qa/tasks/cbt.py: change port to work with client_endpoints

hack to work with https://github.com/ceph/cbt/pull/160/

Signed-off-by: Neha Ojha <nojha@redhat.com>
(cherry picked from commit ee02416c654581d77d5f976da89b4a33dd1172e3)

Merge pull request #29254 from smithfarm/wip-40465-nautilus

nautilus: core: osd beacon sometimes has empty pg list

Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #28528 from pdvian/wip-39743-nautilus

nautilus: mon: paxos: introduce new reset_pending_committing_finishers for safety

Reviewed-by: Greg Farnum <gfarnum@redhat.com>
Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #28575 from smithfarm/wip-40381-nautilus

nautilus: rbd: tests: add "rbd diff" coverage to suite

Reviewed-by: Jason Dillaman <dillaman@redhat.com>

Merge pull request #28576 from smithfarm/wip-40382-nautilus

nautilus: tests: expected MON_CLOCK_SKEW but got none

Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #28870 from pdvian/wip-40235-nautilus

nautilus: rbd/action: fix error getting positional argument

Reviewed-by: Jason Dillaman <dillaman@redhat.com>

Merge pull request #29193 from pdvian/wip-40272-nautilus

nautilus: rbd-mirror: link against the specified alloc library

Reviewed-by: Jason Dillaman <dillaman@redhat.com>

Merge pull request #29244 from pdvian/wip-40274-nautilus

nautilus: core: librados: move buffer free functions to inline namespace

Reviewed-by: Jason Dillaman <dillaman@redhat.com>

Merge pull request #29246 from pdvian/wip-40276-nautilus

nautilus: rbd: librbd: do not unblock IO prior to growing object map during resize

Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Reviewed-by: Mykola Golub <mgolub@mirantis.com>

Merge pull request #29315 from pdvian/wip-40293-nautilus

nautilus: rbd-nbd: sscanf return 0 mean not-match.

Reviewed-by: Mykola Golub <mgolub@mirantis.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>

Merge pull request #28962 from ifed01/wip-ifed-kv-prefetch-nau

nautilus: os/bluestore: support RocksDB prefetch in buffered read mode

Reviewed-by: Sage Weil <sage@redhat.com>

Merge pull request #28639 from xiexingguo/wip-pr-28404-for-n

nautilus: osd/OSD: keep synchronizing with mon if stuck at booting

Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #28891 from ifed01/wip-ifed-fix-alloc-dump-nau

nautilus: os/bluestore: more smart allocator dump when lacking space for bluefs

Reviewed-by: Sage Weil <sage@redhat.com>

Merge pull request #28892 from ifed01/wip-ifed-fix-no-compress-nau

nautilus: os/bluestore: load OSD all compression settings unconditionally.

Reviewed-by: Sage Weil <sage@redhat.com>

Merge pull request #28893 from ifed01/wip-ifed-remove-assert-bs-tool-nau

nautilus: os/bluestore/bluestore-tool: minor fixes around migrate

Reviewed-by: Sage Weil <sage@redhat.com>

Merge pull request #28963 from ifed01/wip-ifed-add-omap-tail-nau

nautilus: os/bluestore: create the tail when first set FLAG_OMAP

Reviewed-by: Sage Weil <sage@redhat.com>

Merge pull request #28966 from liewegas/wip-set-aio-write-max-nautilus

nautilus: os/bluestore: fix >2GB bluefs writes

Reviewed-by: Igor Fedotov <ifedotov@suse.com>
Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #29023 from ifed01/wip-ifed-fix-stuplid-alloc-len0-nau

nautilus: os/bluestore: avoid length overflow in extents returned by Stupid Allocator

Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>

Merge pull request #29147 from pdvian/wip-40267-nautilus

nautilus: common: OutputDataSocket retakes mutex on error path

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29168 from b-ranto/wip-n-mgr-metadata

nautilus: mgr: Add mgr metdata to prometheus exporter module

Reviewed-by: Jan Fajerski <jfajerski@suse.com>
Reviewed-by: Paul Cuzner <pcuzner@redhat.com>

Merge pull request #29173 from neha-ojha/wip-40583-nautilus

nautilus:common/options.cc: Lower the default value of osd_deep_scrub_large_omap_object_key_threshold

Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: David Zafman <dzafman@redhat.com>

