Description of problem:
When the MDS is doing a significant shrink of a large cache, e.g. 96GB -> 64GB, the MDS will spin trying to trim cached objects and asking clients to recall caps. The monitors will remove the MDS because it's missing heartbeat beacons.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Create a file system and fill it with ~10 million files. Then have 4-5 clients load those files into memory.
2. Reduce the MDS cache using the `config set` admin socket command.
MDS will be removed from the MDSMap and a standby will take over.
The MDS slowly reduces its cache without service interruption.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.