[V3,13/19] Filter fiemap output by FS block size

Commit Message

Chandan Rajendra Sept. 12, 2018, 6:26 a.m. UTC

When testing FS instances of block size other than 4k, the output of
fiemap command will not match those in *.out files. This commit adds
an optional "block size" argument to _filter_fiemap() which prints
fiemap output in units of block size.

Signed-off-by: Chandan Rajendra <[e-mail]>
---
 common/punch | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

Patch

diff --git a/common/punch b/common/punch
index 8088b01..0fc7729 100644
--- a/common/punch
+++ b/common/punch
@@ -165,7 +165,11 @@  _test_punch() {
 
 _coalesce_extents()
 {
-	awk -F: '
+	block_size=$1
+
+	[[ -z $block_size ]] && block_size=512
+
+	awk -v block_size="$block_size" -F: '
 	{
 		range = $2;
 		type = $3;
@@ -176,19 +180,24 @@  _coalesce_extents()
 
 		if (type != prev_type) {
 			if (prev_type != "")
-				printf("%u]:%s\n", low - 1, prev_type);
-			printf("%u: [%u..", out_count++, low);
+				printf("%u]:%s\n", (low * 512 / block_size) - 1,
+					prev_type);
+			printf("%u: [%u..", out_count++,
+				(low * 512) / block_size);
 			prev_type = type;
 		}
 	}
 	END {
 		if (prev_type != "")
-			printf("%u]:%s\n", high, prev_type);
+			printf("%u]:%s\n", ((high + 1) * 512 / block_size) - 1,
+				prev_type);
 	}'
 }
 
 _filter_fiemap()
 {
+	block_size=$1
+
 	$AWK_PROG '
 		$3 ~ /hole/ {
 			print $1, $2, $3;
@@ -201,7 +210,7 @@  _filter_fiemap()
 		$5 ~ /0x[[:xdigit:]]+/ {
 			print $1, $2, "data";
 		}' |
-	_coalesce_extents
+	_coalesce_extents $block_size
 }
 
 _filter_fiemap_flags()