Some questions about maps and epochs: I see that I can control the minimum number of osdmap epochs to keep with "mon min osdmap epoch". Why do I care? Why would I want any but the current osdmap, and why would the system keep more than my minimum? Similarly, "mon max pgmap epoch" controls the _maximum_ number of pgmap epochs to keep around. I believe I need more than the most recent pgmap because I need to keep previous ones until all PGs that were placed according to that pgmap have migrated to where the current pgmap says they should be. But do I need more epochs than that, and what happens if the maximum I set is too low to cover those necessesary old pgmaps? -- Bryan Henderson San Jose, California _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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