nfs: Authentication performance improvements

When file operations are sent to the NFS server, authorized filehandles
are cached using the exportid, mountid, gfid and host as the key to the
cache. This meant that any file OR directory will always fail on the
*first* fop to that filehandle since the cache used the gfid as part of
the key to the cache. However, if an export is authorized, this
effectively means that ALL subdirectories and files in the export
directory are authorized per the permissions of the export. This results
slow times to walking a directory structure over an NFS mount.

Change-Id: Iad811ad7255b454d1712e75a637478401d40791e
BUG: 1232165
Signed-off-by: Shreyas Siravara <sshreyas@fb.com>
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/11245
Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/xlators/nfs/server/src/auth-cache.c b/xlators/nfs/server/src/auth-cache.c
index b0cb7bf378d..67752ae6556 100644
--- a/xlators/nfs/server/src/auth-cache.c
+++ b/xlators/nfs/server/src/auth-cache.c
@@ -42,13 +42,13 @@ make_hashkey(struct nfs3_fh *fh, const char *host)
         gf_uuid_unparse (fh->gfid, gfid);
         gf_uuid_unparse (fh->mountid, mountid);
 
-        nbytes = strlen (exportid) + strlen (gfid) + strlen (host)
-                 + strlen (mountid) + 5;
+        nbytes = strlen (exportid) + strlen (host)
+                 + strlen (mountid) + 3;
         hashkey = GF_MALLOC (nbytes, gf_common_mt_char);
         if (!hashkey)
                 return NULL;
 
-        snprintf (hashkey, nbytes, "%s:%s:%s:%s", exportid, gfid,
+        snprintf (hashkey, nbytes, "%s:%s:%s", exportid,
                   mountid, host);
 
         return hashkey;