doc: releases/luminous: release notes for 12.2.12

Signed-off-by: Abhishek Lekshmanan <abhishek@suse.com>

Merge PR #27473 into master

* refs/pull/27473/head:
mgr/DaemonServer: prevent pgp_num reductions from outpacing pg_num merges

Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>
Reviewed-by: Neha Ojha <nojha@redhat.com>

Merge PR #27477 into master

* refs/pull/27477/head:
os/bluestore: check return value of func _open_db_and_around.

Reviewed-by: Igor Fedotov <ifedotov@suse.com>

Merge PR #27499 into master

* refs/pull/27499/head:
qa/standalone/osd/osd-markdown: fix dup command disabling

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

Merge PR #27516 into master

* refs/pull/27516/head:
mgr/rook: Fix Python 2 regression

Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: Gabriel Brascher <gabriel@apache.org>

Merge pull request #26816 from iotcg/doc

doc: correct example to use vstart to run up cluster

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

Merge pull request #27535 from yuriw/wip-yuriw-wip-yuriw-crontab-master

qa/tests: added rados on master, reduced fs, rbd, multimds

Merge pull request #27428 from cyx1231st/wip-seastar-msgr-write

crimson/net: extract do_write_dispatch_sweep()

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

qa/tests: added rados on master, reduced fs, rbd, multimds

Signed-off-by: Yuri Weinstein <yweinste@redhat.com>

Merge pull request #27515 from tchaikov/wip-seastar-fix-monc

test/crimson: fix build of unittest_seastar_monc

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

Merge pull request #27524 from tchaikov/wip-39164

install-deps.sh: install '*rpm-macros'

Reviewed-by: Boris Ranto <branto@redhat.com>

Merge pull request #27443 from Polynomial-C/tinfo

cmake: Fix build against ncurses with separate libtinfo

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

Merge PR #27527 into master

* refs/pull/27527/head:
qa/tests: run luminous-x and mimic-x 2 times a week but with high priority

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

qa/tests: run luminous-x and mimic-x 2 times a week but with high priority
hope is it will help with locking 5 nodes for tests

Signed-off-by: Yuri Weinstein <yweinste@redhat.com>

Merge PR #27345 into master

* refs/pull/27345/head:
cephfs-shell: Change type of d_name to bytes array
cephfs-shell: Revert "cephfs.pyx: add py3 compatibility"

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

install-deps.sh: install '*rpm-macros'

so `yum-builddep` can have access to the latest macros for preparing the
build dependencies

Fixes: http://tracker.ceph.com/issues/39164
Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #27504 from tchaikov/wip-qa-use-python36-for-py3-tests

qa/tasks/ceph_deploy: install python3.6 instead of python3.4 for py3 tests

Reviewed-by: Yuri Weinstein <yweinste@redhat.com>
Reviewed-by: Boris Ranto <branto@redhat.com>

mgr/rook: Fix Python 2 regression

Fixes: http://tracker.ceph.com/issues/39250
Signed-off-by: Sebastian Wagner <sebastian.wagner@suse.com>

Merge PR #27323 into master

* refs/pull/27323/head:
msg/async: avoid creating unnecessary AsyncConnectionRef

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

Merge pull request #27444 from ifed01/wip-ifed-fix-21312

os/bluestore: call fault_range prior to looking for blob to reuse

Reviewed-by: Sage Weil <sage@redhat.com>
Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>

Merge pull request #27445 from ifed01/wip-ifed-fix-39143

os/ceph-bluestore-tool: bluefs-bdev-expand asserts if no WAL

Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>
Reviewed-by: Sage Weil <sage@redhat.com>

crimson: add move ctor for CephContext and mon::Client

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

test/crimson: add dummy_auth_handler to test_monc

Signed-off-by: Yingxin Cheng <yingxincheng@gmail.com>

Merge pull request #27438 from Devp00l/wip-issue-37701

mgr/dashboard: Removes distracting search behavior

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

Merge pull request #27348 from Devp00l/wip-issue-39086

mgr/dashboard: Enable read only users to read again

Reviewed-by: Ernesto Puerta <epuertat@redhat.com>
Reviewed-by: Laura Paduano <lpaduano@suse.com>
Reviewed-by: Tatjana Dehler <tdehler@suse.com>

cmake: Fix build against ncurses with separate libtinfo

Signed-off-by: Lars Wendler <polynomial-c@gentoo.org>

cephfs-shell: Change type of d_name to bytes array

By reverting commit 5106582 'd_name' is always a bytes array. This produces
type error wherever 'd_name' is used with 'str' type. In such cases decode it.

