Unfortunately we haven't a serial console now, perhaps we can add one per node, thanks a lot
On Mon, Nov 22, 2010 at 12:18 PM, Kevin Van Maren <[email protected]> wrote: > Larry wrote: >> >> We add the "options libcfs libcfs_panic_on_lbug=1" in modprobe.conf to >> make the server kernel panic ASAP the LBUG happened. Is there some way >> to make the server dead a few seconds after the LBUG? We are also >> puzzled with the message lost during the LBUG happened. >> > > The messages should have gone to the console just fine (hopefully you are > logging a serial console). > If you are talking about /var/log/messages, then yes, it will be missing the > final output as the > messages don't have time to get written to disk on a kernel panic. > > Kevin > > >> On Mon, Nov 22, 2010 at 10:42 AM, Kevin Van Maren >> <[email protected]> wrote: >> >>> >>> Sure, but I think for engineering to make progress on this bug, they are >>> going to want a crash dump. If you can enable crash dumps and panic on >>> lbug >>> (and if HA, increase dead timeout so it can complete the dump before >>> being >>> shot in the head) it would provide more info for the bug report. >>> >>> That being said, there are quite a few other bugs that have been fixed >>> since >>> 1.8.0, so you really should upgrade ASAP to 1.8.4. >>> >>> Kevin >>> >>> >>> On Nov 21, 2010, at 6:59 PM, Larry <[email protected]> wrote: >>> >>> >>>> >>>> We had a LBUG several days ago on our lustre 1.8.0. One OSS reported >>>> >>>> kernel: LustreError: >>>> 24669:0:(service.c:1311:ptlrpc_server_handle_request()) >>>> ASSERTION(atomic_read(&(export)->exp_refcount) < 0x5a5a5a) failed >>>> kernel: LustreError: >>>> 24669:0:(service.c:1311:ptlrpc_server_handle_request()) LBUG >>>> kernel: Lustre: 24669:0:(linux-debug.c:222:libcfs_debug_dumpstack()) >>>> showing stack for process 24669 >>>> ...... >>>> >>>> I google for this, and find little information about it. It seems to >>>> be a race condition on OSS, right? Should I open a bugzilla for this >>>> LBUG? >>>> Thanks. >>>> _______________________________________________ >>>> Lustre-discuss mailing list >>>> [email protected] >>>> http://lists.lustre.org/mailman/listinfo/lustre-discuss >>>> >> >> _______________________________________________ >> Lustre-discuss mailing list >> [email protected] >> http://lists.lustre.org/mailman/listinfo/lustre-discuss >> > > _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
