diff --git a/xCAT-server/lib/xcat/plugins/genimage.pm b/xCAT-server/lib/xcat/plugins/genimage.pm
index fc54f0619..3f068bb3f 100644
--- a/xCAT-server/lib/xcat/plugins/genimage.pm
+++ b/xCAT-server/lib/xcat/plugins/genimage.pm
@@ -170,12 +170,6 @@ sub process_request {
        $pkglist = $ref_linuximage_tab->{'pkglist'};
        
        $srcdir = $ref_linuximage_tab->{'pkgdir'};
-       my @pkgarray = split(/,/, $ref_linuximage_tab->{'pkgdir'});
-       if(scalar(@pkgarray) > 1)
-       {
-           $srcdir = @pkgarray[0];
-       }
-       
 
        $srcdir_otherpkgs = $ref_linuximage_tab->{'otherpkgdir'};
        $otherpkglist = $ref_linuximage_tab->{'otherpkglist'};
@@ -299,7 +293,7 @@ sub process_request {
    if ($interactive) { $cmd .= " --interactive" }
    if ($onlyinitrd) { $cmd .= " --onlyinitrd" }
    
-   if ($srcdir) { $cmd .= " --srcdir $srcdir";}
+   if ($srcdir) { $cmd .= " --srcdir \"$srcdir\"";}
    if ($pkglist) { $cmd .= " --pkglist $pkglist";}
    if ($srcdir_otherpkgs) { $cmd .= " --otherpkgdir \"$srcdir_otherpkgs\""; }
    if ($otherpkglist) { $cmd .= " --otherpkglist $otherpkglist"; }  
diff --git a/xCAT-server/share/xcat/netboot/ubuntu/genimage b/xCAT-server/share/xcat/netboot/ubuntu/genimage
index 4ae2c2f19..a35c2033f 100755
--- a/xCAT-server/share/xcat/netboot/ubuntu/genimage
+++ b/xCAT-server/share/xcat/netboot/ubuntu/genimage
@@ -228,10 +228,12 @@ unless ($onlyinitrd) {
 
    # Get the ubuntu repo path from osimage.pkgdir
    my @srcdirs = split(',', $srcdir);
-   my $pkgdir_internet; #only support one http mirror which will be used to create bootstrap
+   
+   my @pkgdir_internet; #Put all the http mirror in ths array, but only the first http mirror which will be used to create bootstrap
+   $srcdir = undef;
    foreach my $dir (@srcdirs) {
       if ($dir =~ /^http.*/){
-          $pkgdir_internet = $dir;
+          push @pkgdir_internet, $dir;
       } else {
           $srcdir = $dir;  #set $srcdir to be the one which is not http path
           find(\&isaptdir, <$dir/>);
@@ -259,14 +261,14 @@ unless ($onlyinitrd) {
    $repnum-=1;
 
    # Add the internet mirror
-   if ($pkgdir_internet) {
-      print $aptconfig "deb $pkgdir_internet\n\n";
+   if (@pkgdir_internet) {
+      foreach (@pkgdir_internet) {
+          print $aptconfig "deb $_\n\n";
+      }
    }
    close($aptconfig);
    mkpath "$rootimg_dir/etc";
 
-
-
    my $fd;
    open($fd,">>","$rootimg_dir/etc/fstab");
    print $fd "#Dummy fstab for dpkg postscripts to see\n";
@@ -292,11 +294,18 @@ unless ($onlyinitrd) {
    my $aptcmd2;
 
    # Check whether a local Ubuntu mirror is specified
-   # if linuximage.pkgdir has second mirror is set, we consider the second mirror as a full Ubuntu mirror
-   if ($pkgdir_internet) {
-       my $mirrorurl = $pkgdir_internet;
-       $mirrorurl =~ s/ .*$//g;    # get the url part of mirror path
-       $aptcmd2 = "--verbose --arch $uarch $dist $rootimg_dir $mirrorurl";
+   # if linuximage.pkgdir has http mirror is set, we consider the first http mirror 
+   # as a full Ubuntu mirror which will be used to create bootstrap
+   if (@pkgdir_internet) {
+       my $mirrorurl = $pkgdir_internet[0];
+       if ($pkgdir_internet[0] =~ /(http.*?) +([^ ]+)/) {
+           $mirrorurl = $1;
+           $dist = $2;
+           $aptcmd2 = "--verbose --arch $uarch $dist $rootimg_dir $mirrorurl";
+       } else {
+           print "Error: In pkgdir, the first http mirror path must includes http URL and distribute name.";
+           exit 1;
+       }
    } else {
       if ($uarch eq 'ppc64el') {
          $aptcmd2 = "--verbose --arch $uarch $dist $rootimg_dir http://ports.ubuntu.com/ubuntu-ports/";
@@ -305,9 +314,36 @@ unless ($onlyinitrd) {
       }
    }
 
-   mkpath("$rootimg_dir/var/lib/dpkg");
-   mkpath("$rootimg_dir/var/lib/apt");
+   print "Run cmd [$aptcmd1 $aptcmd2] to create rootimage bootstraps\n";
+   my $rc = system("$aptcmd1 $aptcmd2");
+   if ($rc) { 
+       print "Error: cannnot create bootstraps for rootimage. Make sure you specified full http mirror path.\n";
+       exit 1;
+   }
+   
+   # Prepare the installation mirror for the package install
+   print("Mount /proc, /dev, /sys, pkgdir and otherpkgdir to the rootimg.\n");
+   mount_chroot($rootimg_dir, $otherpkgsdir_local, $srcdir, $kerneldir);
+   
+   # Add mirrors from pkgdir attributes to rootimage for the pkg install from pkglist
+   open($aptconfig,">","$rootimg_dir/etc/apt/sources.list");
 
