Is my rootfs correctly mounted?

2012-08-30 Thread stl 
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
well known message:

VFS: Mounted root (type filesystem)

even if the boot reaches the point where it tries to run init executable?
Does it mean that my rootfs is not correctly mounted?

Here is the kernel output printed during the boot:

5[0.00] Linux version 2.6.37+ (gcc version 4.6.3 20120816 (GCC) )
#57 Thu Aug 30 12:00:00 CEST 2012
[0.00] Built 1 zonelists in Zone order, mobility grouping off.
Total pages: 2032
[0.00] Kernel command line:
[0.00] PID hash table entries: 32 (order: -5, 128 bytes)
[0.00] Dentry cache hash table entries: 1024 (order: 0, 4096 bytes)
[0.00] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)
[0.00] Memory: 7656k/8196k available (1098k kernel code, 536k
reserved, 2096117k data, 12k init)
[0.00] SLUB: Genslabs=15, HWalign=16, Order=0-3, MinObjects=0,
CPUs=1, Nodes=1
[0.00] NR_IRQS:64
[0.00] Timer start: timer interrupt every 10 ms
[0.00] console [ttyS0] enabled
[42949372.98] Calibrating delay loop... 0.00 BogoMIPS (lpj=0)
[42949373.18] pid_max: default: 32768 minimum: 301
[42949373.20] Security Framework initialized
[42949373.21] Mount-cache hash table entries: 512
[42949373.26] khelper used greatest stack depth: 7548 bytes left
[42949373.34] kworker/u:0 used greatest stack depth: 7324 bytes left
[42949373.50] bio: create slab bio-0 at 0
[42949373.63] kworker/u:0 used greatest stack depth: 7260 bytes left
[42949374.63] kworker/u:0 used greatest stack depth: 7180 bytes left
[42949375.25] VFS: Disk quotas dquot_6.5.2
[42949375.27] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[42949375.39] msgmni has been set to 16
[42949375.42] Block layer SCSI generic (bsg) driver version 0.4 loaded
(major 253)
[42949375.43] io scheduler noop registered
[42949375.44] io scheduler deadline registered
[42949375.46] io scheduler cfq registered (default)
[42949375.49] Architecture Specific Serial Driver
[42949375.50] ttyS0 at MMIO 0x40001000 (irq = 5) is a arch_uart
[42949375.70] loop: module loaded
[42949375.72] mice: PS/2 mouse device common for all mice
[42949375.78] [ cut here ]
[42949375.80] WARNING: at fs/proc/generic.c:589 .LBE364+0x0/0x2()
[42949375.81] proc_dir_entry '/proc/schedstat' already registered
[42949375.82] Modules linked in:
[42949375.83] ---[ end trace 31baa4bbf69a8bbc ]---
[42949375.85] Failed to execute /init
[42949375.87] Kernel panic - not syncing: No init found.  Try passing
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
appear:

Warning: unable to open an initial console

This means that the file /dev/console has been found, so that the rootfs
has been correctly mounted, isn't it?


Thanks in advance for your help!
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Re: Is my rootfs correctly mounted?

2012-08-30 Thread stl 
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 rpal...@gmail.com

 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 st.lamber...@gmail.com wrote:
  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
  well known message:
 
  VFS: Mounted root (type filesystem)
 
  even if the boot reaches the point where it tries to run init executable?
  Does it mean that my rootfs is not correctly mounted?
 
  Here is the kernel output printed during the boot:
 
