ramfs

ramfs

[Dmitriy Tochansky]

Hello!

Im trying to use embedded ramdisk on boot.
The error is:

[4294668.794000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) 

In make menuconfig I pass to initrdfs directory with my root("/mips/root"),
there are no errors on make. 
Ramdisk size set to 7777k
([4294668.691000] RAMDISK driver initialized: 2 RAM disks of 7777K size 1024 blocksize)

populate_rootfs() works fine:


[4294667.502000] init/initramfs.c void __init populate_rootfs(void);
[4294668.313000] checking if image is initramfs... it is

then on do_mounts in void __init mount_block_root(char *name, int flags)
it tryes to mount initrd with no result. :( As final:


[4294668.794000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)

Any ideas?

Kernel from cvs(yesterday updated).

Which type of fs is initrd? AFAIK gen_init_cpio just generates cpio archive with my root. Seems like it unpacked fine but who did mkfs on /dev/ram0?


-- 
Dmitriy Tochansky
toch@dfpost.ru
JID: dtoch@jabber.ru

Re: ramfs

[Franck Bui-Huu]

Hi

Dmitriy Tochansky wrote:

>Hello!
>
>Im trying to use embedded ramdisk on boot.
>The error is:
>
>[4294668.794000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) 
>
>In make menuconfig I pass to initrdfs directory with my root("/mips/root"),
>there are no errors on make. 
>Ramdisk size set to 7777k
>([4294668.691000] RAMDISK driver initialized: 2 RAM disks of 7777K size 1024 blocksize)
>
>populate_rootfs() works fine:
>
>
>[4294667.502000] init/initramfs.c void __init populate_rootfs(void);
>[4294668.313000] checking if image is initramfs... it is
>  
>
why using initramfs with initrd ?

>then on do_mounts in void __init mount_block_root(char *name, int flags)
>it tryes to mount initrd with no result. :( As final:
>
>
>[4294668.794000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)
>
>Any ideas?
>  
>
maybe try to add in your kernel command option: "rootfstype=ramfs"

>Kernel from cvs(yesterday updated).
>
>Which type of fs is initrd? AFAIK gen_init_cpio just generates cpio archive with my root. Seems like it unpacked fine but who did mkfs on /dev/ram0?
>
>
>  
>
initrd fs depends on how your initrd image is built.
initramfs fs is ramfs.

cheers,

                Franck


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