Messages in this thread | | | From | Claudio Martins <> | Subject | Re: ext4 features | Date | Sat, 1 Jul 2006 19:09:28 +0100 |
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On Saturday 01 July 2006 18:47, Thomas Glanzmann wrote: > Hello, > > > Checksums are not very useful for themselves. They are useful when we > > have other copy of data (think raid mirroring) so data can be > > reconstructed from working copy. > > it would be possible to identify data corruption. > > > What's wrong with DM snapshots? > > they're inefficient in matter of disk space consumption because they > don't have a clue of the filesystems that are on top of them. >
May I recommend that you have a look at NILFS?
http://nilfs.org/en/
The design is built from the ground up to support an almost arbitrary number of snapshots, and also has other advantages. And it works already.
Regards
Cláudio
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