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| author | yangerkun <yangerkun@huawei.com> | 2020-06-19 23:12:42 +0200 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2020-07-20 17:17:41 +0200 |
| commit | 0c248ea27fc88cf8a3035ba0ed75b210be9abf80 (patch) | |
| tree | 71b4b586f35944e129f8db51e660b0ff922bf48c /Documentation/admin-guide | |
| parent | dm dust: report some message results directly back to user (diff) | |
| download | linux-0c248ea27fc88cf8a3035ba0ed75b210be9abf80.tar.xz linux-0c248ea27fc88cf8a3035ba0ed75b210be9abf80.zip | |
dm dust: add interface to list all badblocks
This interface may help anyone who want to know all badblocks without
querying for each block.
[Bryan: DMEMIT message if no blocks are in the bad block list.]
Signed-off-by: yangerkun <yangerkun@huawei.com>
Signed-off-by: Bryan Gurney <bgurney@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/device-mapper/dm-dust.rst | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/admin-guide/device-mapper/dm-dust.rst b/Documentation/admin-guide/device-mapper/dm-dust.rst index cf8079e368de..e35ec8cd2f88 100644 --- a/Documentation/admin-guide/device-mapper/dm-dust.rst +++ b/Documentation/admin-guide/device-mapper/dm-dust.rst @@ -206,6 +206,22 @@ appear:: dust_clear_badblocks: 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 + +If there are no bad blocks in the bad block list, the command will +execute with no output:: + + $ sudo dmsetup message dust1 0 listbadblocks + Message commands list --------------------- @@ -224,6 +240,7 @@ Single argument message commands:: countbadblocks clearbadblocks + listbadblocks disable enable quiet |