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

[Atiq Rahman]

Hi,
For those of you using ZFS on portable devices (e.g., laptops), which ZFS
features do you enable to improve battery life? Everything else works great,
but with my current ZFS configuration, my laptop’s battery life has dropped
to
a quarter of what it used to be.


on root with zfs setting, here's my override,

$ sudo cat /etc/modprobe.d/zfs.conf
options zfs zfs_arc_max=2147483648
options zfs zfs_txg_timeout=10

as per above, arc max is set 2GB (my main memory is 32GB)


On Wed, Aug 27, 2025 at 2:42 PM Atiq Rahman <atiqcx at gmail.com> wrote:

> So, I did that (created a zfs pool using illumos) and I am able to
> access it from everywhere. It's been working great so far!
>
> Thanks to all of you for the suggestions!
>
> Atiq
>
>
> On Sat, Aug 16, 2025 at 9:31 PM Atiq Rahman <atiqcx at gmail.com> wrote:
>
>> Thanks Bob.
>>
>> Sounds like a good starting point. I will create the pool using OI and
>> see if I am able to access it from other OSs.
>>
>> Atiq
>>
>>
>> On Sat, Aug 16, 2025 at 5:09 PM Bob Friesenhahn <
>> graphicsmagick.project at gmail.com> 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).
>>>>
>>>
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