krbd: retry on transient errors from udev_enumerate_scan_devices()

udev_enumerate_scan_devices() doesn't handle disappearing devices well.
If called while some devices are being removed, it sometimes propagates
ENOENT and ENODEV errors encountered operating on directory entries in
/sys that no longer exist.  Some of these errors are suppressed, but
this isn't reliable and varies across versions.  In particular, systemd
239 suppresses ENODEV from sd_device_new_from_syspath() but doesn't
suppress ENODEV from sd_device_get_devnum().  In systemd 243 the call
to sd_device_get_devnum() has been moved, but it still leaks ENOENT
from sd_device_get_is_initialized() (referring to the body of
FOREACH_DIRENT_ALL loop in enumerator_scan_dir_and_add_devices()).

Assume that all ENOENT and ENODEV errors are transient and retry the
call to udev_enumerate_scan_devices().  Don't limit the number, but log
each retry.

Fixes: https://tracker.ceph.com/issues/41036
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit e5921ef4a89f497a0bff6510fce0bb5c242d6172)

Conflicts:
src/krbd.cc [ rbd namespaces not in mimic ]

qa: add script to test udev event reaping

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit 898c113f93a05a18f47f2dd6a94f7cf56c858185)

krbd: increase udev netlink socket receive buffer to 2M

Even though with the previous commit we no longer block between binding
the socket and starting handling events, we still want a larger receive
buffer to accommodate for scheduling delays.  Since the filtering is
done in the listener, an estimate focused on just rbd is not accurate,
but anyway: a pair of "rbd" and "block" events for "rbd map" take 2048
bytes in the receive buffer.  This allows for roughly a thousand of
them ("rbd map" and "rbd unmap" require root and libudev makes use of
SO_RCVBUFFORCE so rmem_max limit is ignored).

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit 1c6cac1acaefdf59c3265d70c8d2191c59f14652)

krbd: avoid udev netlink socket overrun

Because the event(s) we are interested in can be deliveled while we are
still in the kernel finishing map or unmap, we start listening for udev
events before going into the kernel.  However, if (un)mapping takes its
time, udev netlink socket can be fairly easily overrun -- the filtering
is done on the listener side, so we get to process everything, not just
rbd events.  If any of the events of interest get dropped (ENOBUFS), we
hang in poll().

Go into the kernel in a separate thread and leave the main thread to
run the event loop.  The return value is communicated to the reactor
though a pipe.

Fixes: https://tracker.ceph.com/issues/41404
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit 5444a1111523bc100bea60958b2671674f6208ac)

Conflicts:
src/krbd.cc [ krbd_spec, ceph_abort_msgf() not in mimic ]

krbd: reap all available events before polling again

This also exposes errors from udev_monitor_receive_device() which were
previously ignored.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit 53aab34dafcca2ec022102a03905e59cfa34fc84)

krbd: separate event reaping from event processing

Move event processing into UdevMapHandler and UdevUnmapHandler
functors and replace wait_for_udev_{add,remove}() with a single
wait_for_mapping() template.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit c84f9e2f2df47361d7a928d0b25cb84ef332c055)

Conflicts:
src/krbd.cc [ krbd_spec not in mimic ]

krbd: get rid of poll() timeout

This timeout was added as a (very poor) workaround for an issue
addressed in commit 42dd1eae630f ("krbd: fix rbd map hang due to udev
return subsystem unordered").

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
(cherry picked from commit ffb66ff7106b9d200a7da355199ab362fb611c31)

Conflicts:
src/krbd.cc [ ceph_abort_msgf() not in mimic ]

common/thread: Fix race condition in make_named_thread

The thread may well no longer exist by the time we try to set the
name, so have the thread set its own name first thing.

Thanks to Ilya Dryomov <idryomov@gmail.com> for pointing it out.

