InfoSlice configuration
for resizable Volumes and File Systems
In order to be able to grow a file system or a Volume, the InfoSlice RAID subsystem has to be configured in a certain way from the beginning, before it is used to store any data. This page describes how to properly configure the InfoSlice at installation time, to enable it's volume and file system resizing feature.
1. Set up the InfoSlice RAID groups and levels in a usual way as described in the Installation and Maintenance Manual.
2. Connect to the Webmin interface of the InfoSlice via your favorite web browser, such as Microsoft Explorer or Netscape in case you are not connected yet. Because only a secure connection is allowed to the Webmin, use https instead of regular http at the beginning of the URL. Login to the Webmin using your InfoSlice administrator user name and password (see the IS identification page which you have received with the unit). You will see a screen similar to this:
3. Click on the "Device Partition Manager" icon and scroll down to the row showing the RAID set (called RAID Device #) you have decided to configure to support resizable file system/volume. In this example it is "RAID Device 0" having approximately 530 GB of usable storage space.
Select the smallest increment by which you will be resizing the one or more file systems or volumes that will be created in the one or more partitions of this RAID set. In this example we have chosen a resizing increment of 100 MBytes. This means that when we later re-size the file systems or volumes you will be able to grow or shrink them in 100 MByte increments. For example, if you attempt to grow a partition by 20 MBytes using Webmin, it will be grown by a 100 MBytes instead. Do not, however, select unnecessarily small increments, because some disk space is used by the InfoSlice itself to keep partitioning information. We recommend selecting increment sizes in 10 MByte to 1 GByte range. Once this number is selected it is not possible to change it without destroying all partitions on any particular RAID set and loosing all data stored there.
Once you type the increment size in the field like the one shown below, click on "Configure" button.
4. Once the the RAID set is configured with the re-size increments, the RAID set's capacity can be allocated to separate independent LUNs, each of which will be accessed by one of the servers or workstations connected to the InfoSlice. In the following example, we are creating a 100 GByte partition on the 530 GByte RAID set. To create an InfoSlice partition (for example addressable by a server as a SCSI ID/LUN), type in the size in GBytes of the partition to be created and click on the "Create Partition" button:
5. After you have created the desired partitions, you will see a screen similar to this:
The number to the right of the "Create Partition" field indicates unused storage space, which can be further employed to create new partitions or grow existing ones.
6. Follow the top left link on the Device Partition Manager screen to the main Webmin menu and click on the "SAN Devices ACL" icon. If you plan to use the "Access Control List" feature of the InfoSlice, consult the Installation and Maintenance Manual on how to configure ACL's. If you are not planning to use this feature, just click on the "default" link and you will be presented with a screen similar to this:
7. You may have to scroll down to find the partition you have just created. The RAID device and partition numbers are shown in the rightmost column of the ACL table. Click on the "Create LUN" button in the row corresponding to the Partition you just created to make it a LUN of the InfoSlice, which can be seen and used by the computers connected to the InfoSlice. After doing that, you will be presented with a screen similar to this:

Note that the first column on the above screen now shows the LUN number by which this partition is accessible.
At this point the InfoSlice is configured to support resizable file systems. Proceed to configure the file system on a configured LUN in your operating system.