Messages in this thread | | | Subject | Re: no need for a devfs | From | (Scott Laird) | Date | Mon, 12 Jan 1998 10:44:48 -0800 |
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In message <6lcd3noHw-B@khms.westfalen.de>, Kai Henningsen writes: > >What you probably really want is something like this: > >* for each partition, determine a unique id somehow (ext2 already has > this, and so does FAT) > >* Use this id to identify the partition
>And it works for every disk type, not only SCSI disks. > >You could have the kernel advertize these names in /proc/disks/ or >something similar.
You don't really need kernel support for this; as long as you can find your root filesystem, it's trivial to produce a set of symlinks to the right devices. Here's a 2-minute perl script that creates /dev/e2fs/UUID entries for all ext2 filesystems on the system (or at least all on /dev/sd* or /dev/ha*). It's not great perl, but it works.
#!/usr/bin/perl -w
@drives=`ls /dev/sd* /dev/hd*`;
foreach $drive (@drives) { chomp($drive); open(DUMPE2FS,"/sbin/dumpe2fs $drive 2>&1 |") or next; while (<DUMPE2FS>) { if(/Filesystem UUID:\W+([-0-9a-f]+)/) { print "Drive: $drive ID: $1\n"; symlink("$drive","/dev/ext2/$1"); } } }
Scott
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