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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/guix.texi | 57 |
1 files changed, 44 insertions, 13 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index f8da9c1224..c102746636 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -1541,8 +1541,9 @@ is achieved by running @code{guix package --delete-generations} The @command{guix gc} command has three modes of operation: it can be used to garbage-collect any dead files (the default), to delete specific -files (the @code{--delete} option), or to print garbage-collector -information. The available options are listed below: +files (the @code{--delete} option), to print garbage-collector +information, or for more advanced queries. The garbage collection +options are as follows: @table @code @item --collect-garbage[=@var{min}] @@ -1564,17 +1565,6 @@ Attempt to delete all the store files and directories specified as arguments. This fails if some of the files are not in the store, or if they are still live. -@item --optimize -@cindex deduplication -Optimize the store by hard-linking identical files---this is -@dfn{deduplication}. - -The daemon performs deduplication after each successful build or archive -import, unless it was started with @code{--disable-deduplication} -(@pxref{Invoking guix-daemon, @code{--disable-deduplication}}). Thus, -this option is primarily useful when the daemon was running with -@code{--disable-deduplication}. - @item --list-dead Show the list of dead files and directories still present in the store---i.e., files and directories no longer reachable from any root. @@ -1602,6 +1592,47 @@ of these, recursively. In other words, the returned list is the @end table +Lastly, the following options allow you to check the integrity of the +store and to control disk usage. + +@table @option + +@item --verify[=@var{options}] +@cindex integrity, of the store +@cindex integrity checking +Verify the integrity of the store. + +By default, make sure that all the store items marked as valid in the +daemon's database actually exist in @file{/gnu/store}. + +When provided, @var{options} must a comma-separated list containing one +or more of @code{contents} and @code{repair}. + +When passing @option{--verify=contents}, the daemon will compute the +content hash of each store item and compare it against its hash in the +database. Hash mismatches are reported as data corruptions. Because it +traverses @emph{all the files in the store}, this command can take a +long time, especially on systems with a slow disk drive. + +@cindex repairing the store +Using @option{--verify=repair} or @option{--verify=contents,repair} +causes the daemon to try to repair corrupt store items by fetching +substitutes for them (@pxref{Substitutes}). Because repairing is not +atomic, and thus potentially dangerous, it is available only to the +system administrator. + +@item --optimize +@cindex deduplication +Optimize the store by hard-linking identical files---this is +@dfn{deduplication}. + +The daemon performs deduplication after each successful build or archive +import, unless it was started with @code{--disable-deduplication} +(@pxref{Invoking guix-daemon, @code{--disable-deduplication}}). Thus, +this option is primarily useful when the daemon was running with +@code{--disable-deduplication}. + +@end table @node Invoking guix pull @section Invoking @command{guix pull} |