NFS mounts *are* sometimes not actually mounted. NFSv4 mounts seem to be more often missing than not. After reboot:
pieter@danae:~$ grep : /etc/fstab # /etc/fstab: static file system information. repo:/aegis /aegis nfs4 rw,rsize=32768,wsize=32768,defaults 0 0 pixar:/net/pixar /net/pixar nfs rw,tcp,rsize=32768,wsize=32768,defaults 0 0
pieter@danae:~$ grep : /proc/mounts pixar:/net/pixar /net/pixar nfs rw,v3,rsize=32768,wsize=32768,hard,lock,proto=tcp,addr=pixar 0 0
pieter@danae:~$ sudo mount -a pieter@danae:~$ grep : /proc/mounts pixar:/net/pixar /net/pixar nfs rw,v3,rsize=32768,wsize=32768,hard,lock,proto=tcp,addr=pixar 0 0 repo:/aegis /aegis nfs4 rw,v4,rsize=32768,wsize=32768,hard,intr,lock,proto=tcp,addr=repo 0 0
But if I re-order the NFSv4 mount after the NFSv3 mount, it *was* mounted 6 reboots in a row.
NFS mounts *are* sometimes not actually mounted. NFSv4 mounts seem to be more often missing than not. After reboot:
pieter@danae:~$ grep : /etc/fstab 32768,wsize= 32768,defaults 0 0 rsize=32768, wsize=32768, defaults 0 0
# /etc/fstab: static file system information.
repo:/aegis /aegis nfs4 rw,rsize=
pixar:/net/pixar /net/pixar nfs rw,tcp,
pieter@danae:~$ grep : /proc/mounts 32768,wsize= 32768,hard, lock,proto= tcp,addr= pixar 0 0
pixar:/net/pixar /net/pixar nfs rw,v3,rsize=
pieter@danae:~$ sudo mount -a 32768,wsize= 32768,hard, lock,proto= tcp,addr= pixar 0 0 32768,wsize= 32768,hard, intr,lock, proto=tcp, addr=repo 0 0
pieter@danae:~$ grep : /proc/mounts
pixar:/net/pixar /net/pixar nfs rw,v3,rsize=
repo:/aegis /aegis nfs4 rw,v4,rsize=
But if I re-order the NFSv4 mount after the NFSv3 mount, it *was* mounted 6 reboots in a row.