btrfs-progs: docs: note when subvolume cannot be deleted

Signed-off-by: David Sterba <dsterba@suse.com>
2020-07-14 15:04:05 +02:00 · 2020-07-14 15:04:05 +02:00 · ffd3b4cda2
parent 43f3ce5dcc
commit ffd3b4cda2
1 changed files with 5 additions and 0 deletions
--- a/Documentation/btrfs-subvolume.asciidoc
+++ b/Documentation/btrfs-subvolume.asciidoc
@ -78,6 +78,11 @@ performance reasons.  As a consequence, the subvolume may appear again after a
 crash.  Use one of the '--commit' options to wait until the operation is
 safely stored on the device.
 +
+The default subvolume (see *btrfs subvolume set-default*) cannot be deleted and
+returns error (EPERM) and this is logged to the system log. A subvolume that's
+currently involved in send (see *btrfs send*) also cannot be deleted until the
+send is finished. This is also logged in the system log.
+
 `Options`
 +
 -c|--commit-after::::