presentation of storage to PAI via direct filesystems, mcp servers, other?

[emory]

helloooooh,

Originally I thought I was super clever and in ~/.claude/fs I symlinked datasets from my zpool (cascade) but whenever I ask my DA Sundae to grab something from her obsidian vault or one of mine without using an MCP service and just direct filesystem access it usually bangs around into things a few times before figuring out something that works but I'd rather avoid that.

How should people present filesystems to their PAI on claudeCode? I would like Sundae to have easy access these directories I've decided to define below but I feel like just giving her the fs would be a lot easier to work with? But then I'm concerned about costing because /notes/Goldfish has like over 9000 items in it and a ton of it just needs to get moved or deleted but i am not ready for that confrontation yet.

I have the rust fast-filesystem service running and configured like:

  13 │     "fast-filesystem": {
  14 │       "command": "rust-mcp-filesystem",
  15 │       "args": [
  16 │         "-w",
  17 │         "/Users/emory/.claude",
  18 │         "/cascade/people/zemory/research/notes/sundaeStash",
  19 │         "/cascade/people/zemory/research/notes/Goldfish",
  20 │         "/cascade/people/zemory/research/notes/soumatou",
  21 │         "/cascade/people/zemory/research/notes/sporage",
  22 │         "/cascade/people/zemory/Documents",
  23 │         "/cascade/developer/reboundRestoration Code",
  24 │         "/Volumes/DONT/.CloudStorage/Data/Dropbox/",
  25 │         "/Volumes/DONT/cloudfs/SynologyDrive/",
  26 │         "/Users/emory/Library/Mobile Documents/com~apple~CloudDocs/Downloads"
  27 │       ]
  28 │     },

I use the full zfs dataset path and mountpoints for the mcp configuration above there, but I do have (abbreviated) 'c/p/z' also mounted at /zemory/ and 'c/p/z/r/n' is also mounted at /notes/ on ICON, the macOS workstation that is "Sundae Prime" or "tier 0" if you will. That's where claudeCode (via Happy for interactive use usually) gets launched and where the PAI instance lives (my user account's ~/.claude/.

I haven't gone all in and moved my workstation homedir to zfs or anything, everything defined above are all on APFS volumes except cascade, an openzfs zpool [^reczfs]

for more detail

• /cascade/people/zemory/Documents - my non-iCloud Documents directory
• /cascade/people/zemory/research/notes/Goldfish - my primary Obsidian vault
• /cascade/people/zemory/research/notes/sundaeStash - my DA (Sundae)'s obsidian vault (also presented via mcp)
• /cascade/people/zemory/research/pai/mcp - where I clone repositories of mcp servers I hitch to my PAI

macOS has a clever thing called synthetic.conf that is not widely used i think, but it lets me do this with sealed volumes and all otherwise i'd never be able to create mountpoints at / and map/remap and define zfs vars to attach, for example, succor/localbackup/icon/restic is mounted at /backups and cascade is /cascade but i also have ...notes as /notes/ and ...zemory as /zemory/ which I'm pretty sure is confusing as hell for claudeCode and perhaps many readers. zfs set mountpoint=/zemory/research cascade/people/zemory/research would actually attach that dataset at that mountpoint on the mac.

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reczfs: OWC sells NVME jbods that are perfect for building high-performance resilient self-healing storage via zfs. cascade is a 4x4TB zpool; a stripe of two mirrors. each mirror set has one samsung 970 and one ADATA drive. this pool is backed up locally to a mechanical mirror direct attached, a NAS that then backs that up to two locations (usually a wasabi bucket and a b2 bucket)