  5[0.00] Linux version 2.6.37+ (gcc version 4.6.3 20120816
 (GCC) )
  #57 Thu Aug 30 12:00:00 CEST 2012
  [0.00] Built 1 zonelists in Zone order, mobility grouping off.
  Total pages: 2032
  [0.00] Kernel command line:
  [0.00] PID hash table entries: 32 (order: -5, 128 bytes)
  [0.00] Dentry cache hash table entries: 1024 (order: 0, 4096
 bytes)
  [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096
 bytes)
  [0.00] Memory: 7656k/8196k available (1098k kernel code, 536k
  reserved, 2096117k data, 12k init)
  [0.00] SLUB: Genslabs=15, HWalign=16, Order=0-3, MinObjects=0,
  CPUs=1, Nodes=1
  [0.00] NR_IRQS:64
  [0.00] Timer start: timer interrupt every 10 ms
  [0.00] console [ttyS0] enabled
  [42949372.98] Calibrating delay loop... 0.00 BogoMIPS (lpj=0)
  [42949373.18] pid_max: default: 32768 minimum: 301
  [42949373.20] Security Framework initialized
  [42949373.21] Mount-cache hash table entries: 512
  [42949373.26] khelper used greatest stack depth: 7548 bytes left
  [42949373.34] kworker/u:0 used greatest stack depth: 7324 bytes left
  [42949373.50] bio: create slab bio-0 at 0
  [42949373.63] kworker/u:0 used greatest stack depth: 7260 bytes left
  [42949374.63] kworker/u:0 used greatest stack depth: 7180 bytes left
  [42949375.25] VFS: Disk quotas dquot_6.5.2
  [42949375.27] Dquot-cache hash table entries: 1024 (order 0, 4096
 bytes)
  [42949375.39] msgmni has been set to 16
  [42949375.42] Block layer SCSI generic (bsg) driver version 0.4
 loaded
  (major 253)
  [42949375.43] io scheduler noop registered
  [42949375.44] io scheduler deadline registered
  [42949375.46] io scheduler cfq registered (default)
  [42949375.49] Architecture Specific Serial Driver
  [42949375.50] ttyS0 at MMIO 0x40001000 (irq = 5) is a arch_uart
  [42949375.70] loop: module loaded
  [42949375.72] mice: PS/2 mouse device common for all mice
  [42949375.78] [ cut here ]
  [42949375.80] WARNING: at fs/proc/generic.c:589 .LBE364+0x0/0x2()
  [42949375.81] proc_dir_entry '/proc/schedstat' already registered
  [42949375.82] Modules linked in:
  [42949375.83] ---[ end trace 31baa4bbf69a8bbc ]---
  [42949375.85] Failed to execute /init
  [42949375.87] Kernel panic - not syncing: No init found.  Try passing
  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
  appear:
 
  Warning: unable to open an initial console
 
  This means that the file /dev/console has been found, so that the rootfs
 has
  been correctly mounted, isn't it?
 
 
  Thanks in advance for your help!
 
 
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Re: Is my rootfs correctly mounted?

2012-08-30 Thread Rahul Bedarkar 
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 st.lamber...@gmail.com wrote:
 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
 well known message:

 VFS: Mounted root (type filesystem)

 even if the boot reaches the point where it tries to run init executable?
 Does it mean that my rootfs is not correctly mounted?

 Here is the kernel output printed during the boot:

 5[0.00] Linux version 2.6.37+ (gcc version 4.6.3 20120816 (GCC) )
 #57 Thu Aug 30 12:00:00 CEST 2012
 [0.00] Built 1 zonelists in Zone order, mobility grouping off.
 Total pages: 2032
 [0.00] Kernel command line:
 [0.00] PID hash table entries: 32 (order: -5, 128 bytes)
 [0.00] Dentry cache hash table entries: 1024 (order: 0, 4096 bytes)
 [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)
 [0.00] Memory: 7656k/8196k available (1098k kernel code, 536k
 reserved, 2096117k data, 12k init)
 [0.00] SLUB: Genslabs=15, HWalign=16, Order=0-3, MinObjects=0,
 CPUs=1, Nodes=1
 [0.00] NR_IRQS:64
 [0.00] Timer start: timer interrupt every 10 ms
 [0.00] console [ttyS0] enabled
 [42949372.98] Calibrating delay loop... 0.00 BogoMIPS (lpj=0)
 [42949373.18] pid_max: default: 32768 minimum: 301
 [42949373.20] Security Framework initialized
 [42949373.21] Mount-cache hash table entries: 512
 [42949373.26] khelper used greatest stack depth: 7548 bytes left
 [42949373.34] kworker/u:0 used greatest stack depth: 7324 bytes left
 [42949373.50] bio: create slab bio-0 at 0
 [42949373.63] kworker/u:0 used greatest stack depth: 7260 bytes left
 [42949374.63] kworker/u:0 used greatest stack depth: 7180 bytes left
 [42949375.25] VFS: Disk quotas dquot_6.5.2
 [42949375.27] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
 [42949375.39] msgmni has been set to 16
 [42949375.42] Block layer SCSI generic (bsg) driver version 0.4 loaded
 (major 253)
 [42949375.43] io scheduler noop registered
 [42949375.44] io scheduler deadline registered
 [42949375.46] io scheduler cfq registered (default)
 [42949375.49] Architecture Specific Serial Driver
 [42949375.50] ttyS0 at MMIO 0x40001000 (irq = 5) is a arch_uart
 [42949375.70] loop: module loaded
 [42949375.72] mice: PS/2 mouse device common for all mice
 [42949375.78] [ cut here ]
 [42949375.80] WARNING: at fs/proc/generic.c:589 .LBE364+0x0/0x2()
 [42949375.81] proc_dir_entry '/proc/schedstat' already registered
 [42949375.82] Modules linked in:
 [42949375.83] ---[ end trace 31baa4bbf69a8bbc ]---
 [42949375.85] Failed to execute /init
 [42949375.87] Kernel panic - not syncing: No init found.  Try passing
 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
 appear:

