On Fri, Jan 20, 2012 at 01:19:00PM +0400, Michael Tokarev wrote: > The "problem" is that kernel does not know what /dev/mapper > is, or what does /dev/r/usr thing mean. It knows these by > their canonical (and meaningless) dm-N names, like this: > > [ 6.887981] EXT4-fs (dm-0): mounted filesystem with ordered data mode. > Opts: (null) > [ 6.917555] EXT4-fs (dm-1): mounted filesystem with ordered data mode. > Opts: usrquota > > Go figure which is dm-0 and which is dm-1 (lvm is here)! > > My point is that actually, _both_ /dev/mapper/r-usr and > /dev/r/usr are wrong! But at least they - hopefully - > lead to the actual device, unlike kernel messages I > mentioned above which leads to nothing due to /dev/dm-0 > non-existing.
At least on my system (udev), they certainly do exist, for example: % ls -l /dev/mapper/ravenclaw-root lrwxrwxrwx 1 root root 7 Jan 20 09:01 /dev/mapper/ravenclaw-root -> ../dm-0 % ls -l /dev/ravenclaw/root lrwxrwxrwx 1 root root 7 Jan 20 09:01 /dev/ravenclaw/root -> ../dm-0 % ls -l /dev/dm-0 brw-rw---T 1 root disk 253, 0 Jan 20 09:01 /dev/dm-0 So the dm-n devices all do exist, and one can work out which logical volume each represent by looking at the symlinks. Regards, Roger -- .''`. Roger Leigh : :' : Debian GNU/Linux http://people.debian.org/~rleigh/ `. `' Printing on GNU/Linux? http://gutenprint.sourceforge.net/ `- GPG Public Key: 0x25BFB848 Please GPG sign your mail. -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20120120102102.gf8...@codelibre.net
