Generate MD5 log for all copied files

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isidro
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Generate MD5 log for all copied files

Post by *isidro » 2019-01-28, 13:32 UTC

It would be VERY useful to have MD5 computed while copying and have results on one MD5 file on destination (name should be source upper folder/drive). That would provide an integrity verification on destination media to ensure backup was done ok. Current Verify after Copy isn't useful because most files will probably be read from Cache instead and future integrity check can't be done.
Now my backups consists of four steps: 1) copy all. 2) Generate MD5 in source. 3) Generate MD5 on dest. 4) compare generated MD5 files to make sure nothing got corrupted.
With MD5 checkbox on copy it will be reduced to 2 steps: Copy+MD5 and use that MD5 file to verify dest. Faster an simpler and having MD5 will ensure integrity in the future.

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Dalai
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Re: Generate MD5 log for all copied files

Post by *Dalai » 2019-01-28, 14:39 UTC

This would indeed be useful. Support++ for the request itself.

One point of discussion is: Where exactly integrate this feature in the copy dialog? Where to put the type of checksum choice? Sometimes I don't want MD5 but SHA1 or SHA256 instead. And what about the different style of checksums, all checksums in one file vs. one checksum file per file?

@Mods: This thread should be moved to TC Suggestions subforum.

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Dalai
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isidro
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Re: Generate MD5 log for all copied files

Post by *isidro » 2019-06-28, 14:54 UTC

Use last type of checksum used by user. Checksums should be per root folders or per full set and not per file (ie: bakups of 10k mp3, flacs or photos will stupily duplicate number of files). It should work exactly as Pack works now with: "Create separate archives, one per selected file/dir"

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MVV
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Re: Generate MD5 log for all copied files

Post by *MVV » 2019-07-08, 06:11 UTC

You have to add a step into your algorithm: 2) flush target device cache. Otherwise your OS may simply get data from cache on your step 3).

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