What problem/issue/behavior are you having trouble with? What do you expect to see? There is a limitation on the VNX that each NFS share can only contain 65k directories Since gnocchi creates a directory for each metric, at scale this can easily grow to over 65k directories, overwhelming the storage backend and causing gnocchi (and eventually redis) to lock up For an example of how little scale it takes to reach this limitation, in this Verizon lab, the archive policy is set to retain 6 ten minute points per hour of data, for a relatively small number of VMs [stack@hostname01~]$ openstack server list --all | grep ACTIVE | wc -l 175 [root@hostname01 ~]# ls /var/lib/gnocchi/ | wc -l 17781
There's one directory per metric with the file driver. The archive policies have no influence over that. Is there any limit on the number of files created on VNX NFS shares?
It would also appear that there's a limitation in number of files to 500k per directory as per this document [1]. [1] https://vmwiz.files.wordpress.com/2012/12/docu44573_vnx-operating-environment-for-file-release-notes-version-7-1-56-5.pdf
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2019:0045