features/bit-rot-stub: implement mknod fop

With the absence of mknod() fop implementation in bitrot stub,
further operations that trigger versioning resulted in crashes
as they expect the inode context to be valid. Therefore, this
patch implements mknod() following similar simantics to fops
such as create().

Furthermore, bitrot stub test C program is fixed to stop lying
and validate obj versions according to the versioning protocol.

Change-Id: If76f252577445d1851d6c13c7e969e864e2183ef
BUG: 1221914
Original-Author: Raghavendra Bhat <raghavendra@redhat.com>
Signed-off-by: Venky Shankar <vshankar@redhat.com>
Reviewed-on: http://review.gluster.org/10790
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/bitrot/bug-1221914.t b/tests/bitrot/bug-1221914.t
new file mode 100644
index 00000000000..85715e5a83c
--- /dev/null
+++ b/tests/bitrot/bug-1221914.t
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../volume.rc
+. $(dirname $0)/../nfs.rc
+
+STUB_SOURCE=$(dirname $0)/br-stub.c
+STUB_EXEC=$(dirname $0)/br-stub
+
+cleanup;
+
+TEST glusterd
+TEST pidof glusterd
+
+## Create a distribute volume (B=2)
+TEST $CLI volume create $V0 $H0:$B0/${V0}1 $H0:$B0/${V0}2;
+EXPECT "$V0" volinfo_field $V0 'Volume Name';
+EXPECT 'Created' volinfo_field $V0 'Status';
+EXPECT '2' brick_count $V0
+
+## Turn off write-behind (write-behind clubs writes together)
+TEST $CLI volume set $V0 performance.write-behind off
+
+## Start the volume
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Mount the volume
+TEST $GFS --volfile-server=$H0 --volfile-id=$V0 $M0;
+
+## Build stub C source
+build_tester $STUB_SOURCE -o $STUB_EXEC -I$(dirname $0)/../../xlators/features/bit-rot/src/stub
+TEST [ -e $STUB_EXEC ]
+
+## create & check version
+fname="$M0/filezero"
+$PYTHON -c "import os,stat; os.mknod('${fname}', stat.S_IFREG | stat.S_IRUSR | stat.S_IWUSR | stat.S_IROTH | stat.S_IRGRP)"
+
+backpath=$(get_backend_paths $fname)
+
+TEST $STUB_EXEC $fname $(dirname $backpath)
+
+rm -f $fname;
+
+##cleanups..
+rm -f $STUB_EXEC
+
+cleanup;