Re: Suggestions for multilevel backup of single machine?
On Sat, Apr 11, 2009 at 01:47:08PM +0100, James Youngman wrote:
> Here's my current backup arrangement:
>
> Data is stored in filesystems on LVM volumes over RAID1. While RAID1
> presents some protection from disk failure, it gives no protection
> against data corruption due to flaky hardware or data loss caused by
> fire or theft.
>
> Therefore I have an offsite backup arrangement. This consists of two
> rsync backups. One backup goes to a local disk (different disk
> manufacturer, different disk controller) and the other rsync backup is
> to a disk at work. This works a bit but the outgoing bandwidth on my
> cable connection is low (about 0.3 Mbps). If I make a large change to
> the machine (e.g. dist-upgrade) I physically swap the home and work
> backup disks (this is the main reason for keeping the local backup
> too). This at least allows me to place an upper limit on the amount
> of data I would lose in the case of (e.g.) a fire.
>
> However, there are two respects in which I think some improvement
> would be useful:
>
> (1) Quite a lot of the files on my system are files I never expect to
> change again. I plan to write a few scripts which will tell me if a
> file that hadn't been modified in, say, two years was in fact recently
> modified. This could give me early warning that the disk controller
> has gone berserk (again).
>
> (2) It would be useful to have a historic backup capability too (e.g.
> the way the filesystem looked yesterday, last week, last month and a
> year ago), at least for filesystems like /home.
>
> What are good solutions for doing (2)? (Please only recommend
> software you're using yourself :)
>
> Thanks,
> James.
I use duplicity <http://duplicity.nongnu.org/>
---
Henri Salo
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