Recently we discovered plenty of zipped Sflow.gz and netns.gz files at var/core on the Arista switch.
And when logging on we get this Warning:
Warning: the following filesystems have less than 10% free space left:
#bash df -h | grep var/core
It looks like the sFlow agent is crashing and creating core dump files. If the /var/core is full, there is a good possibility of continuous repeated crashes. There can be multiple reasons for the crash like memory leak, bugs, unsupported config etc and we need to analyze some logs before concluding on the reason for the crash.
Could you please open a case with TAC either by sending an email to firstname.lastname@example.org or via the customer portal with details.
It seems to hit the following bug:
When sampling packets with the BGP extension enabled, if the address family of the route does not match the address family of the next hop, the sFlow agent can restart unexpectedly. Use "no sflow extension bgp" to stop the sFlow agent agent from restarting.
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