Re: [Qemu-arm] 9p as rootfs

[mar.krzeminski]

And most important, while mounting as roots, error is:

[    1.086235] device: '9p-1': device_add
[    1.087859] 9pnet_virtio: no channels available
[    1.091619] device: '9p-1': device_unregister
[    1.092783] device: '9p-1': device_create_release
[    1.093534] VFS: Cannot open root device "host" or unknown-block(0,0): error -2

Thanks,
Marcin

W dniu 23.09.2016 o 21:38, mar.krzeminski pisze:

Hello,

I have a problem in my custom arm machine to use 9p fs as a rootfs.

9p command line i qemu:

-device virtio-9p-device,fsdev=host_fs,mount_tag=hostfs -fsdev local,id=host_fs,security_model=none,path=/work/rootfs

Kernel cmd line:

--append "root=hostfs rootfstype=9p rootflags=trans=virtio noinitrd console=ttyS3,115200"

Device tree entry:

        virtio: address@hidden {
            compatible = "virtio,mmio";
            reg = <0xff0a4000 0x200>;
            interrupts = <0 72 1>;
            status = "okay";
        };


 I can mount this fs from kernel using fstab entry:
hostfs               /mnt/host            9p         trans=virtio          0  0

Do you have any idea what am I doing wrong?

Thanks,
Marcin