Add subchapter about ACLs, and make even more clear what quotas are about

Document that use of a tmpdir is recommended when doing a 'suspend'
backup to a NFS share.

diff --git a/pct.adoc b/pct.adoc
index 82f257b69d27c090da20be43b060411682b8613c..11170826bc4975b9d1baa1ba7914f6e46dff111e 100644 (file)
--- a/pct.adoc
+++ b/pct.adoc
@@ -401,6 +401,8 @@ Similarly device mounts are not managed by the storage, but for these the
 Using quotas inside containers
 ------------------------------
 
 Using quotas inside containers
 ------------------------------
 

+Quotas allow to set limits inside a container for the amount of disk space
+that each user can use.

 This only works on ext4 image based storage types and currently does not work
 with unprivileged containers.
 
 This only works on ext4 image based storage types and currently does not work
 with unprivileged containers.
 


@@ -418,6 +420,12 @@ for every mountpoint by passing the mountpoint's path instead of just `/`.) Best
 see the documentation specific to the distributiont running inside the
 container.
 
 see the documentation specific to the distributiont running inside the
 container.
 

+Using ACLs inside containers
+----------------------------
+
+The standard Posix Access Control Lists are also available inside containers. 
+ACLs allow you to set more detailed file ownership than the traditional user/
+group/others model.

 
 Container Advantages
 --------------------
 
 Container Advantages
 --------------------

diff --git a/vzdump.adoc b/vzdump.adoc
index fc4246807b900fc5dd51aaa1ead6ab81b867a9a7..77f4638449946560932793d41f6aa0f3c872ae11 100644 (file)
--- a/vzdump.adoc
+++ b/vzdump.adoc
@@ -38,11 +38,17 @@ Stop the VM during backup. This results in a very long downtime.
 
 `suspend` mode::
 
 
 `suspend` mode::
 

-For containers, this mode uses rsync to copy the VM data to a temporary
-location (see option `--tmpdir`). Then the VM is suspended and a second
-rsync copies changed files. After that, the VM is started (resumed)
+For containers, this mode uses rsync to copy the container data to a temporary
+location (see option `--tmpdir`). Then the container is suspended and a second
+rsync copies changed files. After that, the container is started (resumed)

 again. This results in minimal downtime, but needs additional space
 again. This results in minimal downtime, but needs additional space

-to hold the VM copy.
+to hold the container copy.
+
+When the container is on a local filesystem and the target storage of the backup
+is an NFS server, you should set `--tmpdir` to reside on a local filesystem too,
+as this will result in a many fold performance improvement.
+Use of a local `tmpdir` is also required if you want to backup in `suspend`
+mode a local container using ACLs to an NFS server.

 
 For QemuServer, this mode will suspend the VM, start
 a live backup, and resume the VM.
 
 For QemuServer, this mode will suspend the VM, start
 a live backup, and resume the VM.