diff options
| author | Spencer Baugh <sbaugh@catern.com> | 2018-12-12 14:19:54 -0500 |
|---|---|---|
| committer | Spencer Baugh <sbaugh@catern.com> | 2019-01-23 01:24:34 +0000 |
| commit | 5f1891b795c4c4daac5336d1ec60c94f521ede1d (patch) | |
| tree | 449a2f56d286542cfc03434fde2e92ff89503f2b /doc/manual | |
| parent | 92d08c02c84be34ec0df56ed718526c382845d1a (diff) | |
nix-store: make --dump-db take a list of paths to dump
Inside a derivation, exportReferencesGraph already provides a way to
dump the Nix database for a specific closure. On the command line,
--dump-db gave us the same information, but only for the entire Nix
database at once.
With this change, one can now pass a list of paths to --dump-db to get
the Nix database dumped for just those paths. (The user is responsible
for ensuring this is a closure, like for --export).
Among other things, this is useful for deploying a closure to a new
host without using --import/--export; one can use tar to transfer the
store paths, and --dump-db/--load-db to transfer the validity
information. This is useful if the new host doesn't actually have Nix
yet, and the closure that is being deployed itself contains Nix.
Diffstat (limited to 'doc/manual')
| -rw-r--r-- | doc/manual/command-ref/nix-store.xml | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/manual/command-ref/nix-store.xml b/doc/manual/command-ref/nix-store.xml index 41a04f265..d73cb92ee 100644 --- a/doc/manual/command-ref/nix-store.xml +++ b/doc/manual/command-ref/nix-store.xml @@ -1282,6 +1282,7 @@ ktorrent-2.2.1/NEWS <cmdsynopsis> <command>nix-store</command> <arg choice='plain'><option>--dump-db</option></arg> + <arg rep='repeat'><replaceable>paths</replaceable></arg> </cmdsynopsis> </refsection> @@ -1292,6 +1293,13 @@ Nix database to standard output. It can be loaded into an empty Nix store using <option>--load-db</option>. This is useful for making backups and when migrating to different database schemas.</para> +<para>By default, <option>--dump-db</option> will dump the entire Nix +database. When one or more store paths is passed, only the subset of +the Nix database for those store paths is dumped. As with +<option>--export</option>, the user is responsible for passing all the +store paths for a closure. See <option>--export</option> for an +example.</para> + </refsection> </refsection> |