Signed-off-by: Adam C. Emerson <aemerson@redhat.com>
(cherry picked from commit 2bd106ec0da52e7fcf616d7b3cb20d570c1a5c50)

Merge pull request #31211 from sebastian-philipp/mimic-ceph-volume-device_id

mimic: ceph-volume: add Ceph's device id to inventory

Merge pull request #31258 from jan--f/wip-41288-mimic

mimic: doc: update bluestore cache settings and clarify data fraction

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

Merge pull request #31254 from alfredodeza/wip-rm42292-mimic

mimic: qa/ceph-disk: use a Python2.7 compatible version of pytest

Reviewed-by: Yuri Weinstein <yweinste@redhat.com>
Reviewed-by: Nathan Cutler <ncutler@suse.com>

Merge pull request #31227 from jan--f/c-v-missing-mimic-lvm-backports

Add some missing backports to mimic

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

doc: update bluestore cache settings and clarify data fraction

Fixes: http://tracker.ceph.com/issues/39522
Signed-off-by: Jan Fajerski <jfajerski@suse.com>
(cherry picked from commit 9d8336a7f418fe2bb11361dd74a214403b1e5be7)

qa/ceph-disk: use a Python2.7 compatible version of pytest

Signed-off-by: Alfredo Deza <adeza@redhat.com>
(cherry picked from commit 149ce7af588b9c052e41d687e722fee9b7255d7c)

Merge pull request #28452 from thmour/mimic_test

mimic: mds: stopping MDS with a large cache (40+GB) causes it to miss heartbeats

Reviewed-by: Venky Shankar <vshankar@redhat.com>

Merge pull request #30950 from sidharthanup/mds-evict-duplicate-mimic

mimic: mds: Fix duplicate client entries in eviction list

Reviewed-by: Venky Shankar <vshankar@redhat.com>

ceph-volume: update volume's tags structure when setting tags

Signed-off-by: Mohamad Gebai <mgebai@suse.com>
(cherry picked from commit 4a1198deffb0baf647a6a31e03cbfe98f011ff14)

ceph-volume: add clear_tag function for LVs

Signed-off-by: Mohamad Gebai <mgebai@suse.com>
(cherry picked from commit 776d485af8b6225fd4059952df36e40ef0ad12b4)

ceph-volume: add reduce_vg function

Signed-off-by: Mohamad Gebai <mgebai@suse.com>
(cherry picked from commit ce0184b5d7f24f2b3b6a9491e0f3c1c847b8c0e7)

ceph-volume: look for hidden partitions when populating lvs

Signed-off-by: Mohamad Gebai <mgebai@suse.com>
(cherry picked from commit 463091e46ba4032f1b8d90a6770fd7e2d3277a74)

ceph-volume: set a 1G extent size when creating vgs

This allows us to create larger lvs than the default of 4m
and is easier to reason about when sizing the lvs as everythign is
reported as GBs.

Signed-off-by: Andrew Schoen <aschoen@redhat.com>
(cherry picked from commit 4a1b97efc87f3df15a39a76de074b4791f3528ca)

Merge pull request #30225 from dzafman/wip-network-mimic

mimic: core: Health warnings on long network ping times

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

ceph-volume: add Ceph's device id to inventory

This will benefit the orchestrator and dashboard to show a unified view of devices with SMART data

Signed-off-by: Sebastian Wagner <sebastian.wagner@suse.com>
(cherry picked from commit e70d6041c1a093ed5c2b77abe17e1ede533d9659)

osd/OSD: auto mark heartbeat sessions as stale and tear them down

The primary benefit is that the OSD doesn't need to keep a flood of
blocked heartbeat messages around in memory.
This prevents OSDs from accumulating heartbeat messages due to a
broken switch and then exhausting the whole node's memory:

Jun 11 04:19:26 host-192-168-9-12 kernel: [409881.137077] Out of memory:
Kill process 1471476 (ceph-osd) score 47 or sacrifice child
Jun 11 04:19:26 host-192-168-9-12 kernel: [409881.146054] Killed process
1471476 (ceph-osd) total-vm:4822548kB, anon-rss:3097860kB,
file-rss:2556kB, shmem-rss:0kB

Fixes: http://tracker.ceph.com/issues/40586
Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
(cherry picked from commit 6cc90f363b8096d2d5fad30e57426d0cea9e3478)

Conflicts:
src/osd/OSD.cc (no boot_finisher.stop() and no lock_guard)
src/osd/OSD.h (trivial)

Fixed get_val() call in reset_heartbeat_peers()

mds: handle negative decay counter

Problem only exists in Luminous/Mimic.

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry-picked from commit 5f23246)

test/mds: fix Session cons call

Problem did not exist in master.

