test out attr2 with different number of extents and number

of EAs - with both sizes shrinking and enlarging and changing
formats. Need to fix up the output before setting live.
Merge of master-melb:xfs-cmds:27208a by kenmcd.

  test out attr2 with different number of extents and number
  of EAs - with both sizes shrinking and enlarging and changing
  formats. Need to fix up the output before setting live.

136

@@ -0,0 +1,174 @@
+#! /bin/sh
+# FS QA Test No. 135
+#
+# Test the attr2 code
+# Let's look, xfs_db, at the inode and its literal area for the
+# extents and the attributes 
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
+#-----------------------------------------------------------------------
+#
+# creator
+owner=tes@puffy.melbourne.sgi.com
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+    cd /
+    rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+# real QA test starts here
+
+_notrun "Need to fix up filtering before checkin" 
+
+# Modify as appropriate.
+_supported_fs xfs
+_supported_os IRIX Linux
+_require_scratch
+
+export MKFS_OPTIONS="-i size=512,attr=2"
+_scratch_mkfs_xfs
+_scratch_mount
+
+file=$SCRATCH_MNT/file
+touch $file
+inum=`ls -i $file | awk '{print $1}'`
+echo "inum=$inum"
+
+add_eas()
+{
+    start=$1
+    end=$2
+    echo ""; echo "** add $start..$end EAs **"
+    i=$start
+    while [ $i -le $end ]; do 
+	attr -s name.$i -V value $file >/dev/null
+	i=`expr $i + 1`
+    done
+}
+
+rm_eas()
+{
+    start=$1
+    end=$2
+    echo ""; echo "** rm $start..$end EAs **"
+    i=$start
+    while [ $i -le $end ]; do 
+	attr -r name.$i $file >/dev/null
+	i=`expr $i + 1`
+    done
+}
+
+do_extents()
+{
+    num=$1
+    echo ""; echo "** $num extents **"
+    src/makeextents -v -p -w -n $num $file
+}
+
+_print_inode()
+{
+    #sync
+    #sleep 2
+    umount $SCRATCH_MNT
+    xfs_db -r -c "inode $inum" -c "print" $SCRATCH_DEV |\
+    awk '
+	/nextents/ { print; next }
+	/naextents/ { print; next }
+	/u\./ { print; next }
+	/a\./ { print; next }
+	/forkoff/ { printf("core.forkoff = %d (%d bytes)\n", $3, $3*8); next }
+	/format/ { print; next }
+	/size/ { print; next }
+    '
+    _scratch_mount
+}
+
+# main
+
+_print_inode
+
+add_eas 1 1
+_print_inode
+
+add_eas 2 2
+_print_inode
+
+add_eas 3 4
+_print_inode
+
+add_eas 5 8
+_print_inode
+
+add_eas 9 16
+_print_inode
+
+add_eas 17 20
+_print_inode
+
+add_eas 21 21
+_print_inode
+
+add_eas 22 22
+_print_inode
+
+add_eas 23 23
+_print_inode
+
+add_eas 24 24
+_print_inode
+
+add_eas 25 25
+_print_inode
+
+add_eas 26 30
+_print_inode
+
+add_eas 31 35
+_print_inode
+
+rm_eas 1 34
+_print_inode
+
+# now do the extents
+
+#build up
+j=1
+while [ $j -le 30 ]; do
+    do_extents $j
+    _print_inode
+    j=`expr $j + 2`
+done
+
+#scale down
+j=30
+while [ $j -ge 1 ]; do
+    do_extents $j
+    _print_inode
+    j=`expr $j - 2`
+done
+
+#build up
+j=1
+while [ $j -le 30 ]; do
+    do_extents $j
+    _print_inode
+    j=`expr $j + 2`
+done
+
+# success, all done
+status=0
+exit

group

@@ -215,3 +215,4 @@ pattern         ajones@sgi.com
 133 rw
 134 quota auto
 135 metadata auto
+136 attr2 

src/makeextents.c

@@ -24,6 +24,7 @@
 
 char *progname;
 __uint64_t num_holes = 1000;
+__uint64_t curr_holes;
 int verbose_opt = 0;
 char *filename;
 int status_num = 100;
@@ -32,6 +33,10 @@ int preserve;
 unsigned int blocksize;
 __uint64_t fileoffset;
 
+#define JUMP_SIZE (128 * 1024)
+#define NUMHOLES_TO_SIZE(i) (i * JUMP_SIZE)
+#define SIZE_TO_NUMHOLES(s) (s / JUMP_SIZE)
+
 void
 usage(void)
 {
@@ -50,7 +55,7 @@ main(int argc, char *argv[])
 	__uint64_t offset;
 	int blocksize = 512;
 	unsigned char *buffer = NULL;
-
+	struct stat stat;
 
 	progname = argv[0];
 
@@ -101,9 +106,35 @@ main(int argc, char *argv[])
 		return 1;
 	}
 
-	for (i = 0; i < num_holes; i++) {
+	if (fstat(fd, &stat) < 0) {
+		perror("stat");
+		return 1;
+	}
+	if (preserve) {
+		curr_holes = SIZE_TO_NUMHOLES(stat.st_size);
+		if (num_holes < curr_holes) {
+			/* we need to truncate back */
+			if (ftruncate(fd, NUMHOLES_TO_SIZE(num_holes)) < 0) {
+				perror("ftruncate");
+				return 1;
+			}
+			if (verbose_opt) {
+				printf("truncating back to %lu\n", NUMHOLES_TO_SIZE(num_holes));
+			}
+			return 0;
+		}
+	}
+	else {
+		curr_holes = 0;
+	}
+	if (curr_holes != 0 && verbose_opt) {
+		printf("creating %lu more holes\n", num_holes - curr_holes);
+	}
+		
+	/* create holes by seeking and writing */
+	for (i = curr_holes; i < num_holes; i++) {
 
-		offset = i * 128 * 1024 + fileoffset;
+		offset = NUMHOLES_TO_SIZE(i) + fileoffset;
 
 		if (lseek64(fd, offset, SEEK_SET) < 0) {
 			perror("lseek");
@@ -116,7 +147,7 @@ main(int argc, char *argv[])
 		}
 
 		if (verbose_opt && ((i+1) % status_num == 0)) {
-			printf("seeked and wrote %llu times\n", i+1);
+			printf("seeked and wrote %lu times\n", i+1);
 		}
 	}