[fstab mount points] nfs and cifs shares

Greetings !!

I just set up the server this morning and concerning the lab at school everything went back all good: all the /etc/fstab were mounted without any problem, with nothing changed since last thursday → ???
Nothing changed at the configuration of the server nore the last configurations done on the /etc/fstab file on each client machine.

That’s nice…

But concerning the local network, here at home, using NFS: I got once again those messages: this morning it (sirius) booted very well

/var/log/boot.log


...
  OK  ] Started Setup Virtual Console.
[FAILED] Failed to mount /root.
See 'systemctl status root.mount' for details.
[DEPEND] Dependency failed for Local File Systems.
[DEPEND] Dependency failed for Early Kernel Boot Messages.
         Starting Restore /run/initramfs on shutdown...
...
  OK  ] Started Security Auditing Service.
         Starting Update UTMP about System Boot/Shutdown...
[FAILED] Failed to mount /datas1/nfsshares/exercices.
See 'systemctl status datas1-nfsshares-exercices.mount' for details.
[DEPEND] Dependency failed for Remote File Systems.
  OK  ] Started Update UTMP about System Boot/Shutdown.
         Starting Update UTMP about System Runlevel Changes...
  OK  ] Started Update UTMP about System Runlevel Changes.
[FAILED] Failed to mount /datas2.
See 'systemctl status datas2.mount' for details.
[FAILED] Failed to mount /datas1/nfsshares/Datas3.
See 'systemctl status datas1-nfsshares-Datas3.mount' for details.
[FAILED] Failed to mount /datas1/nfsshares/Linux.
See 'systemctl status datas1-nfsshares-Linux.mount' for details.
[FAILED] Failed to mount /datas1/nfsshares/Datas2.
See 'systemctl status datas1-nfsshares-Datas2.mount' for details.
[FAILED] Failed to mount /datas1/nfsshares/Datas1.
See 'systemctl status datas1-nfsshares-Datas1.mount' for details.
[FAILED] Failed to mount /datas1/nfsshares/Ntfs1.
See 'systemctl status datas1-nfsshares-Ntfs1.mount' for details.
[FAILED] Failed to mount /datas1/nfsshares/Ntfs2.
See 'systemctl status datas1-nfsshares-Ntfs2.mount' for details.
  OK  ] Stopped Forward Password Requests to Plymouth Directory Watch.
...

I have no informations for journalctl -u root.mount and the other datas1-nfsshares-* files as I always have to reboot once those messages are displayed during boot.
Sometimes I got a fallback shell but it appears randomly (with the CTRL-D to continue). When I got this message it is related 9 time on ten when windows (the other system rarely used on dualboot) forgot to clean up the dirty flag from one of the ntfs partitions.

The /root partition is btrfs as shown below:


sirius:/exemples # btrfs filesystem show

Label: 'racinelinux'  uuid: a80dc236-b35f-403c-993d-48d4255c073b
        Total devices 2 FS bytes used 28.81GiB
        devid    1 size 40.00GiB used 7.51GiB path /dev/sda6
        devid    2 size 150.00GiB used 28.03GiB path /dev/sdc1

Label: 'DATAS1'  uuid: 2cb28a00-35b4-4f22-95c8-2781dee5b201
        Total devices 1 FS bytes used 189.23GiB
        devid    1 size 256.00GiB used 240.00GiB path /dev/sdb1

Label: 'rootext'  uuid: dede3cf3-9fe2-4f0d-afb9-2104ffa16b12
        Total devices 1 FS bytes used 63.64GiB
        devid    1 size 73.57GiB used 73.56GiB path /dev/sdc2

Label: 'home'  uuid: adb86e35-7aae-4575-9874-673d4a251fe1
        Total devices 1 FS bytes used 1.30GiB
        devid    1 size 11.76GiB used 11.76GiB path /dev/sda7                                                                                                                            
                                                                                                                                                                                         
sirius:/exemples # df -h   
                                                                                                                                                              
Filesystem                   Size  Used Avail Use% Mounted on                                                                                                                            
devtmpfs                     7.8G  4.0K  7.8G   1% /dev                 
tmpfs                        7.9G   52M  7.8G   1% /dev/shm                                                                                                                              
tmpfs                        7.9G  9.7M  7.9G   1% /run                                                                                                                                  
tmpfs                        7.9G     0  7.9G   0% /sys/fs/cgroup                                                                                                                        
/dev/sda6                    191G   29G  162G  16% /                                                                                                                                     
/dev/sda6                    191G   29G  162G  16% /.snapshots
/dev/sdb2                    210G  178G   33G  85% /datas2
/dev/sdb1                    256G  191G   63G  76% /datas1
/dev/sdc2                     74G   64G  9.3G  88% /root
/dev/sda7                     12G  1.4G   11G  12% /home

//192.168.0.3/exercices       14G  6.0G  7.8G  44% /datas1/nfsshares/exercices
192.168.0.3:/windows/Linux   276G  209G   67G  76% /datas1/nfsshares/Linux
192.168.0.3:/windows/Datas1  160G   34G  127G  21% /datas1/nfsshares/Datas1
192.168.0.3:/windows/Datas2  306G  277G   30G  91% /datas1/nfsshares/Datas2
192.168.0.3:/windows/Ntfs2   250G  118G  133G  48% /datas1/nfsshares/Ntfs2
192.168.0.3:/windows/Datas3  380G  100G  280G  27% /datas1/nfsshares/Datas3
192.168.0.3:/windows/Ntfs1   513G  388G  125G  76% /datas1/nfsshares/Ntfs1

tmpfs                        1.6G  8.0K  1.6G   1% /run/user/0

Have no idea why /root cannot mount at random.