datalad drop

Synopsis

datalad drop [-h] [--what {filecontent|allkeys|datasets|all}] [--reckless
    {modification|availability|undead|kill}] [-d DATASET] [-r] [-R
    LEVELS] [-J NJOBS] [--nocheck] [--if-dirty IF_DIRTY] [--version]
    [PATH ...]

Description

Drop content of individual files or entire (sub)datasets

This command is the antagonist of ‘get’. It can undo the retrieval of file content, and the installation of subdatasets.

Dropping is a safe-by-default operation. Before dropping any information, the command confirms the continued availability of file-content (see e.g., configuration ‘annex.numcopies’), and the state of all dataset branches from at least one known dataset sibling. Moreover, prior removal of an entire dataset annex, that it is confirmed that it is no longer marked as existing in the network of dataset siblings.

Importantly, all checks regarding version history availability and local annex availability are performed using the current state of remote siblings as known to the local dataset. This is done for performance reasons and for resilience in case of absent network connectivity. To ensure decision making based on up-to-date information, it is advised to execute a dataset update before dropping dataset components.

Examples

Drop single file content:

% datalad drop <path/to/file>

Drop all file content in the current dataset:

% datalad drop

Drop all file content in a dataset and all its subdatasets:

% datalad drop -d <path/to/dataset> -r

Disable check to ensure the configured minimum number of remote sources for dropped data:

% datalad drop <path/to/content> --reckless availability

Drop (uninstall) an entire dataset (will fail with subdatasets present):

% datalad drop --what all

Kill a dataset recklessly with any existing subdatasets too(this will be fast, but will disable any and all safety checks):

% datalad drop --what all, --reckless kill --recursive

Options

PATH

path of a dataset or dataset component to be dropped. Constraints: value must be a string or value must be NONE

-h, -\-help, -\-help-np

show this help message. –help-np forcefully disables the use of a pager for displaying the help message

-\-what {filecontent|allkeys|datasets|all}

select what type of items shall be dropped. With ‘filecontent’, only the file content (git-annex keys) of files in a dataset’s worktree will be dropped. With ‘allkeys’, content of any version of any file in any branch (including, but not limited to the worktree) will be dropped. This effectively empties the annex of a local dataset. With ‘datasets’, only complete datasets will be dropped (implies ‘allkeys’ mode for each such dataset), but no filecontent will be dropped for any files in datasets that are not dropped entirely. With ‘all’, content for any matching file or dataset will be dropped entirely. Constraints: value must be one of (‘filecontent’, ‘allkeys’, ‘datasets’, ‘all’) [Default: ‘filecontent’]

-\-reckless {modification|availability|undead|kill}

disable individual or all data safety measures that would normally prevent potentially irreversible data-loss. With ‘modification’, unsaved modifications in a dataset will not be detected. This improves performance at the cost of permitting potential loss of unsaved or untracked dataset components. With ‘availability’, detection of dataset/branch-states that are only available in the local dataset, and detection of an insufficient number of file-content copies will be disabled. Especially the latter is a potentially expensive check which might involve numerous network transactions. With ‘undead’, detection of whether a to-be-removed local annex is still known to exist in the network of dataset-clones is disabled. This could cause zombie-records of invalid file availability. With ‘kill’, all safety-checks are disabled. Constraints: value must be one of (‘modification’, ‘availability’, ‘undead’, ‘kill’)

-d DATASET, -\-dataset DATASET

specify the dataset to perform drop from. If no dataset is given, the current working directory is used as operation context. Constraints: Value must be a Dataset or a valid identifier of a Dataset (e.g. a path) or value must be NONE

-r, -\-recursive

if set, recurse into potential subdatasets.

-R LEVELS, -\-recursion-limit LEVELS

limit recursion into subdatasets to the given number of levels. Constraints: value must be convertible to type ‘int’ or value must be NONE

-J NJOBS, -\-jobs NJOBS

how many parallel jobs (where possible) to use. “auto” corresponds to the number defined by ‘datalad.runtime.max-annex-jobs’ configuration item. Constraints: value must be convertible to type ‘int’ or value must be NONE or value must be one of (‘auto’,)

-\-nocheck

DEPRECATED: use ‘–reckless availability’.

-\-if-dirty IF_DIRTY

DEPRECATED and IGNORED: use –reckless instead.

-\-version

show the module and its version which provides the command

Authors

datalad is developed by The DataLad Team and Contributors <team@datalad.org>.