Re: I/O error on a file on a backup drive

[Robert Moskowitz]

On 5/17/20 1:52 PM, Richard wrote:
> > Date: Sunday, May 17, 2020 13:22:54 -0400
> > From: Robert Moskowitz <rgm(a)htt-consult.com&gt;
> >
> > I am having a problem with rsyncing:
> >
> > rsync -ah --stats --delete /home/
> > /media/HD103SI/backups/homebase/home
> > rsync:
> > readlink_stat("/media/HD103SI/backups/homebase/home/abba/abba/Excel
> > /Home/Power usage.xls") failed: Input/output error (5)
> > rsync: recv_generator: failed to stat
> > "/media/HD103SI/backups/homebase/home/abba/abba/Excel/Home/Power
> > usage.xls": Input/output error (5)
> > IO error encountered -- skipping file deletion
> >
> > So I go to the directory and I try to ls P* and it hangs.
> >
> > I tried to remove the bad file:
> >
> > rm Power\ usage.xls
> > rm: cannot remove `Power usage.xls': Input/output error
> >
> > How can I get this bad file out of the way so I can back up
> > properly?
> >
>  I would probably fsck the drive to see if there are errors, and go
>  from there. 
After umounting the drive from the server:

# fsck /dev/sdc
fsck from util-linux-ng 2.17.2
e2fsck 1.41.12 (17-May-2010)
fsck.ext2: Superblock invalid, trying backup blocks...
fsck.ext2: Bad magic number in super-block while trying to open /dev/sdc

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
     e2fsck -b 8193 <device>

Yes, the server is running some old OS, but it is not accessible but on 
its subnet...

And

# parted /dev/sdc print
Model: SAMSUNG HD103SI (scsi)
Disk /dev/sdc: 1000GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type     File system  Flags
  1      32.3kB  1000GB  1000GB  primary  ext4