Node.js’s test-fs-cp fails on Bcachefs

[Jayman2000]

Steps to reproduce

1. If you don’t already have one, then make a local clone of the nodejs/node repo by running this command:

   git clone https://github.com/nodejs/node
   

2. Change directory into your clone of the node repo by running this command:

   cd <path-to-node-repo>
   

3. (Recommended) Switch to a Git commit where this problem is know to occur by running this command:

   git switch --detach b0c65bbe8aef0c1b17bdbbb45f6a03210309134d
   

4. Build Node.js from source by following these instructions.

5. Run Node.js’s test-fs-cp test by running this command:

   out/Release/node test/parallel/test-fs-cp.mjs
   

Results

When I try following the steps to reproduce on a bcachefs filesystem, the last command prints this…

node:internal/modules/run_main:104
    triggerUncaughtException(
    ^

AssertionError [ERR_ASSERTION]: Expected values to be strictly deep-equal:
+ actual - expected

  Comparison {
+   code: 'ENOENT'
-   code: 'ERR_FS_CP_SOCKET'
  }

    at file:///home/jayman/Documents/Home/VC/space_afraid/Git/partially_mine/node/space_afraid/test/parallel/test-fs-cp.mjs:380:10
    at ModuleJob.run (node:internal/modules/esm/module_job:272:25)
    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:580:26)
    at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:98:5) {
  generatedMessage: true,
  code: 'ERR_ASSERTION',
  actual: Error: ENOENT: no such file or directory, lstat '/home/jayman/Documents/Home/VC/space_afraid/Git/partially_mine/node/space_afraid/test/.tmp.0/copy_%29/458596.sock'
      at cpSyncFn (node:internal/fs/cp/cp-sync:56:13)
      at cpSync (node:fs:3130:3)
      at assert.throws.code (file:///home/jayman/Documents/Home/VC/space_afraid/Git/partially_mine/node/space_afraid/test/parallel/test-fs-cp.mjs:381:11)
      at getActual (node:assert:836:5)
      at Function.throws (node:assert:982:24)
      at file:///home/jayman/Documents/Home/VC/space_afraid/Git/partially_mine/node/space_afraid/test/parallel/test-fs-cp.mjs:380:10
      at ModuleJob.run (node:internal/modules/esm/module_job:272:25)
      at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:580:26)
      at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:98:5) {
    errno: -2,
    code: 'ENOENT',
    syscall: 'lstat',
    path: '/home/jayman/Documents/Home/VC/space_afraid/Git/partially_mine/node/space_afraid/test/.tmp.0/copy_%29/458596.sock'
  },
  expected: { code: 'ERR_FS_CP_SOCKET' },
  operator: 'throws'
}

Node.js v24.0.0-pre

…and finishes with an exit status of 1.

When I try following the steps to reproduce on an ext4 filesystem, the test finishes with an exit status of 0.