Commits on Aug 23, 2021

1. mds: handle rctime updates for snaps …

   Conditionally update snap rctime only if snap btime is greater than new
   rctime.
   
   If snapshots are taken frequently when lazyio is being used, then the
   rctime may not be updated for the snapshot for which the capabilities
   are flushed by the client, but a subsequent snapshot. This is due to
   the fact that this patch assumes that all relevant data writes have
   been persisted to the OSDs and caps flushed to the MDS before the
   snapshot is taken.
   
   To avoid skipping a snapshot or two for correct rctime updates to
   snapshot directories, the client should wait for at least twice the
   client_oc_max_dirty_age duration before creating the snapshot dir.
   
   Fixes: https://tracker.ceph.com/issues/50238
   Signed-off-by: Milind Changire <mchangir@redhat.com>

   

   mchangir committed Aug 23, 2021
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