[Bug 1901709] Re: build nfsdcld to avoid grace period in containers

[Andreas Hasenack]

nfs-utils is being updated in bug #1878601 and it does hav nfsdcld

** Changed in: nfs-utils (Ubuntu)
     Assignee: (unassigned) => Andreas Hasenack (ahasenack)

** Changed in: nfs-utils (Ubuntu)
       Status: New => In Progress

** Merge proposal linked:
   https://code.launchpad.net/~ahasenack/ubuntu/+source/nfs-utils/+git/nfs-utils/+merge/415545

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Title:
  build nfsdcld to avoid grace period in containers

Status in nfs-utils package in Ubuntu:
  In Progress

Bug description:
  Trying to use kernel nfs server in containers generally works, but
  generates dmesg warnings as follows:

  [   23.392559] NFSD: attempt to initialize umh client tracking in a container ignored.
  [   23.395065] NFSD: attempt to initialize legacy client tracking in a container ignored.
  [   23.395085] NFSD: Unable to initialize client recovery tracking! (-22)
  [   23.395106] NFSD: starting 90-second grace period (net f00005fd)

  On reboot clients do indeed hang for the grace period.

  From the description here ..

  https://man7.org/linux/man-pages/man8/nfsdcld.8.html

  .. it seems that modern kernels in combination with nfsdcld from
  modern nfs-utils can avoid this problem - is there any chance we could
  build and install it? It looks like it might have a sqlite dependency
  so possibly needs splitting off into a separate package.

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