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mimic: mds: avoid calling rejoin_gather_finish() two times successively #21952

Merged
merged 2 commits into from May 11, 2018
Merged

mimic: mds: avoid calling rejoin_gather_finish() two times successively #21952

merged 2 commits into from May 11, 2018

Commits on May 11, 2018

  1. mds: avoid calling rejoin_gather_finish() two times successively 

    If MDCache::rejoin_gather is empty and MDCache::rejoins_pending is true
when MDCache::process_imported_caps() calls maybe_send_pending_rejoins()
Both MDCache::rejoin_send_rejoins() and MDCache::process_imported_caps()
may call rejoin_gather_finish().

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Fixes: http://tracker.ceph.com/issues/24047
(cherry picked from commit 0451dae)
    @ukernel @batrick
    ukernel authored and batrick committed May 11, 2018
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  2. mds: tighten conditions of calling rejoin_gather_finish() 

    Handle two cases:
1. mds receives all cache rejoin messages, then receives mdsmap that
   says mds cluster enters rejoining state.
2. when opening undef inodes/dirfrags, other mds restarts.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
(cherry picked from commit 0a38a49)
    @ukernel @batrick
    ukernel authored and batrick committed May 11, 2018
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    6cf1525 View commit details
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