45 lines
1.9 KiB
Markdown
45 lines
1.9 KiB
Markdown
Once you have multiple repositories, and have perhaps configured numcopies,
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any given file can have many more copies than is needed, or perhaps fewer
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than you would like. How to manage this?
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The whereis subcommand can be used to see how many copies of a file are known,
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but then you have to decide what to get or drop. In this example, there
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are perhaps not enough copies of the first file, and too many of the second
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file.
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# cd /media/usbdrive
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# git annex whereis
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whereis my_cool_big_file (1 copy)
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0c443de8-e644-11df-acbf-f7cd7ca6210d -- laptop
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whereis other_file (3 copies)
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0c443de8-e644-11df-acbf-f7cd7ca6210d -- laptop
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62b39bbe-4149-11e0-af01-bb89245a1e61 -- usb drive [here]
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7570b02e-15e9-11e0-adf0-9f3f94cb2eaa -- backup drive
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What would be handy is some automated versions of get and drop, that only
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gets a file if there are not yet enough copies of it, or only drops a file
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if there are too many copies. Well, these exist, just use the --auto option.
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# git annex get --auto --numcopies=2
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get my_cool_big_file (from laptop...) ok
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# git annex drop --auto --numcopies=2
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drop other_file ok
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With two quick commands, git-annex was able to decide for you how to
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work toward having two copies of your files.
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# git annex whereis
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whereis my_cool_big_file (2 copies)
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0c443de8-e644-11df-acbf-f7cd7ca6210d -- laptop
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62b39bbe-4149-11e0-af01-bb89245a1e61 -- usb drive [here]
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whereis other_file (2 copies)
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0c443de8-e644-11df-acbf-f7cd7ca6210d -- laptop
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7570b02e-15e9-11e0-adf0-9f3f94cb2eaa -- backup drive
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The --auto option can also be used with the copy command,
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again this lets git-annex decide whether to actually copy content.
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The above shows how to use --auto to manage content based on the number
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of copies. It's also possible to configure, on a per-repository basis,
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which content is desired. Then --auto also takes that into account
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see [[preferred_content]] for details.
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