librbd: don't temporarily shut down crypto when flattening

(Temporarily) shutting down crypto can lead to data corruption in the
face of concurrent I/O, especially when flatten operation is proxied to
the remote lock owner.  This was added to be able to read, optionally
modify and write crypto header without it being subjected to remapping
and encryption itself.  read_header() and write_header() now achieve
that by specifying CRYPTO_HEADER area explicitly.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

librbd: move get_file_offset() into CryptoObjectDispatch

This method doesn't propagate area.  Since its only user is
CryptoObjectDispatch which is now applied only to DATA area,
move get_file_offset() there to avoid misuse in the future.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

librbd: apply CryptoObjectDispatch layer only to DATA area

Objects in CRYPTO_HEADER area should not be subjected to encryption.
Unit tests needed adjustment because MockCryptoInterface is configured
with DATA_OFFSET = 4 * 1024 * 1024, thus disqualifying object 0.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

librbd: propagate area down to file_to_extents()

- readahead and PWL cache are limited to DATA area as explained in
  the previous commit
- DATA area is assumed for the journal as encryption can't be used
  with journaling anyway

To postpone the churn associated with passing area through
ImageDispatchInterface (where only WriteLogImageDispatch and
ImageDispatch care), add a new image dispatch flag.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

librbd: pass area to ImageDispatchSpec::create_*()

- DATA area is assumed at the API layer as there is no way to pass
  an area
- DATA area is assumed by ImageWriteback because PWL cache persists
  image extents as provided by the user without any kind of designator
  and therefore can be active only in either area
- luks::FlattenRequest operates on CRYPTO_HEADER area

The passed area is acted upon in ImageDispatchSpec constructor in the
next commit.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

librbd: return area from extents_to_file()

Note that, as suggested by extents_to_file() signature, all returned
image extents would pertain to the same area.  This means that an area
boundary must coincide with an object boundary.

luks::FormatRequest is actually more strict: crypto header area size is
set to a multiple of stripe period (i.e. one or more whole objects).

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

librbd: introduce ImageArea and split remap_extents() into two methods

Since remap in either direction can really be done only once, iterating
through image dispatch layers in ImageDispatcher::remap_extents() makes
no sense.  For now, just replace the iteration with CryptoImageDispatch
lookup.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

librbd: pass image_extents to create_{discard,write_same}()

These are still taking off and len separately which is inconsistent
with the rest of ImageDispatchSpec and also ImageDiscardRequest and
ImageWriteSameRequest.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

librbd: CopyupRequest can move image_extents instead of copying

image_extents is already taken by rvalue reference.
CopyupRequest::create() callers are prepared for the move.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

Merge pull request #49217 from zdover23/wip-doc-2022-12-04-rados-ops-health-check-5-of-5-prompts

doc/rados: add prompts to health-checks (5 of 5)

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

Merge pull request #49216 from zdover23/wip-doc-2022-12-04-rados-ops-health-check-4-of-5-prompts

doc/rados: add prompts to health-checks (4 of 5)

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

Merge pull request #49215 from zdover23/wip-doc-2022-12-04-rados-ops-health-check-3-of-5-prompts

doc/rados: add prompts to health-checks (3 of 5)

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

Merge pull request #49214 from zdover23/wip-doc-2022-12-04-rados-ops-health-chech-2-of-5-prompts

doc/rados: add prompts to health-checks (2 of 5)

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

Merge pull request #49213 from zdover23/wip-doc-2022-12-04-rados-ops-health-chech-1-of-4-prompts

doc/rados: add prompts to health-checks (1 of 5)

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

Merge pull request #49212 from zdover23/wip-doc-2022-12-04-rados-ops-erasure-code-shec-prompts

doc/rados: add prompts to erasure-code-shec.rst

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

Merge pull request #49211 from zdover23/wip-doc-2022-12-04-rados-ops-erasure-code-erasure-code-lrc-prompts

doc/rados: add prompts to erasure-code-lrc.rst

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

doc/rados: add prompts to health-checks (5 of 5)

