common: extract rt extent size for _get_file_block_size

[xfstests-dev.git] / common / xfs

diff --git a/common/xfs b/common/xfs
index 79dab0583b40104e3bc95641d23ddfbf39530268..3f5c14baec363783b02492f19d4a771c84118247 100644 (file)
--- a/common/xfs
+++ b/common/xfs
@@ -174,6 +174,26 @@ _scratch_mkfs_xfs()
        return $mkfs_status
 }
 
+# Get the size of an allocation unit of a file.  Normally this is just the
+# block size of the file, but for realtime files, this is the realtime extent
+# size.
+_xfs_get_file_block_size()
+{
+       local path="$1"
+
+       if ! ($XFS_IO_PROG -c "stat -v" "$path" 2>&1 | egrep -q '(rt-inherit|realtime)'); then
+               _get_block_size "$path"
+               return
+       fi
+
+       # Otherwise, call xfs_info until we find a mount point or the root.
+       path="$(readlink -m "$path")"
+       while ! $XFS_INFO_PROG "$path" &>/dev/null && [ "$path" != "/" ]; do
+               path="$(dirname "$path")"
+       done
+       $XFS_INFO_PROG "$path" | grep realtime | sed -e 's/^.*extsz=\([0-9]*\).*$/\1/g'
+}
+
 # xfs_check script is planned to be deprecated. But, we want to
 # be able to invoke "xfs_check" behavior in xfstests in order to
 # maintain the current verification levels.