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Udev rule to map partition labels to device links
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Alighieri
Tux's lil' helper
Tux's lil' helper


Joined: 27 Jan 2005
Posts: 88

PostPosted: Wed Jul 13, 2005 8:58 pm    Post subject: Udev rule to map partition labels to device links Reply with quote

It is sometimes useful to refer to a disk partition by its partition label rather than the device name. First, place the following:
Code:
# Maps ext2/3 partition labels to symlinks
SUBSYSTEM="block", PROGRAM="/sbin/e2label %r/%k", MATCH="?*", SYMLINK="e2label/%c%e"
into the file /etc/udev/rules.d/10-local-udev.rules. This could be tailored a bit [done], but does the job.

Now use e2label to label an ext2/3 partition, e.g,
Code:
e2label /dev/hd4 test


Then run
Code:
udevstart

There should be a device symlink at /dev/e2label/test pointing to /dev/hda4. You can now use these device links in /dev/e2label in your fstab, etc.

Update: changed to disallow empty labels and to append a number to duplicate symlinks.


Last edited by Alighieri on Tue Jul 19, 2005 6:52 pm; edited 4 times in total
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manny15
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Joined: 01 Dec 2002
Posts: 471
Location: USA

PostPosted: Wed Jul 13, 2005 9:59 pm    Post subject: Reply with quote

oooo, that's cool!
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fangorn
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Joined: 31 Jul 2004
Posts: 1886

PostPosted: Wed Jul 20, 2005 8:40 am    Post subject: Reply with quote

Yes it really is!!!

Is there by any chance a similar tool for reiserfs???

don't wanna reformat 400 GB :twisted:
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