Add unselectable prompts to doc/rados/operations/health-checks.rst,
fifth 300 lines.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to health-checks (4 of 5)

Add unselectable prompts to doc/rados/operations/health-checks.rst,
fourth 300 lines.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to health-checks (3 of 5)

Add unselectable prompts to doc/rados/operations/health-checks.rst,
third 300 lines.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to health-checks (2 of 5)

Add unselectable prompts to doc/rados/operations/health-checks.rst,
second 300 lines.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to health-checks (1 of 5)

Add unselectable prompts to doc/rados/operations/health-checks.rst,
first 300 lines.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to erasure-code-shec.rst

Add unselectable prompts to doc/rados/operations/erasure-code-shec.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to erasure-code-lrc.rst

Add unselectable prompts to doc/rados/operations/erasure-code-lrc.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #49202 from zdover23/wip-doc-2022-12-01-rados-ops-erasure-code-jerasure-prompts

doc/rados: add prompts to erasure-code-jerasure.rst

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

Merge pull request #49201 from zdover23/wip-doc-2022-12-01-rados-ops-erasure-code-isa-prompts

doc/rados: add prompts to erasure-code-isa

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

Merge pull request #49200 from zdover23/wip-doc-2022-12-01-rados-ops-erasure-code-clay-prompts

doc/rados: add prompts to erasure-code-clay.rst

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

Merge pull request #49162 from Gaoweinan/main-rgw-rgwerror-StatementRepetition-gaoweinan

radosgw:Fix repeated statement

Reviewed-by: Daniel Gryniewicz <dang@redhat.com>

doc/rados: add prompts to erasure-code-jerasure.rst

Add unselectable prompts to
doc/rados/operations/erasure-code-jerasure.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to erasure-code-isa

Add unselectable prompts to doc/rados/operations/erasure-code-isa.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to erasure-code-clay.rst

Add unselectable prompts to doc/rados/operations/erasure-code-clay.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #48549 from pkalever/snap-list

cls/rbd: update last_read in group::snap_list

Reviewed-by: Mykola Golub <mgolub@suse.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>

Merge pull request #49177 from yuvalif/remove-pubsub-release-notes

rgw: update release notes on the removal of pubsub

Merge pull request #49052 from tchaikov/wip-fmt-v9

*: include fmt/ostream.h if FMT_VERSION >= 9

Reviewed-by: Tim Serong <tserong@suse.com>

Merge pull request #49185 from zdover23/wip-doc-2022-12-01-rados-ops-devices-prompts

doc/rados: add prompts to devices.rst

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

doc/rados: add prompts to devices.rst

Add unselectable prompts to doc/rados/operations/devices.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #49182 from zdover23/wip-doc-2022-12-01-rados-ops-crush-map-prompts

doc/rados: add prompts to crush-map.rst

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

doc/rados: add prompts to crush-map.rst

Add unselectable prompts to doc/rados/operations/crush-map.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #48838 from badone/wip-ceph-ansible-suite-nightlies-disable

qa/tests: Remove octopus ceph-ansible tests

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

rgw: update release notes on the removal of pubsub

Signed-off-by: yuval Lifshitz <ylifshit@redhat.com>

Merge pull request #48609 from cbodley/wip-rgw-encrypt-compress-release-note

PendingReleaseNotes: add note for rgw compression+encryption

Reviewed-by: Yuval Lifshitz <ylifshit@redhat.com>

PendingReleaseNotes: add note for rgw compression+encryption

adds release notes for the feature added in
https://github.com/ceph/ceph/pull/46188

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

Merge pull request #48996 from yuvalif/wip-yuval-remove-pubsub

remove pubsub from the RGW

Reviewed-by: Casey Bodley <cbodley@redhat.com>
Reviewed-by: Daniel Gryniewicz <dang@redhat.com>
Reviewed-by: Ronen Friedman <rfriedma@redhat.com>

