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* refs/pull/20903/head: PendingReleaseNotes: add note about upgrading MDS Reviewed-by: Zheng Yan <zyan@redhat.com>
102 lines
4.0 KiB
Plaintext
102 lines
4.0 KiB
Plaintext
13.0.1
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------
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* *CephFS*:
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* Upgrading an MDS cluster to 12.2.3+ will result in all active MDS
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exiting due to feature incompatibilities once an upgraded MDS comes online
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(even as standby). Operators may ignore the error messages and continue
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upgrading/restarting or follow this upgrade sequence:
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Reduce the number of ranks to 1 (`ceph fs set <fs_name> max_mds 1`),
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deactivate all other ranks (`ceph mds deactivate <fs_name>:<n>`), shutdown
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standbys leaving the one active MDS, upgrade the single active MDS, then
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upgrade/start standbys. Finally, restore the previous max_mds.
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See also: https://tracker.ceph.com/issues/23172
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* Several "ceph mds" commands have been obsoleted and replaced
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by equivalent "ceph fs" commands:
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- mds dump -> fs dump
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- mds getmap -> fs dump
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- mds stop -> mds deactivate
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- mds set_max_mds -> fs set max_mds
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- mds set -> fs set
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- mds cluster_down -> fs set cluster_down true
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- mds cluster_up -> fs set cluster_down false
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- mds add_data_pool -> fs add_data_pool
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- mds remove_data_pool -> fs rm_data_pool
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- mds rm_data_pool -> fs rm_data_pool
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* New CephFS file system attributes session_timeout and session_autoclose
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are configurable via `ceph fs set`. The MDS config options
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mds_session_timeout, mds_session_autoclose, and mds_max_file_size are now
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obsolete.
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* *RBD*
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* The RBD C API's rbd_discard method now enforces a maximum length of
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2GB to match the C++ API's Image::discard method. This restriction
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prevents overflow of the result code.
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* The rbd CLI's "lock list" JSON and XML output has changed.
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* The rbd CLI's "showmapped" JSON and XML output has changed.
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* RBD now optionally supports simplified image clone semantics where
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non-protected snapshots can be cloned; and snapshots with linked clones
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can be removed and the space automatically reclaimed once all remaining
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linked clones are detached. This feature is enabled by default if
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the OSD "require-min-compat-client" flag is set to mimic or later; or can be
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overridden via the "rbd_default_clone_format" configuration option.
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* The sample ``crush-location-hook`` script has been removed. Its output is
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equivalent to the built-in default behavior, so it has been replaced with an
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example in the CRUSH documentation.
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* The "rcceph" script (systemd/ceph in the source code tree, shipped as
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/usr/sbin/rcceph in the ceph-base package for CentOS and SUSE) has been
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dropped. This script was used to perform admin operations (start, stop,
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restart, etc.) on all OSD and/or MON daemons running on a given machine.
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This functionality is provided by the systemd target units (ceph-osd.target,
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ceph-mon.target, etc.).
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* The python-ceph-compat package is declared deprecated, and will be dropped
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when all supported distros have completed the move to Python 3. It has
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already been dropped from those supported distros where Python 3 is standard
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and Python 2 is optional (currently only SUSE).
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* The -f option of the rados tool now means "--format" instead of "--force",
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for consistency with the ceph tool.
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>= 13.0.2
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---------
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The ceph-rest-api command-line tool (obsoleted by the MGR "restful" module and
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deprecated since v12.2.5) has been dropped.
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There is a MGR module called "restful" which provides similar functionality
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via a "pass through" method. See http://docs.ceph.com/docs/master/mgr/restful
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for details.
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>= 12.2.5
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---------
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The ceph-rest-api command-line tool included in the ceph-mon package has been
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obsoleted by the MGR "restful" module. The ceph-rest-api tool is hereby
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declared deprecated and will be dropped in Mimic.
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The MGR "restful" module provides similar functionality via a "pass through"
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method. See http://docs.ceph.com/docs/luminous/mgr/restful for details.
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13.0.2
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------
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* The format of the 'config diff' output via the admin socket has changed. It
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now reflects the source of each config option (e.g., default, config file,
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command line) as well as the final (active) value.
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