Fixes: https://tracker.ceph.com/issues/39060
Signed-off-by: Varsha Rao <varao@redhat.com>

cephfs-shell: Revert "cephfs.pyx: add py3 compatibility"

This reverts commit 5106582fc7edae7f39161cf89e566c020fcfa0ce.

Signed-off-by: Varsha Rao <varao@redhat.com>

qa/tasks/ceph_deploy: install python3.6 instead of python3.4 for py3 tests

EPEL7 has switched over to python3.6 as the main python3. and we started
packaging python bindings for python3.6 since
https://github.com/ceph/ceph-build/pull/1283

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

Merge PR #27495 into master

* refs/pull/27495/head:
doc/releases/nautilus: fix config update step

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

qa/standalone/osd/osd-markdown: fix dup command disabling

The ceph cli tool checks for the presence of the variable, not its value.

Fixes: http://tracker.ceph.com/issues/38359
Signed-off-by: Sage Weil <sage@redhat.com>

doc/releases/nautilus: fix config update step

'ceph ... > /etc/ceph/ceph.conf' fails because bash truncates ceph.conf
before the ceph cli invocation is able to use it to connect to the cluster.

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

Merge pull request #27290 from sebastian-philipp/rook-system-namespace

mgr/rook: Support other system namespaces

Reviewed-by: Blaine Gardner <blaine.gardner@suse.com>
Reviewed-by: Rohan Gupta <rohanrgupta1996@gmail.com>
Reviewed-by: Travis Nielsen <tnielsen@redhat.com>

Merge pull request #27408 from nathan-weinberg/reformat

mgr/dashboard: Updated existing E2E tests to match new format

Reviewed-by: Laura Paduano <lpaduano@suse.com>
Reviewed-by: Tiago Melo <tmelo@suse.com>

Merge PR #27490 into master

* refs/pull/27490/head:
PendingReleaseNotes: note on python3.6 changes

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

PendingReleaseNotes: note on python3.6 changes

Fixes: http://tracker.ceph.com/issues/39164
Signed-off-by: Kefu Chai <kchai@redhat.com>

Merge pull request #27406 from rhcs-dashboard/fix-39125-master

mgr/dashboard: Add whitelist to guard

Reviewed-by: Laura Paduano <lpaduano@suse.com>
Reviewed-by: Tiago Melo <tmelo@suse.com>

Merge pull request #27289 from sebastian-philipp/rook-fix-osd-create

mgr/rook: Fix creation of bluestore OSDs

Reviewed-by: Blaine Gardner <blaine.gardner@suse.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Travis Nielsen <tnielsen@redhat.com>

os/bluestore: check return value of func _open_db_and_around.

In develop, met the following error messages:

2019-04-08 10:24:54.259 7faa25114d80  1 bdev create path /var/lib/ceph/mnt/osd-device-6-data/block.db type kernel
2019-04-08 10:24:54.259 7faa25114d80  1 bdev(0x55ef0840ce00 /var/lib/ceph/mnt/osd-device-6-data/block.db) open path /var/lib/ceph/mnt/osd-device-6-data/block.db
2019-04-08 10:24:54.259 7faa25114d80 -1 bdev(0x55ef0840ce00 /var/lib/ceph/mnt/osd-device-6-data/block.db) _lock flock failed on /var/lib/ceph/mnt/osd-device-6-data/block.db
2019-04-08 10:24:54.259 7faa25114d80 -1 bdev(0x55ef0840ce00 /var/lib/ceph/mnt/osd-device-6-data/block.db) open failed to lock /var/lib/ceph/mnt/osd-device-6-data/block.db: (11) Resource temporarily unavailable
2019-04-08 10:24:54.259 7faa25114d80 -1 bluestore(/var/lib/ceph/mnt/osd-device-6-data) _minimal_open_bluefs add block device(/var/lib/ceph/mnt/osd-device-6-data/block.db) returned: (11) Resource temporarily unavailable
2019-04-08 10:24:54.259 7faa25114d80  1 fbmap_alloc 0x55ef0754ef00 shutdown
2019-04-08 10:24:54.259 7faa25114d80  1 freelist shutdown
2019-04-08 10:24:54.259 7faa25114d80  1 bluestore(/var/lib/ceph/mnt/osd-device-6-data) _upgrade_super from 2, latest 2
2019-04-08 10:24:54.259 7faa25114d80  1 bluestore(/var/lib/ceph/mnt/osd-device-6-data) _upgrade_super done
2019-04-08 10:24:54.264 7faa25114d80 -1 *** Caught signal (Segmentation fault) **
 in thread 7faa25114d80 thread_name:ceph-osd