Merge pull request #29194 from pdvian/wip-40273-nautilus

nautilus: mgr: use ipv4 default when ipv6 was disabled

Merge pull request #29207 from smithfarm/wip-40904-nautilus

nautilus: mgr/influx: module fails due to missing close() method

Merge pull request #29227 from ifed01/wip-ifed-slow-ops2-nau

nautilus: bluestore: add slow op detection for collection_listing

Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #28756 from smithfarm/wip-40231-nautilus

nautilus: core: maybe_remove_pg_upmap can be super inefficient for large clusters

Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>

Merge pull request #28869 from dzafman/wip-backport-40073

nautilus: osd: Fix the way that auto repair triggers after regular scrub

Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #28993 from smithfarm/wip-40730-nautilus

nautilus: mon: auth mon isn't loading full KeyServerData after restart

Reviewed-by: Kefu Chai <kchai@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>

Merge pull request #29115 from liewegas/wip-39693-nautilus

nautilus: osd/PG: fix cleanup of pgmeta-like objects on PG deletion

Reviewed-by: Neha Ojha <nojha@redhat.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>

Merge pull request #29140 from liewegas/wip-40441-nautilus

nautilus: msg/async, v2: make the reset_recv_state() unconditional

Reviewed-by: Radoslaw Zarzynski <rzarzyns@redhat.com>

Merge pull request #29141 from liewegas/wip-msg-async-1-nautilus

nautilus: msg/async: avoid unnecessary costly wakeups for outbound messages

Merge pull request #29142 from liewegas/wip-msg-noneed-set-connection-nautilus

nautilus: msg/async: no-need set connection for Message.

Reviewed-by: Ricardo Dias <rdias@suse.com>

Merge pull request #29143 from liewegas/wip-secure-nautilus

nautilus: msg/async: enable secure mode by default, no longer experimental

Reviewed-by: Ricardo Dias <rdias@suse.com>
Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge pull request #29159 from smithfarm/wip-40845-nautilus

nautilus: core: MDSMonitor: use stringstream instead of dout for mds repaired

Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>

Merge pull request #29188 from badone/wip-nautilus-lazy-omap-stats-backport-tracker-40744

nautilus: core: lazy omap stat collection

Reviewed-by: Sage Weil <sage@redhat.com>

Merge pull request #28550 from smithfarm/wip-40007-nautilus

nautilus: rgw: fix prefix handling in LCFilter

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28648 from pdvian/wip-40107-nautilus

nautilus: rgw: Librgw doesn't GC deleted object correctly

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28712 from pdvian/wip-40134-nautilus

nautilus: rgw: TempURL should not allow PUTs with the X-Object-Manifest.

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28713 from smithfarm/wip-40505-nautilus

nautilus: rgw: fix miss get ret in STSService::storeARN

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28714 from smithfarm/wip-40515-nautilus

nautilus: rgw: multisite: DELETE Bucket CORS is not forwarded to master zone

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28715 from smithfarm/wip-40508-nautilus

nautilus: rgw: conditionally allow builtin users with non-unique email addresses

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28728 from joke-lee/nautilus

nautilus: rgw, Policy should be url_decode when assume_role

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28729 from joke-lee/nautilus-backport-28172

nautilus: rgw: fix rgw crash and set correct error code

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28735 from smithfarm/wip-40125-nautilus

nautilus: rgw: hadoop-s3a suite failing with more ansible errors

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28736 from smithfarm/wip-40129-nautilus

nautilus: rgw: Swift interface: server side copy fails if object name contains "?"

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28737 from smithfarm/wip-40137-nautilus

nautilus: rgw: the Multi-Object Delete operation of S3 API wrongly handles the Code response element

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28739 from smithfarm/wip-40142-nautilus

nautilus: rgw: multisite: 'radosgw-admin bucket sync status' should call syncs_from(source.name) instead of id

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28751 from pdvian/wip-40150-nautilus

nautilus: rgw: add 'GET /admin/realm?list' api to list realms

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28854 from pdvian/wip-40226-nautilus

nautilus: rgw_file: include tenant when hashing bucket names

Reviewed-by: Matt Benjamin <mbenjami@redhat.com>

Merge pull request #28886 from pdvian/wip-40263-nautilus

nautilus: rgw_file: all directories are virtual with respect to contents

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29154 from smithfarm/wip-40591-nautilus

nautilus: rgw: deleting bucket can fail when it contains unfinished multipart uploads

