give a hint if old cgroup can't be moved

When cgroup can't be moved, it might be a hint container is already running. Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

give a hint if old cgroup can't be moved
f02adce2 · Frederic Crozat · Serge Hallyn · d696d21c · f02adce2
Commit f02adce2 authored Apr 27, 2012 by Frederic Crozat Committed by Serge Hallyn Feb 28, 2013
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cgroup.c src/lxc/cgroup.c +3 -0

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--- a/src/lxc/cgroup.c
+++ b/src/lxc/cgroup.c
@@ -560,6 +560,9 @@ static int lxc_one_cgroup_create(const char *name,
 	if (!access(cgname, F_OK) && rmdir(cgname)) {
 		if (try_to_move_cgname(cgparent, cgname)) {
 			SYSERROR("failed to remove previous cgroup '%s'", cgname);
+			ERROR("##");
+			ERROR("# The container might be already running!");
+			ERROR("##");
 			return -1;
 		}
 	}