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Thread: backup logical volume
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Indeed I am looking for a more mature option than my PERL script, and although I am impressed with what lessfs and opendedup do, I came across too many problems when i was testing them. I really dislike fixed-size containers that I cannot extend nor shrink and the big difference with opendedup and lessfs is that I only want to be able to store several versions of one single file. I don't need hardlinks, folders, extended attribures, high performance ... So why use a heavy tool if there might be something simpler. The PoC is merely to indicate the simple requirement I have and my initial question was if such a simple though robust tool exists
- Join Date
- Nov 2007
Generating a hash by file or by block, storing that hash, and then retrieving it to compare changed files/blocks for deduplication purposes *is* a cutting-edge function.
I don't think too many people would put the effort required into doing it right for less than a full filesystem/storage container design. But that's my .02. Good luck in your search.
- Join Date
- Apr 2011
I know I'm jumping in a little late here, but...
Have you considered ddar - a de-duplicating archiver?
Be interesting to know of any success/failure stories of anyone using ddar to de-dupe and backup 1TB+ samba shares.
04-28-2011 #15Originally Posted by stildalf;841107Have you considered ddar - a [B
As stated on the ddar homepage: "ddar is new software. Please use it with caution until it has had wider use"
I've ran a few quick tests and it seems to work just fine, but for the moment I wouldn't trust it as the only location for production data.
I will be using it myself in combination with a regular filesystem backup; if the LV image fails I will still have my files, it will only take more effort to recover from a disaster.
Also you'll need to study its workings and carefully think about how/what you want to recover. In my use case I have no requirements for restoring a single file as I use my file backup for that. It all depends on how you will use this tool, you probably don't want to do a sequential search for a file on a 1TB filesystem, so you'll have to think about how to store your data in the ddar archive.