There appears to be a bug with nchan as seen in this link: https://github.com/slact/nchan/issues/534
It would seem to me that this is related to the issues I am having. This is the second or third time this has happened to me. Out of nowhere, with no apparent, obvious trigger, my syslog gets filled with hundreds of messages like this one:
root@unraid:~# tail /var/log/syslog
Mar 15 00:45:47 unraid nginx: 2021/03/15 00:45:47 [alert] 3161#3161: worker process 4945 exited on signal 6
Mar 15 00:45:49 unraid nginx: 2021/03/15 00:45:49 [alert] 3161#3161: worker process 4964 exited on signal 6
Mar 15 00:45:51 unraid nginx: 2021/03/15 00:45:51 [alert] 3161#3161: worker process 4985 exited on signal 6
Mar 15 00:45:53 unraid nginx: 2021/03/15 00:45:53 [alert] 3161#3161: worker process 5003 exited on signal 6
Mar 15 00:45:55 unraid nginx: 2021/03/15 00:45:55 [alert] 3161#3161: worker process 5023 exited on signal 6
This repeats forever until the logs fill up, and while this is happening Unraid grinds slowly to a halt.
tail /var/log/nginx/error.log shows this
root@unraid:~# tail -n 50 /var/log/nginx/error.log
2021/03/15 00:45:20 [alert] 3161#3161: worker process 4358 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:22 [alert] 3161#3161: worker process 4427 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:22 [alert] 3161#3161: worker process 4454 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:24 [alert] 3161#3161: worker process 4461 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:26 [alert] 3161#3161: worker process 4514 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:27 [alert] 3161#3161: worker process 4584 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:28 [alert] 3161#3161: worker process 4599 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:29 [alert] 3161#3161: worker process 4607 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:30 [alert] 3161#3161: worker process 4659 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:31 [alert] 3161#3161: worker process 4712 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:32 [alert] 3161#3161: worker process 4747 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:34 [alert] 3161#3161: worker process 4776 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:36 [alert] 3161#3161: worker process 4795 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:38 [alert] 3161#3161: worker process 4816 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:40 [alert] 3161#3161: worker process 4850 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:41 [alert] 3161#3161: worker process 4872 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:43 [alert] 3161#3161: worker process 4886 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:45 [alert] 3161#3161: worker process 4908 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:47 [alert] 3161#3161: worker process 4945 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:49 [alert] 3161#3161: worker process 4964 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:51 [alert] 3161#3161: worker process 4985 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
2021/03/15 00:45:53 [alert] 3161#3161: worker process 5003 exited on signal 6
ker process: ./nchan-1.2.7/src/store/spool.c:479: spool_fetch_msg: Assertion `spool->msg_status == MSG_INVALID' failed.
I happened to be using my server, logged in via ssh, when this happened this time, and I was able to run '/etc/rc.d/rc.nginx stop', and this terminates nginx (and obviously means I cannot use the Unraid GUI) but appears to stop the system from crashing to a halt.
Please see
where some others have noted that this may be related to an old, stale Unraid tab open in a browser somewhere. I will try to track down any open tabs. I only have one other computer that may possibly have a tab open but don't have access to it at this exact moment, so can't test that theory right now.
I am unfortunately unable to trigger this bug on demand.
I was able to generate a diagnostics.zip, but I'm having trouble uploading it right now. I think its a permissions issue. I'll attach it once I figure that out.
Thanks for your help everyone
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