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QoreStor 7.5.2 - Installation Guide

Uninstalling protocols of choice from QoreStor

Protocols that are not required can be uninstalled from QoreStor by providing the required options to the uninstaller. QoreStor systems running software version less than 7.1.3, should first upgrade to 7.1.3 or higher to have the option available to uninstall the selective protocol stack from their QoreStor systems.
The uninstaller located at /opt/qorestor/bin/qs_uninst provides this option for selective removal of the protocol support. Execute following command to uninstall:

# ./qs_uninst –help
For example:
usage: qs_uninst [-a]

Use the following table to define the uninstall options:

Table 6: QoreStor uninstall protocol option definitions
Option Definition
-a [optional] complete removal of the application, data, metadata, and configuration
-h [optional] print this help
--remove-cifs [optional] remove support for CIFS
--remove-nfs [optional] remove support for NFS
--remove-object-container [optional] remove support for the object container service
--remove-vtl [optional] remove support for VTL/NDMP/ISCSI
--remove-edm [optional] remove support for Veeam EDM, and remove the qs_edmuser from the system

NOTE:

  • Uninstaller checks for any existing containers of given protocol before proceeding with removal of those packages.
    RDS Containers used for CDP backups requires NFS protocol support for Instant Restore to succeed.

  • Before Veeam EDM support can be removed from the QoreStor, the repository and the QoreStor server from the list of Linux servers should be removed from the Veeam Backup application.

Example Usage:

For removal CIFS protocol support
# /opt/qorestor/bin/qs_uninst --remove-cifs

For removal NFS protocol support
#/opt/qorestor/bin/qs_uninst --remove-nfs

For removal of support for the object container service
#/opt/qorestor/bin/qs_uninst --remove-object-container

To remove support for VTL/NDMP/ISCSI
#/opt/qorestor/bin/qs_uninst --remove-vtl



     

Considerations for reinstalling OS

Starting QoreStor release 7.5.2 has additional support to reinstall Operating System (OS), that can help preserve and restore the QoreStor configuration in case where an Operating System has to be upgraded to a newer major release, or when an Operating System needs to be reinstalled due to an Operating System disk/file-system corruption.

QoreStor maintains its data in the repository directory and metadata in the metadata directory. QoreStor configuration files are stored in the Operating System volume. These configuration files are regularly backed up to the repository directory. As long as the repository and metadata directories are maintained on the disk volumes that will not be overwritten or modified during Operating System re-installation, the QoreStor installer retrieves the configuration files and restores them up QoreStor installation.

Before reinstalling QoreStor, and after reinstalling or replacing the Operating System, it is essential that the repository and metadata volumes, as well as any performance-tier volumes and storage enclosure volumes, are mounted using the exact same mount points as before the Operating System reinstallation/replacement. Hence, it is strongly recommended to take a backup of the repository, metadata, performance-tier, and enclosure entries from the /etc/fstab file and save them on an external system. These entries must be added to the /etc/fstab file, and the volumes remounted prior to the reinstallation of QoreStor. This step must be done manually, as these mounts are not managed by QoreStor.

To reinstallQoreStor after the Operating System is replaced or reinstalled, run the installer without any additional arguments:

./qs_inst_7.5.2.115.bin

The installer will automatically locate the most recently backed up set of configuration files and will restore them to the Operating System volume before continuing with the installation. All the protocols that are installed prior to the Operating System reinstallation/replacement will be automatically reinstalled. Also, user accounts created by QoreStor such as administrator and qs_edmuser will also be recreated and the passwords recovered.

  • It is highly recommended to reinstall QoreStor using the same QoreStor version that is previously in use before the Operating System is reinstalled/replaced. It is not recommended to try and upgradeQoreStor during the reinstallation of QoreStor. If required, QoreStorcan be upgraded after it is successful reinstalled.
  • If upgrading the Operating System from RHEL/CentOS/Oracle Linux 7.x to a newer Operating System release,QoreStor is installed with CIFS support, it is recommended to upgrade the Operating System to RHEL/Oracle Linux/Rocky Linux/AlmaLinux 8.x. CIFS support does not support upgrading to Operating System versions 7.x or 8.x to Operating System version 9.x .
  • If QoreStor is joined to an AD domain prior to the Operating System reinstallation/replacement, you will need to leave the domain and rejoin it after QoreStor is reinstalled.
  • If QoreStor is attached to Veeam as an EDM repository, you will need to re-add the QoreStor server as an EDM repository in the Veeam application after QoreStor is reinstalled.

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