On Tue, Mar 6, 2018 at 6:43 AM, Wyllys Ingersoll <wyllys.ingersoll@xxxxxxxxxxxxxx> wrote: > Under Luminous 12.2.4 (with filestore OSDs), listing images on an > erasure-coded pool results in the command hanging and never returning. > > Ex: > $ ceph osd pool create ectest 32 32 erasure default > $ ceph osd pool create ectest-cache 32 32 > $ ceph osd tier add ectest ectest-cache > $ ceph osd tier cache-mode ectest-cache writeback > $ ceph osd tier set-overlay ectest ectest-cache > $ ceph osd pool application enable ectest rbd > $ rbd -p ectest ls > ... (never returns )... > > $ rbd create ectest/foobar --size 5G > ... (never returns) .... > > The monitor logs do not show any errors while these operations are hanging > > This same set of steps worked under Jewel. Is there something new in > Luminous that needs to be done? Even if I am doing this wrong, the > command should return an error at some point and not just hang > indefinitely. This is weird but I wonder if the rbd tooling changed because it now supports EC pools natively, rather than requiring use of a cache pool. Or rather, I'm sure it did change; I wonder if it managed to break the use of cache pools by doing so. I'd investigate that direction. And see if you're better off now just using them directly without having to tune the cache size! :) -Greg -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
