Rootfs on f2fs or btrfs, is possible?

Hello,
I would like to try using f2fs or btrfs as root filesystem of my usb key for my goflex.
Is it possible?
What do I need to put on uboot?

Thanks,
Mario

You can use f2fs as rootfs, but the /boot needs to be in ext2 or ext3 partition. So

- create 2 partitions on your USB thumb using fdisk. 1st partition is bootable Linux, second is normal Linux.
- format the 1st partition as ext2 or ext3
- format the 2nd partition as f2fs
- extract rootfs to 2nd partition (see rootfs download and instruction in my signature)
- copy /boot to 1st partition as root (asuming they are mounted at /media):
cp -aR /media/part2/boot /media/part1/
- label 2nd partition rootfs
- sync

Boot with this USB key. And let us know!

-bodhi
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So I gave this a try today. I basically followed the instruction from bodhi, but instead of download a new rootfs, I just used the one that I already setup. Basically I made the ext3 and f2fs partitions, cp -a to copy the rootfs to f2fs partition, and the cp -a to move the /boot to the ext3 partition.

The system didn't boot up successfully. From the netconsole I can see that the uboot was able to load the kernel and then there was no output.

I am wondering what could go wrong. Should I edit the fstab somehow? For fstab, should also mount the ext3 partition to /boot?

auzn Wrote:
-------------------------------------------------------
> So I gave this a try today. I basically followed
> the instruction from bodhi, but instead of
> download a new rootfs, I just used the one that I
> already setup. Basically I made the ext3 and f2fs
> partitions, cp -a to copy the rootfs to f2fs
> partition, and the cp -a to move the /boot to the
> ext3 partition.
>

That should be cp -aR

> The system didn't boot up successfully. From the
> netconsole I can see that the uboot was able to
> load the kernel and then there was no output.
>

netconsole does not output more after the kernel is starting. Unless you explicitly set it up to output more in Debian/Arch.

> I am wondering what could go wrong. Should I edit
> the fstab somehow? For fstab, should also mount
> the ext3 partition to /boot?

No. The f2fs partition needs to have a label rootfs, and the u-boot envs need use that for root. See explanation here:
http://forum.doozan.com/read.php?3,19093

-bodhi
===========================
Forum Wiki
bodhi's corner (buy bodhi a beer)

Quick question about cp -aR, what is the difference between -a and -aR? I see on the man page of cp that -a means -dR --preserve=all, so I thought -a and -aR has the same effect.



Edited 1 time(s). Last edit at 02/01/2016 02:31PM by auzn.