Users Guide

To log in to an MPIO volume, specify:

# ehcmcli login --target target-name --portal portal

where target-name indicates the full iSCSI-qualified name or a volume name for the PS Series group target node, and portal indicates

iSCSI portal (group IP address or name).

NOTE: You must specify the full iSCSI-qualified name in

target-name

if there are multiple volumes with identical names.

The appropriate device to mount is returned by the ehcmcli login command. For example:

# ehcmcli login --target iqn.2001-05.com.equallogic:0-290c06-52f7c99c6-

1a2000001aa4f479-myvolume

/dev/eql/myvolume

NOTE: Unlike logging in using iscsiadm, you do not need to specify the iface record; ehcmcli selects the interfaces

based on your included subnets.

After you create a single session, the EqualLogic Host Connection Manager (ehcmd) will analyze the configuration and create additional

iSCSI sessions as appropriate. See Multipath I/O Sessions for more information.

When complete, an iSCSI session is initialized for the appropriate PS Series volume, /dev/eql/volume-name, and the volume is

available for use. All further iSCSI management by ehcmd is transparent to any application using /dev/eql/volume-name. For more

details, see Multipath Device Configuration.

Logging In to an MPIO Volume

After you configure multipath I/O and create volumes on the PS Series group, you need to create at least one iSCSI session to the

volume.

Mount an MPIO Volume

To use a volume with multipath I/O:

1. Confirm the name of the device to mount by running ehcmcli status. Look for the device to mount line:

Device to mount: /dev/eql/volume-name

For example:

Device to mount: /dev/eql/VolA

2. Build a Linux file system. For example:

# mkfs.ext4 /dev/eql/VolA

For a list of supported file systems, see Supported File systems.

3. Specify a directory and create a mount point for the new volume. For example

# mkdir /mount/VolA

# mount /dev/eql/volA /mount/VolA

You can now write files to /mount/VolA

NOTE:

Configuring Multipath I/O Devices 31