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| author | Sami Tolvanen <samitolvanen@google.com> | 2015-12-03 14:26:31 +0000 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2015-12-10 10:39:03 -0500 |
| commit | 0cc37c2df4fa0aa702f9662edce4b7ce12c86b7a (patch) | |
| tree | ce34d33da52e65c3907034f294af01f7dd96ad0b /Documentation/device-mapper | |
| parent | a739ff3f543afbb4a041c16cd0182c8e8d366e70 (diff) | |
dm verity: add ignore_zero_blocks feature
If ignore_zero_blocks is enabled dm-verity will return zeroes for blocks
matching a zero hash without validating the content.
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'Documentation/device-mapper')
| -rw-r--r-- | Documentation/device-mapper/verity.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/device-mapper/verity.txt b/Documentation/device-mapper/verity.txt index d602c801ff59..89fd8f9a259f 100644 --- a/Documentation/device-mapper/verity.txt +++ b/Documentation/device-mapper/verity.txt @@ -79,6 +79,11 @@ restart_on_corruption not compatible with ignore_corruption and requires user space support to avoid restart loops. +ignore_zero_blocks + Do not verify blocks that are expected to contain zeroes and always return + zeroes instead. This may be useful if the partition contains unused blocks + that are not guaranteed to contain zeroes. + use_fec_from_device <fec_dev> Use forward error correction (FEC) to recover from corruption if hash verification fails. Use encoding data from the specified device. This |