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 f7325cbd6a050b1ab80ec00612d98289fb1535f2..b1cb3069a3145840a901726e6f344a66236f271c 100644 (file)
--- 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;