udev

udev(Userspace DEVice management)

systemd-udevd.service

udevのデフォルトルール

/usr/lib/udev/rules.d/50-udev-default.rules

code:memo

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATRR{address}=="xx:xx:xx:xx:xx:xx", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

$ udevadm info -q path -n /dev/sda

/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0004:00/VMBUS:00/fd1d2cbd-ce7c-535c-966b-eb5f811c95f0/host0/target0:0:0/0:0:0:0/block/sda

$ udevadm info -q env -n /dev/sda

> udevadm info -q env -n /dev/sda

DEVPATH=/devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0004:00/VMBUS:00/fd1d2cbd-ce7c-535c-966b-eb5f811c95f0/host0/target0:0:0/0:0:0:0/block/sda

DEVNAME=/dev/sda

DEVTYPE=disk

DISKSEQ=25

MAJOR=8

MINOR=0

SUBSYSTEM=block

USEC_INITIALIZED=3645781

ID_SCSI=1

ID_VENDOR=Msft

ID_VENDOR_ENC=Msft\x20\x20\x20\x20

ID_MODEL=Virtual_Disk

ID_MODEL_ENC=Virtual\x20Disk\x20\x20\x20\x20

ID_REVISION=1.0

ID_TYPE=disk

ID_SERIAL=36002248079f9f66f426ea82fb0957801

ID_SERIAL_SHORT=6002248079f9f66f426ea82fb0957801

ID_WWN=0x6002248079f9f66f

ID_WWN_VENDOR_EXTENSION=0x426ea82fb0957801

ID_WWN_WITH_EXTENSION=0x6002248079f9f66f426ea82fb0957801

ID_BUS=scsi

ID_PATH=acpi-VMBUS:00-vmbus-fd1d2cbdce7c535c966beb5f811c95f0-lun-0

ID_PATH_TAG=acpi-VMBUS_00-vmbus-fd1d2cbdce7c535c966beb5f811c95f0-lun-0

ID_FS_VERSION=1.0

ID_FS_TYPE=ext4

ID_FS_USAGE=filesystem

DEVLINKS=/dev/disk/by-id/scsi-36002248079f9f66f426ea82fb0957801 /dev/disk/by-path/acpi-VMBUS:00-vmbus-fd1d2cbdce7c535c966beb5f811c95f0-lun-0 /dev/disk/by-id/wwn-0x6002248079f9f66f426ea82fb0957801

TAGS=:systemd:

CURRENT_TAGS=:systemd:

確認用

Q. udev

参考

関連

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