Backup Input/output error

I have qnap NAS storage, which is configured with NFS file system. I have configured

[root@mc backup]# cat /var/log/last-backup.log
Import of duplicity.backends.dpbxbackend Failed: No module named dropbox
Reading globbing filelist /tmp/lt4htUWC10
Local and Remote metadata are synchronized, no sync needed.
Last full backup left a partial set, restarting.
Last full backup date: Sun Mar 13 08:49:33 2016
RESTART: The first volume failed to upload before termination.
Restart is impossible…starting backup from beginning.
Import of duplicity.backends.dpbxbackend Failed: No module named dropbox
Reading globbing filelist /tmp/lt4htUWC10
Local and Remote metadata are synchronized, no sync needed.
Last full backup date: none
[Errno 5] Input/output error

Please Help Me out ----

Regards
Hitesh

Usually this is caused by network problem or even errors on NAS disks.

Is there any solution for this ?

Can we add verbose in backup script ?

The solution is probably fix the NAS :smile:

There is no easy way.

You must execute manually:

signal-event pre-backup-data

Then you must hack and execute this script:

/sbin/e-smith/backup-data

At the end:

signal-event post-backup-data