diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/device-mapper/dm-crypt.rst | 11 | ||||
| -rw-r--r-- | Documentation/admin-guide/device-mapper/vdo.rst | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/admin-guide/device-mapper/dm-crypt.rst b/Documentation/admin-guide/device-mapper/dm-crypt.rst index 41f5f57f00eb..e625830d335e 100644 --- a/Documentation/admin-guide/device-mapper/dm-crypt.rst +++ b/Documentation/admin-guide/device-mapper/dm-crypt.rst @@ -160,6 +160,17 @@ iv_large_sectors The <iv_offset> must be multiple of <sector_size> (in 512 bytes units) if this flag is specified. + +Module parameters:: +max_read_size +max_write_size + Maximum size of read or write requests. When a request larger than this size + is received, dm-crypt will split the request. The splitting improves + concurrency (the split requests could be encrypted in parallel by multiple + cores), but it also causes overhead. The user should tune these parameters to + fit the actual workload. + + Example scripts =============== LUKS (Linux Unified Key Setup) is now the preferred way to set up disk diff --git a/Documentation/admin-guide/device-mapper/vdo.rst b/Documentation/admin-guide/device-mapper/vdo.rst index 7e1ecafdf91e..c69ac186863a 100644 --- a/Documentation/admin-guide/device-mapper/vdo.rst +++ b/Documentation/admin-guide/device-mapper/vdo.rst @@ -241,6 +241,7 @@ Messages All vdo devices accept messages in the form: :: + dmsetup message <target-name> 0 <message-name> <message-parameters> The messages are: |