[SOLVED] Automount NFS shares doesn't work

shuruper · 2023-01-02 06:28:31

Hi,
I've ran into this odd problem when I've configured automount NFS shares over local wifi network from https://wiki.archlinux.org/title/NFS_ via systemd/timers. So I have auto_share.timer that triggers auto_share.service which fails afterward. fstab was edited as advised on the same page I referenced and auto_share script is at /usr/local/bin also as instructed.

From journalctl command.

Jan 02 00:51:01 archXPS kernel: audit: type=1130 audit(1672638661.757:109): pid=1 uid=0 auid=4294967295 ses=4>
Jan 02 00:51:01 archXPS audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=auto_sha>
Jan 02 00:51:01 archXPS systemd[1]: Failed to start Automount NFS shares.
Jan 02 00:51:01 archXPS systemd[1]: auto_share.service: Failed with result 'exit-code'.
Jan 02 00:51:01 archXPS systemd[1]: auto_share.service: Main process exited, code=exited, status=32/n/a

Also

systemctl status auto_share.service
× auto_share.service - Automount NFS shares
     Loaded: loaded (/etc/systemd/system/auto_share.service; disabled; preset: disabled)
     Active: failed (Result: exit-code) since Mon 2023-01-02 01:00:14 EST; 16s ago
TriggeredBy: ● auto_share.timer
    Process: 3100 ExecStart=/usr/local/bin/auto_share (code=exited, status=32)
   Main PID: 3100 (code=exited, status=32)
        CPU: 29ms

Jan 02 01:00:14 archXPS systemd[1]: Starting Automount NFS shares...
Jan 02 01:00:14 archXPS systemd[1]: auto_share.service: Main process exited, code=exited, status=32/n/a
Jan 02 01:00:14 archXPS systemd[1]: auto_share.service: Failed with result 'exit-code'.
Jan 02 01:00:14 archXPS systemd[1]: Failed to start Automount NFS shares.

Just to make sure, those shares are available and I'm using those on my other laptop running arch so I'm confused here as to why the same settings do not work as expected. Need help to find what I'm missing here.

Last edited by shuruper (2023-01-02 23:07:55)

seth · 2023-01-02 07:40:36

as advised on the same page… From journalctl command.

Don't paraphrase and don't copy out of the pager.
The timer triggers, so that seems ok.
Post your fstab and the /etc/systemd/system/auto_share.service

I'm using those on my other laptop

Can you mount the share on the problematic system in a non-fancy fashion?
https://wiki.archlinux.org/title/NFS#Manual_mounting

shuruper · 2023-01-02 19:56:29

seth, thanks for helping me out here.

Manual mounting is working, it umounts itself after about 1 minute due to failed automount attempt (checked that by stopping the auto_share.timer).

my fstab:

cat /etc/fstab
# Static information about the filesystems.
# See fstab(5) for details.

# <file system> <dir> <type> <options> <dump> <pass>
# /dev/nvme1n1p2
UUID=a4df3545-a230-4fe4-8c09-6ed154d688b1       /               ext4            rw,relatime     0 1

# /dev/nvme1n1p3
UUID=411574bc-4210-4585-a6e3-6a5280882efc       /home           ext4            rw,relatime     0 2

/swapfile none swap defaults 0 0

mycloudex2ultra:/nfs/Public     /home/rutkaf/shared     nfs     noauto,nofail,noatime   0 0
mycloudex2ultra:/nfs/data       /home/rutkaf/data_nas   nfs     noauto,nofail,noatime   0 0
https://dav.box.com/dav         /home/rutkaf/box        davfs   rw,user,uid=rutkaf,noauto       0 0

Auto_share.service :

cat /etc/systemd/system/auto_share.service
[Unit]
Description=Automount NFS shares
After=syslog.target network.target

[Service]
Type=oneshot
ExecStart=/usr/local/bin/auto_share

[Install]
WantedBy=multi-user.target

seth · 2023-01-02 20:33:14

ExecStart=/usr/local/bin/auto_share

Yeah, that script now becomes very relevant, too

it umounts itself after about 1 minute due to failed automount attempt

You mean you can manually mount the share, but then the auto_share.timer triggers the auto_share.service and that results in the share getting unmounted??
How frequently is the timer triggered?

Sanity check: what's the background of this approach and would you possibly be better off w/ a systemd-automount (mount on demand, ie. when you try to access the share)?
Eg. sth. like

mycloudex2ultra:/nfs/Public	/home/rutkaf/shared	nfs  users,intr,noauto,x-systemd.automount,x-systemd.device-timeout=10,timeo=14,actimeo=3,noatime,soft,bg,nolock 0 0

shuruper · 2023-01-02 23:07:36

so this is the auto_share code I'm using

#!/bin/bash

function net_umount {
  umount -l -f $1 &>/dev/null
}

function net_mount {
  mountpoint -q $1 || mount $1
}

NET_MOUNTS=$(sed -e '/^.*#/d' -e '/^.*:/!d' -e 's/\t/ /g' /etc/fstab | tr -s " ")$'\n'b

printf %s "$NET_MOUNTS" | while IFS= read -r line
do
  SERVER=$(echo $line | cut -f1 -d":")
  MOUNT_POINT=$(echo $line | cut -f2 -d" ")

  # Check if server already tested
  if [[ "${server_ok[@]}" =~ "${SERVER}" ]]; then
    # The server is up, make sure the share are mounted
    net_mount $MOUNT_POINT
  elif [[ "${server_notok[@]}" =~ "${SERVER}" ]]; then
    # The server could not be reached, unmount the share
    net_umount $MOUNT_POINT
  else
    # Check if the server is reachable
    ping -c 1 "${SERVER}" &>/dev/null

    if [ $? -ne 0 ]; then
      server_notok[${#server_notok[@]}]=$SERVER
      # The server could not be reached, unmount the share
      net_umount $MOUNT_POINT
    else
      server_ok[${#server_ok[@]}]=$SERVER
      # The server is up, make sure the share are mounted
      net_mount $MOUNT_POINT
    fi
  fi
done

seth wrote:

You mean you can manually mount the share, but then the auto_share.timer triggers the auto_share.service and that results in the share getting unmounted??
How frequently is the timer triggered?

Yes, I can mount it by running "mount -t nfs servername:/nfs/share /share" and if the timer is started/enabled it will umount itself after ~1 min which is the auto_share.timer frequency.

seth wrote:

Sanity check: what's the background of this approach and would you possibly be better off w/ a systemd-automount (mount on demand, ie. when you try to access the share)?

The background is pretty simple - I was using this kind of a mount script for ~2 years on my other laptop and it worked like a charm out of the box (i.e. after I followed the description from NFS wiki page). So now I'm kind if curious as to what I've missed here.
Mount option using fstab with x-systemd.automount does work actually. And this fact helped me realize that the server name "mycloudex2ultra" isn't a good one - ones I replaced it with the actual IP - automount script started to work!
So the hassle was to not forget the /etc/hosts file.

Anyways, thanks for your help and I'm marking this thread as Solved.

Last edited by shuruper (2023-01-03 04:01:08)

Arch Linux

#1 2023-01-02 06:28:31

[SOLVED] Automount NFS shares doesn't work

#2 2023-01-02 07:40:36

Re: [SOLVED] Automount NFS shares doesn't work

#3 2023-01-02 19:56:29

Re: [SOLVED] Automount NFS shares doesn't work

#4 2023-01-02 20:33:14

Re: [SOLVED] Automount NFS shares doesn't work

#5 2023-01-02 23:07:36

Re: [SOLVED] Automount NFS shares doesn't work

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