And another question,
since the kernel is booting with initramfs support,
is it normal that it tries to run /init instead of bin/init or sbin/init

To be more precise, it runs this:

    if (ramdisk_execute_command) {
        run_init_process(ramdisk_execute_command);           <---this
        printk(KERN_WARNING "Failed to execute %s\n",
                ramdisk_execute_command);
    }

instead of this:

    run_init_process("/sbin/init");
    run_init_process("/etc/init");
    run_init_process("/bin/init");
    run_init_process("/bin/sh");

is it normal?

Thanks!

2012/8/30 stl [off-list ref]

Thanks Rahul for your very quick answer.
Glad to hear this.
So, when does the message "VFS: Mounted root" appear?
Maybe when using init ramdisk (initrd) support?




2012/8/30 Rahul Bedarkar [off-list ref]

quoted

yes root file system is mounted correctly. It is just it didn't find init.

On Thu, Aug 30, 2012 at 8:10 PM, stl [off-list ref] wrote:

quoted

Hello all,
if I try to boot Linux 2.6.37 by supplying a configuration file to the
kernel to create initramfs_data.cpio,
(without any compression), is it normal that the kernel doesn't print

the

quoted

well known message:

VFS: Mounted root (<type> filesystem)

even if the boot reaches the point where it tries to run init

executable?

quoted

Does it mean that my rootfs is not correctly mounted?

Here is the kernel output printed during the boot:

<5>[    0.000000] Linux version 2.6.37+ (gcc version 4.6.3 20120816

(GCC) )

quoted

#57 Thu Aug 30 12:00:00 CEST 2012
[    0.000000] Built 1 zonelists in Zone order, mobility grouping off.
Total pages: 2032
[    0.000000] Kernel command line:
[    0.000000] PID hash table entries: 32 (order: -5, 128 bytes)
[    0.000000] Dentry cache hash table entries: 1024 (order: 0, 4096

bytes)

quoted

[    0.000000] Inode-cache hash table entries: 1024 (order: 0, 4096

bytes)

quoted

[    0.000000] Memory: 7656k/8196k available (1098k kernel code, 536k
reserved, 2096117k data, 12k init)
[    0.000000] SLUB: Genslabs=15, HWalign=16, Order=0-3, MinObjects=0,
CPUs=1, Nodes=1
[    0.000000] NR_IRQS:64
[    0.000000] Timer start: timer interrupt every 10 ms
[    0.000000] console [ttyS0] enabled
[42949372.980000] Calibrating delay loop... 0.00 BogoMIPS (lpj=0)
[42949373.180000] pid_max: default: 32768 minimum: 301
[42949373.200000] Security Framework initialized
[42949373.210000] Mount-cache hash table entries: 512
[42949373.260000] khelper used greatest stack depth: 7548 bytes left
[42949373.340000] kworker/u:0 used greatest stack depth: 7324 bytes left
[42949373.500000] bio: create slab <bio-0> at 0
[42949373.630000] kworker/u:0 used greatest stack depth: 7260 bytes left
[42949374.630000] kworker/u:0 used greatest stack depth: 7180 bytes left
[42949375.250000] VFS: Disk quotas dquot_6.5.2
[42949375.270000] Dquot-cache hash table entries: 1024 (order 0, 4096

bytes)

quoted

[42949375.390000] msgmni has been set to 16
[42949375.420000] Block layer SCSI generic (bsg) driver version 0.4

loaded

quoted

(major 253)
[42949375.430000] io scheduler noop registered
[42949375.440000] io scheduler deadline registered
[42949375.460000] io scheduler cfq registered (default)
[42949375.490000] Architecture Specific Serial Driver
[42949375.500000] ttyS0 at MMIO 0x40001000 (irq = 5) is a arch_uart
[42949375.700000] loop: module loaded
[42949375.720000] mice: PS/2 mouse device common for all mice
[42949375.780000] ------------[ cut here ]------------
[42949375.800000] WARNING: at fs/proc/generic.c:589 .LBE364+0x0/0x2()
[42949375.810000] proc_dir_entry '/proc/schedstat' already registered
[42949375.820000] Modules linked in:
[42949375.830000] ---[ end trace 31baa4bbf69a8bbc ]---
[42949375.850000] Failed to execute /init
[42949375.870000] Kernel panic - not syncing: No init found.  Try

passing

quoted

init= option to kernel. See Linux Documentation/init.txt for guidance.

In my opinion, it seems to be correct because the following message

doesn't

quoted

appear:

Warning: unable to open an initial console

This means that the file /dev/console has been found, so that the

rootfs has

quoted

been correctly mounted, isn't it?


Thanks in advance for your help!


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