I have an issue with unmount of NFS volumes when rebooting or shutting down client machine - I have to wait for up to 30 minutes while NFS volume being unmounted.lients's conf (CentOS 7.3):/etc/fstab#NFS areaserver:/var/backup                              /mnt/backup                   nfs     rsize=65536,wsize=65536,intr,nolock,bg,hard,x-systemd.automountserver:/mnt/storage                             /mnt/storage                  nfs     rsize=65536,wsize=65536,intr,nolock,bg,hard,x-systemd.automountx-systemd.automount, nolock options which I found on other resources are not help me.Server's (CentOS 6.5):/etc/exports/var/backup  10.8.0.1(rw,sync,no_wdelay,nohide,no_root_squash,no_subtree_check)/mnt/storage 10.8.0.1(rw,sync,no_wdelay,nohide,no_root_squash,no_subtree_check)Interesting thing - all mount/unmount operations come immediately when I do them manually. But I have to wait when reboot/shutdown my client machine. What is wrong in my configuration?
NFS: Very slow unmount when rebooting/shutting down
mount;nfs;unmounting