Acronis Backup for Linux Server - User Guide - Manual (Page 90)

90 Copyright © Acronis International GmbH, 2002-2014
When the check box is not selected, the command execution result does not affect the task
execution failure or success. You can track the command execution result by exploring the log or
the errors and warnings displayed in the Log view.
5. Click Test Command to check if the command is correct.
4.7.16 Pre/Post data capture commands
This option is effective for both Windows and Linux operating systems.
The option enables you to define the commands to be automatically executed before and after data
capture (that is, taking the data snapshot). Data capture is performed by Acronis Backup at the
beginning of the backup procedure.
The following scheme illustrates when the pre/post data capture commands are executed.
<--------------- Backup --------------->
Pre-backup
command
Pre-data
capture
command
Data
capture
Post-data
capture
command
Post-backup
command
If the Volume Shadow Copy Service option is enabled, the commands' execution and the Microsoft
VSS actions will be sequenced as follows:
"Before data capture” commands -> VSS Suspend -> Data capture -> VSS Resume -> "After data
capture" commands.
Using the pre/post data capture commands, you can suspend and resume a database or application
that is not compatible with VSS. As opposed to the Pre/Post commands (p. 88), the pre/post data
capture commands will be executed before and after the data capture process. This takes seconds.
The entire backup procedure may take much longer, depending on the amount of data to be backed
up. Therefore, the database or application idle time will be minimal.
To specify pre/post data capture commands
1. Enable pre/post data capture commands execution by checking the following options:

Execute before the data capture

Execute after the data capture
2. Do any of the following:

Click Edit to specify a new command or a batch file

Select the existing command or the batch file from the drop-down list
3. Click OK.
4.7.16.1 Pre-data capture command
To specify a command/batch file to be executed before data capture
1. In the Command field, type a command or browse to a batch file. The program does not support
interactive commands, i.e. commands that require user input (for example, "pause".)
2. In the Working directory field, specify a path to a directory where the command/batch file will
be executed.
3. In the Arguments field specify the command’s execution arguments, if required.
4. Depending on the result you want to obtain, select the appropriate options as described in the
table below.
5. Click Test command to check if the command is correct.