[Whoops, resending as plain text to make vger happy.] On Fri, Jun 1, 2012 at 2:35 AM, Amon Ott <a.ott@xxxxxxxxxxxx> wrote: > Thanks for the new log lines in master git. The warning without syncfs() > support could be a bit more clear though - the system is not only slower, it > hangs needing a reset and reboot. This is much worse, specially if cephfs is That warning, introduced in https://github.com/ceph/ceph/commit/07498d66233f388807a458554640cb77424114c0 , is more about running multiple OSDs on a single server, and without syncfs(2) one OSD syncing causes all to sync. It's not related to your case of loopback mounting, what has *never* worked well, with the apparent exception of ceph-fuse > say that syncfs() makes it significantly more stable than sync(). We will > make a several day load test soon. That still won't make it reliable, just less likely to trigger. Good luck, you'll need it with loopback mounts. -- 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