On Mon, Apr 13, 2015 at 10:18 PM, Shawn Edwards <lesser.evil@xxxxxxxxx> wrote: > Here's a vmcore, along with log files from Xen's crash dump utility. > > https://drive.google.com/file/d/0Bz8b7ZiWX00AeHRhMjNvdVNLdDQ/view?usp=sharing > > Let me know if we can help more. > > On Fri, Apr 10, 2015 at 1:04 PM Ilya Dryomov <idryomov@xxxxxxxxx> wrote: >> >> On Fri, Apr 10, 2015 at 8:03 PM, Shawn Edwards <lesser.evil@xxxxxxxxx> >> wrote: >> > I took the rbd and ceph drivers out of the patched kernel above and >> > merged >> > them into Xen's kernel. Works as well as the old one; still crashes. >> > But >> > now I get logs. From the Xen logs: >> > >> > [ 1128.217561] ERR: >> > Assertion failure in rbd_img_obj_callback() at line 2363: >> > >> > rbd_assert(more ^ (which == img_request->obj_request_count)); >> >> Ah, that's a long standing bug which we know wasn't properly fixed - >> a tight race in rbd completion callback. It looks like it doesn't take >> long for you to reproduce it. Can you try grabbing a vmcore such that >> it can be inspected with crash utility? On a closer inspection, that looks like a simple error handling bug. The out of memory splat before the assert sets ->result to -ENOMEM and the logic in rbd_img_obj_callback() just fails to handle it. I'll fix it later this week. Thanks, Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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