[PATCH v3 3/4] kdumpctl: update check_dump_fs_modified() to use "lsinitrd -f"

[Xunlei Pang]

We use faster "lsinitrd XXX -f usr/lib/dracut/build-parameter.txt"
instead of "lsinitrd XXX | grep "^Arguments:" | head -1", this can
save us around one second.

Signed-off-by: Xunlei Pang <xlpang(a)redhat.com&gt;
---
 kdumpctl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kdumpctl b/kdumpctl
index b24e164..b9d5fe6 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -539,7 +539,7 @@ check_dump_fs_modified()
 		_new_mntpoint="/kdumproot/$(get_mntpoint_from_target $_target)"
 	fi
 
-	_dracut_args=$(lsinitrd $TARGET_INITRD | grep "^Arguments:" | head -1)
+	_dracut_args=$(lsinitrd $TARGET_INITRD -f usr/lib/dracut/build-parameter.txt)
 	if [[ -z "$_dracut_args" ]];then
 		echo "Warning: No dracut arguments found in initrd"
 		return 0
-- 
1.8.3.1