Test out pv#953263 by creating AGI unlinked lists for recovery and

looking in logprint for CLEAR_AGI_BUCKET transactions.
Merge of master-melb:xfs-cmds:26042a by kenmcd.

  Test for pv#953263.

121

@@ -0,0 +1,89 @@
+#! /bin/sh
+# FS QA Test No. 121
+#
+# To test log replay for the unlinked list.
+# So we create unlinked and still referenced inodes
+# and make sure that no clearing of the unlinked AGI buckets
+# are happening. 
+# See pv#953263.
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2006 Silicon Graphics, Inc.  All Rights Reserved.
+#-----------------------------------------------------------------------
+#
+# creator
+owner=tes@sgi.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+. ./common.log
+
+# real QA test starts here
+_supported_fs xfs
+_supported_os IRIX Linux
+
+rm -f $seq.full
+rm -f $tmp.log
+
+_require_scratch
+
+echo "mkfs"
+_scratch_mkfs_xfs >>$seq.full 2>&1 \
+    || _fail "mkfs scratch failed"
+
+echo "mount"
+_scratch_mount >>$seq.full 2>&1 \
+    || _fail "mount failed: $MOUNT_OPTIONS"
+
+# num_files must be greater than 64 (XFS_AGI_UNLINKED_BUCKETS)
+# so that there will be at least one linked list from one of
+# the 64 buckets, so that we can decode a di_next_unlinked field 
+num_files=200
+delay=5
+echo "open and unlink $num_files files"
+src/multi_open_unlink $SCRATCH_MNT/test_file $num_files $delay &
+
+# time to create and unlink all the files
+sleep 3
+
+echo "godown"
+src/godown -v -f $SCRATCH_MNT >> $seq.full
+
+# time for multi_open_unlink to exit out after its delay
+# so we have no references and can unmount
+sleep 3
+
+echo "unmount"
+umount $SCRATCH_MNT
+
+echo "logprint after going down..."
+_print_logstate
+
+echo "mount with replay"
+_scratch_mount $mnt >>$seq.full 2>&1 \
+    || _fail "mount failed: $mnt $MOUNT_OPTIONS"
+
+echo "godown"
+src/godown -v -f $SCRATCH_MNT >> $seq.full
+
+echo "unmount"
+umount $SCRATCH_MNT
+
+echo "logprint after going down..."
+_print_logstate
+
+echo "logprint to check for CLEAR_AGI_BUCKET..."
+xfs_logprint -t $SCRATCH_DEV | grep CLEAR
+
+# success, all done
+status=0
+exit

121.out

@@ -0,0 +1,14 @@
+QA output created by 121
+mkfs
+mount
+open and unlink 200 files
+godown
+unmount
+logprint after going down...
+dirty log
+mount with replay
+godown
+unmount
+logprint after going down...
+dirty log
+logprint to check for CLEAR_AGI_BUCKET...

group

@@ -196,4 +196,5 @@ aio		nathans@sgi.com
 117 attr auto
 118 quota
 119 log v2log
-120 auto
+120 auto
+121 log auto

src/Makefile

@@ -9,7 +9,8 @@ TARGETS = dirstress fill fill2 getpagesize holes lstat64 \
 	nametest permname randholes runas truncfile usemem \
 	mmapcat append_reader append_writer dirperf metaperf \
 	devzero feature alloc fault fstest t_access_root \
-	godown resvtest writemod makeextents itrash
+	godown resvtest writemod makeextents itrash \
+	multi_open_unlink
 
 LINUX_TARGETS = loggen xfsctl bstat t_mtab getdevicesize
 
@@ -69,6 +70,9 @@ resvtest: resvtest.o
 itrash:	itrash.o
 	$(LINKTEST)
 
+multi_open_unlink: multi_open_unlink.o
+	$(LINKTEST)
+
 #scaleread: scaleread.o $(LDLIBS)
 #	$(LINKTEST)
 

src/multi_open_unlink.c

@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2006 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+/*
+ * multi_open_unlink path_prefix num_files sleep_time
+ * e.g.  
+ *   $ multi_open_unlink file 100 60
+ *   Creates 100 files: file.1, file.2, ..., file.100
+ *   unlinks them all but doesn't close them all until after 60 seconds. 
+ */
+
+int
+main(int argc, char *argv[])
+{
+	char *given_path;
+	char path[PATH_MAX];
+	char *prog = argv[0];
+	int sleep_time;
+	int num_files;
+	int fd = -1;
+	int i;
+
+	if (argc != 4) {
+		fprintf(stderr, "Usage: %s path_prefix num_files sleep_time\n", prog);
+		return 1;
+	}
+
+	given_path = argv[1];
+	num_files = atoi(argv[2]);
+	sleep_time = atoi(argv[3]);
+
+        /* create and unlink a bunch of files */
+	for (i = 0; i < num_files; i++) {
+		sprintf(path, "%s.%d", given_path, i+1);
+
+		/* if file already exists then error out */
+		if (access(path, F_OK) == 0) {
+			fprintf(stderr, "%s: file \"%s\" already exists\n", prog, path);
+			return 1;
+		}
+
+		fd = open(path, O_RDWR|O_CREAT|O_EXCL);
+		if (fd == -1) {
+			fprintf(stderr, "%s: failed to create \"%s\": %s\n", prog, path, strerror(errno));
+			return 1;
+		}
+
+		if (unlink(path) == -1) {
+			fprintf(stderr, "%s: failed to unlink \"%s\": %s\n", prog, path, strerror(errno));
+			return 1;
+		}
+	}
+
+	sleep(sleep_time);
+
+	return 0;
+}