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Bup is lovely. I used it to back up my huge home folder and only switched away to rdiff-backup because (at the time) there was no support for deleting old revis

by gcr 13y ago

Bup is lovely. I used it to back up my huge home folder and only switched away to rdiff-backup because (at the time) there was no support for deleting old revisions. Is there any support for that? (Of course, for a large enough hard drive, it's not much of a problem...)

jitl 13y ago
Looking at the README under "Stuff that is stupid": > bup currently has no way to prune old backups Thanks for the rdiff-backup shout-out. I'm looking for a nice way to do system backups to my NAS of large VM images without having to install Crashplan. Bup and rdiff-backup both look pretty good.
- gcr 13y ago
  Obnam is also great: http://liw.fi/obnam/ http://liw.fi/obnam/ This does deduplication, but can also encrypt the deduplicated blocks and store them on (say) S3.
  - luxpir 13y ago
    Obnam can also push/pull backups over SSH/SFTP. Seconded.
apenwarr 13y ago
People have been actively working on a "prune" feature but it seems to never quite get finished. This would indeed be nice to have, although it's less important than you might think, given really good deduplication (which bup has). Currently bup has a very simple model - never delete anything - which is hard to screw up, so you're very unlikely to lose data.
- bambambazooka 13y ago
  I really have to finish that feature...
rlpb 13y ago
I wrote ddar, which is basically this but solves that particular problem, by using something other than the git packfile format. http://www.synctus.com/ddar http://www.synctus.com/ddar and http://github.com/basak/ddar http://github.com/basak/ddar It's recently been made available on Homebrew, too.
- rakoo 13y ago
  I don't see a link to the source code on your page, is it just me ?
  - rlpb 13y ago
    See my github link for the latest source. The other page predates me uploading to github, so there's only a tarball source download from there. I should move everything over to github now, really.
- aristidb 13y ago
  Nice. Could you add some description there how the deduplication works? I assume it uses rolling checksums to create chunk boundaries, just like bup?
  - rlpb 13y ago
    > I assume it uses rolling checksums to create chunk boundaries, just like bup? That's right.
- raphinou 13y ago
  How actively is it developed? How reliable is it currently?
  - rlpb 13y ago
    > How actively is it developed? It's a simple tool that does a simple job. It's pretty much done. > How reliable is it currently? No known bugs.
bambambazooka 13y ago
I've been working on that feature for some time. I'll try to finish it for the next release! If you want to test my existing code contact me.

by gcr 13y ago

jitl 13y ago

Looking at the README under "Stuff that is stupid": > bup currently has no way to prune old backups Thanks for the rdiff-backup shout-out. I'm looking for a nice way to do system backups to my NAS of large VM images without having to install Crashplan. Bup and rdiff-backup both look pretty good.

gcr 13y ago
Obnam is also great: http://liw.fi/obnam/ http://liw.fi/obnam/ This does deduplication, but can also encrypt the deduplicated blocks and store them on (say) S3.
- luxpir 13y ago
  Obnam can also push/pull backups over SSH/SFTP. Seconded.

apenwarr 13y ago

People have been actively working on a "prune" feature but it seems to never quite get finished. This would indeed be nice to have, although it's less important than you might think, given really good deduplication (which bup has). Currently bup has a very simple model - never delete anything - which is hard to screw up, so you're very unlikely to lose data.

bambambazooka 13y ago
I really have to finish that feature...

rlpb 13y ago

I wrote ddar, which is basically this but solves that particular problem, by using something other than the git packfile format. http://www.synctus.com/ddar http://www.synctus.com/ddar and http://github.com/basak/ddar http://github.com/basak/ddar It's recently been made available on Homebrew, too.

rakoo 13y ago
I don't see a link to the source code on your page, is it just me ?
- rlpb 13y ago
  See my github link for the latest source. The other page predates me uploading to github, so there's only a tarball source download from there. I should move everything over to github now, really.
aristidb 13y ago
Nice. Could you add some description there how the deduplication works? I assume it uses rolling checksums to create chunk boundaries, just like bup?
- rlpb 13y ago
  > I assume it uses rolling checksums to create chunk boundaries, just like bup? That's right.
raphinou 13y ago
How actively is it developed? How reliable is it currently?
- rlpb 13y ago
  > How actively is it developed? It's a simple tool that does a simple job. It's pretty much done. > How reliable is it currently? No known bugs.

bambambazooka 13y ago

I've been working on that feature for some time. I'll try to finish it for the next release! If you want to test my existing code contact me.