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Description of problem:

Currently metadata size is hardcoded to VG_SIZE/1000+1, or roughly 1% of the total size. There are cases with large VGs for docker storage where the metadata space goes beyond the 90% threshold while there is still space in the data lv.

If the VG has already become full, there is no way to expand the metadata lv.

This option would give users a way to specify a value metadata during docker-storage-setup.

Version-Release number of selected component (if applicable):
N/A

How reproducible:
RFE

Actual results:
When running out of metadata space, you can no longer schedule containers on a node.

Expected results:
Give users a way to set metadata without how to manually extend the LV after running docker-storage-setup


Additional info:

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.

https://access.redhat.com/errata/RHBA-2017:2965