[SOLVED] 4.18.0-1-ARCH aarch64 - no btrfs ?

[ufo6000]

At first, a big thanks for providing the aarch64 kernel for the rp3+

Did I see right, the kernel does not support btrfs ?
$this->bbcode_second_pass_code('', '
[root@alarm ~]# egrep -i "btrfs|ext" /proc/filesystems
ext3
ext2
ext4
')
So I can't put the root filesystem on a BTRFS partition ? Or is there a workaround ?

On an armv7l there is btrfs included.

Thanks very much!

[TheSaint]

Haven't you consider to make your own kernel ?
The wiki might guide you to make one

[ufo6000]

ah - no need anymore:
$this->bbcode_second_pass_code('', '
[root@p6 ~]# uname -a
Linux p6 4.18.5-1-ARCH #1 SMP Fri Aug 24 18:33:45 MDT 2018 aarch64 GNU/Linux
[root@p6 ~]# egrep -i "btrfs|ext" /proc/filesystems
ext3
ext2
ext4
btrfs
')
Updating the boot.txt with rootfstype=btrfs rootflags=subvol=@ work fine. The root filesystem is now BTRFS

[summers]

btrfs is usually loaded as a module, so it only shows up as a filesystem when the module is loaded.

So it should work as long as you make your your initrd includes btrfs.

Me I've always had root as ext4 and only /home as btrfs ...

[ufo6000]

In my 2nd try I added

$this->bbcode_second_pass_code('', '
# /etc/mkinitcpio.conf
MODULES=(btrfs)
')
to be sure, also I updated the kernel. So I blamed only the kernel update to be resposible

Thanks for the explanation!