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| Displaying extended device attributes | ||
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Device Discovery Layer (DDL) extended attributes are attributes or flags corresponding to a Veritas Volume Manager (VxVM) or Dynamic Multi-Pathing (DMP) LUN or disk and that are discovered by DDL. These attributes identify a LUN to a specific hardware category.
Table: Categories for extended attributes describes the list of categories.
Table: Categories for extended attributes
Each LUN can have one or more of these extended attributes. DDL discovers the extended attributes during device discovery from the Array Support Library (ASL). If Veritas InfoScale Operations Manager (VIOM) is present, DDL can also obtain extended attributes from the VIOM Management Server for hosts that are configured as managed hosts.
The vxdisk -p list command displays DDL extended attributes. For example, the following command shows attributes of std, fc, and RAID_5 for this LUN:
# vxdisk -p list DISK : tagmastore-usp0_0e18 DISKID : 1253585985.692.rx2600h11 VID : HITACHI UDID : HITACHI%5FOPEN-V%5F02742%5F0E18 REVISION : 5001 PID : OPEN-V PHYS_CTLR_NAME : 0/4/1/1.0x50060e8005274246 LUN_SNO_ORDER : 411 LUN_SERIAL_NO : 0E18 LIBNAME : libvxhdsusp.sl HARDWARE_MIRROR: no DMP_DEVICE : tagmastore-usp0_0e18 DDL_THIN_DISK : thick DDL_DEVICE_ATTR: std fc RAID_5 CAB_SERIAL_NO : 02742 ATYPE : A/A ARRAY_VOLUME_ID: 0E18 ARRAY_PORT_PWWN: 50:06:0e:80:05:27:42:46 ANAME : TagmaStore-USP TRANSPORT : FC
The vxdisk -x attribute -p list command displays the one-line listing for the property list and the attributes. The following example shows two Hitachi LUNs that support Thin Reclamation through the attribute hdprclm:
# vxdisk -x DDL_DEVICE_ATTR -p list DEVICE DDL_DEVICE_ATTR tagmastore-usp0_0a7a std fc RAID_5 tagmastore-usp0_065a hdprclm fc tagmastore-usp0_065b hdprclm fc
User can specify multiple -x options in the same command to display multiple entries. For example:
# vxdisk -x DDL_DEVICE_ATTR -x VID -p list
DEVICE DDL_DEVICE_ATTR VID tagmastore-usp0_0a7a std fc RAID_5 HITACHI tagmastore-usp0_0a7b std fc RAID_5 HITACHI tagmastore-usp0_0a78 std fc RAID_5 HITACHI tagmastore-usp0_0a79 std fc RAID_5 HITACHI tagmastore-usp0_065a hdprclm fc HITACHI tagmastore-usp0_065b hdprclm fc HITACHI tagmastore-usp0_065c hdprclm fc HITACHI tagmastore-usp0_065d hdprclm fc HITACHI
Use the vxdisk -e list command to show the DLL_DEVICE_ATTR property in the last column named ATTR.
# vxdisk -e list DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR tagmastore-usp0_0a7a auto - - online c10t0d2 std fc RAID_5 tagmastore-usp0_0a7b auto - - online c10t0d3 std fc RAID_5 tagmastore-usp0_0a78 auto - - online c10t0d0 std fc RAID_5 tagmastore-usp0_0655 auto - - online c13t2d7 hdprclm fc tagmastore-usp0_0656 auto - - online c13t3d0 hdprclm fc tagmastore-usp0_0657 auto - - online c13t3d1 hdprclm fc
For a list of ASLs that supports Extended Attributes, and descriptions of these attributes, refer to the hardware compatibility list (HCL) at the following URL: