Re: [Dar-support] Data sync error?

[Denis C. <dar...@fr...>]

Le 01/06/2022 à 13:57, Graeme Gemmill a écrit :
> My normally reliable backup script failed last night. Unfortunately I
> did not print up the non-zero error code, but I received the message:
> Error while saving data: Failed sync the slice (fdatasync): Input/output
> error
> 
> However, the backup looks to be the correct size, is readable by darGUI
> and the final log messages from the log are:
> 
> ........
> Adding file to archive: /accounts/graeme/Software/list.txt
> Saving Filesystem Specific Attributes for /accounts/graeme/Software/list.txt
> Adding folder to archive: /accounts/System Volume Information
> Saving Filesystem Specific Attributes for /accounts/System Volume
> Information
> Writing down archive contents...
> Closing the escape layer...
> Writing down the first archive terminator...
> Writing down archive trailer...
> Writing down the second archive terminator...
> Final memory cleanup...
> 
> which seem pretty normal. Should I be worried?

the fact fsync/fdatasync failed and the reason reported by the operating
system is "Input/output error" means you have a problem with the disk
where have been written the slices.

The fact the backup is fine does not mean it has been written properly
down to the disk, in particular if some blocks are still pending for
writing, the backup will read the corresponding pending block from
memory, so the backup test may seem fine, but if you reboot the system,
the result could be quite different.

my 2 cents

> -- 
> Graeme
> Machine 'Haydn' running Plasma 5.20.4 on 5.15.43-desktop-1.mga8 kernel.
> Mageia release 8 (Official) for x86_64
>