Re: failing HDD, ddrescue says remaning time is 7104d
On Wed 31 Aug 2022 at 14:02:19 (-0700), David Christensen wrote:
> On 8/31/22 06:25, ppr wrote:
> > I would appreciate advice from the community about a failing hard drive.
> >
> > When booting up, the computer complained about /dev/sdb, which is
> > a ext4 HDD with data (not the computer main disk). dmesg shows
> > `AE_NOT_FOUND` and `failed command: READ FPDMA QUEUED` messages
> > (full dmesg log at https://hastebin.com/raw/jebelileru).
> >
> > It has finally booted after trying unsuccessfully to start /dev/sdb.
> Comment out the /etc/crypttab and/or /etc/fstab entries for the failed
> drive. When you mount the drive, mount it read only.
I don't think it's wise to mount this disk at all, and certainly not
before everything that can be rescued from it has been obtained and
copied/archived.
> Consider doing the work in chunks. You
> should already have sectors 0- 33 GB. Skip 33 GB and/or 34 GB. Do
> 35-100 GB. Then, 100-200 GB, 200-300 GB, 300-400 GB, etc.. Get the
> good sectors first. Do the problem sectors last.
Agreed, though ddrescue should be able to do this more flexibly, and
automatically, with -K.
Cheers,
David.
Reply to: