Re: Copy process over hardware failure is endless

[Keith Roberts <keith karsites net>]

On Tue, 8 Sep 2009, wwp wrote:

> To: mc gnome org
> From: wwp <subscript free fr>
> Subject: Re: Copy process over hardware failure is endless
>
> Hello Frank, Keith,
>
>
> On Mon, 7 Sep 2009 20:42:01 +0200 Frank Dietrich <ABLEsoft gmx de> wrote:
>
> > Hi,
> >
> > wwp <subscript free fr> wrote:
> > > In /var/log/messages I'm getting tons of:
> > > Sep  7 14:48:03 monolith kernel: sd 8:0:0:0: [sdd] Add. Sense: No
> > > additional sense information Sep  7 14:48:32 monolith kernel: sd
> > > 8:0:0:0: [sdd] Sense Key : No Sense [current] Sep  7 14:48:32
> > > monolith kernel: Info fld=0x0
> >
> > Wouldn't it be more secure for your data to save first the whole
> > partition/disc with ddrescue or similar, to reduce the stress on the
> > dying disc? And after that copying your important data from this
> > image? The only reason which could prevent you not to do this could be
> > the size of the disc.
>
> Yes that's probably what I'll do. I appreciate your suggestion (and
> Keith's) one. Both suggestion will be hard to deploy, as it seems my
> disk self-powers down regularly.

Maybe you could change the power-down defaults with

yum list *hdparm*

You will need to read *all* the manual page before using 
hdparm, as there are some options that are not safe, or experimental.

Use it at your own risk - especially on a faulty drive!

I use it to send my backup IDE drive into sleep mode, 
between hourly backups.

'-S' option

Set the standby (spindown) timeout for the drive.  This 
value is used by the drive to determine how long to wait 
(with no disk activity)  before turning off the spindle 
motor to save power.

Kind Regards,

Keith Roberts

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