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Description of problem:
Inspection of /tmp/install.log after ftp network build with latest Errata applied to the RPMS directory reveals
Installing kernel.
awk: cmd. line:2: fatal: cannot open file `/etc/fstab' for reading (No such file or directory)
awk: cmd. line:2: fatal: cannot open file `/etc/fstab' for reading (No such file or directory)

I traced the awk commands back to lines 271 and 293 of /sbin/mkinitrd from mkinitrd-3.2.6-1.rpm.  "/etc/fstab" does not appear to exist at 
the time the kernel is installed during the Anaconda build.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.Setup RH7.1 network install server with latest kernel errata (kernel-2.4.6-12) included
2.run a network ftp build
3.view /tmp/install.log after build and initial reboot
	

Actual Results:  <Snipped> output of /tmp/install.log

Installing ipchains.
Installing kernel.
awk: cmd. line:2: fatal: cannot open file `/etc/fstab' for reading (No such file or directory)
awk: cmd. line:2: fatal: cannot open file `/etc/fstab' for reading (No such file or directory)
Installing devfsd


Expected Results:  
Installing ipchains.
Installing kernel.
Installing devfsd.

Additional info:

Based on my limited knowledge of awk it appears that this would only affect those whose root device is a on a loopback or they have the 
root filesystem type as a loadable module