2015-03-25 16:09:49 +00:00
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# NAME
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git-annex migrate - switch data to different backend
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# SYNOPSIS
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git annex migrate `[path ...]`
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# DESCRIPTION
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Changes the specified annexed files to use the default key-value backend
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(or the one specified with `--backend`). Only files whose content
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is currently available are migrated.
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Note that the content is also still available using the old key after
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migration. Use `git annex unused` to find and remove the old key.
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Normally, nothing will be done to files already using the new backend.
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However, if a backend changes the information it uses to construct a key,
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this can also be used to migrate files to use the new key format.
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When you have multiple repositories that each contain a copy of a file,
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it's best to run migrate in all of them.
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# OPTIONS
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* `--backend`
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Specify the new key-value backend to use for migrated data.
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* `--force`
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Force migration of keys that are already using the new backend.
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* file matching options
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The [[git-annex-matching-options]](1)
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can be used to specify files to migrate.
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2021-05-10 19:00:13 +00:00
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* Also the [[git-annex-common-options]](1) can be used.
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migrate: New --remove-size option
While intended for converting URL keys added by addurl --fast to be
as if added by addurl --relaxed, it can also be used to remove size
from other types of keys. Although that is not likely to be useful
for checksummed keys, I suppose it could be used for WORM or other
non-checksum keys.
Specifying the --remove-size option does not prevent other migrations
from taking effect if there's a key upgrade to perform, or if the
backend has changed. So --backend=URL needs to be used to prevent
migrating an URL key to the default backend.
Note that it's not possible to use git-annex migrate to convert from a
non-URL key to an URL key, as URL keys cannot be generated, except by
addurl. So while this can get the same effect as --relaxed would have
when addurl --fast was used, when --fast was not used, it won't work, or
if --backend=URL is not used will remove the size but not prevent
checksum verification, which is not useful. Due to this complexity, I
decided not to mention it in the git-annex addurl man page.
Sponsored-by: Jochen Bartl on Patreon
2021-11-12 16:59:30 +00:00
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* `--remove-size`
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Keys often include the size of their content, which is generally a useful
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thing. In fact, this command defaults to adding missing size information
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to keys. With this option, the size information is removed instead.
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One use of this option is to convert URL keys that were added
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by `git-annex addurl --fast` to ones that would have been added if
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that command was run with the `--relaxed` option. Eg:
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git-annex migrate --remove-size --backend=URL somefile
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2015-03-25 16:09:49 +00:00
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# SEE ALSO
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[[git-annex]](1)
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2015-05-29 16:12:55 +00:00
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[[git-annex-upgrade]](1)
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2015-03-25 16:09:49 +00:00
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# AUTHOR
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Joey Hess <id@joeyh.name>
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Warning: Automatically converted into a man page by mdwn2man. Edit with care.
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