Re: Here's One - NFS - Mounting Over Share = Nada

On 03/04/2025 16:27, c186282 wrote:

On 4/3/25 8:07 AM, Carlos E.R. wrote:

On 2025-04-03 11:51, c186282 wrote:

On 4/2/25 1:04 PM, The Natural Philosopher wrote:

On 02/04/2025 12:18, Carlos E.R. wrote:

On 2025-04-02 12:48, The Natural Philosopher wrote:

>
>

I always start with ...
>
*(ro,sync,no_root_squash,no_subtree_check)
>
In /etc/exports for the least restricted export

>
   Ok, tried your param list ... but still nada on
   the later-login mounts. Exportfs adds a bunch of
   other defaults to etab.
>
   It's VERY annoying.
>
   As best I can tell, NFS cuts in VERY early and there
   is no sane way to stop/delay it. As such it ONLY sees
   the original, empty, folder we are later gonna
   remount the USBs to.

>
It is working fine for me. You need "nohide" or version 4.
>

>
   Have a 4-drive external USB fixture. The drives USUALLY
   come up in order, but experience sez they won't ALWAYS
   do that. Depends on how quick the drives initialize,
   and there's one magnetic in the mix. sda/sdb/etc may
   not ALWAYS, reliably, be the same physical drives.
   A Python script can more easily probe/parse info that
   can individually identify, that's the next stage.

>
So, do not use sda/sdb. Use persistent naming.
>
>

   Anyway, the drives (sometimes) come up in /media/<user>
   and I have a mount statement that mounts them in my
   NFS share dir, under the appropriate sub-folder.

>
Define them in fstab.

    For you and rbowman ...
    Here's what my boxes look like now :
 . . . . .
 server
 /etc/exports :
 /home/nas/shar 192.168.0.0/24(rw,sync,no_root_squash,no_subtree_check)
 /etc/fstab :
 LABEL=ustor1 /home/nas/shar/qshar1 ext4 defaults,_netdev 0 0
LABEL=ustor2 /home/nas/shar/qshar2 ext4 defaults,_netdev 0 0
  client
 /etc/fstab :
 192.168.0.121:/home/nas/shar /mnt/shar nfs defaults, timeo=900,retrans=5,_netdev 0 0
 . . . . .
    Results - ON the server you can see both of the USB drives,
   so they ARE mounting where instructed. There is also a
   third subfolder under /shar that's directly written to by
   a script on the server box.
    On the CLIENT ... you can read/write to that third folder
   just fine. However the other two, the shares of the USB
   drives mounted on the server to, /home/nas/shar/qshar1 and
   /home/nas/shar/qshar2, are just BLANK.
    All permissions, server and client, are very generous
   for testing purposes - could restrict a bit later.
    MAY try sharing each folder under /shar individually
   rather that trying to share just /shar and hoping
   everything under it gets carried over - which it doesn't.

That would be the easier way of doing it. I cant remember if NFS automatically exports mounts
Ahh. You need to add the 'crossmnt' directive to the servers /etc/exports file for the whatever it is you are mounting
Then it will work the way you want it to
--
“Ideas are inherently conservative. They yield not to the attack of other ideas but to the massive onslaught of circumstance"
    -  John K Galbraith