pct: add warning about FUSE

diff --git a/pct.adoc b/pct.adoc
index e9f399e3196a0bea7b9ad6c06df7a96cd281e7df..eaa36e7260f4750de5bb5d0f7b7741f7ed252fe2 100644 (file)
--- a/pct.adoc
+++ b/pct.adoc
@@ -399,6 +399,13 @@ user mapping, and cannot use ACLs from inside an unprivileged container.
 Similarly device mounts are not managed by the storage, but for these the
 `quota` and `acl` options will be honored.
 
 Similarly device mounts are not managed by the storage, but for these the
 `quota` and `acl` options will be honored.
 

+WARNING: Because of existing issues in the Linux kernel's freezer
+subsystem the usage of FUSE mounts inside a container is strongly
+advised against, as containers need to be frozen for suspend or
+snapshot mode backups. If FUSE mounts cannot be replaced by other
+mounting mechanisms or storage technologies, it is possible to
+establish the FUSE mount on the Proxmox host and use a bind
+mountpoint to make it accessible inside the container.

 
 Using quotas inside containers
 ------------------------------
 
 Using quotas inside containers
 ------------------------------