13.5 Single-File Backup Operations

To simplify transfer and management of backup data, you can keep each backup in a single file (the backup image). The backup-to-image command performs a backup directly to a single file, and there are the commands for packing an existing backup into a single file or unpacking a single-file backup to a full backup directory structure. These and other commands for working with single-file backups are explained below. For usage examples, see Section 4.3.5, “Making a Single-File Backup”.

mysqlbackup [STD-OPTIONS]
            [CONNECTION-OPTIONS]
            [SERVER-REPOSITORY-OPTIONS]
            [BACKUP-REPOSITORY-OPTIONS]
            [METADATA-OPTIONS]
            [COMPRESSION-OPTIONS]
            [SPECIAL-BACKUP-TYPES-OPTIONS]
            [INCREMENTAL-BACKUP-OPTIONS]
            [PARTIAL-BACKUP-RESTORE-OPTIONS]
            [SINGLE-FILE-BACKUP-OPTIONS]
            [PERFORMANCE-SCALABILITY-CAPACITY-OPTIONS]            
            [MESSAGE-LOGGING-OPTIONS]
            [PROGRESS-REPORT-OPTIONS]
            [ENCRYPTION-OPTIONS]
            [CLOUD-STORAGE-OPTIONS]
            backup-to-image


mysqlbackup [STD-OPTIONS]
            [--backup-image=IMAGE] [--backup-dir=PATH]
            [MESSAGE-LOGGING-OPTIONS]    
            [PROGRESS-REPORT-OPTIONS]
            [ENCRYPTION-OPTIONS]
            [CLOUD-STORAGE-OPTIONS]
            image-to-backup-dir

mysqlbackup [STD-OPTIONS]
            [--backup-dir=PATH] [--backup-image=IMAGE]
            [MESSAGE-LOGGING-OPTIONS]
            [PROGRESS-REPORT-OPTIONS]
            [ENCRYPTION-OPTIONS]
            [CLOUD-STORAGE-OPTIONS]
            backup-dir-to-image

mysqlbackup [STD-OPTIONS]
            [--backup-image=IMAGE]
            [MESSAGE-LOGGING-OPTIONS]
            [ENCRYPTION-OPTIONS]
            [CLOUD-STORAGE-OPTIONS]
            list-image

mysqlbackup [STD-OPTIONS]
            [--backup-image=IMAGE]
            [--backup-dir=PATH]
            [--src-entry=PATH] [--dst-entry=PATH]
            [MESSAGE-LOGGING-OPTIONS]
            [PROGRESS-REPORT-OPTIONS]
            [ENCRYPTION-OPTIONS]
            [CLOUD-STORAGE-OPTIONS]
            extract

mysqlbackup [STD-OPTIONS]
            [SERVER-REPOSITORY-OPTIONS]
            [--backup-image=IMAGE]
            [--backup-dir=PATH]
            [MESSAGE-LOGGING-OPTIONS]
            [PARTIAL-BACKUP-RESTORE-OPTIONS]
            [PROGRESS-REPORT-OPTIONS]
            [ENCRYPTION-OPTIONS]
            [CLOUD-STORAGE-OPTIONS]
            copy-back-and-apply-log

• 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 for the unpacking. For usage examples, see Section 4.3.5, “Making a Single-File Backup”.

  Note

  image-to-backup-dir only creates a raw backup directory, which is NOT ready to be restored by the copy-back command. To become a prepared backup, the backup directory has to go through an apply-log operation, executed either by a stand-alone apply-log command or as a part of a copy-back-and-apply-log command.

• backup-dir-to-image

  Packs an existing backup directory into a single file. The value for the --backup-image parameter should either be “-”(stands for standard output) or an absolute path outside of the backup-dir directory. 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. For usage examples, see Section 4.3.5, “Making a Single-File Backup”.

• list-image

  Display the contents of a single-file backup. Lists all files and directories in the image. For usage examples, see Section 4.3.5, “Making a Single-File Backup”.

  Note

  The list-image operation can be performed on a cloud backup only if the cloud proxy supports HTTP range headers.

• extract

  Unpacks individual files or directories from a single-file backup. It is useful for troubleshooting, or for restorations that do not require the full set of backup data. The resulting file or directory goes into the current directory, or into the backup directory, if specified with --backup-dir; in either case, the destination directory must be empty. For usage examples, see Section 4.3.5, “Making a Single-File Backup”.

  The --src-entry=string option can be used for selective extraction of files or directories whose path names in the image contain the string specified with the option.

  Notes

  • Some items are always extracted from the backup; see the descriptions of --src-entry for details.

  • The option is currently not supported for the extraction of cloud backups, which can only be extracted in full.

  The --dst-entry=path option, along with --src-entry=path option, can be used to extract files or directories into user-specified locations; see the description for the option for details.

  The default destination for the extract is the current working directory. 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 pathnames on the local system even if the --backup-dir option is specified. The --dst-entry option must be used to relocate an absolute pathname; see Example 4.14, “Dealing with Absolute Path Names”.

  Important

  Even with all files extracted from the backup image, extract only creates a raw backup directory, which is NOT ready to be restored by the copy-back command. To become a prepared backup, the backup directory has to go through an apply-log operation, executed either by a stand-alone apply-log command or as a part of a copy-back-and-apply-log command.

• copy-back-and-apply-log

  See description for copy-back-and-apply-log in Section 13.3, “Restore Operations”.