Ticket 5644

Summary:	pending reboot state doesn't survive across a slurmctld restart
Product:	Slurm	Reporter:	Phil Schwan <phils>
Component:	slurmctld	Assignee:	Marshall Garey <marshall>
Status:	RESOLVED TIMEDOUT	QA Contact:
Severity:	4 - Minor Issue
Priority:	---
Version:	17.11.7
Hardware:	Linux
OS:	Linux
Site:	DownUnder GeoSolutions	Alineos Sites:	---
Atos/Eviden Sites:	---	Confidential Site:	---
Coreweave sites:	---	Cray Sites:	---
DS9 clusters:	---	HPCnow Sites:	---
HPE Sites:	---	IBM Sites:	---
NOAA SIte:	---	OCF Sites:	---
Recursion Pharma Sites:	---	SFW Sites:	---
SNIC sites:	---	Linux Distro:	---
Machine Name:		CLE Version:
Version Fixed:		Target Release:	---
DevPrio:	---	Emory-Cloud Sites:	---

Description Phil Schwan 2018-08-29 23:06:54 MDT

It appears that if you:

- "scontrol reboot" a bunch of nodes, one or more of which can't reboot immediately (because they're allocated)

- Restart slurmctld (most often because logrotate runs, but could also be a slurmctld crash, or changing a parameter that requires a restart, or whatever)

...then it loses the state of which nodes were pending reboot.

This may not sound all that important, but it's a big deal when you're trying to do a controlled reboot of 2,000 nodes, any number of which might be in the middle of tasks that will run for hours or even days.

Cheers,

-Phil

Comment 1 Marshall Garey 2018-08-31 10:57:08 MDT

Hi Phil,

I can't reproduce it, following what you've described.

- Does this happen every time, even if you just scontrol reboot a one or a few nodes?
- Do you have a test system you can easily reproduce this on? If so, can you detail exact steps?
- Can you upload the slurmctld log file from a day where this issue happened? Can you also upload a slurmd log file from one of the nodes that was allocated that the slurmctld forgot was pending reboot?

Thanks.

- Marshall

Comment 2 Marshall Garey 2018-09-06 16:59:51 MDT

- In addition to requests from comment 1, can you also upload your current slurm.conf file? That would be helpful for me in trying to reproduce this.

Comment 3 Marshall Garey 2018-09-18 10:16:46 MDT

Closing as resolved/timedout. Feel free to reopen this whenever you have time to get the requested materials.