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
