[CentOS] Re: dying hd on live legacy system...

[Scott Silva]

on 4-25-2008 10:35 AM Jason Pyeron spake the following:
> 
>> -----Original Message-----
>> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On
>> Behalf Of Jeff Larsen
>> Sent: Friday, April 25, 2008 1:16 PM
>> To: CentOS mailing list
>> Subject: Re: [CentOS] dying hd on live legacy system...
>>
>> On Fri, Apr 25, 2008 at 10:38 AM, Jason Pyeron <jpyeron-Zhu2GTxvAjk at public.gmane.org> wrote:
>>> We have an old 3.x server whose hd is dying (kernel: hda:
>> dma_timer_expiry:
>>>  dma status == 0x61) and accessing certain files just crashes the system
>> with
>>>  a reboot.
>>>
>>>  We have moved as many files to a nfs server as we could so simply.
>>>
>>>  The system has been heavily modified (all using rpms) from baseline.
>>>
>>>  What is the most practical method to replace the hard drive?
>> Install another drive (same size or larger), boot from CD in rescue
>> mode and use the dd utility to copy the old drive image to the new
>> disk (example: dd if=/dev/hda of=/dev/hdb). However, the failing
>> hardware could make this problematic. Then remove the dying disk and
>> install the new disk on the cable where the old disk was so that the
>> new disk is now /dev/hda.
>>
> 
> Tried this, I should have been more clear above. When I access certain
> sectors the machine reboots.
> 
> Ideas on how to do the duplication in this scenario?
> 
>> If you are lucky enough to succeed consider mirroring with Linux
>> software RAID or at least make a full backup.
>>
Did you try ddrescue?
http://www.gnu.org/software/ddrescue/ddrescue.html


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