60-persistent-storage.rules

在Linux2.6内核下的udev文件系统的源码

# do not edit this file, it will be overwritten on update

# persistent storage links: /dev/{disk,tape}/{by-id,by-uuid,by-label,by-path,by-name}
# scheme based on "Linux persistent device names", 2004, Hannes Reinecke <[e-mail]>

ACTION!="add", GOTO="persistent_storage_end"

KERNEL=="nst[0-9]", SUBSYSTEMS=="scsi", IMPORT{program}="scsi_id --export --whitelisted --fallback-to-sysfs -s %p -d $tempnode", SYMLINK+="tape/by-id/$env{ID_BUS}-$env{ID_SERIAL}-nst"

# type 8 devices are "Medium Changers"
KERNEL=="sg*", SUBSYSTEMS=="scsi", ATTRS{type}=="8", IMPORT{program}="scsi_id --export --whitelisted --fallback-to-sysfs -s %p -d $tempnode", SYMLINK+="tape/by-id/$env{ID_BUS}-$env{ID_SERIAL}"

SUBSYSTEM!="block", GOTO="persistent_storage_end"

# skip rules for inappropriate block devices
KERNEL=="ram*|loop*|fd*|nbd*|gnbd*|dm-*|md*", GOTO="persistent_storage_end"

# never access non-cdrom removable ide devices, the drivers are causing event loops on open()
KERNEL=="hd*[!0-9]", ATTR{removable}=="1", DRIVERS=="ide-cs|ide-floppy", GOTO="persistent_storage_end"
KERNEL=="hd*[0-9]", ATTRS{removable}=="1", GOTO="persistent_storage_end"

# ignore partitions that span the entire disk
ATTR{whole_disk}=="*", GOTO="persistent_storage_end"

# /sys/class/block will export this
ENV{DEVTYPE}!="?*", ATTR{range}=="?*", ENV{DEVTYPE}="disk"
ENV{DEVTYPE}!="?*", ATTR{start}=="?*", ENV{DEVTYPE}="partition"

# for partitions import parent information
ENV{DEVTYPE}=="partition", IMPORT{parent}="ID_*"

# by-id (hardware serial number)
KERNEL=="hd*[!0-9]", IMPORT{program}="ata_id --export $tempnode"
KERNEL=="hd*[!0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/ata-$env{ID_MODEL}_$env{ID_SERIAL}"
KERNEL=="hd*[0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/ata-$env{ID_MODEL}_$env{ID_SERIAL}-part%n"

KERNEL=="sd*[!0-9]|sr*|st*", ATTRS{ieee1394_id}=="?*", ENV{ID_SERIAL}="$attr{ieee1394_id}", ENV{ID_BUS}="ieee1394"
KERNEL=="sd*[!0-9]|sr*|st*", ENV{ID_SERIAL}!="?*", IMPORT{program}="usb_id --export %p"
KERNEL=="sd*[!0-9]|sr*|st*", ENV{ID_SERIAL}!="?*", IMPORT{program}="scsi_id --export --whitelisted --fallback-to-sysfs -s %p -d $tempnode"
KERNEL=="cciss?c[0-9]d[0-9]", ENV{ID_SERIAL}!="?*", IMPORT{program}="scsi_id --export --whitelisted --ignore-sysfs -s %p -d $tempnode", ENV{ID_BUS}="cciss"
KERNEL=="sd*[!0-9]|sr*|cciss?c[0-9]d[0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_BUS}-$env{ID_SERIAL}"
KERNEL=="sd*[0-9]|cciss*p[0-9]", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_BUS}-$env{ID_SERIAL}-part%n"
KERNEL=="st*", ENV{ID_SERIAL}=="?*", SYMLINK+="tape/by-id/$env{ID_BUS}-$env{ID_SERIAL}"

# libata compat (links like hd*)
KERNEL=="sd*[!0-9]|sr*", ENV{ID_VENDOR}=="ATA", PROGRAM="ata_id $tempnode", RESULT=="?*", ENV{ID_ATA_COMPAT}="$result", SYMLINK+="disk/by-id/ata-$env{ID_ATA_COMPAT}"
KERNEL=="sd*[0-9]", ENV{ID_ATA_COMPAT}=="?*", SYMLINK+="disk/by-id/ata-$env{ID_ATA_COMPAT}-part%n"

KERNEL=="mmcblk[0-9]", SUBSYSTEMS=="mmc", ATTRS{name}=="?*", ATTRS{serial}=="?*", ENV{ID_NAME}="$attr{name}", ENV{ID_SERIAL}="$attr{serial}", SYMLINK+="disk/by-id/mmc-$env{ID_NAME}_$env{ID_SERIAL}"
KERNEL=="mmcblk[0-9]p[0-9]", ENV{ID_NAME}=="?*", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/mmc-$env{ID_NAME}_$env{ID_SERIAL}-part%n"

# by-path (shortest physical path)
ENV{DEVTYPE}=="disk", IMPORT{program}="path_id %p"
ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}"
ENV{DEVTYPE}=="partition", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-part%n"
KERNEL=="st*", ENV{ID_PATH}=="?*", SYMLINK+="tape/by-path/$env{ID_PATH}"

KERNEL=="sr*|st*", GOTO="persistent_storage_end"
KERNEL=="hd*[!0-9]", ATTR{removable}=="1", GOTO="persistent_storage_end"

# by-label/by-uuid (filesystem properties)
IMPORT{program}="vol_id --export $tempnode"
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
ENV{ID_FS_USAGE}=="filesystem|other", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"

# BIOS Enhanced Disk Device
ENV{DEVTYPE}=="disk", IMPORT{program}="edd_id --export $tempnode"
ENV{DEVTYPE}=="disk", ENV{ID_EDD}=="?*", SYMLINK+="disk/by-id/edd-$env{ID_EDD}"
ENV{DEVTYPE}=="partition", ENV{ID_EDD}=="?*", SYMLINK+="disk/by-id/edd-$env{ID_EDD}-part%n"

LABEL="persistent_storage_end"