ceph/PendingReleaseNotes

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13.0.0
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* The RBD C API's rbd_discard method now enforces a maximum length of
2GB to match the C++ API's Image::discard method. This restriction
prevents overflow of the result code.
* *CephFS*:
* Several "ceph mds" commands have been obsoleted and replaced
by equivalent "ceph fs" commands:
- mds dump -> fs dump
- mds getmap -> fs dump
- mds stop -> mds deactivate
- mds set_max_mds -> fs set max_mds
- mds set -> fs set
- mds cluster_down -> fs set cluster_down true
- mds cluster_up -> fs set cluster_down false
- mds add_data_pool -> fs add_data_pool
- mds remove_data_pool -> fs rm_data_pool
- mds rm_data_pool -> fs rm_data_pool
* New CephFS file system attributes session_timeout and session_autoclose
are configurable via `ceph fs set`. The MDS config options
mds_session_timeout, mds_session_autoclose, and mds_max_file_size are now
obsolete.
* The JSON format of `ceph fs status` and `ceph mds stat` has changed
for the "up" and "info" sections of the mds_map.
>= 12.2.2
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- *CephFS*:
* The CephFS client now catches failures to clear dentries during startup
and refuses to start as consistency and untrimmable cache issues may
develop. The new option client_die_on_failed_dentry_invalidate (default:
true) may be turned off to allow the client to proceed (dangerous!).