kernel/linux.git/include/linux/ceph/osd_client.h, branch linux-5.8.y

libceph: support for alloc hint flags

2020-06-01T21:32:35+00:00

Allow indicating future I/O pattern via flags. This is supported since Kraken (and bluestore persists flags together with expected_object_size and expected_write_size). Signed-off-by: Ilya Dryomov Reviewed-by: Jason Dillaman

libceph: support for balanced and localized reads

2020-06-01T11:22:53+00:00

OSD-side issues with reads from replica have been resolved in Octopus. Reading from replica should be safe wrt. unstable or uncommitted state now, so add support for balanced and localized reads. There are two cases when a read from replica can't be served: - OSD may silently drop the request, expecting the client to notice that the acting set has changed and resend via the usual means (handled with t->used_replica) - OSD may return EAGAIN, expecting the client to resend to the primary, ignoring replica read flags (see handle_reply()) Signed-off-by: Ilya Dryomov Reviewed-by: Jeff Layton

ceph: add read/write latency metric support

2020-06-01T11:22:51+00:00

Calculate the latency for OSD read requests. Add a new r_end_stamp field to struct ceph_osd_request that will hold the time of that the reply was received. Use that to calculate the RTT for each call, and divide the sum of those by number of calls to get averate RTT. Keep a tally of RTT for OSD writes and number of calls to track average latency of OSD writes. URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

ceph: move ceph_osdc_{read,write}pages to ceph.ko

2020-03-30T10:42:40+00:00

Since these helpers are only used by ceph.ko, move them there and rename them with _sync_ qualifiers. Signed-off-by: Xiubo Li Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

ceph: use copy-from2 op in copy_file_range

2020-01-27T15:53:40+00:00

Instead of using the copy-from operation, switch copy_file_range to the new copy-from2 operation, which allows to send the truncate_seq and truncate_size parameters. If an OSD does not support the copy-from2 operation it will return -EOPNOTSUPP. In that case, the kernel client will stop trying to do remote object copies for this fs client and will always use the generic VFS copy_file_range. Signed-off-by: Luis Henriques Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

libceph: add function that clears osd client's abort_err

2019-09-16T10:06:23+00:00

Signed-off-by: "Yan, Zheng" Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

libceph: add function that reset client's entity addr

2019-09-16T10:06:23+00:00

This function also re-open connections to OSD/MON, and re-send in-flight OSD requests after re-opening connections to OSD. Signed-off-by: "Yan, Zheng" Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

libceph: export osd_req_op_data() macro

2019-07-08T12:01:45+00:00

We already have one exported wrapper around it for extent.osd_data and rbd_object_map_update_finish() needs another one for cls.request_data. Signed-off-by: Ilya Dryomov Reviewed-by: Dongsheng Yang Reviewed-by: Jeff Layton

libceph: change ceph_osdc_call() to take page vector for response

2019-07-08T12:01:45+00:00

This will be used for loading object map. rbd_obj_read_sync() isn't suitable because object map must be accessed through class methods. Signed-off-by: Ilya Dryomov Reviewed-by: Dongsheng Yang Reviewed-by: Jeff Layton

libceph: rename r_unsafe_item to r_private_item

2019-07-08T12:01:44+00:00

This list item remained from when we had safe and unsafe replies (commit vs ack). It has since become a private list item for use by clients. Signed-off-by: Ilya Dryomov