 ceph version 14.2.0 (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus (stable)
 1: (()+0xf5d0) [0x7faa21d655d0]
 2: (BlueStore::_open_collections(int*)+0x5b) [0x55eefd1f511b]
 3: (BlueStore::_mount(bool, bool)+0x6c6) [0x55eefd22d1c6]
 4: (OSD::init()+0x3aa) [0x55eefcda4e4a]
 5: (main()+0x14fa) [0x55eefcc4137a]
 6: (__libc_start_main()+0xf5) [0x7faa20b483d5]
 7: (()+0x5646c5) [0x55eefcd356c5]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>

mgr/DaemonServer: prevent pgp_num reductions from outpacing pg_num merges

If we are merging lots of pgs down to a much smaller number of pgs, and
the pgs are able to move quickly (faster than the merges happen), we can
end up with too many pgs on a small number of osds, triggering the max
pgs per osd limits.

Avoid this by preventing the pgp_num reductions from getting too far
out in front of the merges themselves.  Basically, cap the delta between
pgp_num and pg_num to the max_misplaced ratio.  We are already limiting
the movement caused by pgp_num by max_misplaced; this effectively just
makes sure that the actual merging (and pg_num reductions) are keeping
up.

Fixes: http://tracker.ceph.com/issues/38786
Signed-off-by: Sage Weil <sage@redhat.com>

Merge PR #27464 into master

* refs/pull/27464/head:
msg/async/frames_v2.h: fix warning

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

Merge pull request #27357 from dillaman/wip-39021

librbd: fixed several race conditions related to copyup

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

Merge pull request #27466 from wjwithagen/wjw-fix-/src/test/rgw/CMakeLists.txt

build/rgw: unittest_rgw_dmclock_scheduler does not need Boost_LIBRARIES

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

Merge pull request #27468 from tchaikov/wip-rpm-python3

rpm: add "Provides: python3-*" for python packages and cleanup

Reviewed-by: Yuri Weinstein <yweinste@redhat.com>
Reviewed-by: Boris Ranto <branto@redhat.com>

rpm: add "Provides: python3-*" for python packages

so user can install python3-rados, instead of python36-rados, without
specifying the minor version of python. also, we should not break our
teuthology tests with this naming scheme change. for instance, our
cephfs qa suite installs `python3-cephfs` for testing the `cephfs-shell`

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

Merge pull request #27309 from pritha-srivastava/wip-rgw-non-existent-object

rgw: Evaluating bucket policies also while reading permissions for an…

Reviewed-by: Adam C. Emerson <aemerson@redhat.com>
Reviewed-by: Matt Benjamin <mbenjamin@redhat.com>

rpm: always use 3 as the default python3_{pkgversion,version}

as we have the rpm macros installed in
https://github.com/ceph/ceph-build/pull/1283 .

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

build/rgw: unittest_rgw_dmclock_scheduler does not need Boost_LIBRARIES

Redo fix, also see #26799

Otherwise linking could error like:
```
/usr/local/bin/ld: /usr/local/lib/libboost_python27.so: undefined reference to `PyUnicodeUCS4_FromEncodedObject'
/usr/local/bin/ld: /usr/local/lib/libboost_python27.so: undefined reference to `PyNumber_InPlaceDivide'
........
/usr/local/bin/ld: /usr/local/lib/libboost_python27.so: undefined reference to `PyStaticMethod_Type'
/usr/local/bin/ld: /usr/local/lib/libboost_python27.so: undefined reference to `PyTuple_Size'
c++: error: linker command failed with exit code 1 (use -v to see invocation)
gmake[2]: *** [src/test/rgw/CMakeFiles/unittest_rgw_dmclock_scheduler.dir/build.make:147: bin/unittest_rgw_dmclock_scheduler] Error 1
```

Signed-off-by: Willem Jan Withagen <wjw@digiware.nl>

crimson/net: extract do_write_dispatch_sweep()

Signed-off-by: Yingxin Cheng <yingxincheng@gmail.com>

msg/async/frames_v2.h: fix warning

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

Merge pull request #27455 from wjwithagen/wjw-fix-test_weighted_shuffle.cc

test: Add `#include <array>`

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

Merge pull request #27431 from sebastian-philipp/rook-doc-update-mon

doc/mgr/orchestrator_cli: Rook orch supports mon update

Reviewed-by: Juan Miguel Olmo Martínez <jolmomar@redhat.com>

Merge pull request #25985 from l-vo/update_php_doc

doc/radosgw: update documentation examples with the current S3 PHP client

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

Merge PR #27051 into master

* refs/pull/27051/head:
mds: open import bounding dirfrags in batch
mds: remove superfluous error in StrayManager::advance_delayed()

