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Operating Systems AIX Migrating LUNs to new storage array Post 303038794 by eckertd on Friday 13th of September 2019 10:07:26 AM
Old 09-13-2019
One thing I would add would be before importing the DG, have the storage team tell you what queue_depth you should be using and set accordingly

Code:
# chdev -l hdisknn -a queue_depth=#

If you've already imported, you can still run the above, but append "-P" to the end. This will make the change in the ODM (CuDv, I believe) and the settings will be applied next reboot.
 

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ql-dynamic-tgt-disc(8)					       System Administration					    ql-dynamic-tgt-disc(8)

NAME
ql-dynamic-tgt-lun-disc - Scans for newly added LUNs. SYNOPSIS
ql-dynamic-tgt-lun-disc [OPTIONS] DESCRIPTION
Dynamic TGT-LUN Discovery Utility This utility scans for newly added LUNs. After adding new LUNs, you do not need to unload, then load the QLogic FC driver or reboot the system To begin scanning the LUNs issue following command: # /usr/sbin/ql-dynamic-tgt-lun-disc -al, --allow-lip LIP is not issued by default, even if it is required for scanning new LUNs Setting this option, allows the utility to issue LIP. -cl, --current-luns Displays LUNS currently present -e, --extended-scan Use this option as "-e | --extended-scan". to rescan LUNs. This will identify any change in attributes of existing LUNs. This option can be used in combination of scan/refresh or max luns -h, --help, ? Prints this help message -i, --interactive Use this option to use the menu driven program -is, --iscsi Use this option to operate on ISCSI HBAs, this option can be used in combination of any other supported option. -m, --max-lun To set the maximum LUNs to be scanned -p, --proc Use PROC file system for LUN scanning -r, --refresh To refresh, that is remove LUNs that are lost use the options "-r|--refresh". This will remove the LUNs which no more exist. -s, --scan [ -r|--refresh ] The QLogic LUN scan utility re-scans all the devices connected to the QLogic HBA SEE ALSO
ql-lun-state-online(8), ql-hba-snapshot(8), ql-set-cmd-timeout(8) Matthias Schmitz <;matthias@sigxcpu.org> July 2009 ql-dynamic-tgt-disc(8)
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