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Re: fsck fails during boot with 2.6.9-34.0.1.EL kernel because root filesystem is already rw mounted



Hi Nitin,

Thanks for your answer. My /etc/fstab contains the following line for the root filesystem:

/dev/VolGroup00/LogVol01 / ext3 rw 1 1 

However, I changed it to 

/dev/VolGroup00/LogVol01 / ext3 defaults 1 1 

and rebooted, but the same problem hapened.

It looks like in the early stage of the booting, when the kernel is using the initrd to load the
modules, the /etc/fstab does not matter.

I still do not understand why in my new initrd file, with the new kernel, the root filesystem is
nounted read-write, instead of read-only. 

Regards,
Floriola

--- Nitin B <forumswatch gmail com> wrote:

> Boot your system in single user mode using new kernel and check /etc/fstab.
> If it doesn't have default options edit it and add "defaults" . Oce this is
> done reboot.
> 
> 
> 
> On 25/06/06, Floriola <floriola2000 yahoo com> wrote:
> >
> > Hi,
> >
> > I have a RHES4 server running kernel version 2.6.9-34.EL. During this
> > night, I have updated to
> > latest kernel-2.6.9-34.0.1.EL. The problem is that with the new kernel, my
> > linux is not booting
> > anymore. During the boot, I have the following error:
> >
> > Checking root filesystem
> > [/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a /dev/VolGroup00/LogVol01
> > /dev/VolGroup00/LogVol01 is mounted. e2fsck: Cannot continue, aborting.
> >
> >
> > [FAILED]
> >
> > *** An error occurred during the file system check.
> > *** Dropping you to a shell; the system will reboot
> > *** when you leave the shell.
> > *** Warning -- SELinux is active
> > *** Disabling security enforcement for system recovery.
> > *** Run 'setenforce 1' to reenable.
> > Give root password for maintenance
> > (or type Control-D to continue):
> >
> > Luckily, I still have the old kernel installed, so I booted with the old
> > one, without any
> > problems.
> >
> > I dig a bit more, and I found the following:
> >
> > In the old 2.6.9-34.EL kernel that I am able to boot with, the init script
> > in the initrd contains
> > the following mount command:
> >
> > mount -o defaults --ro -t ext2 /dev/root /sysroot
> >
> > while with the new kernel 2.6.9-34.0.1.EL that I have just installed, the
> > init file in the initrd
> > contanin the following command:
> >
> > mount -o rw --ro -t ext2 /dev/root /sysroot
> >
> > So this is why with the new kernel, my root filesystem si already mounted
> > read-write during the
> > boot process, before the fsck.
> >
> > However, this looks quite weird. First, I cannot find anywhere what this
> > --ro means (there are no
> > info about this option in the man page). Most probably, it means that the
> > filesystem should be
> > mount read-only, but then why in the new kernel the mount command contains
> > also "-o rw" option?
> >
> > And why in the previous kernel, the root filesystem was mounted with the
> > "-o defaults" option, and
> > the new one is mounted with the "-o rw" option?
> >
> > Any ideeas?
> >
> > Thank you in advance,
> >
> > Floriola
> >
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