[Bug 1979885] Re: /etc.nfs.conf fails for nfsv4 server / blkmapd dumps core

[Harald Rudell]

After a nfs-server restart,  rpc-svcgssd.service - RPC security service
for NFS server isn’t started again

so, one get-around is to reinstall 22.04 nfs after each restart

or, the service can be run separately using:
/usr/sbin/rpc.svcgssd -f

When this service is not present for nfs4 krb5p, which it isn’t in 22.04, then
mac OS produces error 61, because it goes looking for nfs3 and other old garbage
or it can say:
error 1
ls: fts_read: Permission denied
…macOS has lots of features like that…

A Linux client will say:
mount.nfs: mount(2): Permission denied

There is no logging or anything so just like Bud Fox you must “just
know”

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Title:
  /etc.nfs.conf fails for nfsv4 server / blkmapd dumps core

Status in nfs-utils package in Ubuntu:
  Incomplete

Bug description:
  When using the 22.04 /etc/nfs.conf an nfsv4 server fails to operate

  It kind of works but some clients fail and try nfsv3 ports

  symptoms:

  on boot:
  × nfs-blkmap.service - pNFS block layout mapping daemon
       Loaded: loaded (/lib/systemd/system/nfs-blkmap.service; enabled; vendor preset: enabled)
       Active: failed (Result: core-dump) since Sat 2022-06-25 07:14:34 PDT; 27min ago
  journalctl --catalog --pager-end --unit=nfs-blkmap.service
  Jun 25 07:14:34 c68z blkmapd[2386154]: open pipe file /run/rpc_pipefs/nfs/blocklayout failed: No such file or directory

  on systemctl restart nfs-server.service:
  ○ rpc-svcgssd.service - RPC security service for NFS server
       Loaded: loaded (/lib/systemd/system/rpc-svcgssd.service; static)
       Active: inactive (dead) since Fri 2022-06-24 19:07:31 PDT; 12h ago

  after boot it was:
  ● rpc-svcgssd.service - RPC security service for NFS server                                                                 
       Loaded: loaded (/lib/systemd/system/rpc-svcgssd.service; static)                                                       
       Active: active (running) since Sat 2022-06-25 08:27:27 PDT; 2min 7s ago                                                

  Some clients tries to access port 111 which is not used by nfs4 on the
  network

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: linux-image-5.15.0-40-generic 5.15.0-40.43
  ProcVersionSignature: Ubuntu 5.15.0-40.43-generic 5.15.35
  Uname: Linux 5.15.0-40-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl icp
  ApportVersion: 2.20.11-0ubuntu82.1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: N/A
  CasperMD5CheckResult: unknown
  Date: Sat Jun 25 08:37:48 2022
  HibernationDevice: RESUME=none
  MachineType: Apple Inc. Macmini8,1
  ProcEnviron:
   SHELL=/bin/bash
   LANG=en_US.UTF-8
   TERM=screen
   PATH=(custom, no user)
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: root=ZFS=rpool/ROOT/ubuntu_mc4at7 ro initrd=EFI\hostname\initrd.img
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-5.15.0-40-generic N/A
   linux-backports-modules-5.15.0-40-generic  N/A
   linux-firmware                             20220329.git681281e4-0ubuntu3.2
  RfKill:
   0: hci0: Bluetooth
   	Soft blocked: no
   	Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 04/24/2022
  dmi.bios.release: 0.1
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: 1731.120.10.0.0 (iBridge: 19.16.15071.0.0,0)
  dmi.board.name: Mac-7BA5B2DFE22DDD8C
  dmi.board.vendor: Apple Inc.
  dmi.board.version: Macmini8,1
  dmi.chassis.type: 9
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-7BA5B2DFE22DDD8C
  dmi.modalias: dmi:bvnAppleInc.:bvr1731.120.10.0.0(iBridge19.16.15071.0.0,0):bd04/24/2022:br0.1:svnAppleInc.:pnMacmini8,1:pvr1.0:rvnAppleInc.:rnMac-7BA5B2DFE22DDD8C:rvrMacmini8,1:cvnAppleInc.:ct9:cvrMac-7BA5B2DFE22DDD8C:sku:
  dmi.product.family: Mac mini
  dmi.product.name: Macmini8,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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