2
votes
1answer
187 views

Incremental file back up by date

Is there any backup tool that supports partial back up by date? What I mean is that I have some small drives such as on a laptop that can't hold a full copy of all the files on an external 2TB drive. ...
0
votes
1answer
32 views

Which media to use for backing up data of my laptop? [closed]

I work at home on my laptop installed with Windows 7 & Ubuntu 13.04. I have stopped working on Windows since much time & would continue to work on Linux only. I have all my important data in ...
3
votes
2answers
359 views

How do I refresh the magnetic state on a disks with backups?

I have a couple of large disks with backup/archive material on them. They're ext4. Regarding the ones of those that will be stored for a couple of years without reading the whole disc again I've been ...
1
vote
1answer
2k views

Clear unused space with zeros (btrfs)

How to clear unused space with zeros ? (I am asking for tool for btrfs filesystem) I'm looking for something smarter than cat /dev/zero > /mnt/X/big_zero ; sync; rm /mnt/X/big_zero Like ...
17
votes
4answers
11k views

Clear unused space with zeros (ext3,ext4)

How to clear unused space with zeros ? (ext3,ext4) I'm looking for something smarter than cat /dev/zero > /mnt/X/big_zero ; sync; rm /mnt/X/big_zero Like FSArchiver is looking for "used space" ...
5
votes
3answers
2k views

Resume interrupted copying process

How to resume securely and reliably process of copying file $A into backup location $B done with pv "$A" > "$B" or cat "$A" > "$B" ? (let's assume file $A is very big, e.g. LVM2 snapshot file) ...