[CentOS] mount the wrong device after system recovery

Tue Feb 8 21:31:32 UTC 2011
Xinhuan Zheng <xzheng at christianbook.com>

My grub.conf is pointing to sdb1 for /. I've corrected to use
/dev/vg0/lv1. But after rebooting, I am getting the same error. I guess
I need to rebuild initrd.img file. How do I rebuild that file?

Thanks,

- xinhuan

-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
Behalf Of Robert Heller
Sent: Tuesday, February 08, 2011 2:59 PM
To: CentOS mailing list
Cc: CentOS mailing list
Subject: Re: [CentOS] mount the wrong device after system recovery

At Tue, 8 Feb 2011 13:51:32 -0500 CentOS mailing list
<centos at centos.org> wrote:

> 
> Content-Class: urn:content-classes:message
> 
> 
> Hi,
> 
>  
> 
> I am recovering a CentOS 5.4 system. I've copied all partitions into
the
> recovery system. I've installed grub boot loader. However, the
original
> system is using /dev/sdb1 for root (/), while the recovery system is
> using LVM (/dev/vg0/lv1) for root (/). When recovery system boots, I
got
> the panic error:
> 
>  
> 
> *         Mounting /dev/sdb1 on /sysroot
> 
> *         Mount: mounting /dev/sdb1 on /sysroot failed: No such file
or
> directory
> 
> *         Mount: mounting /dev on /sysroot/dev failed: No such file or
> directory
> 
> *         * switching / to /sysroot
> 
> *         Switch_root: bad newroot /sysroot
> 
> *         Kernel panic - not syncing: Attempted to kill init!
> 
>  
> 
> I've changed the recovery system fstab to use the correct devices. I
> deleted recovery system etc/lvm/cache/.cache file. But it still
doesn't
> work. What am I missing?

You need to rebuild the initrd and make sure the grub.conf file is
up-to-date (has the right thing for the root parameter).

> 
>  
> 
> Thanks,
> 
>  
> 
> -          xinhuan
> 
> MIME-Version: 1.0
> 
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> 
>                                                            

-- 
Robert Heller             -- 978-544-6933 / heller at deepsoft.com
Deepwoods Software        -- http://www.deepsoft.com/
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