-vol_id - partition, filesystem, disklabel reader
+vol_id - probe filesystem and read label and uuid
This program is normally called from a udev rule, to provide udev with the
-name, uuid or the filesystem type of a partition to name a device node.
-vol_id opens the blockdevice node specified at the commandline.
-The following commandline switches are supported to specify what vol_id
-should print:
+filesystem type of a volume and the label and uuid to name a device node.
+vol_id opens the blockdevice node specified at the commandline. The following
+commandline switches are supported to specify what vol_id should print:
--export prints all values
-h prints help text
- -l prints the label of the partition
- -u prints the uuid of the partition
+ -l prints the label of the volume
+ -u prints the uuid of the volume
vol_id will only return successful if the string asked for, is not
empty. All trailing whitespace will be removed, spaces replaced by underscore
fstype probe label uuid fsversion
----------------------------------------------------
+linux swap * * * *
ext * * * *
reiserfs jr/3.5/3.6/4 * * * *
fat (12, 16, 32) * * * *
xfs * * * -
hfs (plus, wrapped) * * * -
udf * * - -
-iso9660 * * n/a -
+iso9660 * * - -
ufs * - - -
-linux swap * * * *
-LVM 1 * - - -
-LVM 2 * - - *
-linux raid * - * *
cramfs * * - -
sysv * * - *
luks * - * -
hpfs * - - -
-romfs *
-minix *
-highpoint *
-isw_raid *
-lsi_raid *
-nvidia_raid *
-promise_raid *
-silicon_raid *
-via_raid *
-mac partitons *
-msdos partitions *
+romfs * * - -
+squashfs * - - -
+minix * - - *
+ocfs (1, 2) * * * *
+vxfs * - - *
+nss (netware) * * *
+gfs, gfs2 * - - -
-
-The following rule will create a symlink named with the label string:
- KERNEL=="[hs]d*", PROGRAM=="/sbin/vol_id -l %N", SYMLINK+="%c"
+Raid members are detected to prevent the probing for a filesystem
+-----------------------------------------------------------------
+linux raid * - * *
+LVM 1 * - - -
+LVM 2 * - - *
+highpoint * - - -
+isw_raid * - - -
+lsi_raid * - - -
+nvidia_raid * - - -
+promise_raid * - - -
+silicon_raid * - - -
+via_raid * - - -
+jmicron * - - -
+adaptec * - - -
If no label is found vol_id exits with nonzero and the rule will be
ignored.
To give it a try, you may call it on the commandline:
- [root@pim udev.kay]# extras/volume_id/vol_id /dev/hda3
- T:ext3
- L:Music Store
- N:Music_Store
- U:d2da42b5-bbd9-44eb-a72c-cc4542fcb71e
+ $ extras/volume_id/vol_id --export /dev/sda6
+ ID_FS_USAGE=filesystem
+ ID_FS_TYPE=ext3
+ ID_FS_VERSION=1.0
+ ID_FS_UUID=3e999973-00c9-4917-9442-b7633bd95b9e
+ ID_FS_LABEL=devel
+ ID_FS_LABEL_SAFE=devel
- [root@pim udev.kay]# extras/volume_id/vol_id -l /dev/hda3
- Music_Store
+ $ extras/volume_id/vol_id -l /dev/sda6
+ devel
- [root@pim udev.kay]# extras/volume_id/vol_id -t /dev/hda3
- swap
+ $ extras/volume_id/vol_id -t /dev/sda6
+ ext3
Any comment/questions/concerns to me:
-Kay Sievers <kay.sievers@vrfy.org>
+ Kay Sievers <kay.sievers@vrfy.org>
~ianmdlvl / elogind.git / blobdiff