On Wed, Aug 18, 2021 at 03:25:58PM +0200, ChrisO wrote: > On Wed, Aug 18, 2021 at 12:26:11PM +0200, Lukasz Majewski wrote: > > 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 > > > > -- > > > > DENX Software Engineering GmbH, Managing Director: Wolfgang Denk > > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > > Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: [email protected] > > Hallo Lukasz > > My system in question is not an embeded one. I just stated to play with an > Odroid-HC4 and Armbian. > It has two SATA connectors, boots from a SD card. > All computer I use which have more than one disk connected are set-up with > software RAID and LVM on top of it. > ZFS has both build-in it's why I asked. > Currently I have on this HC4 two partitions on each disk, the smaller ones > are in RAID1 and host root FS, the bigger ones are in a mirrored Zpool. It > works OK, it would be nicer to have just one filesystem, though. > > Still not sure, it can or cannot be done?
The answer is that yes, today we have zfs support in U-Boot. And it would be great if someone wanted to actively test and maintain it. That I had to double check just now that the patches you mentioned had been merged should also speak to the potential state of the code. -- Tom
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