Re: [Hampshire] ext4 and dd disc cloning

On 9 July 2010 00:15, John Cooper <lug@???> wrote:
> On 08/07/10 23:42, James Courtier-Dutton wrote:
>> On 8 July 2010 22:10, John Cooper <lug@???> wrote:
>>> My normal backup routine is to tar up my home directory files daily and
>>> then every month or so do a full disc clone using DD
>>>
>>> dd if=/dev/sda of=/dev/sdb bs=32M
>>>
>>> This has worked for years but now fails to copy all files on Fedora 13.
>>> Some directories like /sys have permissions ???? . I also tried
>>> clonezilla using partclone which took 24 hours and then crashed. I think
>>> this is the first ext4 backup I've done. The only other change is my
>>> removable caddies which are now cheaper ones.
>>>
>>> Any ideas?
>>>
>> Maybe the hard disk is failing.
>> What does "smartctl -a /dev/sda" output in the reallocated sectors row?
>>
>> Kind Regards
>>
>> James
>
>
> Tried a different destination disc but the same problem. Do you think it
> could be the source disc and can I run that command on the mounted disc?
>

As far as I know, smartctl can be run on a mounted disc safely.