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| author | Ilya Dryomov <idryomov@gmail.com> | 2016-08-12 16:40:02 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2016-08-24 23:49:16 +0200 |
| commit | ed95b21a4b0a71ef89306cdeb427d53cc9cb343f (patch) | |
| tree | 3a8ff6e713df797980ffc5df4411625a0f4a0f36 /drivers/block/rbd_types.h | |
| parent | 99d1694310df3ffef66902f5bc1a23e95a724aa3 (diff) | |
rbd: support for exclusive-lock feature
Add basic support for RBD_FEATURE_EXCLUSIVE_LOCK feature. Maintenance
operations (resize, snapshot create, etc) are offloaded to librbd via
returning -EOPNOTSUPP - librbd should request the lock and execute the
operation.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Tested-by: Mike Christie <mchristi@redhat.com>
Diffstat (limited to 'drivers/block/rbd_types.h')
| -rw-r--r-- | drivers/block/rbd_types.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/block/rbd_types.h b/drivers/block/rbd_types.h index 49d77cbcf8bd..94f367db27b0 100644 --- a/drivers/block/rbd_types.h +++ b/drivers/block/rbd_types.h @@ -28,6 +28,17 @@ #define RBD_DATA_PREFIX "rbd_data." #define RBD_ID_PREFIX "rbd_id." +#define RBD_LOCK_NAME "rbd_lock" +#define RBD_LOCK_TAG "internal" +#define RBD_LOCK_COOKIE_PREFIX "auto" + +enum rbd_notify_op { + RBD_NOTIFY_OP_ACQUIRED_LOCK = 0, + RBD_NOTIFY_OP_RELEASED_LOCK = 1, + RBD_NOTIFY_OP_REQUEST_LOCK = 2, + RBD_NOTIFY_OP_HEADER_UPDATE = 3, +}; + /* * For format version 1, rbd image 'foo' consists of objects * foo.rbd - image metadata |