Unable to update to master from 6.4 was (Re: libnbd and fuse: missing /dev/fuse device)

[Autumn Jolitz]

Hi, 

So I got a /usr/src on master, did the build-all install-all.

Upon reboot, I discovered that all four SATA3 drives (2 from mPcie, 2 from an Pciex4 sata card) all failed to have their disklabel64 be available.

An `fdisk /dev/da2` showed the expected partitions, but there was no accompanying /dev/da2s1a et al.

No disklabel. I do have a USB drive (gpt show and fdisk both show entries) and a SATA SSD (GPT formatted definitively).

I’m now downgrading to 6.4 again (build-all / install-all) after booting on the older kernel.

As it stands for me, 6.4 -> master is NOT safe.

I am happy to try again, but I will need some help in figuring out what will help determine/fix the issue.

Autumn

> On Jan 25, 2026, at 4:13 PM, Aaron LI <aly at aaronly.me> wrote:
> 
> Yes, just upgrade to the master branch. 6.4 branch is really old and missing many features:(
> 
> Aaron
> 
>> On Jan 26, 2026, at 07:04, Autumn Jolitz <autumn.jolitz at gmail.com> wrote:
>> 
>> Hi Aaron,
>> 
>> That module does not exist in my kernel (v6.4.2.23.ga71cb-RELEASE, X86_64_GENERIC).
>> 
>> Would I need to add ``options                FUSE                    # Fuse support`` to the config? The option looked like it was linked to a “does nothing” entry.
>> 
>> Perhaps I am using a kernel that is too old? Do I need to switch to the master branch for the fuse support?
>> 
>> Autumn
>> 
>>>> On Jan 19, 2026, at 8:52 PM, Aaron LI <aly at aaronly.me> wrote:
>>> 
>>>> On 1/20/26 5:26 AM, Autumn Jolitz wrote:
>>>> Hi,
>>>> After installing `ocaml` / `nbdkit` and `go121`, I compiled libnbd and more specifically libnbd/fuse. My goal is to be able to mount an nbd device in user space.
>>>> However, a call to `fuse_mount (fuse, mountpoint)` returns -1 with "fuse: failed to open fuse device: No such file or directory”
>>> 
>>> Hi Autumn,
>>> 
>>> Did you load the `fuse` kernel module by `kldload fuse` ?
>>> 
>>> By the way, `fuse` support is still regard as experimental in DragonFly.  It's been tested to work with sshfs, but may not work with others.
>>> 
>>> Cheers,
>>> Aaron
>>> 
>>