bash> cat /proc/lvm/VGs/data/LVs/develop name: /dev/data/develop size: 20971520 access: 3 status: 1 number: 3 open: 1 allocation: 2 device: 58:03 (My VG is data, my LV is develop), the last line has the device number on it. The other place to look is: bash> ls -la /dev/data/develop brw-rw---- 1 root disk 58, 3 Apr 12 17:56 develop 58,3 is (major, minor). The trick is figuring out which ones are decimal, and which ones are hex. I believe the ls -la are decimal, but when you put it in for root= it has to be in hex. In this case, I believe 58 is the major, and 3 is the minor. (I could be completely wrong on that decimal/hex thing, I just remember that being an issue for me in the past when looking at root= on the command line once in the past). Ahhh, looking a bit more: bash> stat /dev/data/develop File: "/dev/data/develop" Size: 0 Blocks: 0 IO Block: 4096 Block Device Device: 309h/777d Inode: 16521 Links: 1 Device type: 3a,3 Access: (0660/brw-rw----) Uid: ( 0/ root) Gid: ( 6/ disk) Access: Fri Apr 12 17:56:53 2002 Modify: Fri Apr 12 17:56:53 2002 Change: Fri Apr 12 17:56:53 2002 Which would confirm that root= must be in hex, 3a (hex) = 58 (decimal). It has to be 4 digits long so in this case it would be "root=3a03". The Device Type: is where the 3a03 comes from... Hope this helps. Kirby James B. Byrne wrote: > On Thu, 30 May 2002 19:45:33 +0200 > Thierry DE CARVALHO <thierry.decarvalho@online.fr> wrote: > > >>Try with grub (here /dev/vg00/lvol1 is the root fs): >> >>title=GNU/Linux Debian 2.2 (potato) >>kernel (hd0,1)/vmlinuz-2.2.19 root=3a00 ramdisk_size=8192 vga=10 >># ^^^^ <major><minor> of the lv >># device >>in hex >>initrd (hd0,1)/initrd-lvm-2.2.19.gz > > > I am afraid that this does not make a lot of sense to me. Where > does one get the major/minor numbers for the logical volume? > > Regards, > Jim > --- e-mail is NOT a secure channel > James B. Byrne mailto:ByrneJB@Harte-Lyne.ca > Harte & Lyne Limited http://www.harte-lyne.ca > 9 Brockley Drive vox: +1 905 561 1241 > Hamilton, Ontario fax: +1 905 561 0757 > Canada L8E 3C3 > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
