gatsby v2.20.16 causes warn Error persisting state: EXDEV: cross-device link not permitted, rename

[drmats]

Description

After update to gatsby v2.20.16 while running development environment
(and also when building production code) a following warnings are printed
to the console:

warn Error persisting state: EXDEV: cross-device link not permitted, rename '/tmp/reduxcacheYQgXl6' -> '~/bug-repro/.cache/redux'
warn Error persisting state: EXDEV: cross-device link not permitted, rename '/tmp/reduxcacheyUMf1i' -> '~/bug-repro/.cache/redux'
warn Error persisting state: EXDEV: cross-device link not permitted, rename '/tmp/reduxcacheYwlYQe' -> '~/bug-repro/.cache/redux'

This is probably caused by recently introduced fix to #22959.

Steps to reproduce

Check-out gatsby-starter-hello-world, update gatsby to version 2.20.16 and run project:

$ npx gatsby new bug-repro https://github.com/gatsbyjs/gatsby-starter-hello-world
$ cd bug-repro
$ npm i gatsby@2.20.16
$ npm start

Expected result

Regular gatsby messages ended with success and dev server listening:

success Building development bundle - 14.247s

Actual result

success open and validate gatsby-configs - 0.043s
success load plugins - 0.034s

--- cut ---

success run queries - 0.091s - 2/2 21.91/s
warn Error persisting state: EXDEV: cross-device link not permitted, rename '/tmp/reduxcacheqOMD9C' -> '~/bug-repro/.cache/redux'
warn Error persisting state: EXDEV: cross-device link not permitted, rename '/tmp/reduxcacheWCin2r' -> '~/bug-repro/.cache/redux'
warn Error persisting state: EXDEV: cross-device link not permitted, rename '/tmp/reduxcacheWKdflr' -> '~/bug-repro/.cache/redux'
warn Error persisting state: EXDEV: cross-device link not permitted, rename '/tmp/reduxcachewQN2iO' -> '~/bug-repro/.cache/redux'
...

New lines with this warning are showing up approx. every second. System /tmp folder is populated with directories like
reduxcachew9mMGw, reduxcachewafKs4 reduxcacheyUMf1i ...

Environment

• Info:

  $ npx gatsby info
  
  System:
      OS: Linux 5.5 Fedora 30 (Workstation Edition) 30 (Workstation Edition)
      CPU: (8) x64 Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz
      Shell: 5.0.11 - /bin/bash
  Binaries:
      Node: 10.19.0 - /usr/bin/node
      npm: 6.13.4 - /usr/bin/npm
  Languages:
      Python: 2.7.17 - /usr/bin/python
  Browsers:
      Firefox: 74.0.1
  npmPackages:
      gatsby: ^2.20.16 => 2.20.16
  

• Kernel:

  $ uname -r
  
  5.5.10-100.fc30.x86_64
  

• System tmp directory:

  $ mount | grep /tmp
  
  tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
  

• System partition (with home directory):

  $ mount | grep " / "
  
  /dev/mapper/space-system on / type ext4 (rw,relatime)
  

• Gatsby version:

  $ npx gatsby --version
  
  Gatsby CLI version: 2.11.6
  Gatsby version: 2.20.16
  

[glarivie]

Same issue here ✋

[drmats]

Tinkering with it right now - it seems that reverting change introduced here:
e51ffd9
fixes the problem.

[drmats]

OK, In order not to revert the #22959 fix (and have the cache directory in the system /tmp directory) it seem that in the persist.ts file, instead using renameSync(), a moveSync() from fs-extra could be used.

There (in the moveSync()), fs.renameSync() is invoked and if it throws EXDEV then moveAcrossDevice() is invoked (consisting of copySync() followed by a removeSync()).

Reference: move-sync.js.

Testing the change locally.

[pvdz]

Oh hm, I'll look into it and the PR that was opened. Thanks for reporting it :)