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[2/2] dm dust: introduce listbadblocks in the rst

Message ID 20200608084513.115671-3-yangerkun@huawei.com (mailing list archive)
State Changes Requested, archived
Delegated to: Mike Snitzer
Headers show
Series introduce interface to list all badblocks | expand

Commit Message

yangerkun June 8, 2020, 8:45 a.m. UTC 
Since we support the listbadblocks command, introduce the detail in the
doc.

Signed-off-by: yangerkun <yangerkun@huawei.com>
Reviewed-by: Bryan Gurney <bgurney@redhat.com>
---
 .../admin-guide/device-mapper/dm-dust.rst      | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/admin-guide/device-mapper/dm-dust.rst b/Documentation/admin-guide/device-mapper/dm-dust.rst
index b6e7e7ead831..2c51a4acb8be 100644
--- a/Documentation/admin-guide/device-mapper/dm-dust.rst
+++ b/Documentation/admin-guide/device-mapper/dm-dust.rst
@@ -205,6 +205,23 @@  appear::
 
         kernel: device-mapper: dust: clearbadblocks: no badblocks found
 
+Listing the bad block list
+--------------------------
+
+To list all bad blocks in the bad block list, run the following message
+command::
+
+        $ sudo dmsetup message dust1 0 listbadblocks
+
+The following message will appear, listing one bad block number per
+line (using an example device with blocks 1 and 2 in the bad block
+list)::
+
+        device-mapper: dust: dust_list_badblocks: badblocks list below:
+        device-mapper: dust: bad block: 1
+        device-mapper: dust: bad block: 2
+        device-mapper: dust: dust_list_badblocks: badblocks list end.
+
 Message commands list
 ---------------------
 
@@ -223,6 +240,7 @@  Single argument message commands::
 
         countbadblocks
         clearbadblocks
+        listbadblocks
         disable
         enable
         quiet