Arch Linux

leniviy

Member

Registered: 2009-05-23

Posts: 177

[SOLVED] corresponding /dev/dm-* for each /dev/mapper/isw_*

I want to automate conversion of /dev/mapper/isw_ebaifefjbf_Volume0 to UUID form in fstab.
Arch installer creates fstab with /dev/mapper/ devices.
The problem is /dev/disk/by-uuid/* are symlinks to /dev/dm-* devices .
For example, /dev/dm-6 and /dev/mapper/isw_ebaifefjbf_Volume0p9 refer to the same partition. I tried to use 'readlink -e' but they're both NOT symlinks and have different inode

Last edited by leniviy (2011-04-17 06:33:18)

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Arch 64, xfce4

leniviy

Member

Registered: 2009-05-23

Posts: 177

Re: [SOLVED] corresponding /dev/dm-* for each /dev/mapper/isw_*

fn_finduuid() {
    can1=`readlink -e "$1"`
    majmin1=`stat -c %t-%T "$can1"`
    for L in `ls /dev/disk/by-uuid/`; do
        can2=`readlink -e "/dev/disk/by-uuid/$L"`
        majmin2=`stat -c %t-%T "$can2"`
        if [ "$majmin1" = "$majmin2" ]; then
            echo "$L"
        fi    
    done
}

hell, why noone ever answers me!

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Arch 64, xfce4