On Tue, Jan 29, 2019 at 7:12 AM Yan, Zheng <ukernel@xxxxxxxxx> wrote:
Looks like you have 5 active mds. I suspect your issue is related to
load balancer. Please try disabling mds load balancer (add
"mds_bal_max = 0" to mds section of ceph.conf). and use 'export_pin'
to manually pin directories to mds
(https://ceph.com/community/new-luminous-cephfs-subtree-pinning/)
This seems unclear from the documentation I've reviewed, but what happens to directories that are not manually pinned if the load balancer is disabled? The busiest directories are static (with changing contents, of course) and will be pretty easy to distribute amongst the mds with pinning, but then there are a handful of other directories that exist, some of which are created or destroyed at different times.
jonathan
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