[Pvfs2-developers] genconfig handle assignment

[Pete Wyckoff]

We're trying to upgrade from HEAD as of 2006-04-15 to 2.6.1.
There's little fixes I will check in, but I need some advice on
this patch below.

It works around changes to genconfig that went in on 2006-06-10
by slang:
http://www.pvfs.org/fisheye/browse/PVFS/src/apps/admin/pvfs2-genconfig?r1=1.54&r2=1.55

We would like to preserve the same handle ranges, and specify
on the genconfig command line:

    --first-handle=4 \
    --last-handle=4294967298 \
    --root-handle=1048576 \

but the $count in the code as it was, was just data servers.  The
handle range needs to include metadata servers too.  Tell me if this
should be handled better than how I hacked around the issue.

Turns out it won't matter this time as we have to rebuild the
data storage anyway due to the "dir_ent" -> "de" change.  There was
no warning on server startup about that, though.

		-- Pete


--- src/apps/admin/pvfs2-genconfig	2006-12-19 11:17:04.000000000 -0500
+++ oscbw	2006-12-19 11:28:04.000000000 -0500
@@ -222,11 +222,13 @@
 
     # divide handle range space equally among servers ((2^32)-1 for now)
     my($total_num_handles_available, $start, $end, $i, $step, $num_ranges);
-    $num_ranges = $count;
     $total_num_handles_available = $last_handle - $first_handle + 1;
 
     # since meta and data handle ranges must be split, increment
     # num nodes for calculation purposes below
+    my @meta_aliases = get_aliases($META_ENDPOINT);
+    my @io_aliases = get_aliases($IO_ENDPOINT);
+    $num_ranges = scalar(@meta_aliases) + scalar(@io_aliases);
     $step = sprintf("%lu",($total_num_handles_available / $num_ranges));
 
     print $target "\n<Filesystem>\n";
@@ -241,7 +243,6 @@
 
     $start = $end = $first_handle - 1;
 
-    my @meta_aliases = get_aliases($META_ENDPOINT);
     @meta_aliases = sort @meta_aliases;
     foreach my $ma (@meta_aliases)
     {
@@ -253,7 +254,6 @@
     print $target "\t</MetaHandleRanges>\n";
     print $target "\t<DataHandleRanges>\n";
 
-    my @io_aliases = get_aliases($IO_ENDPOINT);
     @io_aliases = sort @io_aliases;
     foreach my $ia (@io_aliases)
     {