Image Manager Driver 3.8

The Image Manager Driver is quite similar to the [[.:sd | Transfer Manager Driver]]. This Manager Driver is responsible for the file management needed to create new Images. ====== Image Manager Driver Configuration ====== Only one Image Manager Driver can be configured in [[.:oned_conf | oned.conf]]. The default configuration is as follows: IMAGE_MAD = [ executable = "one_image", arguments = "fs -t 15" ] Where: * **fs** is the set of scripts to be used. The default **fs** scripts assume the file paths defined in the Image Template are relative to the front-end. * **-t** is the number of threads, i.e. the maximum number of concurrent file operations over the Image Repository. ====== Structure: The Action Scripts ====== The default set of scripts is located in the 'fs' dir. There is a script for each action. In the following table these scripts and their arguments are listed: | **MV** | source | destination | | **CP** | source | destination | | **RM** | destination | - | | **MKFS** | destination | fs-type | size | ====== How to Create Custom Drivers ====== The Driver Subsystem is highly modular. Adding a new set of drivers doesn't require any modification in OpenNebula's code, just the creating of new scripts. The default 'fs' script set is located in ''/var/lib/one/remotes/image''. Taking those scripts as a guide, a new set can be created in a new directory: /var/lib/one/remotes/image/custom |-- cp |-- mkfs |-- mv `-- rm To activate this new set, [[.:oned_conf | oned.conf]] has to be configured as follows: IMAGE_MAD = [ executable = "one_image", arguments = "custom -t 15" ]