# Test Case: Stable Vnode Identity Behavior

**Test ID**: TC053-vfs-hash-integration
**Category**: VFS Integration
**Priority**: High

## Objective

Verify repeated resolutions of one EROFS NID expose one stable vnode identity
and file handle within a mount. This is behavior-level coverage of the
vfs_hash contract; it does not directly observe the internal hash bucket.

## Procedure

Mount vfs/vfs-plain.erofs and run:

    stat -f 'ino=%i gen=%v size=%z' \
      /tmp/repo22-g3/mnt/testdir/file.txt > TC053-a.txt
    stat -f 'ino=%i gen=%v size=%z' \
      /tmp/repo22-g3/mnt/testdir/./file.txt > TC053-b.txt
    cmp TC053-a.txt TC053-b.txt
    ./nfs_fh_tool capture /tmp/repo22-g3/mnt/testdir/file.txt TC053-a.fh
    ./nfs_fh_tool capture /tmp/repo22-g3/mnt/testdir/./file.txt TC053-b.fh
    ./nfs_fh_tool compare TC053-a.fh TC053-b.fh
    ./nfs_fh_tool describe TC053-a.fh

## Expected Results

Metadata and handles are identical and the handle NID/generation matches stat.
Record this observable identity behavior, handle hash, and cleanup.