Description of problem:
This bug is continuation of the bz1427231. We get ugly traceback, we we don't have free space for cdn-sync.

Version-Release number of selected component (if applicable):
spacewalk-backend-2.5.3-121.el6sat

How reproducible:
100%

Steps to Reproduce:

> dd if=/dev/zero of=/disk bs=1M count=1024
> losetup /dev/loop0 /disk
> mkfs.ext4 /dev/loop0

> umount /var/satellite/
> mount /dev/loop0 /var/satellite/
> df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/vda1        40G   13G   25G  35% /
tmpfs           1,9G  4,0K  1,9G   1% /dev/shm
/dev/loop0      976M  1,3M  924M   1% /var/satellite

> cdn-sync
...

06:16:17 1736/19500 : cjkuni-fonts-ghostscript-0.2.20080216.1-35.el6.noarch.rpm
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/urlgrabber/grabber.py", line 1105, in _retrieve
    self.fo.write(buf)
IOError: [Errno 28] No space left on device
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/urlgrabber/grabber.py", line 1105, in _retrieve
    self.fo.write(buf)
IOError: [Errno 28] No space left on device
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/urlgrabber/grabber.py", line 1105, in _retrieve
    self.fo.write(buf)
IOError: [Errno 28] No space left on device
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/urlgrabber/grabber.py", line 1105, in _retrieve
    self.fo.write(buf)
IOError: [Errno 28] No space left on device
06:16:18 1737/19500 : cjkuni-ukai-fonts-0.2.20080216.1-34.el6.noarch.rpm (failed)
06:16:18 1738/19500 : cjkuni-uming-fonts-0.2.20080216.1-34.el6.noarch.rpm (failed)
06:16:18 1739/19500 : cjkuni-ukai-fonts-0.2.20080216.1-35.el6.noarch.rpm (failed)
06:16:18 1740/19500 : cjkuni-ukai-fonts-0.2.20080216.1-36.el6.noarch.rpm (failed)
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/urlgrabber/grabber.py", line 1105, in _retrieve
    self.fo.write(buf)
IOError: [Errno 28] No space left on device
06:16:18 1741/19500 : cjkuni-uming-fonts-0.2.20080216.1-35.el6.noarch.rpm (failed)

Process has been interrupted.