> If I'm reading it correctly his cmdline says cache=none for the rbd device, > so there should be no writeback caching: > > file=rbd:Primary-ubuntu-1/c3f90fb4-c1a6-4e99-a2c0-64ae4517412e:id=admin:key=AQDiDbJR2GqPABAAWCcsUQ+UQwK8z9c6LWrizw==:auth_supported=cephx\;none:mon_host=ceph-mon.csprdc.arhont.com\:6789,if=none,id=drive-virtio-disk0,format=raw,cache=none > > If that's actually overriden by ceph.conf setting then that is another bug I > guess :-) > > Jan There was a bug in qemu which resulted in ceph.conf config properties overwriting your qemu command-line properties [1]. If you have "rbd cache = true" in your ceph.conf, it would override "cache=none" in your qemu command-line. [1] https://lists.nongnu.org/archive/html/qemu-devel/2015-06/msg03078.html -- Jason Dillaman _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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