[Bug 1978426] Re: "ignore" mount option set for autofs is not observed

[Maarten Jacobs]

I now have a few machines on different releases (18.04, 20.04, 22.04) so
I can compare.

On 18.04:
Output from mount:
/etc/auto.<redacted> on /home/<redacted>/Documents type autofs (rw,relatime,fd=6,pgrp=1323,timeout=300,minproto=5,maxproto=5,direct,pipe_ino=27955)
<redacted>:/<redacted>/Documents on /home/<redacted>/Documents type nfs4 (rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=<redacted>,local_lock=none,addr=<redacted>)

Output from gio mount -l:
Drive(0): SanDisk SDSSDA120G
  Type: GProxyDrive (GProxyVolumeMonitorUDisks2)
Drive(1): TSSTcorpCD-ROM  TS-L162C
  Type: GProxyDrive (GProxyVolumeMonitorUDisks2)
Mount(0): Documents -> file:///home/<redacted>/Documents
  Type: GProxyMount (GProxyVolumeMonitorUDisks2)

On 22.04:
Output from mount:
/etc/auto.<redacted> on /home/<redacted>/Documents type autofs (rw,relatime,fd=6,pgrp=1048,timeout=300,minproto=5,maxproto=5,direct,pipe_ino=28209)
<redacted>:/<redacted>/Documents on /home/<redacted>/Documents type nfs4 (rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=<redacted>,local_lock=none,addr=<redacted>)

Output from gio mount -l:
Drive(0): SSD2SC120G1SA754D117-820
  Type: GProxyDrive (GProxyVolumeMonitorUDisks2)
Mount(4): Documents -> file:///home/jacobsma/Documents
  Type: GProxyMount (GProxyVolumeMonitorUDisks2)
Mount(5): Documents -> file:///home/jacobsma/Documents
  Type: GProxyMount (GProxyVolumeMonitorUDisks2)

gio mount does show the same mount twice on 22.04, but only once on
18.04. Oddly enough, the "ignore" mount option isn't set on either, so
while I thought that might be related to this problem perhaps it isn't.

Should this bug be assigned to glibc (as you suggested), and the title
should be updated since the ignore mount option doesn't seem to matter?

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https://bugs.launchpad.net/bugs/1978426

Title:
  "ignore" mount option set for autofs is not observed

Status in autofs package in Ubuntu:
  Incomplete
Status in thunar package in Ubuntu:
  Incomplete

Bug description:
  I am thinking autofs is not the right package for this, but the
  behavior is related to it.

  I have various NFS mounts configured with autofs, and invariably all
  of these mounts are reported twice by 'mount' as well as 'gio mount
  -l'. Similarly my file manager (Thunar) also shows these mounts twice.

  When I run 'mount', I see the same mount twice:

  /etc/auto.<redacted> on /home/<redacted>/Documents type autofs (rw,relatime,fd=7,pgrp=11462,timeout=300,minproto=5,maxproto=5,direct,ignore,pipe_ino=167388)
  <redacted>:/storage/Documents on /home/<redacted>/Documents type nfs4 (rw,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=<redacted>,local_lock=none,addr=<redacted>)

  I've anonymized the entries a bit. The first entry is created when the
  master map is read, the second one is the "actual" NFS mount (created
  when I access the mount point).

  I've enabled "use_ignore_mount_option" in my autofs.conf - not quite
  sure if that's what caused the "ignore" option to be included on the
  autofs entry. But "ignore" is on the autofs line, and by the
  description of that option, it should cause user space applications to
  ignore the mount. Which apparently isn't happening.

  Hence my earlier statement that I don't think autofs is the problem -
  I think it's doing what it's supposed to - but the other applications
  are not observing the mount option.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: autofs 5.1.6-2ubuntu0.1
  ProcVersionSignature: Ubuntu 5.4.0-117.132-generic 5.4.189
  Uname: Linux 5.4.0-117-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.24
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: XFCE
  Date: Sun Jun 12 21:43:36 2022
  InstallationDate: Installed on 2013-05-04 (3326 days ago)
  InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
  SourcePackage: autofs
  UpgradeStatus: Upgraded to focal on 2022-03-18 (86 days ago)

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