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On Mon, Dec 1, 2008 at 1:38 AM, Shawn Haggett <podge@××××××××.com> wrote: |
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> On Sat, 29 Nov 2008 04:21:44 pm Jorge Peixoto de Morais Neto wrote: |
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>> Speaking of md5sum/shasum, do you know some tool that adds data |
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>> redundancy? I heard dvddistaster does this, but I guess it is limited |
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>> to DVDs. It would be great fo find a general data redundancy tool. In |
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>> the moment, with the tools I know, the best I can do is store the |
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>> files twice, with md5sums/shasums to decide which version is correct. |
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> |
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> Have a look at app-arch/par2cmdline ( http://parchive.sourceforge.net/ ). It |
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> will create parity files for an arbitrary set of data files and you can |
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> choose your level of redundency (from 0 = now redundency, just integrity |
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> checking, up to 100%). Although expect your parity files to be on the order |
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> of the percentage for size, i.e. 50% redundancy for some given files to take |
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> about 50% of their size for the parity files). |
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> |
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> The down side I find with the tool is that it doesn't currently support |
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> directories. This isn't so bad for creating parity files, but during |
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> checking/restore, the program expects all files to exist in the current |
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> directory, despite which sub-dirs they were originally in. You can get around |
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> this with a tar/rar/zip first, then calculate parities on the archive though. |
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> |
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Thank you very much. I have taken a quick look at this, and seems to |
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be what I look for. In a few days, when I have time, I will try it on |
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some files and see the results. |
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