Hi, While experimenting with key value backend store we are hitting the assert in OSDService::get_map during one of the OSD start time. Can you please help us in understanding 1. What is the reason to hit this assert 2. Is there anyway I can work around so that I can bring my OSD back without losing the data. We have setup the CEPH cluster with 2 nodes, 10 OSDs per node and we are using 0.91 version. 0> 2015-02-24 16:45:48.407399 7fac29954980 -1 *** Caught signal (Aborted) ** in thread 7fac29954980 ceph version 0.91 (725d66098c98c2008b5fa07538325cc6816ca4a1) 1: /usr/bin/ceph-osd() [0xb06e05] 2: (()+0xf130) [0x7fac27a1c130] 3: (gsignal()+0x39) [0x7fac264325c9] 4: (abort()+0x148) [0x7fac26433cd8] 5: (__gnu_cxx::__verbose_terminate_handler()+0x175) [0x7fac26d36de5] 6: (()+0x5de36) [0x7fac26d34e36] 7: (()+0x5de81) [0x7fac26d34e81] 8: (()+0x5e099) [0x7fac26d35099] 9: (ceph::__ceph_assert_fail(char const*, char const*, int, char const*)+0x269) [0xbfe439] 10: (OSDService::get_map(unsigned int)+0x3f) [0x6e1eaf] 11: (OSD::load_pgs()+0x1b78) [0x69db98] 12: (OSD::init()+0xc6f) [0x69f8bf] 13: (main()+0x26b9) [0x624d29] 14: (__libc_start_main()+0xf5) [0x7fac2641eaf5] 15: /usr/bin/ceph-osd() [0x63ee19] Thanks, Srini -- 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