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry-picked from commit 5ed5c51)

Conflicts:
src/test/mds/TestSessionFilter.cc

mds: simplify recall warnings

Instead of a timeout and complicated decisions about whether the client is
releasing caps in an expeditious fashion, just use a DecayCounter that tracks
the number of caps we've recalled. This counter is decremented whenever the
client releases caps. If the counter passes a threshold, then we raise the
warning.

Similar reworking is done for the steady-state recall of client caps. Another
release DecayCounter is added so we can tell when the client is not releasing
any more caps.

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit c0b3a11)

Conflicts:
PendingReleaseNotes
src/mds/Beacon.cc
src/mds/Server.cc
src/mds/SessionMap.cc
src/mds/SessionMap.h

mds: add extra details for cache drop output

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 3bc093f)

Conflicts:
src/mds/Server.cc

qa: test mds_max_caps_per_client conf

That the MDS will not let a client sit above mds_max_caps_per_client caps.

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 30aaa88)

mds: limit maximum number of caps held by session

This is to prevent unsustainable situations where a client has so many
outstanding caps that a linear traversal/operation on the session's caps takes
unacceptable amounts of time.

Fixes: http://tracker.ceph.com/issues/38022
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 48ca097)

Conflicts:
PendingReleaseNotes
src/mds/Server.cc

mds: adapt drop cache for incremental recall

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 7244cae)

mds: recall caps incrementally

As with trimming, use DecayCounters to throttle the number of caps we recall,
both globally and per-session.

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit ef46216)

Conflicts:
PendingReleaseNotes
qa/suites/fs/bugs/client_trim_caps/tasks/trim-i22073.yaml
src/mds/Beacon.cc
src/mds/MDSDaemon.cc
src/mds/Server.cc
src/mds/Server.h
src/mds/SessionMap.cc
src/mds/SessionMap.h

mds: cleanup Session init

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit ce153b8)

Conflicts:
src/mds/SessionMap.cc
src/mds/SessionMap.h

mds: adapt drop cache for incremental trim

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit b750b3b)

mds: add throttle for trimming MDCache

This is necessary when the MDS cache size decreases by a significant amount.
For example, when stopping a large MDS or when the operator makes a large cache
size reduction.

Fixes: http://tracker.ceph.com/issues/37723
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 7bf2f31)

Conflicts:
PendingReleaseNotes
src/mds/MDCache.cc
src/mds/MDCache.h

mds: cleanup SessionMap init

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
(cherry picked from commit 69efdaf)

Conflicts:
    src/mds/SessionMap.h

Merge pull request #28585 from ukernel/mimic-40327

mimic: mds: change how mds revoke stale caps

Reviewed-by: Venky Shankar <vshankar@redhat.com>

Merge pull request #30841 from smithfarm/wip-42263-mimic

mimic: tests: do not take ceph.conf.template from ceph/teuthology.git

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

Merge pull request #30918 from smithfarm/wip-42122-mimic

mimic: cephfs: client: add procession of SEEK_HOLE and SEEK_DATA in lseek.

Reviewed-by: Venky Shankar <vshankar@redhat.com>

Merge pull request #30979 from smithfarm/wip-41464-mimic

mimic: tools: ceph-objectstore-tool: update-mon-db: do not fail if incmap is missing

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

Merge pull request #31017 from smithfarm/wip-40896-mimic-revert

mimic: cephfs: Revert "ceph_volume_client: convert string to bytes object"

Reviewed-by: Venky Shankar <vshankar@redhat.com>

Merge pull request #29219 from smithfarm/wip-38875-mimic

mimic: mds: high debug logging with many subtrees is slow

Reviewed-by: Venky Shankar <vshankar@redhat.com>

Merge pull request #30932 from smithfarm/wip-42034-mimic

mimic: cephfs: client: EINVAL may be returned when offset is 0.