Merge pull request #49167 from zdover23/wip-doc-2022-12-01-cephadm-upgrade-warning-removal

doc/cephadm - remove "danger" admonition

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

doc/cephadm - remove "danger" admonition

Remove the "Danger!" admonition that warned against upgrading to Pacific
from an older version of Ceph. That admonition was meant to protect
against the issue discussed here: https://tracker.ceph.com/issues/53062.
That issue was fixed in this PR:
https://github.com/ceph/ceph/pull/43793.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #49161 from zdover23/wip-doc-2022-12-01-cephadm-host-management-grammar

doc/cephadm: improve grammar in "listing hosts"

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

Merge pull request #48930 from joscollin/wip-replace-isinstance-current-screen

cephfs-top: replace isinstance call with current_screen variable

Reviewed-by: Neeraj Pratap Singh <neesingh@redhat.com>

Merge pull request #49041 from joscollin/wip-reset-filters-nofs

cephfs-top: reset filters when no fs

Reviewed-by: Dhairya Parmar <dparmar@redhat.com>
Reviewed-by: Neeraj Pratap Singh <neesingh@redhat.com>

Merge pull request #49160 from Gaoweinan/main-doc-docerror-radosgw-gaoweinan

doc/radosgw:Fix index error

radosgw:Fix repeated statement

Fix repeated statement.
There are two statements "using rgw::IAM::s3ListBucket;" in “ceph/src/test/rgw/test_rgw_iam_policy.cc”, it's repeated.

Fix:https://tracker.ceph.com/issues/58135

Signed-off-by: gaoweinan <gaoweinan@inspur.com>

doc/cephadm: improve grammar in "listing hosts"

Improve the grammar in host-management.rst.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/radosgw:Fix index error

Fix index error.There is a sentence in the note of chapter "Pool Placement and storage classes": "If you have not done any previous Multisite Configuration", so it seems that chapter "Multisite Configuration" precedes chapter "Pool Placement and storage classes", but actually chapter "Multisite Configuration" follows chapter "Pool Placement and storage classes" in the index.

Fix:https://tracker.ceph.com/issues/58134

Signed-off-by: gaoweinan <gaoweinan@inspur.com>

Merge pull request #49153 from Gaoweinan/master-doc-docerror-WordRepetition-gaoweinan

doc/radosgw/swift: Fix repeated word

doc/radosgw/swift: Fix repeated word

Fix repeated word in swift API

fix:https://tracker.ceph.com/issues/58124

Signed-off-by: gaoweinan <gaoweinan@inspur.com>

Merge pull request #49156 from zdover23/wip-doc-2022-12-01-cephadm-install-airgap-grammar

doc/cephadm: improve airgapping procedure grammar

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

doc/cephadm: improve airgapping procedure grammar

Improve the grammar of the airgapping procedure.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

rgw/pubsub: remove unnecessary REST abstraction layer

this was used for an already deprecated non s3 API for pubsub
also, some texts changes in docs and error messages

Signed-off-by: Yuval Lifshitz <ylifshit@redhat.com>

rgw/pubsub: remove deprecated pubsub event types

Signed-off-by: Yuval Lifshitz <ylifshit@redhat.com>

rgw/pubsub: remove pusub subscription functionality

Signed-off-by: Yuval Lifshitz <ylifshit@redhat.com>

rgw/pubsub: remove pusub sync module functionality

also update the documentation

Signed-off-by: Yuval Lifshitz <ylifshit@redhat.com>

Merge pull request #48908 from kalebskeithley/ceph-zipper-utils

rgw: refactor selected files for better above- vs below-the-line

Reviewed-by: Daniel Gryniewicz <dang@redhat.com>

Merge pull request #49147 from zdover23/wip-doc-2022-11-30-cephadm-install-airgap-formatting

doc/cephadm: format airgap install procedure

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

doc/cephadm: format airgap install procedure

Format the procedure that explains how to install an airgapped cluster.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #49060 from rhcs-dashboard/accept-cors-dashboard

mgr/dashboard: allow cross origin when the url is set

Reviewed-by: Avan Thakkar <athakkar@redhat.com>
Reviewed-by: Pere Diaz Bou <pdiazbou@redhat.com>

Merge pull request #49143 from zdover23/wip-doc-2022-11-30-44346-update

doc/cephadm: add airgapped install procedure

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>

doc/cephadm: add airgapped install procedure

Add a procedure describing an installation with an airgapped registry.

