Veritas Volume Manager 5.1 SP1 Release Notes HP-UX 11i v3 (5900-1518, August 2011)

Table 6 Hitachi arrays with new array names
New namePrevious name
Hitachi_USPTagmaStore-USP
Hitachi_NSCTagmaStore-NSC
Hitachi_USPVTagmaStoreUSPV
Hitachi_USPVMTagmaStoreUSPVM
Hitachi_R700<New Addition>
New array names are based on the Model Number 8x.
For example, SMS_100, AMS_2100, AMS_2300,
AMS_2500, etc.
Hitachi AMS2300 Series arrays
In addition, the Array Support Library (ASL) for the enclosures XIV and 3PAR now converts
the cabinet serial number that is reported, from Hex to Decimal, to correspond with the value
shown on the GUI. The persistence of the enclosure name is achieved with the /etc/vx/
array.info file, which stores the mapping between cabinet serial number and array name.
Because the cabinet serial number has changed, any enclosure attribute set for these arrays
may be reset to the default value after an upgrade to VxVM 5.1 SP1.
The cabinet serial numbers are changed for the following enclosures:
◦ IBM XIV Series arrays
◦ 3PAR arrays
Workaround
Before upgrading to VxVM 5.1 SP1, check for non-default settings in the array models having
new array names or cabinet serial numbers, by using the following command:
vxdmpadm getattr enclosure <enclosure name>
If there are any enclosure attributes with non-default settings, manually re-configure them using
the following command, after upgrading to VxVM 5.1 SP1:
vxdmpadm setattr enclosure <enclosure name>
• Problem
If a disk's media name is greater than or equal to 27 characters, certain operations, such as
diskgroup split or join, can fail and an error similar to the following may be displayed:
VxVM vxdg ERROR : vxdg move/join dg1 dg2 failed subdisk_name : Record
already exists in disk group
VxVM uses disk media names to create subdisk names. If multiple subdisks are under the same
disk, then the serial number, starting from 1, is generated and appended to the subdisk name
so as to identify the given subdisk under the physical disk. The maximum length of the subdisk
name is 31 characters. If the disk media name is long, then the name is shortened to make
room for serial numbers. Therefore, two diskgroups can end up having same subdisk names
due to this truncation logic, despite having unique disk media names across diskgroups. In
such scenarios, the diskgroup split or join operation fails.
Workaround
To handle this issue, HP recommends that disk media name length must be less than 27
characters.
• Problem
While creating shared disk groups on slave nodes, by shipping the command issued by the
slave node to the master node for execution (command shipping), the disk group creation can
fail and an error similar to the following may be displayed:
Known Problems And Workarounds 13