Reviewed-by: Venky Shankar <vshankar@redhat.com>

Merge pull request #30933 from smithfarm/wip-42038-mimic

mimic: cephfs: client: _readdir_cache_cb() may use the readdir_cache already clear

Reviewed-by: Venky Shankar <vshankar@redhat.com>

Merge pull request #31090 from smithfarm/wip-42416-mimic

mimic: doc/rbd: s/guess/xml/ for codeblock lexer

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

doc/rbd: s/guess/xml/ for codeblock lexer

this change silences the warning of

```
doc/rbd/qemu-rbd.rst:174: WARNING: Pygments lexer name 'guess' is not
known
```

see http://pygments.org/docs/lexers/, we should use "xml" for XML .

Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit df226da996e468d2707b08eb012d54b4e37ffdc6)

Merge pull request #30775 from smithfarm/wip-41979-mimic

mimic: rgw: fix list versions starts with version_id=null

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

Merge pull request #30868 from smithfarm/wip-41324-mimic

mimic: rgw: datalog/mdlog trim commands loop until done

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

Merge pull request #30980 from smithfarm/wip-41496-mimic

mimic: rgw: fix the bug of rgw not doing necessary checking to website configuration

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

Merge pull request #30891 from smithfarm/wip-41715-mimic

mimic: rgw: fix refcount tags to match and update object's idtag

Reviewed-by: J. Eric Ivancich <ivancich@redhat.com>

Merge pull request #30977 from theanalyst/wip-41570-mimic

mimic: rgw: asio: check the remote endpoint before processing requests

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

qa/tasks/ceph.conf: do not warn on TOO_FEW_OSDS

Signed-off-by: Sage Weil <sage@redhat.com>
(cherry picked from commit 0483c1c3e7ffdfa6a6f65c5ef000c45d2f096428)

Merge pull request #30713 from smithfarm/wip-40258-mimic

mimic: cmake: detect armv8 crc and crypto feature using CHECK_C_COMPILER_FLAG

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

Merge pull request #30893 from smithfarm/wip-41964-mimic

mimic: tools/rados: list objects in a pg

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

Merge pull request #30898 from smithfarm/wip-42128-mimic

mimic: osd/OSDMap: do not trust partially simplified pg_upmap_item

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

Merge pull request #30903 from smithfarm/wip-42154-mimic

mimic: mon/OSDMonitor: trim not-longer-exist failure reporters

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

Merge pull request #30924 from vumrao/wip-vumrao-42240

mimic: osd/PG: Add PG to large omap log message

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

Merge pull request #30846 from wido/mimic-42116

mimic: mgr/telemetry: Ignore crashes in report when module not enabled

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

Merge pull request #30895 from smithfarm/wip-42036-mimic

mimic: osd/PeeringState: recover_got - add special handler for empty log

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

Merge pull request #30901 from smithfarm/wip-42137-mimic

mimic: osd: Remove unused osdmap flags full, nearfull from output

Reviewed-by: David Zafman <dzafman@redhat.com>
Reviewed-by: Kefu Chai <kchai@redhat.com>
Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>

Merge pull request #30916 from smithfarm/wip-41457-mimic

mimic: osd: merge replica log on primary need according to replica log's crt

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

Merge pull request #30982 from tchaikov/wip-mimic-42362

mimic: build/ops: python3-cephfs should provide python36-cephfs

Reviewed-by: Nathan Cutler <ncutler@suse.com>

Merge pull request #30991 from smithfarm/wip-37520-mimic-revert

mimic: msg: Revert "msg/async: do not trigger RESETSESSION from connect fault during connection phase"

Reviewed-by: Ricardo Dias <rdias@suse.com>
Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>

Revert "ceph_volume_client: make UTF-8 encoding explicit"

This reverts commit ddb8cfa072cc19fb6cb61128b4fe4b8ffe1a1742.

Signed-off-by: Nathan Cutler <ncutler@suse.com>

Revert "pybind/ceph_volume_client: allow volume_client to"

This reverts commit 1ab18fcf056ef8e4fcb9ed27e64ee4f8a75866dc.

Signed-off-by: Nathan Cutler <ncutler@suse.com>

Revert "ceph_volume_client: convert string to bytes object"

This reverts commit e081e97190b58d3a09377275f6d484bf9020fe51.

Signed-off-by: Nathan Cutler <ncutler@suse.com>

Revert "ceph_volume_client: don't convert None to str object"

This reverts commit e085982def42738d181240c7b6e97b30f6bc0cf8.

