Thanks did you find anything? Am 23.06.2012 um 01:59 schrieb Sam Just <sam.just@xxxxxxxxxxx>: > I am still looking into the logs. > -Sam > > On Fri, Jun 22, 2012 at 3:56 PM, Dan Mick <dan.mick@xxxxxxxxxxx> wrote: >> Stefan, I'm looking at your logs and coredump now. >> >> >> On 06/21/2012 11:43 PM, Stefan Priebe wrote: >>> >>> Does anybody have an idea? This is right now a showstopper to me. >>> >>> Am 21.06.2012 um 14:55 schrieb Stefan Priebe - Profihost >>> AG<s.priebe@xxxxxxxxxxxx>: >>> >>>> Hello list, >>>> >>>> i'm able to reproducably crash osd daemons. >>>> >>>> How i can reproduce: >>>> >>>> Kernel: 3.5.0-rc3 >>>> Ceph: 0.47.3 >>>> FS: btrfs >>>> Journal: 2GB tmpfs per OSD >>>> OSD: 3x servers with 4x Intel SSD OSDs each >>>> 10GBE Network >>>> rbd_cache_max_age: 2.0 >>>> rbd_cache_size: 33554432 >>>> >>>> Disk is set to writeback. >>>> >>>> Start a KVM VM via PXE with the disk attached in writeback mode. >>>> >>>> Then run randwrite stress more than 2 time. Mostly OSD 22 in my case >>>> crashes. >>>> >>>> # fio --filename=/dev/vda1 --direct=1 --rw=randwrite --bs=4k --size=200G >>>> --numjobs=50 --runtime=90 --group_reporting --name=file1; fio >>>> --filename=/dev/vda1 --direct=1 --rw=randwrite --bs=4k --size=200G >>>> --numjobs=50 --runtime=90 --group_reporting --name=file1; fio >>>> --filename=/dev/vda1 --direct=1 --rw=randwrite --bs=4k --size=200G >>>> --numjobs=50 --runtime=90 --group_reporting --name=file1; halt >>>> >>>> Strangely exactly THIS OSD also has the most log entries: >>>> 64K ceph-osd.20.log >>>> 64K ceph-osd.21.log >>>> 1,3M ceph-osd.22.log >>>> 64K ceph-osd.23.log >>>> >>>> But all OSDs are set to debug osd = 20. >>>> >>>> dmesg shows: >>>> ceph-osd[5381]: segfault at 3f592c000 ip 00007fa281d8eb23 sp >>>> 00007fa27702d260 error 4 in libtcmalloc.so.0.0.0[7fa281d6a000+3d000] >>>> >>>> I uploaded the following files: >>>> priebe_fio_randwrite_ceph-osd.21.log.bz2 => OSD which was OK and didn't >>>> crash >>>> priebe_fio_randwrite_ceph-osd.22.log.bz2 => Log from the crashed OSD >>>> üu >>>> priebe_fio_randwrite_core.ssdstor001.27204.bz2 => Core dump >>>> priebe_fio_randwrite_ceph-osd.bz2 => osd binary >>>> >>>> Stefan >>> >>> -- >>> 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 >> >> -- >> 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 -- 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
