From 28700a36232ba61fb6ac59466821546cb25aec69 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 10 May 2018 11:18:49 -0400 Subject: dm thin: update Documentation to clarify when "read_only" is valid Due to user confusion, clarify that it doesn't make sense to try to create a thin-pool with "read_only" mode enabled. Signed-off-by: Mike Snitzer --- Documentation/device-mapper/thin-provisioning.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/device-mapper/thin-provisioning.txt b/Documentation/device-mapper/thin-provisioning.txt index 4bcd4b7f79f9..3d01948ea061 100644 --- a/Documentation/device-mapper/thin-provisioning.txt +++ b/Documentation/device-mapper/thin-provisioning.txt @@ -264,7 +264,10 @@ i) Constructor data device, but just remove the mapping. read_only: Don't allow any changes to be made to the pool - metadata. + metadata. This mode is only available after the + thin-pool has been created and first used in full + read/write mode. It cannot be specified on initial + thin-pool creation. error_if_no_space: Error IOs, instead of queueing, if no space. -- cgit v1.2.3-59-g8ed1b