Hello Keith!
On Tue, 8 Sep 2009 09:39:21 +0100 (BST) Keith Roberts <ke...@karsites.net> wrote: > On Tue, 8 Sep 2009, wwp wrote: > > > To: mc@gnome.org > > From: wwp <subscr...@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 <ables...@gmx.de> wrote: > > > >> Hi, > >> > >> wwp <subscr...@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. (I know about the hdparm -S thing, thanks anyway) I'm afraid those power-downs directly or not are due to a hardware problem. The most amazing thing (and a pretty good news for my data recovery) is that those power-downs don't happen while ddrescue is copying data, whereas they are showing up regularly when using mc or cp.. Maybe a temperature problem and the disk safety mechanisms were shutting down the disk to prevent breakage.. Apparently this is not due to a specific area in the disk, since ddrescue completed the copy w/o problem and I'm now able to mount it. Thanks again! Regards, -- wwp
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