Signed-off-by: Nathan Cutler <ncutler@suse.com>

mds: check last laggy before marking unresponsive client stale

Current mds may evict unresponsive client without going through session
stale. So we need to adjust the last laggy check.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit e5cc6f52feb64fa1c7ba1ee2b304cd6588f16e7a)

 Conflicts:
src/mds/Server.cc

mds: remove the code that skip evicting the only client

There is already logic that defer marking unresponsive client stale.
No reason to defer evicting the only stale client.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit cd29206974427a4f6ab410b1482bbd8ebfb55fbd)

 Conflicts:
qa/tasks/cephfs/test_misc.py

qa/cephfs: update tests for stale session handling

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit 1c8be588e32f47ca712561711ad1ffdddc54b330)

 Conflicts:
qa/tasks/cephfs/test_client_recovery.py

mds: change how mds revoke stale caps

- Only revokes conflicting caps from stale client.
- If stale client holds conflicting CEPH_CAP_ANY_WR,
  blacklist and kill it.

Fixes: https://tracker.ceph.com/issues/38326
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit dcae1ea2d30398f7b6493a74b482e964a21fcfeb)

 Conflicts:
src/mds/CInode.cc
src/mds/Capability.cc
src/mds/Locker.cc
src/mds/MDSRank.h
src/mds/Server.cc

mds: don't mark unresponsive sessions holding no caps stale

When an unresponsive MDS session holds no caps, do not mark it stale
even after session_timeout; at session_autoclose, evict it directly.

Fixes: http://tracker.ceph.com/issues/17854
Signed-off-by: Rishabh Dave <ridave@redhat.com>
(cherry picked from commit 98af31d10f362c05ea8ed57495973b08599431e7)

 Conflicts:
src/mds/Server.cc

mds: optimize resuming stale caps

If client doesn't want any cap, there is no need to re-issue stale
caps.

A special case is that client wants some caps, but skipped updating
'wanted'. For this case, client needs to update 'wanted' when stale
session get renewed.

Fixes: http://tracker.ceph.com/issues/38043
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit e824b3d2024db36789fdf579f0af9bf3bbe55d51)

 Conflicts:
src/client/Client.cc
src/mds/cephfs_features.h

client: avoid unnecessary wakeup when handling RENEWCAPS

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit c744bc1673ca0b4e50f41516fdf49c8560db073a)

client: don't wakeup cap waiters twice when mds recovered

Both kick_maxsize_requests() and wake_inode_waiters() wake up cap
waiters

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit 5993a93e606d23ef311831863444294d7c64cc04)

 Conflicts:
src/client/Client.cc
src/client/Client.h

client: set cap->wanted when adding new cap

This avoids unnecessary cap message if cap is added by open/create
request reply.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit 314660a46a8a1af97f70b2bac05b2f6fa5d23bc4)

 Conflicts:
src/client/Client.h

mds: optimize revoking stale caps

For caps that are not being revoked and don't have writeable range
and don't want exclusive caps or file read/write. there is no need
to call Locker::revoke_stale_caps(Capability*). Because these caps
don't need recover and don't affect eval_gather()/try_eval().

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit cb62030f0468fc04735c1b4cff73da779cb11ad8)

 Conflicts:
src/mds/CInode.cc
src/mds/Capability.h
src/mds/Locker.cc
src/mds/Migrator.cc

mds: put notable caps at the front of session's caps list

Notable Capabilities are ones that are being revoked, ones that
have writeable ranges and ones that want exclusive caps or want
file read/write.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit cb6e7184458e64720ad83c266e5e393a80c32697)

mds: track if client has writeable range in Capability

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit 370ae1cb3e5dc07867d80e998082bc514e8fccfd)

 Conflicts:
src/mds/Locker.cc
src/mds/MDCache.h
src/mds/Server.cc

mds: add session pointer to Capability

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit 7c628472a86c6acebb20f0a2504744b10f250587)

 Conflicts:
src/mds/CInode.cc
src/mds/Capability.h
src/mds/Locker.cc

client: sync 'retain caps' logical from kernel client

The main change is keeping CEPH_CAP_ANY_RD for unused file inodes

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit 29034396398b1706db625e1abf2e6682be7130a5)

client: skip updating 'wanted' caps if caps are already issued

When reading cached inode that already has Fscr caps, this can avoid
two cap messages (one updats 'wanted' caps, one clears 'wanted' caps).