 Warning: unable to open an initial console

 This means that the file /dev/console has been found, so that the rootfs has
 been correctly mounted, isn't it?


 Thanks in advance for your help!


 ___
 Kernelnewbies mailing list
 Kernelnewbies@kernelnewbies.org
 http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies


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Re: Is my rootfs correctly mounted?

2012-08-30 Thread stl 
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 st.lamber...@gmail.com

 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 rpal...@gmail.com

 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 st.lamber...@gmail.com wrote:
  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
  well known message:
 
  VFS: Mounted root (type filesystem)
 
  even if the boot reaches the point where it tries to run init
 executable?
  Does it mean that my rootfs is not correctly mounted?
 
  Here is the kernel output printed during the boot:
 
  5[0.00] Linux version 2.6.37+ (gcc version 4.6.3 20120816
 (GCC) )
  #57 Thu Aug 30 12:00:00 CEST 2012
  [0.00] Built 1 zonelists in Zone order, mobility grouping off.
  Total pages: 2032
  [0.00] Kernel command line:
  [0.00] PID hash table entries: 32 (order: -5, 128 bytes)
  [0.00] Dentry cache hash table entries: 1024 (order: 0, 4096
 bytes)
  [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096
 bytes)
  [0.00] Memory: 7656k/8196k available (1098k kernel code, 536k
  reserved, 2096117k data, 12k init)
  [0.00] SLUB: Genslabs=15, HWalign=16, Order=0-3, MinObjects=0,
  CPUs=1, Nodes=1
  [0.00] NR_IRQS:64
  [0.00] Timer start: timer interrupt every 10 ms
  [0.00] console [ttyS0] enabled
  [42949372.98] Calibrating delay loop... 0.00 BogoMIPS (lpj=0)
  [42949373.18] pid_max: default: 32768 minimum: 301
  [42949373.20] Security Framework initialized
  [42949373.21] Mount-cache hash table entries: 512
  [42949373.26] khelper used greatest stack depth: 7548 bytes left
  [42949373.34] kworker/u:0 used greatest stack depth: 7324 bytes left
  [42949373.50] bio: create slab bio-0 at 0
  [42949373.63] kworker/u:0 used greatest stack depth: 7260 bytes left
  [42949374.63] kworker/u:0 used greatest stack depth: 7180 bytes left
  [42949375.25] VFS: Disk quotas dquot_6.5.2
  [42949375.27] Dquot-cache hash table entries: 1024 (order 0, 4096
 bytes)
  [42949375.39] msgmni has been set to 16
  [42949375.42] Block layer SCSI generic (bsg) driver version 0.4
 loaded
  (major 253)
  [42949375.43] io scheduler noop registered
  [42949375.44] io scheduler deadline registered
  [42949375.46] io scheduler cfq registered (default)
  [42949375.49] Architecture Specific Serial Driver
  [42949375.50] ttyS0 at MMIO 0x40001000 (irq = 5) is a arch_uart
  [42949375.70] loop: module loaded
  [42949375.72] mice: PS/2 mouse device common for all mice
  [42949375.78] [ cut here ]
  [42949375.80] WARNING: at fs/proc/generic.c:589 .LBE364+0x0/0x2()
  [42949375.81] proc_dir_entry '/proc/schedstat' already registered
  [42949375.82] Modules linked in:
  [42949375.83] ---[ end trace 31baa4bbf69a8bbc ]---
  [42949375.85] Failed to execute /init
  [42949375.87] Kernel panic - not syncing: No init found.  Try
 passing
  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
  appear:
 
  Warning: unable to open an initial console
 
  This means that the file /dev/console has been found, so that the
 rootfs has
  been correctly mounted, isn't it?
 
