You can back up and restore the configuration data for
the system after preliminary tasks are completed.
Configuration data for the system
provides information about your system and the objects that are defined
in it. The backup and restore functions of the svcconfig command can back up and restore only your configuration data for
the Lenovo Storage V7000 system. You must regularly back up your application data by
using the appropriate backup methods.
You can maintain your configuration data for the system by completing
the following tasks:
- Backing up the configuration data
- Restoring the configuration data
- Deleting unwanted backup configuration data files
Before you back up your configuration data, the following prerequisites
must be met:
- No independent operations that change the configuration for the
system can be running while the backup command is running.
- No object name can begin with an underscore character (_).
Note:
- The default object names for controllers, I/O groups, and managed
disks (MDisks) do not restore correctly if the ID of the object is
different from what is recorded in the current configuration data
file.
- All other objects with default names are renamed during the restore
process. The new names appear in the format name_r where name is the name of the object in your system.
Before you restore your configuration data, the following prerequisites
must be met:
- You have the Security Administrator role associated with your
user name and password.
- You have a copy of your backup configuration files on a server
that is accessible to the system.
- You have a backup copy of your application data that is ready
to load on your system after the restore configuration operation is
complete.
- You know the current license settings for your system.
- You did not remove any hardware since the last
backup of your configuration.
- No zoning changes were made on the Fibre Channel fabric which
would prevent communication between the Lenovo Storage V7000 and
any storage controllers which are present in the configuration.
- For configurations with more than one I/O group,
if a new system is created on which the configuration data is to be
restored, the I/O groups for the other control enclosures must be
added.
- You have at least 3 USB flash drives if encryption was enabled
on the system when its configuration was backed up. The USB flash
drives are used for generation of new keys as part of the restore
process or for manually restoring encryption if the system has less
than 3 USB ports.
Use the following steps to determine how to achieve
an ideal T4 recovery:
- Open the appropriate svc.config.backup.xml (or svc.config.cron.xml)
file with a suitable text editor or browser and navigate to the node section of the file.
- For each node entry, make a note of the value of the following
properties: IO_group_id, canister_id, enclosure_serial_number.
- Use the CLI sainfo lsservicenodes command
and the data to determine which node canisters previously belonged in each I/O group.
Restoring the system configuration should be performed via one
of the nodes previously in IO group zero. For example,
property name="IO_group_id" value="0" . The remaining
enclosures should be added, as required, in
the appropriate order based on the previous
IO_group_id of its
node canisters.
Note: It is not currently possible to determine which
canister within the identified enclosure was previously used for cluster
creation. Typically the restoration should be performed via canister
1.
The Lenovo Storage V7000 analyzes
the backup configuration data file and the system to verify that the
required disk controller system nodes are available.
Before you begin, hardware recovery must be complete. The following
hardware must be operational: hosts, Lenovo Storage V7000enclosures, internal flash drives and expansion
enclosures (if applicable), the Ethernet network, the SAN fabric,
and any external storage systems (if applicable).