On Mon 23 Oct 2023 at 17:28:54 (+0200), hw wrote: > On Mon, 2023-10-23 at 10:30 -0400, Greg Wooledge wrote: > > On Mon, Oct 23, 2023 at 04:17:11PM +0200, hw wrote: > > > I have an entry in the fstab to mount an NFS share via IPv6. For > > > unknown reasons, the entry is being ignored on boot, so after booting, > > > I have to log in as root and do a 'mount -a' which mounts the share > > > without problems. > > > > Do your IPv4 NFS mounts have the same behavior? > > No, I can mount the same share with the host name or the IPv4 address > of the same server, and it works as it should. The IPv6 connection is > set to be required at boot. > > > > [fd53::11]:/srv/example /home/example/foo nfs > > > _netdev 0 0 > > > > On my systems, the options field contains "defaults,_netdev" and possibly > > a few other things. I don't know whether that matters. > > I'll try --- I think it uses defaults anywhen when no defaults are > specified. What else would it use other than defaults ... > > > If you add an entry to /etc/hosts for this NFS server, and mount the > > share by hostname, does that change anything? > > I have a DNS server (on the same machine that serves the share) which > works fine. Making an entry in /etc/hosts is something I want to > avoid. If the addresses of the server ever change, I wont remember > that entry and will have to spend ever so much time to figure out > what's wrong ... > > > > I have another case in which machines need to be connected to a > > > particular VLAN to mount home directories. In case they are not > > > connected to that VLAN, I don't want the boot process to proceed at > > > all because the home directories won't be available. > > > > Hmm... can you add the "fail" option after _netdev? I've never tried. > > Hm, in man mount, there's only 'nofail' for when the mount is allowed > to fail. That also means that mounts must not fail and the failure > must not be ignored. Same goes man fstab. I doubt there's a 'fail' > option. Who would want a mount to fail? > > > > So how do I force it that the entries in fstab are not being silently > > > ignored? I want these shares either mounted, like through like 3 > > > retries, or booting to stop when they can't be mounted. > > > > I do not know how to allow a specific number of retries. Not without > > writing your own hacked-up shell scripts, at least. > > The retries aren't exactly necessary; I merely thought it can't hurt > to retry, and systemd should do that anyway when there's a failure the > first time.
You've read man mount, but have you read man systemd.mount? Specifically the second paragraph of FSTAB. Cheers, David.
