[Lunar-bugs] [support] /dev/shm not mounted

[lunar-bugs at lunar-linux.org]

 Project:      lunar-linux
 ID:           
 Version:      <none>
 Component:    moonbase (modules)
 Category:     support requests
 Priority:     normal
 Assigned to:  <unassigned>
 Reported by:  dveatch
 Updated by:   sofar
 Status:       active


note: /dev/shm isn't used anymore (the original implementation is
unofficially obsoleted). The new name "tmpfs" is a slightly different
implementation and glibc doesn't really require it as far as I have
every seen(feel free to add comments if you have).

the current tmpfs functions well for locations like /var/lock, /var/run
and /tmp, which should be empty after a reboot. Note /var/tmp is NOT
supposed to be wiped on reboot!

sofar



Previous comments:
------------------------------------------------------------------------

Sun, 01/23/2005 - 03:33 : dveatch

Not sure what category to put this under... anyway.

I have noticed for sometime now with 2.6 kernels on boot up /dev/shm
does not get mounted. This happened using devfs or udev. I didn't
really think to much about it since it didn't seem to impact anything. 

To make a long story short. I ended up in
/usr/src/linux-2.6.11-rc1/Documentation/filesystems/tmpfs.txt. The
paragraph of interest is;

2) glibc 2.2 and above expects tmpfs to be mounted at /dev/shm for
POSIX shared memory (shm_open, shm_unlink).
 Adding the following

   line to /etc/fstab should take care of this:

 tmpfs /dev/shm tmpfs defaults 0 0

   Remember to create the directory that you intend to mount tmpfs on  
if necessary (/dev/shm is automagically created if you use devfs).


Made the change and it now mounts.

-- 
View: http://lunar-linux.org/?q=node/view/694
Edit: http://lunar-linux.org/?q=project/comments/add/694