SuSE

Hi guys, need some help with a simple renaming task under SUSE.

I'm trying to use a custom name for a disk device under OpenSUSE.

I have a device named "c0d0" which contains a partition "c0d0p1"

/dev/cciss/c0d0p1 is the name of the file as well as the name reported by "fdisk".

I'd like to change the name from "c0d0p1" to "c0d0pA". How can I achieve that?

The disk is currently empty so there is no data to worry about.

Thanks.

This is a device file, so I would suggest not doing that. However, you can go about doing things like this with udev.

It's a device file, meaning, its name is autogenerated by udev and has nothing to do with the contents of the disk. Unless you coerce udev into naming it what you want somehow, it will just come back as its old name next reboot.

Messing with existing udev rules, particularly the important ones which create disk names, can be dicey. udev also has rules to create symlinks for more convenient names in /dev/disk/. If there's not ones suiting you in there already, perhaps you could add a rule to add more symlinks more to your purpose. That way, if your naming rule messes up, you haven't cut yourself off from all your disks...

Hmm, I hadn't considered using a link but that would definitely do the trick.

Ok, so I copied an existing rule on /etc/udev/rules.d/ and modified it a bit just to test the behavior, then I ran udevcontrol reload_rules but I don't see the link getting created under /dev/disk/by-id (which is the path I used for my rule).

Other default links are still there though.

The rule looks like this:

Code:

KERNEL=="sd*[0-9]|cciss*p[0-9]*", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_BUS}-$env{ID_SERIAL}-A"

Am I missing something?

getting udev rules to properly reload without rebooting can be a pain, I'm not sure if that's the correct method. 'udevcontrol' looks like a distribution-specific thing, too.

What do you need from the new rule that the old ones don't provide?

[edit] I see a lower-case $env vs an upper-case ENV. Ditch the $ and make them uppercase.

Basically I need the partition name to end with a letter (c0d0pA) instead of a number (c0d0p1).

Well, those two (uppercase and lowercase) were already defined in the file and almost all of the default rules have both.

I have not modified anything besides copying an existing rule and appending a letter "A" at the end.

Anyway, just in case I changed the $env to ENV and it's still not creating the symlinks. :/

getting udev rules to properly reload without rebooting can be a pain, I'm not sure if that's the correct method. 'udevcontrol' looks like a distribution-specific thing, too.

---------- Post updated at 12:49 PM ---------- Previous update was at 12:48 PM ----------

If applicable, another thing you could do is remove the module for that device and reload it, which will cause whatever rules are there to be re-applied. Just reloading the rules may not be enough to actually get udev to use those rules, that happens when the kernel tells it a new device has arrived...