[SOLVED] mtab forgets device via UUID

Question

Hello,
my hd is mounted via UUID (seems to be standard with arch installation), its just that for one of the partitions the UUID is nozt changed into a device-name like /dev/sda3.
So if I do a df the output is:
udev 10240 216 10024 3% /dev
/dev/disk/by-uuid/8d2a1a14-7050-41d3-b7ca-f5460ab6770e
10323128 4663572 5135272 48% /
shm 1019152 0 1019152 0% /dev/shm
/dev/sda4 142416680 6951072 128231260 6% /home
/dev/sda1 64240 14662 46252 25% /boot
same is true for /etc/mtab and /proc/mounts. At which time is the name-switching between UUID and normal device names made?
Thanks a lot in advance!
Last edited by miro279 (2010-10-07 18:17:38)

Answer 1

for me in every output I can only find the UUID for /dev/sda3:
findmnt -rnu -o SOURCE,TARGET,FSTYPE,OPTIONS
proc /proc proc rw,relatime
sys /sys sysfs rw,relatime
udev /dev devtmpfs rw,nosuid,relatime,size=10240k,nr_inodes=218530,mode=755
/dev/disk/by-uuid/8d2a1a14-7050-41d3-b7ca-f5460ab6770e / ext4 rw,relatime,barrier=1,data=ordered
devpts /dev/pts devpts rw,relatime,mode=600,ptmxmode=000
shm /dev/shm tmpfs rw,nosuid,nodev,relatime
/dev/sda4 /home ext4 rw,relatime,barrier=1,data=ordered
/dev/sda1 /boot ext2 rw,relatime,errors=continue
and also
cat /proc/self/mountinfo
12 15 0:3 / /proc rw,relatime - proc proc rw
13 15 0:12 / /sys rw,relatime - sysfs sys rw
14 15 0:5 / /dev rw,nosuid,relatime - devtmpfs udev rw,size=10240k,nr_inodes=218530,mode=755
15 1 8:3 / / rw,relatime - ext4 /dev/disk/by-uuid/8d2a1a14-7050-41d3-b7ca-f5460ab6770e rw,barrier=1,data=ordered
18 14 0:10 / /dev/pts rw,relatime - devpts devpts rw,mode=600,ptmxmode=000
19 14 0:15 / /dev/shm rw,nosuid,nodev,relatime - tmpfs shm rw
20 15 8:4 / /home rw,relatime - ext4 /dev/sda4 rw,barrier=1,data=ordered
21 15 8:1 / /boot rw,relatime - ext2 /dev/sda1 rw,errors=continue
Where is the source for all of this?
Also, blkid does know the right translation:
blkid
/dev/sda1: UUID="dd98976f-fc27-4a32-8db7-d92fa36317e4" TYPE="ext2"
/dev/sda2: UUID="28955678-413a-4fd5-a459-2b129667c94e" TYPE="swap"
/dev/sda3: UUID="8d2a1a14-7050-41d3-b7ca-f5460ab6770e" TYPE="ext4"
/dev/sda4: UUID="b3d9152c-61f2-4fb2-89d3-337ee1764b04" TYPE="ext4"
for some reason its just not passed to mtab for one of these devices.. strange problem
Last edited by miro279 (2010-10-07 12:48:15)