Just noticed email subject "qemu-1.4.0 and onwards, linux kernel 3.2.x, ceph-RBD, heavy I/O leads to kernel_hung_tasks_timout_secs message and unresponsive qemu-process, [Qemu-devel] [Bug 1207686]" where Sage noted that he has seen a completion called twice in the logs the OP posted. If that is actually happening (and not just an artefact of logging ring buffer overflowing or something) then I think that could easily cause a segfault in tapdisk rbd.
I'll try and see if I can log when that happens. James > -----Original Message----- > From: Sylvain Munaut [mailto:s.mun...@whatever-company.com] > Sent: Tuesday, 13 August 2013 7:20 PM > To: James Harper > Cc: Pasi Kärkkäinen; ceph-devel@vger.kernel.org; xen-de...@lists.xen.org > Subject: Re: [Xen-devel] Xen blktap driver for Ceph RBD : Anybody wants to > test ? :p > > Hi, > > > I hope not. How could I tell? It's not something I've explicitly enabled. > > It's disabled by default. > > So you'd have to have enabled it either in ceph.conf or directly in > the device path in the xen config. (option is 'rbd cache', > http://ceph.com/docs/next/rbd/rbd-config-ref/ ) > > Cheers, > > Sylvain -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
