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75 lines
2.7 KiB
Plaintext
75 lines
2.7 KiB
Plaintext
vol_id - probe filesystem and read label and uuid
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This program is normally called from a udev rule, to provide udev with the
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filesystem type of a volume and the label and uuid to name a device node.
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vol_id opens the blockdevice node specified at the commandline. The following
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commandline switches are supported to specify what vol_id should print:
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--export prints all values
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-h prints help text
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-l prints the label of the volume
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-u prints the uuid of the volume
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vol_id will only return successful if the string asked for, is not
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empty. All trailing whitespace will be removed, spaces replaced by underscore
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and slashes ignored.
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fstype probe label uuid fsversion
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----------------------------------------------------
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linux swap * * * *
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ext * * * *
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reiserfs jr/3.5/3.6/4 * * * *
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fat (12, 16, 32) * * * *
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ntfs * * * *
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jfs * * * -
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xfs * * * -
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hfs (plus, wrapped) * * * -
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udf * * - -
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iso9660 * * - -
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ufs * - - -
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cramfs * * - -
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sysv * * - *
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luks * - * -
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hpfs * - - -
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romfs * * - -
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squashfs * - - -
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minix * - - *
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ocfs (1, 2) * * * *
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vxfs * - - *
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Raid members are detected to prevent the probing for a filesystem
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-----------------------------------------------------------------
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linux raid * - * *
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LVM 1 * - - -
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LVM 2 * - - *
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highpoint * - - -
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isw_raid * - - -
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lsi_raid * - - -
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nvidia_raid * - - -
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promise_raid * - - -
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silicon_raid * - - -
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via_raid * - - -
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If no label is found vol_id exits with nonzero and the rule will be
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ignored.
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To give it a try, you may call it on the commandline:
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$ extras/volume_id/vol_id --export /dev/sda6
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ID_FS_USAGE=filesystem
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ID_FS_TYPE=ext3
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ID_FS_VERSION=1.0
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ID_FS_UUID=3e999973-00c9-4917-9442-b7633bd95b9e
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ID_FS_LABEL=devel
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ID_FS_LABEL_SAFE=devel
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$ extras/volume_id/vol_id -l /dev/sda6
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devel
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$ extras/volume_id/vol_id -t /dev/sda6
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ext3
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Any comment/questions/concerns to me:
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Kay Sievers <kay.sievers@vrfy.org>
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