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cxl-micron-reskit / famfs

This is the user space repo for famfs, the fabric-attached memory file system
Apache License 2.0
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mkfs.famfs: support configurable metadata log size? #4

Open jagalactic opened 6 months ago

jagalactic commented 6 months ago

Currently the log is always 8MiB, which currently holds something over 25000 log entries. Reasons we might support a configurable log size:

  1. 25K entries is not enough
  2. 8MiB is massive overkill (e.g. the device is going to be used for a single file, or a small set). In this case, the minimum log size will be 2MiB - one huge page.

Under no circumstances should we support a log size that is not a 2MiB multiple. Honestly I'm not sure this needs to be addressed, but it's a question that has come up several times.

The trickiest part would be test coverage.