:: Re: [DNG] Filesystem questions
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Author: Arnt Karlsen
Date:  
To: dng
Subject: Re: [DNG] Filesystem questions
On Wed, 1 Jul 2026 15:12:11 -0500, Leroy wrote in message
<19b2d26c-5f20-47ae-a598-4ad01fcdc31a@???>:

> Checking root's history I find:
>
> 1406  07/01/26 12:04:10 mount -o rw,suid,dev,exec,auto,nouser,async
> /dev/sdb12 /mnt/p12
>
> When I run findmnt


..thanks for teaching or reminding me about findmnt,
I do not recall ever haing used it. :o)

> I get
>
> └─/mnt/p12                   /dev/sdb12  btrfs
>  rw,relatime,space_cache=v2,subvolid=5,subvol=/
>
> Why is there a difference?


..dunno, anyone?

> And a related question,
>
> In /etc/fstab there is an entry:
>
> UUID=3a4d8805-d3df-41d0-ae20-317a658218db /Data           ext3
> defaults 0       2
>
> But findmnt shows
>
> ├─/Data                      /dev/sdb3   ext3        rw,relatime
>
> I noted in "man fstab" the statement
>
> "defaults
>            use default options. The default depends on the kernel
> and the filesystem. mount(8) does not have any hardcoded set of
>            default options. The kernel default is usually rw, suid,
> dev, exec, auto, nouser, and async."
>
> What are the kernel and filesystem defaults for Devuan?


..playing with findmnt --fstab # --mtab # --kernel and a wee
bit of RTFM, leads me to belive that using the same kernels
that both we and Debian use, with the same fs, servers etc
setup, _should_ yield the same "findmnt --kernel " output,
until the systemd fanbois mess things up more, soooooooooo,
we probably should keep an eye on this datapoint.


--
..med vennlig hilsen = with Kind Regards from Arnt Karlsen
...with a number of polar bear hunters in his ancestry...
Scenarios always come in sets of three:
best case, worst case, and just in case.