ParallelCluster config file - SharedStorage mount options

Question

Quick Question!

When mounting a FSX OpenZFS on the cluster via the yaml. config file during cluster creation, does the SharedStorage section takes care of mounting this filesystem using optimal settings?
I was reading we should use 'nconnect=16', for example, for better performance. I wondering if this mount option is already taken care of via the config file. If not, how to can it be added?

https://docs.aws.amazon.com/fsx/latest/OpenZFSGuide/performance.html

Thanks,
Danilo

Answer

You may have more luck asking at the Github repo - https://github.com/aws/aws-parallelcluster - but I don't see any evidence for `mount` options in the documentation for any filesystem, not even ZFS.

Poking around the Chef cookbooks (which do the instance mounting/unmounting), `options` for ZFS looks hardcoded - https://github.com/aws/aws-parallelcluster-cookbook/blob/develop/cookbooks/aws-parallelcluster-common/resources/lustre/partial/_mount_unmount.rb#L124

Answer

Unfortunately , the performance tips from FSx are not applied and there is no way to customize it with cluster configuration file.

ParallelCluster config file - SharedStorage mount options

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