[SOLVED]cannot boot after chmod 1777 /tmp

Soumyadeep · 2009-10-10 07:39:37

today when i was booting arch while starting gdm it said that "a greeter application appears to be crashing Attempting to use a different one" and it never started gdm. so i searched google with links and found a post in this forum about changing tmp folder permission by "chmod 1777 /tmp". I did that and after rebooting arch is unable to startup . while starting network it says something about cannot write to temp file , device full, and the same while starting other daemons.
I cannot log into any tty.
pls help me guys...............

Last edited by Soumyadeep (2009-10-10 14:28:48)

quarkup · 2009-10-10 07:50:14

~ $ ll / # its an alias for ls -l and some other nice options
total 104K
drwxr-xr-x 2 root 4,0K 08/Out/2009 bin
drwxr-xr-x 3 root 4,0K 10/Set/2009 boot
drwxr-xr-x 14 root 5,6K 10/Out/2009 dev
drwxr-xr-x 86 root 12K 10/Out/2009 etc
drwxr-xr-x 5 root 4,0K 10/Ago/2009 home
drwxr-xr-x 10 root 4,0K 04/Out/2009 lib
drwx------ 2 root 16K 18/Set/2008 lost+found
drwxr-xr-x 9 root 4,0K 10/Out/2009 media
drwxr-xr-x 5 root 4,0K 24/Set/2009 mnt
drwxr-xr-x 5 quarkup 4,0K 09/Out/2009 opt
dr-xr-xr-x 119 root 0 10/Out/2009 proc
drwxr-x--- 30 root 4,0K 18/Set/2009 root
drwxr-xr-x 2 root 12K 09/Out/2009 sbin
drwxr-xr-x 4 quarkup 4,0K 20/Jul/2009 srv
drwxr-xr-x 12 root 0 10/Out/2009 sys
drwxrwxrwt 10 root 20K 10/Out/2009 tmp
drwxr-xr-x 13 root 4,0K 08/Out/2009 usr
drwxr-xr-x 17 root 4,0K 27/Set/2009 var

actually
drwxrwxrwt 10 root 20K 10/Out/2009 tmp
is the same as

has the permissions 1777 plus the sticky bit "t"
the user is root

actually the safest option (and it will work anyway)
is to enter the archlinux cd-rom and mount your linux installation (you can then chroot it if you need to try if it's fine).

mount your linux partition somewhere ( mkdir /mnt/recovery && mount "partition device" /mnt/recovery -> u must do this as root)

note: /dev/sdaX (X is the actual partition of the instalation)
could be /dev/hdaX instead, or there are few other alternatives to this device-name.

try to do something as:

su -c chmod +rwxt /tmp
su -c chmod 777 /tmp

finally, if you want to chroot (probably you won't need this step), you must check the man-pages or the WIKI.
"man chroot" should give you enought info

good luck

Last edited by quarkup (2009-10-10 08:01:04)

Soumyadeep · 2009-10-10 08:34:43

well after rebooting now it seems i can log in a tty , but i cant succesfully write a file into any directory other than my home directory, it will create a file but wont let me write and save anything to it.

loafer · 2009-10-10 08:47:31

Check the permissions on "/" as shown above and post the results. There will actually be quite a few directories that you cannot write files to as a normal user. Is anything not working now? Are you getting errors trying to run apps etc?

Soumyadeep · 2009-10-10 09:23:15

here's my ls -l o/p(i had to manuall type it in):
total 105
-rwxr-xr-x 1 root root 29580 babai
drwxr-xr-x 2 root root 4096 bin
drwxr-xr-x 4 root root 1024 boot
drwxr-xr-x 15 root root 5720 dev
drwxr-xr-x 63 root root 4096 etc
drwxr-xr-x 6 root root 4096 home
drwxr-xr-x 9 root root 4096 lib
drwx------ 2 root root 16384 lost+found
drwxr-xr-x 7 root root 4096 media
drwxr-xr-x 2 root root 4096 mnt
drwxr-xr-x 2 root root 4096 opt
dr-xr-xr-x 75 root root 0 proc
drwxr-x--- 16 root root 4096 root
drwxr-xr-x 2 root root 4096 sbin
drwxr-xr-x 4 root root 4096 srv
drwxr-xr-x 12 root root 0 sys
drwxrwxrwt 4 root root 4096 tmp
drwxr-xr-x 6 root root 4096 user
drwxr-xr-x 10 root root 4096 usr
drwxr-xr-x 15 root root 4096 var

and no nothings working, hal,dbus,gdm,network nothing wont start saying disk out of space while creating files

Allan · 2009-10-10 09:25:55

Post the output of "df -h".

