Since we support the listbadblocks command, introduce the detail in the
doc.
Signed-off-by: yangerkun <yangerkun@xxxxxxxxxx>
---
.../admin-guide/device-mapper/dm-dust.rst | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/Documentation/admin-guide/device-mapper/dm-dust.rst b/Documentation/admin-guide/device-mapper/dm-dust.rst
index 84149c08b68f..5c66a71e3442 100644
--- a/Documentation/admin-guide/device-mapper/dm-dust.rst
+++ b/Documentation/admin-guide/device-mapper/dm-dust.rst
@@ -205,6 +205,21 @@ If there were no bad blocks to clear, the following message will
appear::
no badblocks found
+Listing the bad block list
+--------------------------
+
+To list all bad blocks in the bad block list(using an example device
+with blocks 1 and 2 in the bad block list),run the following message
+command::
+
+ $ sudo dmsetup message dust1 0 listbadblocks
+ 1
+ 2
+
+No bad block exists, same message will get following report::
+
+ $ sudo dmsetup message dust1 0 listbadblocks
+ null
Message commands list
---------------------
@@ -224,6 +239,7 @@ Single argument message commands::
countbadblocks
clearbadblocks
+ listbadblocks
disable
enable
quiet
--
2.25.4
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