From 9ba09767dd764e2b332a272465405d96a38f5108 Mon Sep 17 00:00:00 2001
From: Anand Jain <anand.jain@oracle.com>
Date: Tue, 5 Dec 2017 19:36:32 +0800
Subject: btrfs/124: add balance --full-balance option

btrfs balance needs --full-balance option since 4.6, so check the
version and then use it.

As this may be useful for other btrfs tests as well, so this patch
also adds _run_btrfs_balance_start() to the common/btrfs file.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
---
 common/btrfs | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'common/btrfs')

diff --git a/common/btrfs b/common/btrfs
index c09206c6..79c687f7 100644
--- a/common/btrfs
+++ b/common/btrfs
@@ -356,3 +356,14 @@ _btrfs_compression_algos()
 		echo "${feature#/sys/fs/btrfs/features/compress_}"
 	done
 }
+
+# run btrfs balance start with required --full-balance if available.
+_run_btrfs_balance_start()
+{
+	local bal_opt=""
+
+	$BTRFS_UTIL_PROG balance start --help | grep -q "full-balance"
+	(( $? == 0 )) && bal_opt="--full-balance"
+
+	run_check $BTRFS_UTIL_PROG balance start $bal_opt $*
+}
-- 
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