On Thu, Dec 19, 2013 at 3:21 PM, Alexandre Oliva <oliva@xxxxxxx> wrote: > For some weird reason I couldn't figure out, after I simultaneously > brought down all components of my ceph cluster and then brought them > back up, the mds wouldn't come back, complaining about a zero-sized > entry in its journal some 8+MB behind the end of the journal. I hadn't > ever got this problem, and it's not entirely unusual for me to restart > all cluster components at once after some configuration change. > I suspect it was caused by bug http://tracker.ceph.com/issues/6458. did you use active + standby mds step ? how quickly did you bring down the osd and mds? Regards Yan, Zheng > Anyway... Long story short, after some poking at the mds journal to see > if I could figure out how to get it back up, I gave up and decided to > use the --reset-journal hammer. Except that it just sat there, never > completing or even getting noticed by the cluster. After a bit of > additional investigation, the following patch was born, and now my > Emperor cluster is back up. Phew! :-) > > > > -- > Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/ > You must be the change you wish to see in the world. -- Gandhi > Be Free! -- http://FSFLA.org/ FSF Latin America board member > Free Software Evangelist Red Hat Brazil Compiler Engineer > -- 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
