File 0093-Grow-don-t-allow-to-enable-PPL-when-reshape-is-in-pr.patch of Package mdadm.8578

From 922a58292fafa4efcfcd44fbc46b0665681c955a Mon Sep 17 00:00:00 2001
From: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Date: Fri, 9 Jun 2017 16:20:19 +0200
Subject: [PATCH] Grow: don't allow to enable PPL when reshape is in progress

Don't allow to enable PPL consistency policy when reshape is in progress.
Current PPL implementation doesn't work when reshape is taking place.

Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
---
 Grow.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Grow.c b/Grow.c
index f7325cb..b1cb306 100644
--- a/Grow.c
+++ b/Grow.c
@@ -530,6 +530,7 @@ int Grow_consistency_policy(char *devname, int fd, struct context *c, struct sha
 	char *subarray = NULL;
 	int ret = 0;
 	char container_dev[PATH_MAX];
+	char buf[20];
 
 	if (s->consistency_policy != CONSISTENCY_POLICY_RESYNC &&
 	    s->consistency_policy != CONSISTENCY_POLICY_PPL) {
@@ -577,6 +578,17 @@ int Grow_consistency_policy(char *devname, int fd, struct context *c, struct sha
 		goto free_info;
 	}
 
+	if (s->consistency_policy == CONSISTENCY_POLICY_PPL) {
+		if (sysfs_get_str(sra, NULL, "sync_action", buf, 20) <= 0) {
+			ret = 1;
+			goto free_info;
+		} else if (strcmp(buf, "reshape\n") == 0) {
+			pr_err("PPL cannot be enabled when reshape is in progress\n");
+			ret = 1;
+			goto free_info;
+		}
+	}
+
 	if (subarray) {
 		char *update;
 
-- 
2.12.0