+   if ($srcdir) {
+       my $master = xCAT::TableUtils->get_site_Master();
+       print $aptconfig "deb http://$master$srcdir $dist main\n";
+   }
+
+   foreach (@pkgdir_internet) {
+       print $aptconfig "deb $_\n";
+   }
+
+   close($aptconfig);
+
+   # run apt-get upgrade to update any installed debs
+   my $aptgetcmd_update = $aptgetcmd . "&&". $aptgetcmdby . " upgrade  ";
+   $rc = system("$aptgetcmd_update");
+        
+   # Start to install pkgs in pkglist
    unless ($imagename) {
        $pkglist= imgutils::get_profile_def_filename($osver, $profile, $arch, $customdir, "pkglist");
        unless ($pkglist) {
@@ -370,40 +406,22 @@ unless ($onlyinitrd) {
                     push @npa, $p;
                 }
             }
-            $pkgnames .= join(',', @npa);
+            $pkgnames .= join(' ', @npa);
         }
         my $envlist;
         if(exists $pkg_hash{$pass}{ENVLIST}){
             $envlist = join(',', @{$pkg_hash{$pass}{ENVLIST}});
         }
 
-        print "$envlist $aptcmd1 --include=$pkgnames $aptcmd2\n";
-        my $rc = system("$envlist $aptcmd1 --include=$pkgnames $aptcmd2");
+        print "$envlist $aptgetcmdby install $pkgnames\n";
+        my $rc = system("$envlist $aptgetcmdby install --allow-unauthenticated $pkgnames");
         if ($rc) { 
-            print "apt invocation failed\n";
+            print "Failed to install packages $pkgnames\n";
             exit 1;
         }
     }
 
-    print("Mount /proc, /dev, /sys, pkgdir and otherpkgdir to the rootimg.\n");
-    mount_chroot($rootimg_dir, $otherpkgsdir_local, $srcdir, $kerneldir);
-
-    # Add the local repo from MN temporarily for apt-get update/upgrade
-    open($aptconfig,">","$rootimg_dir/etc/apt/sources.list");
-    print $aptconfig "deb file:///mnt/pkgdir/ $dist main\n";
-    if (-d "$rootimage_dir/mnt/kerneldir") {
-        print $aptconfig "deb file:///mnt/kerneldir/ $dist main\n";
-    }
-    close($aptconfig);
-
     {
-        # run apt-get upgrade to update any installed debs
-        # needed when running genimage again after updating software in repositories
-        #my $aptgetcmd_update = $yumcmd_base . " upgrade  ";
-        my $aptgetcmd_update = $aptgetcmd . "&&". $aptgetcmdby . " upgrade  ";
-        $rc = system("$aptgetcmd_update");
-        
-
         #############################################################
         # The section below is used to install kernel base and extra#
         #############################################################
@@ -411,10 +429,9 @@ unless ($onlyinitrd) {
             if ($kernelver) {
                 $kernelimage = "linux-image-$kernelver linux-image-extra-$kernelver linux-firmware";
             }
-            my $aptgetcmd_install = $aptgetcmd . "&&". $aptgetcmdby. " install --no-install-recommends ".$kernelimage;
+            my $aptgetcmd_install = $aptgetcmdby. " install --no-install-recommends ".$kernelimage;
             $rc = system("$aptgetcmd_install");
         }
-
     }
     
     #add the other package directory to for apt-get install
@@ -555,11 +572,6 @@ unless ($onlyinitrd) {
    print("Umount /proc, /dev, /sys, pkgdir and otherpkgdir to the rootimg.\n");
    umount_chroot($rootimg_dir);
 
-   # Add the local repo from MN
-   my $master = xCAT::TableUtils->get_site_Master();
-   open($aptconfig,">","$rootimg_dir/etc/apt/sources.list");
-   print $aptconfig "deb http://$master$srcdir $dist main\n";
-   close($aptconfig);
    `rm -fr $rootimg_dir/etc/apt/sources.list.d/genimage1.apt.list`;
    
    #recover the /etc/hosts & /etc/reslov.conf
@@ -1857,12 +1869,17 @@ sub mount_chroot {
    my $otherpkgdir = shift;
    my $pkgdir = shift;
    my $kerneldir = shift;
-   mkdir("$rootimage_dir/mnt/pkgdir");
-   mkdir("$rootimage_dir/mnt/otherpkgdir");
    #system("mount -o bind /dev $rootimage_dir/dev");
    #system("mount -o bind /proc $rootimage_dir/proc");
    #system("mount -o bind /sys $rootimage_dir/sys");
-   system("mount -o bind $pkgdir $rootimage_dir/mnt/pkgdir");
+   if ($pkgdir) {
+       if (-d $pkgdir) {
+           mkdir("$rootimage_dir/mnt/pkgdir");
+           system("mount -o bind $pkgdir $rootimage_dir/mnt/pkgdir");
+       } else {
+           print "The specified pkgdir $pkgdir does not exist!\n"
+       }
+   }
    if ($kerneldir){
       if(-d $kerneldir){
          mkdir("$rootimage_dir/mnt/kerneldir");
@@ -1873,6 +1890,7 @@ sub mount_chroot {
    }
 
    if ($otherpkgdir){
+      mkdir("$rootimage_dir/mnt/otherpkgdir");
       if(-d $otherpkgdir){
          system("mount --rbind $otherpkgdir $rootimage_dir/mnt/otherpkgdir");
       }else{