Users Guide

2. If you are using a single path (using the SD device directly without LVM or multipathd), you must manually unmount the file system
and run ehcmcli login --target target to recreate the EqualLogic DM devices after unmounting the file system. You can also
run ehcmcli dm create to recreate all DM devices instead of ehcmcli login, which only affects the devices for a single
volume.
3. Remount the file systems using the new top-tier device names (/dev/eql/volume-name).
4. Using the new top-tier device names, edit /etc/fstab to mount the file systems on the next reboot.
Block Device Access
For applications or services that use block devices directly, consult the documentation for those applications or services, then reconfigure
them to use the appropriate new top-tier devices (/dev/eql/volume-name). This reconfiguration might require restarting or
interrupting the application or service and running ehcmcli login --target target or ehcmcli dm create to refresh the
EqualLogic MPIO DM devices before restarting the application or service. For more details, see step 3 in the procedure in Directly
Mounted File Systems.
Excluding Specific Volumes
If a block device cannot be migrated to use EqualLogic MPIO (such as a SAN boot volume), add the following section to the end of
eql.conf to exclude the device from MPIO:
[MPIO Volume Params volume-name]
EnableMPIO = false
For more details, see Setting Volume-Specific Configuration Parameters.
Step 3: Reconfigure multipathd
The Linux multipath tools provide facilities to create and manage multiple connections from the Linux host to the target group member.
These connections are combined on the Linux host in the form of a Device Mapper (DM) device that provides fault-tolerance and
improved performance.
NOTE:
If you are using the Linux multipathing tools, HIT/Linux provides automated facilities that without the multipathd
service create and maintain the necessary multipath devices for connections to volumes on PS series group.
Reconfigure it so that it does not interfere with HIT/Linux.
The multipathd daemon is required to manage PowerStore devices. Therefore, if you want to import existing EqualLogic
storage to PowerStore, make sure that the multipathd service is running. For more information about importing to
PowerStore, see the
Importing External Storage to PowerStore Guide .
You must blacklist all EqualLogic devices in the multipath configuration file (multipath.conf). As part of the installation, eqltune
fix introduces blacklist entries that should correctly blacklist all EqualLogic devices.
Run multipath -r to ensure multipathd has completely stopped managing all EqualLogic devices before proceeding to the next step.
NOTE:
By default, SLES 12 distributions do not contain the multipath.conf file in /etc. Copy the file from the /usr/
share/doc/packages/multipath-tools/ directory using the following command:
$cp /usr/share/doc/packages/multipath-tools/multipath.conf.synthetic /etc/multipath.conf
If you have already installed HIT/Linux, run eqltune fix to blacklist the EqualLogic devices. If you have already
created volumes, log out of the volumes and then log back in. (This action is not required if you have not yet installed
HIT/Linux.)
Step 4: Complete the Installation
After configuring all software to use EqualLogic top-tier multipath devices, answer Yes to the following question from the installation
script to begin active management of the MPIO and iSCSI sessions:
Are you ready to continue and enable active MPIO and
iSCSI session management (Yes/No) [No]?
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Migrating to HIT Linux Multipath I/O