提交 · 5a237819aa4e0421a17966e9baf91b9caedaf61d · openeuler / Kernel

02 4月, 2018 27 次提交

I
rbd: switch to common striping framework · 5a237819
由 Ilya Dryomov 提交于 2月 06, 2018
```
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
```
5a237819

rbd: create+truncate for whole-object layered discards · 2bb1e56e

由 Ilya Dryomov 提交于 2月 06, 2018

A whole-object layered discard is implemented as a truncate rather
than a delete: a dummy object is needed to prevent the CoW machinery
from kicking in.  However, a truncate on a non-existent object is
a no-op.  If the object doesn't exist in HEAD, a discard request is
effectively ignored, which violates our "discard zeroes data" promise
and breaks REQ_OP_WRITE_ZEROES implementation.

A non-exclusive create on an existing object is also a no-op, so the
fix is to do a compound create+truncate instead.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

2bb1e56e

rbd: move to obj_req->img_extents · 86bd7998

由 Ilya Dryomov 提交于 2月 06, 2018

In preparation for rbd "fancy" striping, replace obj_req->img_offset
with obj_req->img_extents. A single starting offset isn't sufficient
because we want only one OSD request per object and will merge adjacent
object extents in ceph_file_to_extents(). The final object extent may
map into multiple different byte ranges in the image.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

86bd7998

rbd: incorporate ceph_object_extent · 43df3d35

由 Ilya Dryomov 提交于 2月 02, 2018

obj_req->object_no -> obj_req->ex.oe_objno
obj_req->offset -> obj_req->ex.oe_off
obj_req->length -> obj_req->ex.oe_len

... and use ex for linking object requests to image requests.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

43df3d35

I
libceph, ceph: move ceph_calc_file_object_mapping() to striper.c · 08c1ac50
由 Ilya Dryomov 提交于 2月 17, 2018
```
ceph_calc_file_object_mapping() has nothing to do with osdmaps.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
```
08c1ac50
I
libceph: striping framework implementation · ed0811d2
由 Ilya Dryomov 提交于 2月 02, 2018
```
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
```
ed0811d2

rbd: store data_type in img_req instead of obj_req · ecc633ca

由 Ilya Dryomov 提交于 2月 01, 2018

All object requests are associated with an image request now -- avoid
duplicating the same info in each object request.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

ecc633ca

rbd: remove obj_req->flags field · 0be2d60e

由 Ilya Dryomov 提交于 2月 01, 2018

There are no standalone (!IMG_DATA) object requests anymore.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

0be2d60e

I
rbd: remove old request completion code · 15961b44
由 Ilya Dryomov 提交于 2月 01, 2018
```
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
```
15961b44

rbd: new request completion code · 7114edac

由 Ilya Dryomov 提交于 2月 01, 2018

Do away with partial request completions and all the associated
complexity.  Individual object requests no longer need to be completed
in order -- when the last one becomes ready, we complete the entire
higher level request all at once.

This also wraps up the conversion to a state machine model and
eliminates the recursion described in commit 6d69bb53 ("rbd:
prevent kernel stack blow up on rbd map").
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

7114edac

rbd: update rbd_img_request_submit() signature · efbd1a11

由 Ilya Dryomov 提交于 1月 30, 2018

It should be void now.  Also, object requests are unlinked only in
image request destructor, which can't run before rbd_img_request_put(),
so no need for _safe.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

efbd1a11

rbd: add img_req->op_type field · 9bb0248d

由 Ilya Dryomov 提交于 1月 30, 2018

Store op_type in its own field instead of packing it into flags.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

9bb0248d

rbd: simplify rbd_osd_req_create() · a162b308

由 Ilya Dryomov 提交于 1月 30, 2018

No need to pass rbd_dev and op_type to rbd_osd_req_create(): there are
no standalone (!IMG_DATA) object requests anymore and osd_req->r_flags
can be set in rbd_osd_req_format_{read,write}().
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

a162b308

I
rbd: remove old request handling code · 51c3509e
由 Ilya Dryomov 提交于 1月 29, 2018
```
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
```
51c3509e

rbd: new request handling code · 3da691bf

由 Ilya Dryomov 提交于 1月 29, 2018

The notable changes are:

- instead of explicitly stat'ing the object to see if it exists before
  issuing the write, send the write optimistically along with the stat
  in a single OSD request
- zero copyup optimization
- all object requests are associated with an image request and have
  a valid ->img_request pointer; there are no standalone (!IMG_DATA)
  object requests anymore
- code is structured as a state machine (vs a bunch of callbacks with
  implicit state)
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>

3da691bf

libceph: handle zero-length data items · 45a267db

由 Ilya Dryomov 提交于 1月 22, 2018

rbd needs this for null copyups -- if copyup data is all zeroes, we
want to save some I/O and network bandwidth.  See rbd_obj_issue_copyup()
in the next commit.
Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
Reviewed-by: NAlex Elder <elder@linaro.org>

45a267db

rbd: move from raw pages to bvec data descriptors · 7e07efb1