Bash help

loltim · 8 Oct 2016 at 13:30

Hi all. I'm trying to back up everything on my 2TB NAS to a 2TB USB HDD. Obviously with something like a QNAP or Synology this would be straight forward but I'm stuck with an old Seagate GoFlex home and the GUI is pretty awful. There isn't a backup option.

I've gained root access via putty and i'm running this command:

cp -u -r --preserve=all /home/admin/"nas-sharename"/* /home/admin/"usb-sharename"/

The problem I've got is the USB drive is running out of space. The destination files are bigger than the source files :confused:

I'm running treesize on the USB drive now to see where the duplicates are but does anyone know if I can add any extra switches in to my command to fix it without manually searching for duplicates? Are deleted files from the NAS potentially not being deleted from the USB drive?

edit: would I be better using rsync rather than cp?

Itchytrigg · 8 Oct 2016 at 15:37

If it's deleted on the NAS, cp will not delete the file on the USB, it's only going to add files to the USB that don't exist or are newer on the NAS (the -u option).

I think rsync is what you'll want.

KIA · 8 Oct 2016 at 16:24

Yes, use rsync.

pete910 · 9 Oct 2016 at 00:53

Like others have said, rsync.

I use this to backup folder/files ect via ssh on my home server.

Code:

rsync -r -a -v -e ssh "src" user@host:"dest"

loltim · 9 Oct 2016 at 22:18

I don't think my NAS has the rsync service unfortunately so good old cp it is.

Maybe it's time to treat myself to a Synology :cool:

pete910 · 9 Oct 2016 at 22:42

loltim said:
I don't think my NAS has the rsync service unfortunately so good old cp it is.

Maybe it's time to treat myself to a Synology

I run rsync from my desktop to backup to the server. though I use linux as my main desktop.

What NAS/OS is it ?

loltim · 9 Oct 2016 at 22:49

It's a Seagate Goflex Home 2TB which I think runs hipserv 2.7.

It's pretty old and pretty terrible. Single disk/no RAID. It's only really used for Plex storage so no critical data on it.

Having said that, if I did have redundancy and rsync I'd probably keep some important files/photos on it, hence looking at potentially upgrading to a Synology DS216SE.

pete910 · 10 Oct 2016 at 17:45

loltim said:
It's a Seagate Goflex Home 2TB which I think runs hipserv 2.7.

It's pretty old and pretty terrible. Single disk/no RAID. It's only really used for Plex storage so no critical data on it.

Having said that, if I did have redundancy and rsync I'd probably keep some important files/photos on it, hence looking at potentially upgrading to a Synology DS216SE.

Upgrade may be the table then