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

Merge PR #27412 into master

* refs/pull/27412/head:
doc: add doc for blacklisting older CephFS clients

Reviewed-by: Barbora Ančincová <bara@redhat.com>
Reviewed-by: Zheng Yan <zyan@redhat.com>

Merge pull request #27194 from trociny/wip-38661

librbd: do not allow to deep copy migrating image

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

Merge pull request #27268 from trociny/wip-38364

librbd: support EC data pool images sparsify

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

mgr/dashboard: Enable read only users to read again

The dashboards Prometheus receiver API needed to receive a POST from the
frontend, but POSTs aren't allowed by default by any read only
users. As a result the receiver API call had thrown a 403 error which
redirected the user to the 403 error page. Now you can get the last
notifications via GET. This prevents the redirection for read only
users, as a result they can get the last notifications and also
see all other allowed pages again.

Fixes: https://tracker.ceph.com/issues/39086
Signed-off-by: Stephan Müller <smueller@suse.com>

Merge pull request #27452 from tchaikov/wip-crimson-auth-server

crimson: move dummy impl of AuthServer to DummyAuth

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

mgr/dashboard: Add whitelist to guard

After PR https://github.com/ceph/ceph/pull/26572, when RGW is not
  configured, accessing /rgw drop-down (daemons, users or buckets)
  results in nothing apparently happening (not even an error).

  Under the curtains, what is happening is that the ModuleStatusGuard
  has redirected the route to the rgw/501, but as this route is now
  under parent rgw route handler, which sets CanActivateChild guards,
  this results in a new ModuleStatusGuard invokation, a subsequent
  failure and a new redirection to rgw/501.

  Several approaches could be taken here:
  - Remove error pages from lazy-loaded modules. Probably it does not
  make sense to have a 501 page per component.
  - Add some whitelist to avoid this kind of loop (e.g.: 501, or any
      error page).
  - Set a max number of redirections (cautionary measure).

Fixes: https://tracker.ceph.com/issues/39125
Signed-off-by: Ernesto Puerta <epuertat@redhat.com>

mgr/rook: Support other system namespaces

Fixes http://tracker.ceph.com/issues/38799

Signed-off-by: Sebastian Wagner <sebastian.wagner@suse.com>

test: Add includefile for arrays

Otherwise Clang will complain on FreeBSD:
```
/home/jenkins/workspace/ceph-master/src/test/test_weighted_shuffle.cc:9:23: error: implicit instantiation of undefined template 'std::__1::array<char, 5>'
  std::array<char, 5> choices{'a', 'b', 'c', 'd', 'e'};
                      ^
/usr/include/c++/v1/__tuple:223:64: note: template is declared here
template <class _Tp, size_t _Size> struct _LIBCPP_TEMPLATE_VIS array;
                                                               ^
/home/jenkins/workspace/ceph-master/src/test/test_weighted_shuffle.cc:10:22: error: implicit instantiation of undefined template 'std::__1::array<int, 5>'
  std::array<int, 5> weights{100, 50, 25, 10, 1};
                     ^
/usr/include/c++/v1/__tuple:223:64: note: template is declared here
template <class _Tp, size_t _Size> struct _LIBCPP_TEMPLATE_VIS array;
```

Signed-off-by: Willem Jan Withagen <wjw@digiware.nl>

crimson/mon: implement AuthServer methods

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

crimson/auth: move dummy impl of AuthServer to DummyAuth

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

Merge pull request #27416 from tchaikov/wip-crimson-auth

crimson: update osd when peer gets authenticated

Reviewed-by: Samuel Just <sjust@redhat.com>

crimson: update osd when peer gets authenticated

* common/auth_handler.h: add an abstract class of AuthHandler, the one who is interested in
  an authenticated peer should implement this class
* mon/MonClient: let mon::Client implement AuthServer, as it has access the keyring. it
  will update the registered AuthHandler if the client (peer) is
  authenticated.
* osd: implement AuthHandler class. we will keep track of the connected
  sessions along their caps in a follow-up change.

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

Merge pull request #27426 from tchaikov/wip-crimson-setup-msgr

crimson/osd: consolidate the code to initialize msgrs

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

Merge pull request #27286 from tchaikov/wip-strncpy-with-nul

osdc/Objecter: always add `\0' after strncpy()

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

Merge pull request #27429 from cyx1231st/wip-seastar-msgr-perf2

test/crimson: include writes in perf_crimson/async_server

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

test/crimson: wrap perf parameters as structured data

Signed-off-by: Yingxin Cheng <yingxincheng@gmail.com>

test/crimson: perf_crimson/async_server write test support

Allow server to have write/send workload with specified block size.

