linux-toradex.git/include/linux/ceph/osd_client.h, branch v4.11-rc6

libceph: osd_request_timeout option

2017-03-07T13:30:38+00:00

osd_request_timeout specifies how many seconds to wait for a response
from OSDs before returning -ETIMEDOUT from an OSD request.  0 (default)
means no limit.

osd_request_timeout is osdkeepalive-precise -- in-flight requests are
swept through every osdkeepalive seconds.  With ack vs commit behaviour
gone, abort_request() is really simple.

This is based on a patch from Artur Molchanov .

Tested-by: Artur Molchanov 
Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil

libceph: get rid of ack vs commit

2017-02-24T18:04:57+00:00

- CEPH_OSD_FLAG_ACK shouldn't be set anymore, so assert on it
- remove support for handling ack replies (OSDs will send ack replies
  only if clients request them)
- drop the "do lingering callbacks under osd->lock" logic from
  handle_reply() -- lreq->lock is sufficient in all three cases

Signed-off-by: Ilya Dryomov 
Reviewed-by: Jeff Layton 
Reviewed-by: Sage Weil

libceph: always signal completion when done

2016-12-14T21:39:08+00:00

r_safe_completion is currently, and has always been, signaled only if
on-disk ack was requested.  It's there for fsync and syncfs, which wait
for in-flight writes to flush - all data write requests set ONDISK.

However, the pool perm check code introduced in 4.2 sends a write
request with only ACK set.  An unfortunately timed syncfs can then hang
forever: r_safe_completion won't be signaled because only an unsafe
reply was requested.

We could patch ceph_osdc_sync() to skip !ONDISK write requests, but
that is somewhat incomplete and yet another special case.  Instead,
rename this completion to r_done_completion and always signal it when
the OSD client is done with the request, whether unsafe, safe, or
error.  This is a bit cleaner and helps with the cancellation code.

Reported-by: Yan, Zheng 
Signed-off-by: Ilya Dryomov

libceph: initialize last_linger_id with a large integer

2016-11-10T19:13:08+00:00

osdc->last_linger_id is a counter for lreq->linger_id, which is used
for watch cookies.  Starting with a large integer should ease the task
of telling apart kernel and userspace clients.

Signed-off-by: Ilya Dryomov

libceph: add ceph_osdc_call() single-page helper

2016-08-24T21:49:15+00:00

Add a convenience function to osd_client to send Ceph OSD
'class' ops. The interface assumes that the request and
reply data each consist of single pages.

Signed-off-by: Douglas Fuller 
Signed-off-by: Ilya Dryomov 
Reviewed-by: Mike Christie 
Reviewed-by: Alex Elder

libceph: support for CEPH_OSD_OP_LIST_WATCHERS

2016-08-24T21:49:15+00:00

Add support for this Ceph OSD op, needed to support the RBD exclusive
lock feature.

Signed-off-by: Douglas Fuller 
[idryomov@gmail.com: refactor, misc fixes throughout]
Signed-off-by: Ilya Dryomov 
Reviewed-by: Mike Christie 
Reviewed-by: Alex Elder

libceph: fix some missing includes

2016-07-28T00:55:35+00:00

- decode.h needs slab.h for kmalloc()
- osd_client.h needs msgpool.h for struct ceph_msgpool
- msgpool.h doesn't need messenger.h

Signed-off-by: Ilya Dryomov

libceph: change ceph_osdmap_flag() to take osdc

2016-05-30T21:00:22+00:00

For the benefit of every single caller, take osdc instead of map.
Also, now that osdc->osdmap can't ever be NULL, drop the check.

Signed-off-by: Ilya Dryomov

libceph: replace ceph_monc_request_next_osdmap()

2016-05-25T23:15:30+00:00

... with a wrapper around maybe_request_map() - no need for two
osdmap-specific functions.

Signed-off-by: Ilya Dryomov

libceph: pool deletion detection

2016-05-25T23:15:29+00:00

This adds the "map check" infrastructure for sending osdmap version
checks on CALC_TARGET_POOL_DNE and completing in-flight requests with
-ENOENT if the target pool doesn't exist or has just been deleted.

Signed-off-by: Ilya Dryomov