This call trace doesn't look familiar to me, but 2.6.38 is pretty old and I know there have been a number of kernel fixes for when servers change lately. I'd recommend trying out a newer kernel and seeing if you can reproduce the problem. :) -Greg On Sun, Jul 1, 2012 at 9:17 AM, Henry C Chang <henry.cy.chang@xxxxxxxxx> wrote: > Hi list, > > I got this kernel BUG (see attached image file) when I stopped the > active mds and the standby one took over. Since my client is on Ubuntu > natty (2.6.38), I'd like to know if this bug has been fixed in the > latest kernel or anyone has seen this before? > > Thanks, > Henry -- 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