Changing An Hdlm Management-Target Device; Changing Hdisk Attributes - Hitachi XP P9500 User Manual

4 If the device to be deleted is registered in a volume group, execute the
.
following command to inactivate the volume group:
# varyoffvg volume-group-name
5 Execute the following command to delete the device (or devices):
.
¢
¢
6 Execute the following command to check that device deletion was
.
successful:
# /usr/DynamicLinkManager/bin/dlnkmgr view -path
If you deleted all devices, check that the following message appears:
KAPL01019-W The target path was not found. Operation name = view
If you deleted a specific device, check that the deleted device (hdisk
name) is no longer displayed.

Changing an HDLM Management-Target Device

Note
If you execute the chdev command while a path is in error status, that
path will be deleted. In such a case, first recover from the path error,
then re-execute the cfgmgr command, and finally perform the following
steps:
1 Inactivate the volume group used by HDLM.
.
# varyoffvg volume-group-name
2 Execute the chdev command to change attributes.
.
The following example changes the queue depth and timeout value:
# chdev -l hdisk-name -a queue_depth=8 -a rw_timeout=60
3 Inactivate the volume group used by HDLM.
.
# varyonvg volume-group-name

Changing hdisk attributes

hdisk attributes consist of default values and values actually used. When a
new hdisk is configured, or deleted and then reconfigured, the actual value
for hdisk attributes is set using the default values.
The HDLM default settings modification utility (dlmchpdattr) can be used to
change the default values.
Note:
4-16
To delete all devices
# /usr/DynamicLinkManager/bin/dlmrmdev
To delete a specific device
# rmdev -dl hdisk-name
HDLM Operation
Hitachi Dynamic Link Manager User Guide (for AIX(R))