How to pass filesystem mount options

[foux]

Hello,
I've seen the MOUNT_PARAMS options in the defaults file allowing, for example, to pass a different LUKS keyfile, but how do we pass mount options to the filesystem. For example I want to mount my BTRFS filesystems with the options compress=zstd,relatime,lazytime, how to do this with nmdctl mount?
Thanks

[qvr]

I think this is a missing feature currently. I was slightly hopeful it would've worked out-of-the-box by just configuring the options in system fstab like:

/dev/nmd4p1 /mnt/disk4 btrfs noauto,compress=zstd,relatime,lazytime 0 0

But because nmdctl mount calls mount with both device and mountpoint, fstab is not consulted without --options-source-force parameter, and with that parameter the device and mountpoint have to be in fstab or otherwise the mount fails.

So I think we need to have logic in mount_array_disks to check if the device is configured in fstab, and then add that parameter to mount command for that particular disk. And to keep things separated, maybe we should have our own fstab in /etc/nonraid/fstab?

[foux]

I think this is a missing feature currently. I was slightly hopeful it would've worked out-of-the-box by just configuring the options in system fstab like:

/dev/nmd4p1 /mnt/disk4 btrfs noauto,compress=zstd,relatime,lazytime 0 0

But because nmdctl mount calls mount with both device and mountpoint, fstab is not consulted without --options-source-force parameter, and with that parameter the device and mountpoint have to be in fstab or otherwise the mount fails.

So I think we need to have logic in mount_array_disks to check if the device is configured in fstab, and then add that parameter to mount command for that particular disk. And to keep things separated, maybe we should have our own fstab in /etc/nonraid/fstab?

The issue of basing on fstab, is that it won't work in every case (for exemple when using systemd mount units instead of fstab).
I think the cleaner solution is to have a new option in the defaults files, which would be transmitted directly to the mount command. Something like "FS_MOUNT_OPTIONS".
But the issue in that case is that it would be the same for all disks, so that's kind of complicated....

[foux]

FOr the moment I managed it manually via systemd mount units and crypttab. Not as integrated as uniqng nmdctl mount, but at least it works