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SubjectRe: 2.4.21 Floppy Fallback with NFS root ...
Hi!

> I'm curious, is it intentional that, if you select
> NFS support and NFS Root support, that the fact, that
> no nfs is available, or selected via boot options,
> automatically leads to a floppy boot?
>
> I would suggest the following trivial patch, to give
> the kernel compiler a chance to disable this 'feature'.
>
> please correct me if I'm talking nonsense ...

This might be okay for 2.5.X, but its definitely bad idea for
2.4.X. (User visible change without good reason).

> diff -NurbP --minimal linux-2.4.21/fs/Config.in linux-2.4.21-ffb/fs/Config.in
> --- linux-2.4.21/fs/Config.in Tue Dec 10 03:25:19 2002
> +++ linux-2.4.21-ffb/fs/Config.in Mon Jun 16 15:05:09 2003
> @@ -103,6 +103,7 @@
> dep_tristate 'NFS file system support' CONFIG_NFS_FS $CONFIG_INET
> dep_mbool ' Provide NFSv3 client support' CONFIG_NFS_V3 $CONFIG_NFS_FS
> dep_bool ' Root file system on NFS' CONFIG_ROOT_NFS $CONFIG_NFS_FS $CONFIG_IP_PNP
> + dep_bool ' Floppy Fallback' CONFIG_FLOPPY_FALLBACK $CONFIG_ROOT_NFS
>
> dep_tristate 'NFS server support' CONFIG_NFSD $CONFIG_INET
> dep_mbool ' Provide NFSv3 server support' CONFIG_NFSD_V3 $CONFIG_NFSD
> diff -NurbP --minimal linux-2.4.21/init/do_mounts.c linux-2.4.21-ffb/init/do_mounts.c
> --- linux-2.4.21/init/do_mounts.c Fri Jun 13 17:49:28 2003
> +++ linux-2.4.21-ffb/init/do_mounts.c Mon Jun 16 15:00:23 2003
> @@ -754,8 +754,10 @@
> printk("VFS: Mounted root (nfs filesystem).\n");
> return;
> }
> +# ifdef CONFIG_FLOPPY_FALLBACK
> printk(KERN_ERR "VFS: Unable to mount root fs via NFS, trying floppy.\n");
> ROOT_DEV = MKDEV(FLOPPY_MAJOR, 0);
> +# endif
> }
> #endif
> devfs_make_root(root_device_name);
>
> -
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