Seagate ST318404LC Podręcznik Użytkownika Pobierz pdf (Strona 22)

Dell Compellent Confidential HP-UX Best Practices 11i v2 and 11i v1

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geometry of /dev/rdsk/c27t0d0: nhead=8 nsect=263 ncyl=49837 sectsz=512 rpm=15000 cap=104857600

(where 104857600 x 512KB ~ 50GB LUN)

If this LUN is NOT presently part of a Volume Group, you can now create a Volume Group with the

procedures located here Creating a new Volume Group.

If this LUN is already part of a Volume Group, you would now want to expose the additional capacity of

the LUN to the Volume Group that it is a part of. This is where the “vgmodify” commands come into

use.

Exposing the new capacity to the Volume Group

Prior to expanding the LUN in the Dell Compellent Storage Center, your Volume Group “vgdemo” would

have looked like this; highlighted in RED to reflect current number of PEs (Physical Extents) of the LUN.

--- Volume groups ---

VG Name /dev/vgdemo

VG Write Access read/write

VG Status available

Max LV 255

Cur LV 0

Open LV 0

Max PV 16

Cur PV 1

Act PV 1

Max PE per PV 1919

VGDA 2

PE Size (Mbytes) 16

Total PE 1919

Alloc PE 0

Free PE 1919

Total PVG 0

Total Spare PVs 0

Total Spare PVs in use 0

--- Physical volumes ---

PV Name /dev/dsk/c27t0d0

PV Status available

Total PE 1919

Free PE 1919

Autoswitch On

Proactive Polling On

Though the OS had detected the geometry changes of the LUN (see Expanding the LUN), the Volume

Group to which it belongs is not yet aware of this change. With HP-UX 11i v2, the process to increase

the number of available PEs (Physical Extents) of the LUN within the Volume Group (and thus also

increase the total available capacity of the Volume Group), would need to be performed in OFFLINE

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