Posted on November 26, 2018 6:55 pm
 |  Asked by Albert Coll
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Hello, when logging into several Arista 7280SR in which I had enabled vmtracer since several weeks, I got the following Warning:

Last login: Tue Nov 13 16:34:25 2018 from

Warning: the following filesystems have less than 10% free space left:
tmpfs (on /var/core) 0% (0 Available)
Please remove configuration such as tracing and clean up the space.


I read some other similar posts, recommending to clean the event monitor. But It is not the case for this specific one, so I’m unable to find out the solution.

I would really appreciate any suggestion about this.

Best regards.

Posted by Tamas Plugor
Answered on November 26, 2018 7:34 pm

Hi Albert,

Vmtracer might be crashing and filling up in var log agents and var core folders
you can check if that’s the case by going to those folders in bash and do an “ls -ltr”; if you see multiple vmtracer files with different PIDs, then for some reason the agent is crashing. You can delete those and keep the latest ones (so we can analyze), but if it’s crashing continuously you’ll need to disable the vmtracer agent, otherwise it will keep filling up your filesystem.
I’d recommend opening a TAC case (send email to support) and attaching the
-latest show tech
-show agent logs
and we can figure out from there what’s the reason of the agent restart.


Answered on November 26, 2018 7:57 pm

Hi Albert,

Whenever an agent or switch crashes, the core files from the crash get stored in /var/core directory.

You can go into bash mode and check the contents of /var/core using below commands :


Arista Networks EOS shell

[admin@switch ~]$ cd /var/core
[admin@switch core]$ ls -l
[admin@switch core]$ exit

Can you please paste the output of the above command?

Sneha Nayak

Posted by Kamlesh Sharma
Answered on November 27, 2018 9:19 am

Hi Albert,

It seems that you have one of the agent possibly vmtracer crashing and filling up all the space in /var/core file system. You could post the show agent log crash here and delete all the file except oldest one to free up the space.


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