From 7375b853bc3bf4d12c12cf3ed1f673ae0d987697 Mon Sep 17 00:00:00 2001 From: Nikolay Borisov Date: Tue, 9 Oct 2018 11:31:31 +0300 Subject: [PATCH] dm flakey: Document "error_writes" feature Commit 9d6675f18f54 ("dm flakey: introduce "error_writes" feature") added the ability to dm flakey to error out writes in contrast to silently dropping it with 'drop_writes'. Unfortunately this feature is not currently documented and one has to be either familiar with the source code of dm flakey or check out xfstests sources to know of this parameter. So document it. Signed-off-by: Nikolay Borisov Signed-off-by: Jonathan Corbet --- Documentation/device-mapper/dm-flakey.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/device-mapper/dm-flakey.txt b/Documentation/device-mapper/dm-flakey.txt index c43030718cef4..9f0e247d08773 100644 --- a/Documentation/device-mapper/dm-flakey.txt +++ b/Documentation/device-mapper/dm-flakey.txt @@ -33,6 +33,10 @@ Optional feature parameters: All write I/O is silently ignored. Read I/O is handled correctly. + error_writes: + All write I/O is failed with an error signalled. + Read I/O is handled correctly. + corrupt_bio_byte : During , replace of the data of each matching bio with . -- 2.39.5