Signed-off-by: Yingxin Cheng <yingxincheng@gmail.com>

Merge pull request #27422 from iotcg/doc_pg

doc: fix parameter to set pg autoscale mode

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

Merge PR #27427 into master

* refs/pull/27427/head:
cephfs-shell: Use colorama module instead of colorize

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

Merge PR #27369 into master

* refs/pull/27369/head:
docs: Add note to execute cephfs-shell

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

Merge PR #27256 into master

* refs/pull/27256/head:
mds: drop reconnect message from non-existent session

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

Merge PR #27214 into master

* refs/pull/27214/head:
mds/server: check directory split after rename.

Reviewed-by: Zheng Yan <zyan@redhat.com>

msg/async: avoid creating unnecessary AsyncConnectionRef

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

Merge PR #27415 into master

* refs/pull/27415/head:
qa: decouple session map test from simple msgr
msg/async: move connection ref
msg/async: dec active connections when marked down

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

Merge PR #27414 into master

* refs/pull/27414/head:
msg/async: resolve gcc warning

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

qa: decouple session map test from simple msgr

Instead of looking at the number of threads (used by the simple messenger) to
judge the coming and going of connections, use the (async) messenger perf
counters.

Plus some other minor improvements.

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

msg/async: move connection ref

Trivial optimization.

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

msg/async: dec active connections when marked down

Otherwise, tests can't tell when a connection is stopped until it's eventually
"lazily" deleted. This should be safe since the perf counter is manipulating an
atomic value.

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

os/ceph-bluestore-tool: bluefs-bdev-expand asserts if no WAL

Fixes: https://tracker.ceph.com/issues/39143
Signed-off-by: Igor Fedotov <ifedotov@suse.com>

doc: add doc for blacklisting older CephFS clients

Fixes: http://tracker.ceph.com/issues/39130
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>

librbd: force a copyup object map update if migration completes

If a live-migration copyup was in-progress when the copyup completes,
force the object map to be updated.

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

librbd: cleaned up snap/parent lock release in read-from-parent path

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

test/librbd: initial unit test for copyup state machine

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

librbd: copyup should restart delayed ops against the same object

This avoids the potential for a race condition where an in-flight
copyup is removed from the in-flight copyup list and a subsequent
IO against the same object causes a second in-flight copyup.

Fixes: http://tracker.ceph.com/issues/39021
Signed-off-by: Jason Dillaman <dillaman@redhat.com>

librbd: merge copyup object map update states

The object map HEAD and HEAD/snapshot update states have been
simplified and merged into a single state. This also fixes
several potential race conditions and an issue where CoR might
incorrectly mark the HEAD object has exists+dirty.

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

librbd: refactor copyup state machine to match current code style

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

librbd: properly hold snap/parent locks during IO

The ImageCtx::parent pointer was dereferenced without holding the lock
which could lead to a crash. The ImageCtx::migration_info structure
was also dereferenced without holding a lock.

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

librbd: empty IO requests should complete in new context

This will avoid the possibility of a lock being held by the caller
and having the IO immediately complete back to the calling state
machine.

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

librbd: deep-copy object copy should register an in-flight op

When handling live migrations, the source image is the parent
image of the destination image. To prevent the parent image from
being closed while a request is in-flight, the object copy
state machine now registers an async operation with the source
image.

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

librbd: deep-copy object copy should delay computing object existence

This prevent a potential recursive lock on the destination image's
snap_lock.

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

os/bluestore: call fault_range properly prior to looking for blob to reuse

Fixes: https://tracker.ceph.com/issues/21312
Signed-off-by: Igor Fedotov <ifedotov@suse.com>

Merge PR #27281 into master

* refs/pull/27281/head:
script/ceph-release-notes: alternate merge commit format

Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
Reviewed-by: Abhishek Lekshmanan <abhishek.lekshmanan@gmail.com>

Merge pull request #26782 from iotcg/master

vstart.sh: fix CEPH_PORT check and cleanups

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

Merge PR #27437 into master

* refs/pull/27437/head:
vstart: add an alias for cephfs-shell to vstart_environment.sh

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

Merge PR #27419 into master

* refs/pull/27419/head:
common: add --log-early command line option

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

Merge pull request #27091 from yuvalif/s2_pubsub_api_new

S3 compatible pubsub API