Soumyadeep · 2009-10-10 10:20:02

here it goes:

Filesystem Size Used Avail Use% Mounted on
none 442M 128k 442M 1% /dev
none 442M 0 442M 0% /dev/shm
/dev/sda1 99M 11M 83M 12% /boot
/dev/sda4 66G 26G 37G 41% /home

quarkup · 2009-10-10 10:32:18

my "df -h" output

~ $ /bin/df -h
Sist.fichs Tama Ocup Livre Uso% Montado em
/dev/sda2 14G 9,4G 4,0G 71% /
none 1013M 164K 1013M 1% /dev
none 1013M 284K 1013M 1% /dev/shm
/dev/sda3 40G 29G 12G 73% /media/winXP

shouldn't you have the root partition ???

you just have /boot and /home, but the rest of / ????

/dev/sda2 14G 9,4G 4,0G 71% /

I'm not that sure, but guess u will need to install arch again

loafer · 2009-10-10 10:57:44

What does "sudo fdisk -l" show? Are you doing this from a live CD or are you logged in to your PC?

Soumyadeep · 2009-10-10 13:26:34

my "fdisk -l" is like this (i am logged into my pc)

Disk /dev/sda:80.8 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units=cylinders of 160657512=8225280 bytes
Disk identifier:0x0c299128

Device Boot Start End Block Id System
/dev/sda1 * 1 13 104422 83 linux
/dev/sda2 14 46 265072+ 82 linux swap/solaris
/dev/sda3 47 1003 7687102+ 83 linux
/dev/sda4 1004 9729 70091595 83 linux

So why is that the root partition is not showing in "df -h" ?

Last edited by Soumyadeep (2009-10-10 13:27:45)

loafer · 2009-10-10 13:54:47

I do not know why it doesn't show. Does the mount command show it mounted on /dev/sda3? Also try "du -hs /var" and "du -hs /tmp" to see if they are filling up the disk.

Soumyadeep · 2009-10-10 14:28:11

got it fixed guys!!!!! a "du -hs /var" showed a huge 4.5 gigs
it seems that a pacman update got crashed(probably due to internet connection probs) and created huge part files of xulrunner(1.5gb) and qt2(2gb), removing them got it fixed
now everythings working.
Thanks everyone!!!!!!!!!!!!!!!!!!!!!!

Mr.Elendig · 2009-10-10 15:04:11

Soumyadeep wrote:

got it fixed guys!!!!! a "du -hs /var" showed a huge 4.5 gigs
it seems that a pacman update got crashed(probably due to internet connection probs) and created huge part files of xulrunner(1.5gb) and qt2(2gb), removing them got it fixed
now everythings working.
Thanks everyone!!!!!!!!!!!!!!!!!!!!!!

Known bug, fixed in the latest pacman version.

Arch Linux

#1 2009-10-10 07:39:37

[SOLVED]cannot boot after chmod 1777 /tmp

#2 2009-10-10 07:50:14

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#3 2009-10-10 08:34:43

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#4 2009-10-10 08:47:31

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#5 2009-10-10 09:23:15

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#6 2009-10-10 09:25:55

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#7 2009-10-10 10:20:02

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#8 2009-10-10 10:32:18

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#9 2009-10-10 10:57:44

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#10 2009-10-10 13:26:34

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#11 2009-10-10 13:54:47

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#12 2009-10-10 14:28:11

Re: [SOLVED]cannot boot after chmod 1777 /tmp

#13 2009-10-10 15:04:11

Re: [SOLVED]cannot boot after chmod 1777 /tmp

Board footer