On Fri, Jul 18, 2014 at 09:45:43PM +0200, Csányi Pál wrote:

I forgot to write down here some more information:

$ free -h

total used free shared buffers cached Mem: 5.8G 4.2G 1.6G 2.9G 64M 3.2G -/+ buffers/cache: 928M 4.9G Swap: 511M 0B 511M

/etc/fstab /dev/sda3 / ext4 rw,relatime,data=ordered 0 1 /dev/cdrom /media/cdrom iso9660 ro,user,noauto,unhide 0 0 /swapfile none swap defaults 0 0

The best way to overcome this error is to allocate the space you need in fstab as per the instructions on the fstab page on ArchWiki. John