18.16. Storage Devices
/etc/dasd.confconfiguration file as described in Section 20.1.3, “Persistently Setting DASDs Online”.
Figure 18.25. Storage Space Overview
18.16.1. The Storage Devices Selection Screen
- Multipath Devices
- Storage devices accessible through more than one path, such as through multiple SCSI controllers or Fiber Channel ports on the same system.
ImportantThe installation program only detects multipath storage devices with serial numbers that are 16 or 32 characters long.
- Other SAN Devices
- Any other devices available on a Storage Area Network (SAN) such as FCP LUNs attached over one single path.
- Firmware RAID
- Storage devices attached to a firmware RAID controller. This tab does not apply to IBM Z.
- System z Devices
- This tab contains storage devices, or Logical Units (LUNs), attached through the zSeries Linux FCP (Fiber Channel Protocol) driver.
Figure 18.26. Tabbed Overview of Specialized Storage Devices
- Add ZFCP LUN - press this button to add a zFCP storage device, and continue with Section 22.214.171.124.3, “FCP Devices”
- Add DASD - press this to add additional DASD devices, and continue with Section 126.96.36.199.2, “DASD storage devices”
- Add iSCSI Target - use to attach iSCSI devices; continue with Section 188.8.131.52.1, “Configuring iSCSI Parameters”
- Add FCoE SAN - use to configure a Fibre Channel Over Internet storage device; continue with Section 184.108.40.206.4, “Configure FCoE Parameters”
Figure 18.27. The Storage Devices Search Tab
220.127.116.11. DASD Low-level Formatting
Figure 18.28. Dialog for Formatting DASD Devices
zerombr(optional) for more details.
msdospartition table on the target DASD. The table does not allow more than three partitions on one DASD device. You can create the partitions manually or use the
autopart --nohomeKickstart option, which ensures that the installer does not create a separate
/home/partition. The absence of the
homedirectory keeps the number of partitions at three.
18.104.22.168. Advanced Storage Options
Figure 18.29. Advanced Storage Options
22.214.171.124.1. Configuring iSCSI Parameters
Figure 18.30. The iSCSI Discovery Details Dialog
Procedure 18.1. iSCSI Discovery and Starting an iSCSI Session
- Enter the IP address of the iSCSI target in the Target IP Address field.
- Provide a name in the iSCSI Initiator Name field for the iSCSI initiator in iSCSI qualified name (IQN) format. A valid IQN entry contains:
A complete IQN can therefore look as follows:
- the string
iqn.(note the period)
- a date code that specifies the year and month in which your organization's Internet domain or subdomain name was registered, represented as four digits for the year, a dash, and two digits for the month, followed by a period. For example, represent September 2010 as
- your organization's Internet domain or subdomain name, presented in reverse order with the top-level domain first. For example, represent the subdomain
- a colon followed by a string that uniquely identifies this particular iSCSI initiator within your domain or subdomain. For example,
iqn.2010-09.storage.example.com:diskarrays-sn-a8675309. Anaconda prepopulates the iSCSI Initiator Name field with a name in this format to help you with the structure.For more information on IQNs , see 3.2.6. iSCSI Names in RFC 3720 - Internet Small Computer Systems Interface (iSCSI) available from http://tools.ietf.org/html/rfc3720#section-3.2.6 and 1. iSCSI Names and Addresses in RFC 3721 - Internet Small Computer Systems Interface (iSCSI) Naming and Discovery available from http://tools.ietf.org/html/rfc3721#section-1.
- Use the Discovery Authentication Type drop-down menu to specify the type of authentication to use for iSCSI discovery. The following options are available:
- no credentials
- CHAP pair
- CHAP pair and a reverse pair
- If you selected CHAP pair as the authentication type, provide the user name and password for the iSCSI target in the CHAP Username and CHAP Password fields.
- If you selected CHAP pair and a reverse pair as the authentication type, provide the user name and password for the iSCSI target in the CHAP Username and CHAP Password field and the user name and password for the iSCSI initiator in the Reverse CHAP Username and Reverse CHAP Password fields.
- Optionally check the box labeled Bind targets to network interfaces.
- Click the Start Discovery button. Anaconda attempts to discover an iSCSI target based on the information that you provided. If discovery succeeds, the dialog displays a list of all iSCSI nodes discovered on the target.
- Each node is presented with a check box beside it. Click the check boxes to select the nodes to use for installation.
Figure 18.31. The Dialog of Discovered iSCSI Nodes
- The Node login authentication type menu provides the same options as the Discovery Authentication Type menu described in step 3. However, if you needed credentials for discovery authentication, it is typical to use the same credentials to log into a discovered node. To do that, use the additional Use the credentials from discovery option from the menu. When the proper credentials have been provided, the Log In button becomes available.
- Click Log In to initiate an iSCSI session.
126.96.36.199.2. DASD storage devices
Figure 18.32. Add DASD Storage Target
0.0.0204. Enter the device number of the DASD you want to attach, and click Start Discovery.
188.8.131.52.3. FCP Devices
- Interactive creation of an FCP device is only possible in graphical mode. It is not possible to interactively configure an FCP device in a text mode installation.
- Use only lower-case letters in hex values. If you enter an incorrect value and hit the Start discovery button, the installation program will display a warning and allow you to edit the configuration information and retry the discovery attempt.
- For more information on these values, consult the hardware documentation and check with the system administrator who set up the network for this system.
Figure 18.33. Add FCP Device
DASD=from the parameter or CMS configuration file to indicate no DASD is present.
184.108.40.206.4. Configure FCoE Parameters
Figure 18.34. Configure FCoE Parameters
- Use DCB
- Data Center Bridging (DCB) is a set of enhancements to the Ethernet protocols designed to increase the efficiency of Ethernet connections in storage networks and clusters. Enable or disable the installation program's awareness of DCB with the check box in this dialog. This option should only be enabled for network interfaces that require a host-based DCBX client. Configurations on interfaces that implement a hardware DCBX client should leave this check box empty.
- Use auto vlan
- Auto VLAN indicates whether VLAN discovery should be performed. If this box is checked, then the FIP (FCoE Initiation Protocol) VLAN discovery protocol will run on the Ethernet interface once the link configuration has been validated. If they are not already configured, network interfaces for any discovered FCoE VLANs will be automatically created and FCoE instances will be created on the VLAN interfaces. This option is enabled by default.