Yes it works. For example in this RFC patch, generic/075 could be
skipped once 'bigalloc' is detected for ext4.
I could fix all related test cases in this way, if it is acceptable to
the community.
Signed-off-by: Jeffle Xu <jefflexu@xxxxxxxxxxxxxxxxx>
---
common/rc | 20 ++++++++++++++++++++
tests/generic/075 | 3 +++
2 files changed, 23 insertions(+)
diff --git a/common/rc b/common/rc
index f58a542..92245e0 100644
--- a/common/rc
+++ b/common/rc
@@ -4041,6 +4041,23 @@ _sysfs_dev()
min=$(echo "ibase=16; $min" | bc)
echo /sys/dev/block/$maj:$min
}
+
+_ext4_get_file_block_size()
+{
+ local path="$1"
+ path="$(readlink -m "$path")"
+ local dev=`$DF_PROG $dir | tail -1 | $AWK_PROG '{print $1}'`
+
+ # The alloc unit size equals block size for ext4 without 'bigalloc'.
+ if ! (tune2fs -l $dev | grep -q 'Cluster size'); then
+ _get_block_size "$path"
+ return
+ fi
+
+ # Otherwise, call tune2fs acquiring cluster size.
+ tune2fs -l $dev | sed -n -e 's/^.*Cluster size:\s*\([0-9]*\).*$/\1/p'
+
+}
# Get the minimum block size of a file. Usually this is the
# minimum fs block size, but some filesystems (ocfs2) do block
@@ -4059,6 +4076,9 @@ _get_file_block_size()
"xfs")
_xfs_get_file_block_size $1
;;
+ "ext4")
+ _ext4_get_file_block_size $1
+ ;;
*)
_get_block_size $1
;;
diff --git a/tests/generic/075 b/tests/generic/075
index 7467bb7..d269a7c 100755
--- a/tests/generic/075
+++ b/tests/generic/075
@@ -109,6 +109,9 @@ _process_args()
_supported_fs generic
_require_test
+blksz=$(_get_block_size $TEST_DIR)
+_require_congruent_file_oplen $TEST_DIR $blksz
+
size10=`expr 10 \* 1024 \* 1024` # 10 megabytes
filelen=$size10
numops1=1000
--
1.8.3.1
