More comments on making generic images.

Increase max wait time for images based on 6GB at 1.6MB/sec (72 minutes)
Fix a couple of print statements.

doc/create-generic-image.txt

@@ -26,6 +26,10 @@ How to make a generic image from a Utah one:
     so there is no point.
 
 2e. Install generic kernels.
+
+   [ As of 8/13/07 there are prebuilt versions of these in
+     http://www.emulab.net/downloads/generic-kernels-4.10.tar.gz. ]
+
    Build kernels from the various TESTBED-* configs and install them.
    For FBSD 4.x:
 	TESTBED-GENERIC		  -> /kernel.100HZ

os/create-image

@@ -2,7 +2,7 @@
 
 #
 # EMULAB-COPYRIGHT
-# Copyright (c) 2000-2004 University of Utah and the Flux Group.
+# Copyright (c) 2000-2004, 2007 University of Utah and the Flux Group.
 # All rights reserved.
 #
 
@@ -93,7 +93,7 @@ else {
 # if the user is not in the proper group.
 #
 if (system("$sudo $zipper $slice $device $filename")) {
-    print STDERR "*** Failed to create image!";
+    print STDERR "*** Failed to create image!\n";
     exit 1;
 }
 

tbsetup/libadminmfs.pm.in

 #!/usr/bin/perl -wT
 #
 # EMULAB-COPYRIGHT
-# Copyright (c) 2005, 2006 University of Utah and the Flux Group.
+# Copyright (c) 2005, 2006, 2007 University of Utah and the Flux Group.
 # All rights reserved.
 #
 # Admin MFS library.  Routines related to getting into and out of the
@@ -537,7 +537,7 @@ sub TBAdminMfsRunCmd($$@)
     if (scalar(@nodes) != scalar(@succeeded)) {
 	if (scalar(@failed) > 0) {
 	    print STDERR "*** $me:\n".
-		"    Failed to run command on @failed\n";
+		"    Command run failed on @failed\n";
 	    push(@{$failedref}, @failed)
 		if (defined($failedref));
 	}

utils/create_image.in

@@ -13,15 +13,16 @@ use File::Basename;
 # Tuneables:
 #
 # $maxwait	max wall clock time to allow, progress or not
-#		Empirically we have observed about 1.8MB/sec on a pc850,
-#		so 40 minutes should be sufficient for a 4GB image.
+#		Empirically we have observed about 1.6MB/sec on a pc850
+#		for a Windows image (the slowest to create), so figuring
+#		1.5MB/sec for a 6GB max image works out to around 72 minutes.
 # $idlewait	max time to wait between periods of progress
 # $checkwait	time between progress checks (must be int div of $idlewait)
 # $reportwait	time between progress reports (must be multiple of $checkwait)
 #
 # $maximagesize	max size in bytes of an image
 #
-my $maxwait      = (40 * 60);
+my $maxwait      = (72 * 60);
 my $idlewait     = ( 8 * 60);
 my $reportwait   = ( 2 * 60);
 my $checkwait    = 15;