This commit ingests work done in https://github.com/ceph/ceph/pull/44346
that was abandoned for lo these past eleven months. The PR connected
with this commit supersedes that PR.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #47969 from myoungwon/wip-rbm-integration-step1

crimson/os/seastore: add RBM OOL path

Reviewed-by: Yingxin Cheng <yingxin.cheng@intel.com>
Reviewed-by: Samuel Just <sjust@redhat.com>

Merge pull request #49131 from cbodley/wip-rgw-log-identity-type

rgw: initialize rgw_log_entry::identity_type

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

rgw: refactor selected files for better above- vs below-the-line

Based on https://github.com/ceph/ceph/pull/48272, separate selected methods
into new files for above-the-line vs below-the-line linkage. This is more of
the work to prepare for eventual merging of the loadable module implementation.

"Utility" functions that don't reference the Store are moved, e.g. from
rgw_zone.cc, into the new rgw_zone_utils.cc. Methods in the new *_utils.cc
files are above-the-line.

Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>

rgw: default-initialize delete_multi_obj_op_meta

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

rgw: initialize rgw_log_entry::identity_type

uninitialized identity_type field was causing unit test failures from
check-generated.sh:

**** rgw_log_entry test 2 dump_json check failed ****
   ceph-dencoder type rgw_log_entry select_test 2 dump_json > /tmp/typ-AW7AEODB3
   ceph-dencoder type rgw_log_entry select_test 2 encode decode dump_json > /tmp/typ-0NX4cmLHR
21c21
<     "identity_type": 3599295712
---
>     "identity_type": 2072560864

Fixes: https://tracker.ceph.com/issues/58115
Signed-off-by: Casey Bodley <cbodley@redhat.com>

Merge pull request #49136 from zdover23/wip-doc-2022-11-30-glossary-dashboard-module

doc/glossary: add "Dashboard Module"

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

doc/glossary: add "Dashboard Module"

Define "Dashboard Module" in doc/glossary.rst.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #49133 from zdover23/wip-doc-2022-11-30-glossary-rados-cluster

doc/glossary: add "RADOS Cluster"

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

doc/glossary: add "RADOS Cluster"

Define "RADOS Cluster" in the glossary.

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #48682 from Matan-B/wip-matanb-obc-loader

crimson/osd: Introduce ObjectContextLoader

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

Merge pull request #48831 from rzarzynski/wip-crimson-list_snaps-fix-errmsg

crimson/osd: fix error msg in OpsExecuter::do_list_snaps()

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

Merge pull request #48527 from rzarzynski/wip-crimson-simpler-cloning

crimson/osd: simplify cloning

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

Merge pull request #49119 from zdover23/wip-doc-2022-11-29-rados-ops-change-mon-elections-prompts

doc/rados: add prompts to change-mon-elections.rst

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

Merge pull request #49120 from zdover23/wip-doc-2022-11-29-rados-ops-control-prompts

doc/rados: add prompts to control.rst

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

Merge pull request #49118 from zdover23/wip-doc-2022-11-29-rados-cache-tiering-prompts

doc/rados: add prompts to cache-tiering.rst

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

Merge pull request #49114 from zdover23/wip-doc-2022-11-29-rados-bluestore-migration-prompts

doc/rados: add prompts to bluestore-migration.rst

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

doc/rados: add prompts to control.rst

Add unselectable prompts to doc/rados/operations/control.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to change-mon-elections.rst

Add unselectable prompts to
doc/rados/operations/change-mon-elections.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #48525 from rhcs-dashboard/fix-PgImbalance-alert

mgr/dashboard: fix CephPGImbalance alert

Reviewed-by: Avan Thakkar <athakkar@redhat.com>
Reviewed-by: Ernesto Puerta <epuertat@redhat.com>
Reviewed-by: Nizamudeen A <nia@redhat.com>
Reviewed-by: Tatjana Dehler <tdehler@suse.com>

