| Age | Commit message (Expand) | Author | Files | Lines |
|---|---|---|---|---|
| Author | Files | Lines | class='oid'>d30291b985d1854565d7f2c82a4457869d5265e8 (patch)
|---|---|---|
| tree | 43b99c978c5e4ea321d72590dfeebd42c10de28e | |
| parent | 711da55d36a6f1eddcd340969be7223110d2f6b0 (diff) | |
libceph: variable-sized ceph_object_id
Currently ceph_object_id can hold object names of up to 100
(CEPH_MAX_OID_NAME_LEN) characters. This is enough for all use cases,
expect one - long rbd image names:
- a format 1 header is named "<imgname>.rbd"
- an object that points to a format 2 header is named "rbd_id.<imgname>"
We operate on these potentially long-named objects during rbd map, and,
for format 1 images, during header refresh. (A format 2 header name is
a small system-generated string.)
Lift this 100 character limit by making ceph_object_id be able to point
to an externally-allocated string. Apart from being able to work with
almost arbitrarily-long named objects, this allows us to reduce the
size of ceph_object_id from >100 bytes to 64 bytes.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>