Fujitsu ETERNUS Multipath Driver V2, Руководство пользователя

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Chapter 6 Changing the Multipath Configuration (iSCSI Connection for RHEL5, SLES9, or SLES10)
6.2 Storage System Reduction
FUJITSU Storage ETERNUS Multipath Driver V2 User’s Guide for Linux
Copyright 2014 FUJITSU LIMITED P2U3-0031-15ENZ0
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[Example]
4
Use the "iompadm info" command to check that the removed hardware has disappeared
from view.
[Example]
5
Set the iSCSI service and delete the iSCSI target information of the removed storage system.
End of procedure
6.2.2 Reduction with Server Rebooting
Use the following procedure to remove storage systems while the server is shut down.
Procedure
1
If the storage system recognition order has been set, change the settings before removing
the storage system.
• When the storage system reduction reduces the number of storage systems connected to the server
to one or less, execute the "mpdconfig -c" command to clear the storage system recognition order.
[Example]
• When the storage system reduction reduces the number of storage systems connected to the server
to more than one, execute the "mpdconfig -s" command to set the recognition order of the storage
system that is to be removed to last place. If not, the storage systems with a lower recognition order
may not be recognized after rebooting.
[Example]
2
Shut down the server.
3
Detach the hardware.
Disconnect the target storage system from the server (turn the storage system power off, disconnect
the cables, etc.).
# /opt/FJSVmpd/bin/mpdconfig -c
# /opt/FJSVmpd/bin/iompadm info
# /opt/FJSVmpd/bin/mpdconfig -c
# /opt/FJSVmpd/bin/mpdconfig -s
If SCSI disks are accessed using sd* device names then when the server is restarted after changing the
storage system recognition order, the device names will also change. Alter the OS and application
settings as necessary. If by-id names are used, this problem does not occur.