can't start archlinuxarm with btrfs subvolume

[yuan]

Can anyone help me please, thanks, I've been trying all day

device: raspberry pi 4

stuck at [size=50]Net: etho: ethernet@7d580000
PCIe BRCH: link up, 5.0 Gbps x1 (SSC)
starting USB...
Bus xhci pei: Register 5000429 MbrPorts 5
Starting the controller
USB RHCI 1.00
scanning bus xhci_pci for devices... Unexpected XHCI event TRB, skipping...
BUG at drivers/usb/host/xhci-ring.c:503/abort_td()?
BUG![/size]




I created @ and @home subvolume in mmcblk0p2
then I modified fstab,config.txt,cmdline.txt file and added btrfs module into initramfs-linux.img

cmdline.txt [size=50]dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=UUID=ef87c4db-fce0-462c-8e40-ae270c20b9de rootfstype=btrfs rootflags=subvol=@ elevator=deadline rootwait[/size]

fstab [size=50]UUID=ef87c4db-fce0-462c-8e40-ae270c20b9de / btrfs rw,relatime,subvol=/@,compress=zstd 0 0

#/dev/mmcblk0p1
UUID=DF36-0448 /boot vfat defaluts 0 2

# /dev/mmcblk0p2
UUID=ef87c4db-fce0-462c-8e40-ae270c20b9de /home btrfs rw,relatime,subvol=/@home,compress=zstd 0 0
[/size]

[chriswyatt]

I'm successfully using BTRFS here, and I'm also using a subvolume for root and home. Are you sure this issue relates to BTRFS?

[technosf]

btrfs has to be compiled into Uboot if root partition "/" is BTRFS.

I have "/" as ext4 as, afaik, uboot isn't compiled with btrfs, so - ext4, then /root etc as btrfs works for me.