u-boot & ZFS

[Lukasz Majewski]

Hi ChrisO,

> On Tue, Aug 17, 2021 at 08:35:14PM -0400, Tom Rini wrote:
> > On Tue, Aug 17, 2021 at 06:03:10PM +0200, ChrisO wrote:
> >   
> > > Hi
> > > 
> > > I searched for u-boot ZFS references and all I found was several
> > > years old, but I suppose u-boot can cope with ZFS. So, my
> > > question is: is it possible to boot Linux from ZFS or at least
> > > boot from let's say SD-card with ext4 FS and mount a ZFS volume
> > > as root filesystem? I had a look at Armbian, installed all
> > > needed, user-space and kernel modules. After booting from SD card
> > > I can use ZFS on attached SATA SSD w/o any problem. I also see
> > > ZFS libs and kernel modules in initrd,  so it looks like the
> > > necessary things are there. Don't know where to start. I would be
> > > very thankful for any help.  
> > 
> > The general easy answer is to have /boot that is separate from the
> > rootfs and using a filesystem more commonly supported.
> > 
> > -- 
> > Tom  
> 
> Sounds like: go away kid, play with your old toys ;-)
> I was doing it the traditional way for long time, now wanted to try
> something new. Isn't it how we progress? I came to this list hoping
> to get an answer to my question. I know, most of you on this list
> have more important things to do. But giving me some advice could
> possibly result in me giving something back.
> 

Similar question I saw on OpenEmbedded/Yocto ML recenly. The answer
there was that "ZFS or ZOL is _not_ [*] commonly used on embedded
systems, so no support was needed" 

If find this topic interesting, then the community will try to help
when you provide any patches for review.

However, considering the above, it may be hard for any _exact_
guidelines.


Note:
[*] - Personally, I didn't saw any usage of ZFS on embedded systems.

> Thanks,
> Chris




Best regards,

Lukasz Majewski

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