On Mon, Jan 30, 2017 at 4:06 PM, Kent Borg <kentborg@xxxxxxxx> wrote: > I have been playing with the Python version of librados and am getting > startling answers from get_stats() on a pool. I am seeing 'num_objects' as > zero at a point where I am expecting one. But if I loop, waiting for my > expected one, I will get it in a second or so. > > I think I created this object with a synchronous write() but I sprinkled > aio_flush() calls in my code for good measure, still have the same problem. > > My code is single threaded and the only code running against this cluster. > Why would I get a delayed answer? Pool stats are not synchronous -- when you call get_stats it is not querying every OSD in the system before giving you a response. The OSDs send periodic stats reports about their PGs to the monitor, and the stats you're getting are whatever was the most recent data on the mon. John > Another hint: the pool has been freshly created by my same script, and I > notice that pool creation and deletion is slow...is there some explicit wait > I should do after creating a pool before using it? > > Thanks, > > -kb > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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