Unprotect tracked files or directories (when hardlinks or symlinks have been
dvc config cache.type).
By default, this command is not necessary, as DVC avoids hardlinks and symlinks
to link tracked data files from the cache to the workspace.
However, these types of file links can be enabled with
dvc config cache
cache.type config option).
Enabling hardlinks or symlinks makes the tracked data files in the workspace read-only links (preventing users from accidentally corrupting the cache by modifying their contents manually).
dvc unprotect guarantees that the target files or directories
targets) in the workspace are physically "unlinked" from the cache and can be
safely updated. Read the
Update a Tracked File guide to
learn more on this process.
dvc unprotect can be an expensive operation (involves copying data). Check
first whether your task matches one of the cases that are considered safe:
- Adding more files to a directory input dataset (say, images or videos)
- Deleting files from a directory dataset
--help- prints the usage/help message, and exit.
--quiet- do not write anything to standard output. Exit with 0 if no problems arise, otherwise 1.
--verbose- displays detailed tracing information.
$ dvc config cache.type symlink
Track a data file with DVC:
$ ls -lh -rw-r--r-- 1 10576022 Nov 27 13:30 Posts.xml.zip $ dvc add Posts.xml.zip
Check that file is a read-only link (@ sign means a link):
$ ls -lh -r--r--r--@ 1 10576022 Apr 25 2017 Posts.xml.zip -rw-r--r-- 1 120 Nov 27 13:29 Posts.xml.zip.dvc
Unprotect the file:
$ dvc unprotect Posts.xml.zip
Check that the file is writable now, the cached version is intact, and they are not linked (the file in the workspace is a copy of the cached file):
$ ls -lh -rw-r--r-- 1 120B Nov 27 13:29 Posts.xml.zip.dvc -rw-r--r-- 1 10M Nov 27 13:30 Posts.xml.zip $ ls -lh .dvc/cache/files/md5/ce/ -rw-r--r--@ 1 10M Apr 25 2017 68b98d82545628782c66192c96f2d2