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29163 from smithfarm/wip-40851-nautilus

nautilus: rgw: multisite: radosgw-admin commands should not modify metadata on a non-master zone

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29205 from smithfarm/wip-40760-nautilus

nautilus: rgw: Save an unnecessary copy of RGWEnv

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29265 from smithfarm/wip-40124-nautilus

nautilus: rgw: hadoop-s3a suite failing with more ansible errors

Merge pull request #29286 from smithfarm/wip-40355-nautilus

nautilus: rgw: provide admin-friendly reshard status output

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29287 from smithfarm/wip-40358-nautilus

nautilus: rgw: set null version object issues

Merge pull request #29310 from smithfarm/wip-40349-nautilus

nautilus: rgw/OutputDataSocket: append_output(buffer::list&) says it will (but does not) discard output at data_max_backlog

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29311 from smithfarm/wip-40352-nautilus

nautilus: rgw: multisite: RGWListBucketIndexesCR for data full sync needs pagination

Merge pull request #29313 from smithfarm/wip-40512-nautilus

nautilus: rgw: Put LC doesn't clear existing lifecycle

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29325 from smithfarm/wip-40450-nautilus

nautilus: core: s3tests-test-readwrite failed in rados run (Connection refused)

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #28549 from smithfarm/wip-39749-nautilus

nautilus: rgw: multisite: fix --bypass-gc flag for 'radosgw-admin bucket rm'

Reviewed-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #29040 from dcasier/wip-40100-nautilus

nautilus: ceph-volume: lvm.activate: Return an error if WAL/DB devices absent

Reviewed-by: Jan Fajerski <jfajerski@suse.com>
Reviewed-by: Alfredo Deza <adeza@redhat.com>

qa/rgw: update default port in perl workunits

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 1643879218638915073d5310b859a94d10ffeac6)

qa/rgw: extra s3tests tasks use rgw endpoint configuration

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 09e992ff01b4ce286540e1230a30df67103f5968)

rgw_lc: use a new bl while encoding RGW_ATTR_LC

The current code seems to append the value to the bucket attr which isn't what
we want

Fixes: https://tracker.ceph.com/issues/39654
Signed-off-by: Abhishek Lekshmanan <abhishek@suse.com>
(cherry picked from commit e23af175aff1d80a7857406f7c17f5a609ad7e5e)

rgw/multisite:RGWListBucketIndexesCR for data full sync pagination

RGWListBucketIndexesCR uses the 'marker' from remote zone's RGWOp_Metadata_List
admin api to list all keys for data sync.

Fixes http://tracker.ceph.com/issues/39551

Signed-off-by: Shilpa Jagannath <smanjara@redhat.com>
(cherry picked from commit 708ba6dcc90525c8c4316760e01ee9b1e6da21b7)

rgw/OutputDataSocket: actually discard data on full buffer

A dout message in OutputDataSocket::append_output() states that
data will be dropped when appending would cause data_max_backlog
to be exceeded--but the method appends it anyway.

Log output discards at level 0, as messages will be lost.  Suppress
repeated warnings mod 100.  Switch to vector.

Fixes: http://tracker.ceph.com/issues/40178
Signed-off-by: Matt Benjamin <mbenjamin@redhat.com>
(cherry picked from commit c806b825dae649829de8847d36cb21ffd2bbee8e)

rbd-nbd: sscanf return 0 mean not-match.

When exec:  rbd-nbd map rbd/image --device /dev/image
The error message is:
rbd-nbd: failed to open device: /dev/image.

In fact, it should print:
rbd-nbd: invalid device path: /dev/image (expected /dev/nbd{num})

Meantime change help which make more understand.

Fixes: http://tracker.ceph.com/issues/39269
Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>
(cherry picked from commit 5b5c21be7138dc29f190887061f3a1de457a2e24)

Merge pull request #29260 from jan--f/wip-40921-nautilus

nautilus: ceph-volume: missing string substitution when reporting mounts

Reviewed-by: Alfredo Deza <adeza@redhat.com>

rgw: set null version object acl issues

1.set null version object acl will create empty index
RGWRados::set_attrs did not clear instance, so index prepare, complete got instance=null,
which lead to empty index 1000_<obj>_i_null.
there is no harm to create empty index, but listomapkeys to find that key.

