Message boards : Number crunching : event log says "server can't open log file" when pushing the update button
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Erich56

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Message 51668 - Posted: 11 Mar 2025, 17:27:04 UTC

today, on my Windows11 host I detected a few failed CMS tasks.
Stderr looks like this: https://lhcathome.cern.ch/lhcathome/result.php?resultid=420097507

When trying to download new tasks, no tasks come in, and the BOINC event log says "Server can't open log file (../log_boinc02/scheduler.log)"

Same thing happens when trying to download Theory tasks.

I looked up the Virtual Box Manager > Virtual media: everything okay there.
The one currently running Theory task is still running okay and will probably finish by tomorrow.

What's going wrong?
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Harri Liljeroos
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Message 51669 - Posted: 11 Mar 2025, 18:39:15 UTC - in response to Message 51668.  

In addition to the message you see I get this:
63975	LHC@home	11-03-2025 20:36	[sched_op] Deferring communication for 00:02:22	
63976	LHC@home	11-03-2025 20:36	[sched_op] Reason: project is down	

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Erich56

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Message 51670 - Posted: 11 Mar 2025, 19:06:36 UTC

A minute ago, the host in question downloaded CMS tasks.
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Harri Liljeroos
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Message 51671 - Posted: 11 Mar 2025, 22:46:35 UTC - in response to Message 51670.  

Yes, it seems to be almost random when you get the error and when some new tasks.
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Erich56

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Message 51672 - Posted: 12 Mar 2025, 6:04:43 UTC - in response to Message 51671.  

Yes, it seems to be almost random when you get the error and when some new tasks.
this is still the case on some of my hosts. Something's weird with the download server
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computezrmle
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Message 51673 - Posted: 12 Mar 2025, 7:45:36 UTC

I notified CERN this morning.
They replied this was caused by wrong file permissions and should be fixed now.
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Message boards : Number crunching : event log says "server can't open log file" when pushing the update button


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