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit d20b260ecf3f323c87ad1e6865f87e2381444546)

osd mon mgr: Changes for rebase and correction for this branch

Fix use of asok_command() which doesn't do try/catch
Need unregister_command() since unregister_commands() doesn't exist here
Use Mutex::locker since lock_guard() isn't available
Use new g_conf which isn't g_conf() anymore
cct->_conf is a pointer now
Use ceph_abort() because cct isn't available for ceph_abort_msg()

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

test: Ignore OSD_SLOW_PING_TIME* if injecting socket failures

Fixes: https://tracker.ceph.com/issues/41743
Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit ded58ef91d6c8a68de49fa2c6b6e01636515c59b)

Conflicts: 3 yamls don't exist in Mimic

test: Allow fractional milliseconds to make test possible

Fixes: https://tracker.ceph.com/issues/41689
Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 6d2e4cb109caff8dae5e5e18563b6305131b488b)

doc: Document network performance monitoring

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 71015b94abdf669695754a598a05a4a1c5d46f83)

Conflicts:
doc/rados/operations/monitoring.rst (trivial)

osd doc mon mgr: To milliseconds for config value, user input and threshold out

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 5f83a6158b29944cf8f5a069c50edba3e172cdcc)

Conflicts:
src/common/options.cc (trivial)

osd mon mgr: Convert all network ping time output to milliseconds

To output milliseconds (usec / 1000), treat as fixed point integers

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 9d02e5d39d7b5e2806a5d98bdde24f4584e70528)

Conflicts:
src/mon/PGMap.cc (trivial)

common: Add support routines to generate strings for fixed point

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 8ac1562b4988fc3d52f92f15eb58075de0bcf27e)

Conflicts:
src/common/Formatter.h (trivial)

test: Add basic test for network ping tracking

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 4fb42ea27e7b6acefd081b7b287d38347a6085ce)

osd: Add debug_heartbeat_testing_span to allow quicker testing

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 573aea2bb1d48237df5182a6e4421e15c1eea88c)

osd: Add debug_disable_randomized_ping config for use in testing

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit f2b26d88f0a0727f0362ccd8b287f8bb3f41dc3c)

Conflicts:
src/osd/OSD.cc (trivial)
src/common/options.cc (trivial)

osd mgr: Add osd_mon_heartbeat_stat_stale option to time out ping info
after 1 hour

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 048f8096265dd3a647adb970255e4b11c9617b2e)

Conflicts:
src/osd/OSD.cc (trivial)

mon: Indicate when an osd with slow ping time is down

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 5ab145d6402a2525d69296de95b36214bc4c7431)

osd mon: Add last_update to osd_stat_t heartbeat info

Ignore old heartbeat info which hasn't updated

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit ea20d3522aaf644cef989c565e11dd781e420e18)

Conflicts:
src/osd/osd_types.h (osd_stat_t location in file changed)

osd: After first interval populate vectors so 5min/15min values aren't 0

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 6555699d289769a44e9840424192a1be1a6ba00d)

osd mgr: Store last pingtime for possible graphing

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 3f846d7c806b7f62ead08f0e9fb2ba927ffe0592)

Conflicts:
src/osd/osd_types.h (osd_stat_t location in file changed)

osd mgr: Add minimum and maximum tracking to network ping time

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 297a0e7b1de410c094fc9a6e42be14813d6dac5e)

Conflicts:
src/osd/osd_types.cc (trivial)
src/osd/osd_types.h (osd_stat_t location in file changed)

doc: Add documentation and release notes

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit f4a0be2e8707f921d65bf22a6c1090e402905ad3)

Conflicts:
PendingReleaseNotes (trivial)

osd mgr mon: Add mon_warn_on_slow_ping_ratio config as 5% of osd_heartbeat_grace

Compute network ping threshold based on ratio (5% of 20 seconds is 1 second)
Make the threshold value used part of dump_osd_network for osd and mgr
Keep mon_warn_on_slow_ping_time (default 0) to optionally override the ratio

Signed-off-by: David Zafman <dzafman@redhat.com>
(cherry picked from commit 0d1bbd34e96e2da2027861229b376805d5ea8aa6)