Systemd mount works but automount does not

Suspected Bug
21

Here is a full set of commands that I ran, along with their outputs (everything unrelated to rclone has been removed)

❯ ls /mnt/Google/
ls: cannot access '/mnt/Google/': No such device

❯ ls /mnt/Google/
 Archived   Books   Creativity  Data   Documents   gdrive.exclude

❯ ps aux | grep rclone
root      830319  0.5  0.4 2195656 73704 ?       Sl   14:51   0:00 /usr/bin/rclone mount GoogleDrive: /mnt/Google

❯ cat /proc/830319/mountinfo
379 27 0:70 / /mnt/Google rw,relatime shared:433 - autofs systemd-1 rw,fd=57,pgrp=1,timeout=600,minproto=5,maxproto=5,direct,pipe_ino=768063
566 379 0:90 / /mnt/Google rw,nosuid,nodev,relatime shared:488 - fuse.rclone GoogleDrive: rw,user_id=0,group_id=0,allow_other

To answer your question,

What gives that error? That isn't an error from rclone. Where is it from?

It is the error that ls returns the first time, when I use it to trigger automount.

22

It seems like an issue with the multi-process model since it's using the /proc/self/mountinfo file now rather than the global /proc/mounts but I am not sure exactly where it's breaking because of this... :thinking:

23

I think I see the problem. In the /proc/self/mountinfo file there are two lines with /mnt/Google in.

Rclone will be finding the first and not seeing that there is a mount of type rclone so concluding that the mount isn't ready.

This is easy to fix - please give this a go @razimantv

v1.65.0-beta.7431.52de6d175.fix-automount on branch fix-automount (uploaded in 15-30 mins)

24

Thank you. I confirm that by taking the following steps:

  • Replace /usr/bin/rclone by the version in the zip
  • Remove daemon-wait=0 from the systemd .mount file
  • systemctl daemon-reload
  • Run ls on the mount point

The drive mounts correctly the first time itself.

25

@razimantv @ncw thank you for tracking this down. I was having the exact same issue with automount and couldn't figure it out. But reading through this thread 100% sure this is it. Look forward to the 1.65 fix. Degbug logs, scenario, and remote were basically the same.

26

Thank you for testing.

I've merged this to master now which means it will be in the latest beta in 15-30 minutes and released in v1.65 and I'll also put it in v1.64.1 which is due out very soon.

27

Fix worked. Thx!