I apologies for asking this small question, but I have looked at all the places, searched the google and done all what I could for last 2 days.
When trying to bring up uml it gives the following..
**************************************************************************************
VFS: Cannot open root device "98:0" or unknown-block(98,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(98,0)
EIP: 0073:[<ffffe410>] CPU: 0 Not tainted ESP: 007b:b7dfbfa8 EFLAGS: 00000246
Not tainted
EAX: 00000000 EBX: 000027e0 ECX: 00000013 EDX: 000027e0
ESI: 000027dc EDI: 00000011 EBP: b7dfbfc4 DS: 007b ES: 007b
08597b20: [<08084b28>] show_regs+0xb4/0xb9
08597b4c: [<080625c8>] panic_exit+0x25/0x3f
08597b60: [<08097ab1>] notifier_call_chain+0x1a/0x31
08597b80: [<08097b38>] atomic_notifier_call_chain+0x11/0x13
08597b94: [<0808c372>] panic+0x52/0xce
08597bb4: [<0804991e>] mount_block_root+0xee/0xfd
08597c08: [<08049a37>] mount_root+0x4c/0x54
08597c2c: [<08049af7>] prepare_namespace+0xb8/0xec
08597c3c: [<0805df23>] init+0x61/0x116
08597c48: [<0807e7ae>] run_kernel_thread+0x42/0x4a
08597cf8: [<08062a1b>] new_thread_handler+0x81/0xab
08597d1c: [<ffffe420>] _etext+0xf7c90404/0x0
<3>Trying to free free IRQ2
Trying to free free IRQ3
**************************************************************************************
Based on the net I have verified the following...
A) ubd devices are present in the /dev directory of the root file system as follows..
[EMAIL PROTECTED]:~/uml/new_root_fs/dev> ls ubd* -al
brw-rw---- 1 root root 98, 0 2001-11-28 15:43 ubd0
ubd:
total 84
drwxr-xr-x 2 root root 4096 2001-11-28 15:43 .
drwxr-xr-x 18 deepsin users 77824 2006-08-21 15:58 ..
brw-rw---- 1 root root 98, 0 2001-11-28 15:43 0
brw-rw---- 1 root root 98, 1 2001-11-28 15:43 1
brw-rw---- 1 root root 98, 2 2001-11-28 15:43 2
brw-rw---- 1 root root 98, 3 2001-11-28 15:43 3
brw-rw---- 1 root root 98, 4 2001-11-28 15:43 4
brw-rw---- 1 root root 98, 5 2001-11-28 15:43 5
brw-rw---- 1 root root 98, 6 2001-11-28 15:43 6
brw-rw---- 1 root root 98, 7 2001-11-28 15:43 7
Means I didnt have /dev/ubd0 but instead only /dev/ubd/0. So I copied one to /dev/ubd0. Still the same problem.
B) ext2 is built into the kernel ( this I got this as a mistake, from a chat session that came up in google search).
The .config has the following..
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
CONFIG_EXT2_FS_SECURITY=y
And off course the root file system is in ext2 format.
C) I am starting by the following command..
./linux-2.6.17/linux ubd0=./root_fs
I have also tried without ubd0 as root_fs is in cwd but the same problem.
Any help/pointers would be appreciated.
--
Thanks a lot in advance
Dp
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