240"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.0/host1/target1:0:0':
ID=="target1:0:0"
BUS==""
DRIVER==""
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.0/host1':
ID=="host1"
BUS==""
DRIVER==""
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1/1-1:1.0':
ID=="1-1:1.0"
BUS=="usb"
DRIVER=="usb-storage"
SYSFS{modalias}=="usb:v058Fp6387d0101dc00dsc00dp00ic08isc06ip50"
SYSFS{bInterfaceProtocol}=="50"
SYSFS{bInterfaceSubClass}=="06"
SYSFS{bInterfaceClass}=="08"
SYSFS{bNumEndpoints}=="02"
SYSFS{bAlternateSetting}==" 0"
SYSFS{bInterfaceNumber}=="00"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1/1-1':
ID=="1-1"
BUS=="usb"
DRIVER=="usb"
SYSFS{configuration}==""
SYSFS{serial}=="C2253A6A"
SYSFS{product}=="Mass Storage"
SYSFS{manufacturer}=="Generic"
SYSFS{maxchild}=="0"
SYSFS{version}==" 2.00"
SYSFS{devnum}=="2"
SYSFS{speed}=="480"
SYSFS{bMaxPacketSize0}=="64"
SYSFS{bNumConfigurations}=="1"
SYSFS{bDeviceProtocol}=="00"
SYSFS{bDeviceSubClass}=="00"
SYSFS{bDeviceClass}=="00"
SYSFS{bcdDevice}=="0101"
SYSFS{idProduct}=="6387"
SYSFS{idVendor}=="058f"
SYSFS{bMaxPower}=="100mA"
SYSFS{bmAttributes}=="80"
SYSFS{bConfigurationValue}=="1"
SYSFS{bNumInterfaces}==" 1"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:03.0/usb1':
ID=="usb1"
BUS=="usb"
DRIVER=="usb"
SYSFS{configuration}==""
SYSFS{serial}=="0000:02:03.0"
SYSFS{product}=="EHCI Host Controller"
SYSFS{manufacturer}=="Linux 2.6.18-164.el5 ehci_hcd"
SYSFS{maxchild}=="6"
SYSFS{version}==" 2.00"
SYSFS{devnum}=="1"
SYSFS{speed}=="480"
SYSFS{bMaxPacketSize0}=="64"
SYSFS{bNumConfigurations}=="1"
SYSFS{bDeviceProtocol}=="01"
SYSFS{bDeviceSubClass}=="00"
SYSFS{bDeviceClass}=="09"
SYSFS{bcdDevice}=="0206"
SYSFS{idProduct}=="0000"
SYSFS{idVendor}=="0000"
SYSFS{bMaxPower}==" 0mA"
SYSFS{bmAttributes}=="e0"
SYSFS{bConfigurationValue}=="1"
SYSFS{bNumInterfaces}==" 1"
looking at parent device '/devices/pci0000:00/0000:00:11.0/0000:02:03.0':
ID=="0000:02:03.0"
BUS=="pci"
DRIVER=="ehci_hcd"
SYSFS{broken_parity_status}=="0"
SYSFS{enable}=="0"
SYSFS{modalias}=="pci:v000015ADd00000770sv000015ADsd00000770bc0Csc03i20"
SYSFS{local_cpus}=="ffffffff"
SYSFS{irq}=="51"
SYSFS{class}=="0x0c0320"
SYSFS{subsystem_device}=="0x0770"
SYSFS{subsystem_vendor}=="0x15ad"
SYSFS{device}=="0x0770"
SYSFS{vendor}=="0x15ad"
looking at parent device '/devices/pci0000:00/0000:00:11.0':
ID=="0000:00:11.0"
BUS=="pci"
DRIVER==""
SYSFS{broken_parity_status}=="0"
SYSFS{enable}=="0"
SYSFS{modalias}=="pci:v000015ADd00000790sv00000000sd00000000bc06sc04i01"
SYSFS{local_cpus}=="ffffffff"
SYSFS{irq}=="0"
SYSFS{class}=="0x060401"
SYSFS{subsystem_device}=="0x0000"
SYSFS{subsystem_vendor}=="0x0000"
SYSFS{device}=="0x0790"
SYSFS{vendor}=="0x15ad"
looking at parent device '/devices/pci0000:00':
ID=="pci0000:00"
BUS==""
DRIVER=="" |
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发表于 2010-07-01 21:04