File 0050-Grow-don-t-allow-to-enable-PPL-when-reshape-is-in-pr.patch of Package mdadm.7989

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
Git-commit: 922a58292fafa4efcfcd44fbc46b0665681c955a
Patch-mainline: mdadm-4.0+
References: bsc#1069165, bsc#1069167, bsc#1068030

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>
Signed-off-by: Coly Li <colyli@suse.de>

---
 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
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