NFS share of an AUFS pool not working

kalle-del-haye · 1. Februar 2014

One more AUFS Question.
I tryed and searches a lot but I can't fix it by myself.

Situation

I made same shared folder for my data:

Set up the AUFS pool and his bind share:

And use the bind share for NFS:

Problem

When I'M mounting the nfs share and show the content:

Code

sudo mount servername:/videopool /media/servername-video
ls  /media/servername-video

The directory is empty!?
Other shares and the pooled shares directly are working.

Have i made same mistake?
Or are there issus in OMV whith the combination of AUFS and NFS?

Thanks in advance
kalle

ryecoaaron · 1. Februar 2014

While mounted it as a samba share, it is working. It is not working with nfs or ftp even when looking at folder it is binding to (even as root). So, it isn't a permissions issue. I will need to research this.

ryecoaaron · 1. Februar 2014

I found the problem. It is the order of the bind mounts in /etc/fstab. The nfs and ftp bind mounts are happening before the aufs pool is bind mounted to the shared folder. This makes them empty. When I manually reordered fstab, it works fine. I will have to make a change to the plugin which may be very tricky.

** edit - I submitted a change request that will be necessary to fix this problem. Hopefully, Volker likes my solution.

kalle-del-haye · 1. Februar 2014

Thanks for your support!

So, in the meantime, I will export the pooled shares directly. This is not too unconvinient, because there are only two at the moment.
In the future I will add some more drives and would be happy to NFS-share the pool himself.

To when, I hope Volker likes your solution, too.

kalle

ryecoaaron · 2. Februar 2014

Zitat von "kalle-del-haye"

To when, I hope Volker likes your solution, too.

He did

kalle-del-haye · 2. Februar 2014

Zitat von "ryecoaaron"

He did

Yea, I have red his note.
When it's became a commit maybe it will be the next step out of testing state for AUFS.

Thank you, both.
kalle

kalle-del-haye · 8. Februar 2014

It's working!

With 'openmediavault 0.5.34' the nfs export of an aufs pool is working for me.
But I have to set the 'fsid' nfs option. (Maybe a little hint in the aufs-information would be helpfull to other people?)

Thanks ryecoaaron.
Thanks Volker.

kalle

ryecoaaron · 8. Februar 2014

I will look into why it is needed. Thanks for the info

kalle-del-haye · 9. Februar 2014

This syslog entry indicates the need:
(Restarting nfs without the 'fsid' parameter.)

Code

Feb  9 10:11:03 kernel: [35623.838054] nfsd: last server has exited, flushing export cache
Feb  9 10:11:05 kernel: [35624.981695] svc: failed to register lockdv1 RPC service (errno 97).
Feb  9 10:11:05 kernel: [35624.981715] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Feb  9 10:11:05 kernel: [35624.981723] NFSD: starting 90-second grace period
Feb  9 10:11:55 mountd[8914]: qword_eol: fflush failed: errno 22 (Invalid argument)
Feb  9 10:11:55 mountd[8914]: Cannot export /export/videopool, possibly unsupported filesystem or fsid= required

Maybe this helps you a little.

kalle

ryecoaaron · 9. Februar 2014

Just found this in the aufs manual:

Code

Aufs is supporting NFS-exporting. Since aufs has no actual block device, you need to add NFS ’fsid’ option at exporting. Refer to the manual of NFS about the detail of this option.

I added a note to the setup guide on omv-extras.org. I will add it to the plugin's info tab as well.

shu.eclipse · 9. Januar 2022

I fixed issue by change the orders of /etc/fstab.

make nfs line above smb lines , it works.

following are log / error msg.

Code

OMV\ExecException: Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C.UTF-8; omv-salt deploy run --no-color nfs 2>&1' with exit code '1': debian:
----------
          ID: configure_default_nfs-kernel-server
    Function: file.managed
        Name: /etc/default/nfs-kernel-server
      Result: True
     Comment: File /etc/default/nfs-kernel-server is in the correct state
     Started: 16:55:21.470662
    Duration: 26.426 ms
     Changes:
----------
          ID: configure_nfsd_exports
    Function: file.managed
        Name: /etc/exports
      Result: True
     Comment: File /etc/exports updated
     Started: 16:55:21.497207
    Duration: 27.163 ms
     Changes:
              ----------
              diff:
                  ---
                  +++
                  @@ -3,7 +3,7 @@

                   # /etc/exports: the access control list for filesystems which may be exported
                   #               to NFS clients.  See exports(5).
                  -/export/nas (fsid=1,rw,subtree_check,insecure)
                  +/export/nas (fsid=1,rw,subtree_check,insecure) (fsid=1,rw,subtree_check,insecure)

                   # NFSv4 - pseudo filesystem root
                   /export (ro,fsid=0,root_squash,no_subtree_check,hide)
----------
          ID: start_rpc_statd_service
    Function: service.running
        Name: rpc-statd
      Result: True
     Comment: The service rpc-statd is already running
     Started: 16:55:21.535486
    Duration: 23.477 ms
     Changes:
----------
          ID: start_nfs_kernel_server_service
    Function: service.running
        Name: nfs-kernel-server
      Result: False
     Comment: Job for nfs-server.service canceled.
     Started: 16:55:21.579600
    Duration: 981.788 ms
     Changes:

Summary for debian
------------
Succeeded: 3 (changed=1)
Failed:    1
------------
Total states run:     4
Total run time:   1.059 s in /usr/share/php/openmediavault/system/process.inc:195
Stack trace:
#0 /usr/share/php/openmediavault/engine/module/serviceabstract.inc(62): OMV\System\Process->execute()
#1 /usr/share/openmediavault/engined/rpc/config.inc(167): OMV\Engine\Module\ServiceAbstract->deploy()
#2 [internal function]: Engined\Rpc\Config->applyChanges(Array, Array)
#3 /usr/share/php/openmediavault/rpc/serviceabstract.inc(123): call_user_func_array(Array, Array)
#4 /usr/share/php/openmediavault/rpc/serviceabstract.inc(149): OMV\Rpc\ServiceAbstract->callMethod('applyChanges', Array, Array)
#5 /usr/share/php/openmediavault/rpc/serviceabstract.inc(588): OMV\Rpc\ServiceAbstract->OMV\Rpc\{closure}('/tmp/bgstatusdM...', '/tmp/bgoutputSA...')
#6 /usr/share/php/openmediavault/rpc/serviceabstract.inc(159): OMV\Rpc\ServiceAbstract->execBgProc(Object(Closure))
#7 /usr/share/openmediavault/engined/rpc/config.inc(189): OMV\Rpc\ServiceAbstract->callMethodBg('applyChanges', Array, Array)
#8 [internal function]: Engined\Rpc\Config->applyChangesBg(Array, Array)
#9 /usr/share/php/openmediavault/rpc/serviceabstract.inc(123): call_user_func_array(Array, Array)
#10 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('applyChangesBg', Array, Array)
#11 /usr/sbin/omv-engined(537): OMV\Rpc\Rpc::call('Config', 'applyChangesBg', Array, Array, 1)
#12 {main}

Alles anzeigen

Code

Jan  9 00:02:11 openmediavault kernel: [  379.007020] nfsd: last server has exited, flushing export cache

Zitat von ryecoaaron

I found the problem. It is the order of the bind mounts in /etc/fstab. The nfs and ftp bind mounts are happening before the aufs pool is bind mounted to the shared folder. This makes them empty. When I manually reordered fstab, it works fine. I will have to make a change to the plugin which may be very tricky.

** edit - I submitted a change request that will be necessary to fix this problem. Hopefully, Volker likes my solution.

Jetzt mitmachen!