Module unmount 

Unmounting of FUSE-mounted Hexz filesystems.

This command safely detaches Hexz snapshots that were mounted as filesystems using the mount command. It uses platform-specific unmount tools and handles error cases gracefully.

Unmount Strategy

The command tries unmount methods in order:

1. Linux: fusermount -u (preferred for FUSE mounts)
2. Fallback: umount (generic unmount tool)

Usage

# Unmount a previously mounted snapshot
hexz vm unmount /mnt/snapshot

Error Handling

The command handles several cases gracefully:

• Not mounted: Returns success (already unmounted)
• Busy: Reports error if mountpoint is in use
• Permission denied: Reports error if insufficient privileges

Safety

• Does not modify the snapshot or overlay files
• Safe to run even if already unmounted
• Does not affect other mounts

Overlay Persistence

If the mount was created with an overlay (--overlay), the overlay file remains intact after unmounting and can be used for future mounts or commits.

Functions

run

Unmounts a previously mounted Hexz filesystem.