2.if object is exist with versioned key, we can set none exists null version object
order:
1) enable bucket version
2) put obj
3) disable bucket version
4) set versoned_id=null acl will succeed which should not

Fixes: http://tracker.ceph.com/issues/36763
Signed-off-by: Tianshan Qu <tianshan@xsky.com>
(cherry picked from commit ca6e5c89e8d6da498da15f0eea4bcd4d271b44e9)

rgw: provide admin friendly reshard status output

Signed-off-by: Mark Kogan <mkogan@redhat.com>
(cherry picked from commit ba4167c2f30fbb868482d48aaada6388f58de920)

rgw: update the "radosgw-admin reshard status"
command documentation with expected output examples

Fixes: http://tracker.ceph.com/issues/37615
Signed-off-by: Mark Kogan <mkogan@redhat.com>
(cherry picked from commit 8565ec0db69223ae71766ba000eecc0d2f7d14c2)

qa/rgw: add dnsmasq back to s3a-hadoop

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 8c8a706b6f4cb3b2a5b89aa1eb06b7e47909852d)

qa/rgw: remove ceph-ansible from s3a-hadoop suite

Fixes: http://tracker.ceph.com/issues/39706
Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 0fc2c8ecee2b6233292b9fd1325347fd0fdf9171)

Conflicts:
qa/tasks/s3a_hadoop.py
- mimic lacks the "if hadoop_ver == 'trunk'" conditional block

qa/rgw: use default ports (80 or 443) unless overridden

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 3ff5f0c2406e40d1024d8152e0ac9400302a757a)

qa/rgw: rgw task can override --rgw-dns-name on the command line

the value for rgw_dns_name isn't known until a machine is assigned, so
it can't be set via 'override: conf:'. add a per-client config option
to the rgw task so it can add the endpoint's hostname and/or s3website
hostname on the radosgw command line

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 658e5932fb79e2d33b73363b6ce76ff299809e16)

qa/rgw: allow rgw client config to override port

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 921faebb723c11686bf790ca424c952a786f358a)

ceph-volume:util: Use proper param substition

Fixes: https://tracker.ceph.com/issues/25030
Signed-off-by: Shyukri Shyukriev <shshyukriev@suse.com>
(cherry picked from commit 654660cd89fe9d93087d390805651c860bf4e862)

osd: copy (don't move) pg list when sending beacon

If we move the list, then a second beacon sent before the pg list refreshes
will be empty.

Fixes: http://tracker.ceph.com/issues/40377
Signed-off-by: Sage Weil <sage@redhat.com>
(cherry picked from commit f2f6e170de100cb57d06e4b9a3dbba65530f745f)

Merge pull request #28958 from smithfarm/wip-40710-nautilus

nautilus: doc: Document more cache modes

Reviewed-by: Kefu Chai <kchai@redhat.com>

Merge pull request #28919 from LenzGr/nautilus-documentation

nautilus: doc: Improved dashboard feature overview

Reviewed-by: Tatjana Dehler <tdehler@suse.com>
Reviewed-by: Ricardo Marques <rimarques@suse.com>
Reviewed-by: Tiago Melo <tmelo@suse.com>
Reviewed-by: Patrick Nawracay <pnawracay@suse.com>
Reviewed-by: Laura Paduano <lpaduano@suse.com>
Reviewed-by: Volker Theile <vtheile@suse.com>

Merge pull request #28738 from smithfarm/wip-40140-nautilus

nautilus: doc: steps to disable metadata_heap on existing rgw zones

Reviewed-by: Casey Bodley <cbodley@redhat.com>

librbd: do not unblock IO prior to growing object map during resize

This could result in a small race condition where IO is able to write
beyond the current extent of the object map, resulting in an assertion
failure.

Fixes: http://tracker.ceph.com/issues/39952
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit c8ce520870ef46ac00dfea8acfbff46f8b869913)

librados: move buffer free functions to inline namespace

'buffer::raw' factory methods and similar methods are now
wrapped in the 'v14_2_0' inline namespace for export via the
public librados API.

Fixes: http://tracker.ceph.com/issues/39972
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 4ac8bc79e7fc128f10b38457c93b092b5c8060ad)

os/bluestore: add slow op detector for collection listing

Signed-off-by: Igor Fedotov <ifedotov@suse.com>
(cherry picked from commit 5218e5ee6e741dd65b9d1c9b366c135b7b000b6b)

 Conflicts:
src/common/legacy_config_opts.h
src/common/options.cc
trivial

os/bluestore: parametrize latency threshold for log_latency funcs..