Merge pull request #48526 from rhcs-dashboard/fix-cephPoolGrowth-alert

mgr/dashboard: Fix CephPoolGrowthWarning alert

Reviewed-by: Pegonzal <NOT@FOUND>
Reviewed-by: Ernesto Puerta <epuertat@redhat.com>
Reviewed-by: Nizamudeen A <nia@redhat.com>

doc/rados: add prompts to cache-tiering.rst

Add unselectable prompts to doc/rados/operations/cache-tiering.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

doc/rados: add prompts to bluestore-migration.rst

Add unselectable prompts to
doc/rados/operations/bluestore-migration.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

cephfs-top: reset filters when no fs

Signed-off-by: Jos Collin <jcollin@redhat.com>

Merge pull request #49107 from zdover23/wip-doc-2022-11-29-rados-balancer-prompts

doc/rados: add prompts to balancer.rst

Reviewed-by: Cole Mitchell <cole.mitchell@gmail.com>
Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

doc/rados: add prompts to balancer.rst

Add unselectable prompts to doc/rados/operations/balancer.rst.

https://tracker.ceph.com/issues/57108

Signed-off-by: Zac Dover <zac.dover@gmail.com>

Merge pull request #49015 from batrick/meta-doc

doc/cephfs: correct names for fs/meta

Reviewed-by: Venky Shankar <vshankar@redhat.com>
Reviewed-by: Kotresh HR <khiremat@redhat.com>
Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

Merge pull request #48490 from aclamk/wip-aclamk-fix-deferred

[bluestore] Improve deferred write decision

Reviewed-by: Mark Nelson <mnelson@redhat.com>
Reviewed-by: Igor Fedotov <ifedotov@suse.com>

mgr/dashboard: allow cross origin when the url is set

Allow CORS when the cross_origin_url is set in the config opt.

you have to update the cross_origin_url setting with the url of the
requesting entity.

The request needs to have the header `Access-Control-Allow-Origin`
with the origin URL

The url can be set using this command
`ceph config set mgr mgr/dashboard/cross_origin_url
http://localhost:4200`

multiple urls can be set as
`ceph config set mgr mgr/dashboard/cross_origin_url
http://localhost:4200,http://localhost:4201`

If multiple url is provided in the configuration option, then whatever
url is there in the Access-Control-Allow-Origin request header will be
allowed for CORS

Once the URL is set you have to restart the dashboard module to restart
the cherrypy server with the new CORS policies

Fixes: https://tracker.ceph.com/issues/58086
Signed-off-by: Nizamudeen A <nia@redhat.com>

Merge pull request #49053 from tchaikov/wip-crimson-fmt-v9

crimson: various fmt related changes and fixes

Reviewed-by: Yingxin Cheng <yingxin.cheng@intel.com>

Merge pull request #47221 from markhpc/wip-faster-rocksdb

[WIP] kv/RocksDBStore: Improved RocksDB Settings and Tombstone behavior

Merge pull request #48875 from yuvalif/wip-yuval-fix-58014

rgw/notifications: sending metadata in COPY and CompleteMultipartUpload

Merge pull request #49082 from zdover23/wip-doc-2022-11-28-rbd-isci-monitoring-prompts

doc/rbd: add prompts to iscsi-monitoring.rst

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>

Merge pull request #48598 from yuvalif/wip-yuval-fix-57899

rgw/admin/notifications: support admin operations on topics with tenants

Merge pull request #49079 from zdover23/wip-doc-2022-11-28-glossary-ceph-system-remove

doc/glossary: s/Ceph System/Ceph Cluster/

Reviewed-by: Anthony D'Atri <anthony.datri@gmail.com>

doc/rbd: add prompts to iscsi-monitoring.rst

Add unselectable prompts to doc/rbd/iscsi-monitoring.rst.

Signed-off-by: Zac Dover <zac.dover@gmail.com>