From: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Date: Fri, 9 Jun 2017 14:20:19 +0000 (+0200)
Subject: Grow: don't allow to enable PPL when reshape is in progress
X-Git-Tag: mdadm-4.1-rc1~112
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=922a58292fafa4efcfcd44fbc46b0665681c955a;p=thirdparty%2Fmdadm.git

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>
---

diff --git a/Grow.c b/Grow.c
index f7325cbd..b1cb3069 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;