Signed-off-by: Igor Fedotov <ifedotov@suse.com>
(cherry picked from commit 00af2c411dec6c8a70f4a2c8e4b0398e348fd037)

os/bluestore: cleanup around slow op logging.

We don't need macros any more.

Signed-off-by: Igor Fedotov <ifedotov@suse.com>
(cherry picked from commit 2f5bd9c48f3818b85a502b650db1056004267ccd)

os/bluestore: fix origin reference in logging slow ops.

Signed-off-by: Igor Fedotov <ifedotov@suse.com>
(cherry picked from commit 76c5993601e7fa3346a7958f6e8d2f4e68b07c9a)

mgr/influx: try to call close()

let's at least try to call influxclient.close() which in turn closes the
requests.Session

see
https://github.com/influxdata/influxdb-python/blob/v4.1.1/influxdb/client.py
and
https://github.com/influxdata/influxdb-python/blob/v5.0.0/influxdb/client.py

Fixes: http://tracker.ceph.com/issues/40174
Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit 8066a55b324643a40f37243262aa138d959dee91)

rgw: Save an unnecessary copy of RGWEnv

fixes: https://tracker.ceph.com/issues/40183

Signed-off-by: Mark Kogan <mkogan@redhat.com>
(cherry picked from commit 0693ec241ec40b3b7c21e9182b99213024b41049)

os/bluestore: proper locking for BlueFS prefetching

Signed-off-by: Igor Fedotov <ifedotov@suse.com>
(cherry picked from commit c3968979d003aaff4f8022460d4e36a02c8c7165)

osd: Modify lazy omap stats to only show one copy

Only show stats from the primary to get more in line with other pg stats
representations.

Signed-off-by: Brad Hubbard <bhubbard@redhat.com>
(cherry picked from commit 490829c8eaf14f41de978ac0f93ecda3df8bcdef)

tests: Add test for lazy omap stat collection

Signed-off-by: Brad Hubbard <bhubbard@redhat.com>
(cherry picked from commit 88e9ca58a06ba572ff4c6f6125a8ba7f8e0a7795)

Merge pull request #29137 from yuriw/wip-yuriw-40832-nautilus

qa/tests: added 14.2.2 to the mix

Reviewed-by: Josh Durgin <jdurgin@redhat.com>

mgr: use ipv4 default when ipv6 was disabled

Fixes: https://tracker.ceph.com/issues/40023
Signed-off-by: kungf <yang.wang@easystack.cn>
(cherry picked from commit 38e7083301f4d5e419f4c7c1fb596d529d3ab83c)

rbd-mirror: link against the specified alloc library

As a daemon, use the build-time specified alloc library
(tcmalloc/jemalloc) when linking the application.

Fixes: http://tracker.ceph.com/issues/40110
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
(cherry picked from commit 163c122941c2ef138a525358e70b773df5948751)

Merge pull request #28768 from dzafman/wip-40265

nautilus: osd: Don't randomize deep scrubs when noscrub set

Reviewed-by: Josh Durgin <jdurgin@redhat.com>

Merge pull request #29050 from rhcs-dashboard/fix-40768-nautilus

nautilus: mgr/dashboard: switch ng2-toastr to ngx-toastr

Reviewed-by:  Tiago Melo <tmelo@suse.com>
Reviewed-by: Volker Theile <vtheile@suse.com>
Reviewed-by: Yuri Weinstein <yweinste@redhat.com>

qa/tests: added 14.2.2 to the mix

Fixes: http://tracker.ceph.com/issues/40251
Fixes: http://tracker.ceph.com/issues/40832
Signed-off-by: Yuri Weinstein <yweinste@redhat.com>

Merge pull request #28230 from ivancich/nautilus-wip-rgw-admin-unordered

nautilus: rgw: allow radosgw-admin to list bucket w --allow-unordered

Reviewed-by: Matt Benjamin <mbenjami@redhat.com>

Merge pull request #28769 from dillaman/wip-40572-nautilus

nautilus: librbd: properly track in-flight flush requests

Reviewed-by: Mykola Golub <mgolub@mirantis.com>