CLI Usage
arck {-s -d -n | -v | -x -d}
| Flag | Description |
|---|---|
| -s | Source directory used for creating the archive |
| -d | Target directory used to output archive. If not specified, working directory will be used instead |
| -n | Specify the name of the archive. Must be given when creating archive |
| -v | Verifies integrity of part files. Specify metadata file to test archives |
| -x | Restore archive. Specify path to metadata file |
Create archive
You can specify a directory (recommended) or file. You do not need to tar archive a directory yourself.
arck -s /path/to/source/ -d /path/to/outputdir/ -n archive_name
You cannot create archive names with an equals (=) sign. If you want to use a space remember to enclose in perensese: -n "name of archive"
Nb: the output directory must have double the available space to match the source directory. After processing, the space requirement will the same as the source directory.
Verify archive
A useful feature is to verify the integrity of the archive parts. Testing backups are an important aspect of data preservation. Verifying is a faster method to test parts integrity without restoring the archive.
arck -v /path/to/archive.m
You will need to specify the archive metadata file. As a reminder, you should keep this backed up and ideally keep multiple copies. More on the (metadata file)[metadata.md].
You will be given an output like:
project.0 PASS
project.1 PASS
project.2 PASS
project.3 PASS
project.4 PASS
If there are any failed parts, the output will read:
project.3 FAIL
In this case, consider restoring broken part from backup and re-testing. There are no methods to fix broken parts, but if there are enough "working" parts, you can restore. To restore, there needs to be 3 of the 5 parts undamaged.
Restore
Before you restore, ensure metadate file is located with parts. Example, metadata file named [archive_name].m
File structure:
archive.m
archive.0
archive.1
archive.2
archive.3
archive.4
You can still restore if parts are missing. Let the program handle this.
arck -x /path/to/metadata_file.m -d /path/to/outputdir/