Set SUBSYSTEM to the default, so we get decent logs from buffalo

again.

Increase OSTSIZE to 50MB, so replay-ost-single.sh doesn't fill the
filesystem.

lustre/tests/cfg/local.sh

@@ -16,13 +16,13 @@ MOUNT2=${MOUNT2:-"/mnt/lustre2"}
 DIR=${DIR:-$MOUNT}
 DIR2=${DIR2:-$MOUNT1}
 PTLDEBUG=${PTLDEBUG:-0x3f0400}
-SUBSYSTEM=${SUBSYSTEM:-0}
+SUBSYSTEM=${SUBSYSTEM:- 0xffb7e3ff}
 PDSH=${PDSH:-no_dsh}
 
 MDSDEV=${MDSDEV:-$ROOT/tmp/mds-`hostname`}
 MDSSIZE=${MDSSIZE:-10000}
 OSTDEV=${OSTDEV:-$ROOT/tmp/ost-`hostname`}
-OSTSIZE=${OSTSIZE:-10000}
+OSTSIZE=${OSTSIZE:-50000}
 FSTYPE=${FSTYPE:-ext3}
 TIMEOUT=${TIMEOUT:-10}
 UPCALL=${UPCALL:-$PWD/replay-single-upcall.sh}