From: Zdenek Kabelac <zkabelac@redhat.com>
Date: Wed, 6 Apr 2016 08:29:05 +0000 (+0200)
Subject: suspend: fix suspend with noflush limitation
X-Git-Tag: v2_02_150~24
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=7c1937f8df1e843d00b9d5814c756234381ca0d1;p=lvm2.git

suspend: fix suspend with noflush limitation

Commit 844b00958492224c448b30f89ae5532bb6591fd2 tried to move
limit for usage of noflush to 'preload' however this was not
correctly processed.

Intead explicitly check for which types we do not want noflush
and also add debug message in this case.
---

diff --git a/lib/activate/activate.c b/lib/activate/activate.c
index a3b2379c6..7afb4397a 100644
--- a/lib/activate/activate.c
+++ b/lib/activate/activate.c
@@ -1933,6 +1933,16 @@ static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s,
 		}
 	}
 
+	/* Flush is ATM required for the tested cases
+	 * NOTE: Mirror repair requires noflush for proper repair!
+	 * TODO: Relax this limiting condition further */
+	if (!flush_required &&
+	    (lv_is_pvmove(lv) ||
+	     (!lv_is_mirror(lv) && !lv_is_thin_pool(lv) && !lv_is_thin_volume(lv)))) {
+		log_debug("Requiring flush for LV %s.", display_lvname(lv));
+		flush_required = 1;
+	}
+
 	if (!monitor_dev_for_events(cmd, lv, laopts, 0))
 		/* FIXME Consider aborting here */
 		stack;
diff --git a/lib/activate/dev_manager.c b/lib/activate/dev_manager.c
index 22331c3b7..994ba809d 100644
--- a/lib/activate/dev_manager.c
+++ b/lib/activate/dev_manager.c
@@ -3023,7 +3023,7 @@ static int _tree_action(struct dev_manager *dm, const struct logical_volume *lv,
 		break;
 	case SUSPEND:
 		dm_tree_skip_lockfs(root);
-		if (!dm->flush_required && !lv_is_pvmove(lv))
+		if (!dm->flush_required)
 			dm_tree_use_no_flush_suspend(root);
 		/* Fall through */
 	case SUSPEND_WITH_LOCKFS: