[oi-dev] Filesystems that both Unix and Linux can read

[Atiq Rahman]

Hi Jean-Pierre,
> it was a pita to have to do zpool import/export when switching oses
Yep, I am having the same pita experience.

On Sun, Aug 17, 2025 at 2:29 AM Jean-Pierre André via oi-dev <
oi-dev at openindiana.org> wrote:

> Stephan Althaus via oi-dev wrote on 8/17/25 9:42 AM:
> > On 8/17/25 02:08, Bob Friesenhahn wrote:
> >> If you are able to create the original zfs pool and filesystem format
> >> supported by Solaris 10 or OpenSolaris (before feature flags), then
> >> that should be a useful baseline which should work for Solaris,
> >> Illumos, FreeBSD, and Linux. That is provided that the OpenZFS
> >> implementations are respectful and do not automatically upgrade the
> >> pool version, or veer outside the bounds of the original
> >> specification. OpenSolaris and Illumos introduced the original feature
> >> flags so many of the feature flags should work with derivative zfs
> >> implementations.
> >>
> >> There is no substitute for testing!
> >>
> >> Bob
> >>
> >>
> >> On Sat, Aug 16, 2025, 6:22 PM Atiq Rahman <atiqcx at gmail.com> wrote:
> >>
> >>     Hi,
> >>     A file system related generic question:
> >>
> >>     I am looking to keep one of my GPT Partitions on my disk to be a
> >>     file system that both Illumos (Solaris) / FreeBSD and Linux can
> >>     read. This will be primarily to store data. I know there's vfat
> >>     (fat32). Wanna know if there's anything better (non-MSFTish) out
> >>     there.
> >>
> >>     Other than exfat, fat32 what else do we have?
> >>
> >>     I started using openzfs (which is at version 2.3.3 rn) on linux.
> >>     However, there's probably a version difference with Illumos/OI.
> >>     Since, I couldn't complete the OI setup on my machine yet I don't
> >>     know what version of zfs we are using on OI. I am not quite sure
> >>     if zfs will be a viable option due to lack of compatible versions
> >>     (openzfs on linux and ZFS on illumos).
> >>
> >>
> >>     Best!
> >>
> >>     Atiq
> >>
> >>     _______________________________________________
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> >>     oi-dev at openindiana.org
> >>     https://openindiana.org/mailman/listinfo/oi-dev
> >>
> >>
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> >
> > Hi!
> >
> > Yes, if you use the "-d" option with zpool create, all of illumos,
> > Solaris 10+, BSD, Linux with installed ZFS support can read/write to it.
> >
> > You are able to enable additional features one by one, whilst checking
> > if the features are available to all of you favorite OS.
> >
> > BTDT.
> >
> > BTW, i've tried a ZFS Package for Windows 1-2 years ago, that worked in
> > my test case..
> > https://openzfsonwindows.org/
> >
> > For my camera sd card i use EXFAT, there's a pkg on OI available (built
> > from https://github.com/relan/exfat.git - uses libFUSE)
> >
> >
> > Regards,
> >
> > Stephan
> >
> >
> > _______________________________________________
> > oi-dev mailing list
> > oi-dev at openindiana.org
> > https://openindiana.org/mailman/listinfo/oi-dev
> >
>
> I also tried sharing a zfs partition over Linux and OpenIndiana
> a few years ago, with consistent uids and gids across oses.
>
> It worked, but it was a pita to have to do zpool import/export
> when switching oses. Maybe this can be avoided, but I did not
> know how.
>
> Jean-Pierre
>
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