Messages in this thread | | | From | "colin" <> | Subject | Strange! Cannot use JFFS2 as root | Date | Wed, 20 Oct 2004 22:03:45 +0800 |
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Hi all, I had booted up Linux with nfs root, and write a JFFS2 image to /dev/mtd1. Here is my cmdline for Kernel: go 0x80305018 root=/dev/nfs rw nfsroot=172.19.26.145:/nfs/rootfs ip=172.19.27.193::172.19.27.254:255.255.254.0::: mtdparts=maltaflash:1536k(ldr),2048k(root)
After writing the JFFS2 image to /dev/mtd1, I can mount /dev/mtdblcok1 to some directory. mount -t jffs2 /dev/mtdblock1 /mnt
Next, I hope to boot up Linux with JFFS2 root, and try to give this cmdline to Kernel: go 0x80305018 rootfstype=jffs2 mtdparts=maltaflash:1536k(ldr),2048k(root) root=/dev/mtdblock1
and the Kernel would complain me about no root: VFS: Unable to mount root fs via NFS, trying floppy. Kernel panic: VFS: Unable to mount root fs on unknown-block(2,0)
I traced the code and found that when passing "/dev/mtdblock1" to name_to_dev_t() in do_mounts.c, it would return 0 at every try_name(), which will fail at open() with the path "/sys/block/%s/dev".
What's the problem? Could anyone tell me?
Thanks and regards, Colin
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