[gentoo-user] [SOLVED] Setting size of /dev/shm or cleaning up ancient /etc/fstab

["Walter Dnes" <waltdnes@waltdnes.org>]

On Wed, May 08, 2013 at 08:43:53AM +0200, Alan McKinnon wrote
> 
> a tmpfs defaults to half ram size. If yours is 10M, then quite obviously
> you run some code somewhere that does it different :-)
> 
> You could go through the effort of tracking down why. Unless this is a
> default behaviour of mdev which needs debugging, pathcing and fixing, I
> don't think you should spend any brain cycles on this, just add this to
> the mount options
> 
> size=50%

  I think I found the root of the problem, in /etc/init.d/mdev

mount_it()
{
        if fstabinfo --quiet /dev ; then
                mount -n /dev
        else
                # Some devices require exec, Bug #92921
                mount -n -t tmpfs -o "exec,nosuid,mode=0755,size=10M" mdev /dev
        fi
}

  I replaced "size=10M" with "size=50%" and rebooted.  It now works
properly.  Bug https://bugs.gentoo.org/show_bug.cgi?id=469226 filed.

-- 
Walter Dnes <waltdnes@waltdnes.org>
I don't run "desktop environments"; I run useful applications