4.1.1.4 Work with Single-File Backups

To simplify transfer and management of backup data, you can keep each backup in a single file (the backup image). The backup-to-image option performs a backup directly to a single file, or the options here can pack an existing backup into a single file or unpack a single-file backup to a full backup directory structure. For usage and examples, see Section 3.3.5, “Making a Single-File Backup”.

mysqlbackup [STD-OPTIONS]
            [--backup-image=IMAGE] [--backup-dir=PATH]
            image-to-backup-dir

mysqlbackup [STD-OPTIONS]
            [--backup-dir=PATH] [--backup-image=IMAGE]
            backup-dir-to-image

mysqlbackup [STD-OPTIONS]
            [--backup-image=IMAGE] [--src-entry=PATH]
            list-image

mysqlbackup [STD-OPTIONS]
            [--backup-image=IMAGE]
            [--backup-dir=PATH]
            [--src-entry=PATH] [--dst-entry=PATH]
            extract
image-to-backup-dir

Unpacks a single-file backup to a full backup directory structure. You specify the paths to both the image file and the destination directory in which to unpack.

backup-dir-to-image

Packs an existing backup into a single file. Specify a --backup-image value of - (standard output) to stream an existing backup directory structure to a tape device or a command that transfers the backup to another server. The --backup-image parameter is either - or an absolute path outside the backup-dir directory.

list-image

Display the contents of a single-file backup. Lists all files and directories in the image. The --src-entry=name can be used to list a specific file or directory. If the name is a directory, all its files and subdirectories inside the image are recursively listed.

extract

Unpacks an individual file or directory from a single-file backup. For troubleshooting or restoration operations that do not require the full set of backup data. The resulting file or directory goes in the current directory, or in backup-dir if specified. All files and directory contents in the image with absolute path names are extracted into the same absolute path names on the local system.

The --src-entry=path option can be used for selective extraction of a single file or single directory in image. Specify the path as it appears in the image.

The --dst-entry=path option, along with --src-entry=path option can be used to extract a single file or single directory into a user-specified file or directory respectively. If the --src-entry option is used, but --dst-entry option is omitted, then the selected file or directory is extracted to the same path in the local file system.

The default destination for the extract is the current working directory. It can be overridden by the --backup-dir option. All the files with relative pathnames in the image are extracted to pathnames relative to the destination directory.

If the image contains some entries with absolute pathnames, those entries are extracted to the same absolute path names even if --backup-dir option is specified. The --dst-entry option must be used to relocate an absolute pathname.