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report/idea on minting chunked keys to try from special remote

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yarikoptic 2020-10-20 23:31:22 +00:00 • committed by admin
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doc/bugs/fsck_--key_without___34__chunking__34___information_in_git-annex_does_not_try_chunks.mdwn Normal file
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### Please describe the problem.
Probably it is more of a todo than a bug.
### What steps will reproduce the problem?
This is a use-case where I am trying to establish a special remote to be shared by multiple unrelated repositories.
So I had original repo1 in which I
- created an external special remote with chunking, it got UUID1
- uploaded some data (all got chunked)
created repo2 in which I
- initialized special remote with identical settings and provided `uuid=UUID1`
- decided to test if annex would be able to get a key from the shared special remote
but `annex fsck --key KEY --from remote --fast`, since it doesn't have an exact chunking list, just provides special remote backend with original full key only, which is obviously not found, and it reports failure. But I wondered -- couldn't `git-annex` just use chunking size and "mint" possible chunked-keys to test on the special remote since it has all the information? After all chunk keys AFAIK are deterministically minted and pretty much are just "augmented" original key with `-S<chunksize>-C<chunkindex>` added to the key.
### What version of git-annex are you using? On what operating system?
8.20200908+git175-g95d02d6e2-1~ndall+1
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