From 03fcfd3f5a91131d6af645412ce69502bedaeb06 Mon Sep 17 00:00:00 2001
From: adilger <adilger>
Date: Fri, 29 Mar 2002 22:20:34 +0000
Subject: [PATCH] Add new simple test script "runtests" which automates a bunch
 of the basic tests which I do before committing stuff to CVS (copy some
 files, check they are OK, shutdown+restart, check files again, etc).

Add support in "new_fs" for using pre-built filesystems for testing (this
is considerably faster than building a new fs each time on loopback).
---
 lustre/tests/common.sh | 63 +++++++++++++++++++++++++++++++++++++++-----------
 lustre/tests/runtests  | 48 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 98 insertions(+), 13 deletions(-)
 create mode 100755 lustre/tests/runtests

diff --git a/lustre/tests/common.sh b/lustre/tests/common.sh
index d1a2c0d..51604eb 100644
--- a/lustre/tests/common.sh
+++ b/lustre/tests/common.sh
@@ -21,6 +21,8 @@ else
   fi
 fi
 
+# Return the next unused loop device on stdout and in the $LOOPDEV
+# environment variable.
 next_loop_dev() {
 	NEXT=
 	while [ -b ${LOOP}${LOOPNUM} ]; do
@@ -31,23 +33,58 @@ next_loop_dev() {
 	done
 }
 
-list_mods() {
-    $DEBCTL modules > $R/tmp/ogdb
-    echo "The GDB module script is in /tmp/ogdb.  Press enter to continue"
-    read
-}
-
+# Create a new filesystem.  If we are using a loopback device, we check
+# for existing "template" filesystems instead of creating a new one,
+# because it is _much_ faster to gunzip the empty filesystem instead of
+# creating a new one from scratch.  Conversely, if we are creating a
+# filesystem on a device we use mkfs, because that only writes sparsely
+# to the device.  The empty filesystems are also highly compressed (1000:1)
+# so they don't take too much space.
 new_fs () {
-    dd if=/dev/zero of=$2 bs=1k count=$3 1>&2 || exit -1
-    mkfs.$1 -b 4096 -F $2 1>&2 || exit -1
-    LOOPDEV=`next_loop_dev`
-    losetup ${LOOPDEV} $2 1>&2 || exit -1
+ 	EFILE="$1_$3.gz"
+	MKFS="mkfs.$1"
+	MKFSOPT="-b 4096"
+
+	[ $# -ne 3 ] && echo "usage: $0 <fstype> <file> <size>" 1>&2 && exit -1
+
+	[ "$1" = "ext3" ] && MKFS="mkfs.ext2 -j"
+
+	if [ -b "$2" ]; then
+		$MKFS $MKFSOPT $2 || exit -1
+		LOOPDEV=$2	# Not really a loop device
+	else
+		if [ -f "$EFILE" ]; then
+			echo "using existing filesystem $EFILE for $2"
+			zcat "$EFILE" > $2 || exit -1
+			sync
+		else
+			echo "creating new filesystem on $2"
+			dd if=/dev/zero of=$2 bs=1k count=$3 1>&2 || exit -1
+			$MKFS $MKFSOPT -F $2 1>&2 || exit -1
+		fi
+		LOOPDEV=`next_loop_dev`
+		losetup ${LOOPDEV} $2 1>&2 || exit -1
+	fi
 }
 
+# Set up to use an existing filesystem.  We take the same parameters as
+# new_fs, even though we only use the <file> parameter, to make it easy
+# to convert between new_fs and old_fs in testing scripts.
 old_fs () {
-    [ -e $2 ] || exit -1
-    LOOPDEV=`next_loop_dev`
-    losetup ${LOOPDEV} $2 1>&2 || exit -1
+	[ -e $2 ] || exit -1
+
+	if [ -b "$2" ]; then
+		LOOPDEV=$2	# Not really a loop device
+	else
+		LOOPDEV=`next_loop_dev`
+		losetup ${LOOPDEV} $2 1>&2 || exit -1
+	fi
+}
+
+list_mods() {
+	$DEBCTL modules > $R/tmp/ogdb
+	echo "The GDB module script is in /tmp/ogdb.  Press enter to continue"
+	read
 }
 
 setup() {
diff --git a/lustre/tests/runtests b/lustre/tests/runtests
new file mode 100755
index 0000000..239aa50
--- /dev/null
+++ b/lustre/tests/runtests
@@ -0,0 +1,48 @@
+#!/bin/sh
+#
+# Script which does some basic tests to ensure we haven't regressed.
+# Probably a good idea to run this before doing any checkins.
+# In the future this can become more fancy, but it's OK for now.
+
+RUNDIR=`dirname $0`
+
+PATH=$PATH:$RUNDIR
+
+ERROR=
+
+llmount.sh || exit 1
+
+# let's start slowly here...
+touch /mnt/obd || exit 2
+cp /etc/hosts /mnt/obd || exit 3
+diff -u /etc/hosts /mnt/obd/hosts || exit 4
+
+# ok, that hopefully worked, so let's do a little more
+FILES=`find /etc -type f`
+echo "copying files from /etc to /mnt/obd"
+tar cf - $FILES | tar xf - -C /mnt/obd || exit 10
+
+echo "comparing newly copied files"
+for f in $FILES; do
+	diff -q $f /mnt/obd/$f || ERROR=11
+done
+
+[ "$ERROR" ] && exit $ERROR
+
+llmountcleanup.sh
+
+llrmount.sh || exit 20
+echo "comparing previously copied files"
+diff -u /etc/hosts /mnt/obd/hosts || exit 21
+
+for f in $FILES; do
+	diff -q $f /mnt/obd/$f || ERROR=22
+done
+
+[ "$ERROR" ] && exit $ERROR
+
+rm /mnt/obd/hosts || exit 23
+
+rm -r /mnt/obd/etc || exit 24
+
+llmountcleanup.sh
-- 
1.8.3.1