[Bug 1970264] Re: autofs fails to mount nfs4 shares with "error 0x3 getting portmap client"

[Michael Kiermaier]

** Summary changed:

- autofs fails to mount nfs4 shares
+ autofs fails to mount nfs4 shares with "error 0x3 getting portmap client"

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https://bugs.launchpad.net/bugs/1970264

Title:
  autofs fails to mount nfs4 shares with "error 0x3 getting portmap
  client"

Status in autofs package in Ubuntu:
  New

Bug description:
  I'm running a server which provides user home directories as NFSv4
  shares. The clients mount these shares via automount + LDAP.

  Now I've updated one client from 20.04 to 22.04 (new installation from scratch). Setting up things as before, I cannot get the automount mechanism to work any more.
  After the update, the autofs package version is 5.1.8-1ubuntu1.

  Setting autofs to verbose mode, the crucial lines in /var/log/syslog on the client are
  automount[115692]: mount(nfs): nfs options="nfsvers=4,hard", nobind=0, nosymlink=0, ro=0
  automount[115692]: get_nfs_info: called with host <...> proto 6 version 0x40
  automount[115692]: get_portmap_client: error 0x3 getting portmap client
  automount[115692]: mount(nfs): no hosts available

  I think it is the same bug reported on the autofs mailing list here:
  https://www.spinics.net/lists/autofs/msg02389.html
  Apparently, it has been introduced in the transition of autofs from 5.1.7 to 5.1.8.

  A fix has been posted here:
  https://www.spinics.net/lists/autofs/msg02391.html

  It would be great if this fix could be included in Ubuntu 22.04.
  Otherwise, I cannot update my clients. As my setup should not be too
  exotic, I guess there are other people who will face the same problem
  when they are doing the Ubuntu update to the new LTS version.

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