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Merge pull request #15847 from jan--f/doc-fix-multimds-cmds

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doc: add allow_multimds and fs_name parameter

Reviewed-by: Yan, Zheng <zyan@redhat.com>
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Sage Weil 2017-08-29 22:19:59 -05:00 committed by GitHub
commit 3cf248c04d
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doc/cephfs/multimds.rst
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@ -32,6 +32,12 @@ how many ranks will be created. The actual number of ranks
in the filesystem will only be increased if a spare daemon is
available to take on the new rank. For example, if there is only one MDS daemon running, and max_mds is set to two, no second rank will be created.
Before ``max_mds`` can be increased, the ``allow_multimds`` flag must be set.
The following command sets this flag for a filesystem instance.
::
# ceph fs set <fs_name> cephfs allow_multimds true --yes-i-really-mean-it
Set ``max_mds`` to the desired number of ranks. In the following examples
the "fsmap" line of "ceph status" is shown to illustrate the expected
result of commands.