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Merge PR #24562 into master 

* refs/pull/24562/head:
	removed warning for resolved errata

Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
This commit is contained in:
Patrick Donnelly 2018-10-15 14:34:21 -07:00
parent 929a9201c8 9352899618
commit 28b9b4ea2b
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@ -14,7 +14,6 @@ amitkumar50 Amit Kumar <amitkuma@redhat.com>
athanatos Samuel Just <sjust@redhat.com>
badone Brad Hubbard <bhubbard@redhat.com>
bassamtabbara Bassam Tabbara <bassam.tabbara@quantum.com>
batrick Patrick Donnelly <pdonnell@redhat.com>
branch-predictor Piotr Dałek <piotr.dalek@corp.ovh.com>
callithea Laura Paduano <lpaduano@suse.com>
capri1989 Kai Wagner <kwagner@suse.com>
@ -83,3 +82,4 @@ vshankar Venky Shankar <vshankar@redhat.com>
adamemerson Adam C. Emerson <aemerson@redhat.com>
myoungwon Myoungwon Oh <omwmw@sk.com>
dillaman Jason Dillaman <dillaman@redhat.com>
batrick Patrick Donnelly <pdonnell@redhat.com>

7
doc/cephfs/cache-size-limits.rst
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@ -13,10 +13,3 @@ In addition, you can specify a cache reservation by using the `mds_cache_reserva
The `mds_cache_reservation` parameter replaces the `mds_health_cache_threshold` in all situations except when MDS nodes sends a health alert to the Monitors indicating the cache is too large. By default, `mds_health_cache_threshold` is 150% of the maximum cache size.
Be aware that the cache limit is not a hard limit. Potential bugs in the CephFS client or MDS or misbehaving applications might cause the MDS to exceed its cache size. The `mds_health_cache_threshold` configures the cluster health warning message so that operators can investigate why the MDS cannot shrink its cache.
.. warning::
The memory tracking used is currently imprecise by a constant factor. This
will be addressed in http://tracker.ceph.com/issues/22599. MDS deployments
with large `mds_cache_memory_limit` (64GB+) should underallocate RAM to
accommodate.