 
  Thanks in advance for your help!
 
 
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  Kernelnewbies@kernelnewbies.org
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Re: Is my rootfs correctly mounted?

2012-08-30 Thread Rahul Bedarkar 
On Thu, Aug 30, 2012 at 8:38 PM, stl st.lamber...@gmail.com wrote:
 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?

yes it is obvious from code (init/main.c) that it tries /init
/sbin/init  unless it fails to execute anything.
 Thanks!


 2012/8/30 stl st.lamber...@gmail.com

 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?
I don't know but if it fails to mount root file system or file system
is just a garbage with initramfs the well known log is kernel panic:
junk in compressed archive




 2012/8/30 Rahul Bedarkar rpal...@gmail.com

 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 st.lamber...@gmail.com wrote:
  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
  well known message:
 
  VFS: Mounted root (type filesystem)
 
  even if the boot reaches the point where it tries to run init
  executable?
  Does it mean that my rootfs is not correctly mounted?
 
  Here is the kernel output printed during the boot:
 
  5[0.00] Linux version 2.6.37+ (gcc version 4.6.3 20120816
  (GCC) )
  #57 Thu Aug 30 12:00:00 CEST 2012
  [0.00] Built 1 zonelists in Zone order, mobility grouping off.
  Total pages: 2032
  [0.00] Kernel command line:
  [0.00] PID hash table entries: 32 (order: -5, 128 bytes)
  [0.00] Dentry cache hash table entries: 1024 (order: 0, 4096
  bytes)
  [0.00] Inode-cache hash table entries: 1024 (order: 0, 4096
  bytes)
  [0.00] Memory: 7656k/8196k available (1098k kernel code, 536k
  reserved, 2096117k data, 12k init)
  [0.00] SLUB: Genslabs=15, HWalign=16, Order=0-3, MinObjects=0,
  CPUs=1, Nodes=1
  [0.00] NR_IRQS:64
  [0.00] Timer start: timer interrupt every 10 ms
  [0.00] console [ttyS0] enabled
  [42949372.98] Calibrating delay loop... 0.00 BogoMIPS (lpj=0)
  [42949373.18] pid_max: default: 32768 minimum: 301
  [42949373.20] Security Framework initialized
  [42949373.21] Mount-cache hash table entries: 512
  [42949373.26] khelper used greatest stack depth: 7548 bytes left
  [42949373.34] kworker/u:0 used greatest stack depth: 7324 bytes
  left
  [42949373.50] bio: create slab bio-0 at 0
  [42949373.63] kworker/u:0 used greatest stack depth: 7260 bytes
  left
  [42949374.63] kworker/u:0 used greatest stack depth: 7180 bytes
  left
  [42949375.25] VFS: Disk quotas dquot_6.5.2
  [42949375.27] Dquot-cache hash table entries: 1024 (order 0, 4096
  bytes)
  [42949375.39] msgmni has been set to 16
  [42949375.42] Block layer SCSI generic (bsg) driver version 0.4
  loaded
  (major 253)
  [42949375.43] io scheduler noop registered
  [42949375.44] io scheduler deadline registered
  [42949375.46] io scheduler cfq registered (default)
  [42949375.49] Architecture Specific Serial Driver
  [42949375.50] ttyS0 at MMIO 0x40001000 (irq = 5) is a arch_uart
  [42949375.70] loop: module loaded
  [42949375.72] mice: PS/2 mouse device common for all mice
  [42949375.78] [ cut here ]
  [42949375.80] WARNING: at fs/proc/generic.c:589 .LBE364+0x0/0x2()
  [42949375.81] proc_dir_entry '/proc/schedstat' already registered
  [42949375.82] Modules linked in:
  [42949375.83] ---[ end trace 31baa4bbf69a8bbc ]---
  [42949375.85] Failed to execute /init
  [42949375.87] Kernel panic - not syncing: No init found.  Try
  passing
  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
  appear:
 
  Warning: unable to open an initial console
 
  This means that the file /dev/console has been found, so that the
  rootfs has
  been correctly mounted, isn't it?
 
 
  Thanks in advance for your help!
 
 
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