Seagate ST318404LC Guida Utente Scaricare il pdf (Pagina 34)

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

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Since this new LUN shares the same Volume Group name and Volume Group Instance number as

“vgdemo”; we will need to create a new Volume Group and change the Instance number on this LUN.

Type: ls –la /dev/*/group | awk ‘{print $6}’

(This tells us that only VGID 0 and 1 are in use, we will create the next Volume Group with VGID 2).

0x000000

0x010000

Type: mkdir –p /dev/vgdemo_import; mknod /dev/vgdemo_import/group c 64 0x020000

Type: vgchgid /dev/rdsk/c11t0d3

We would finally import the new LUN with the following command.

Type: vgimport –v vgdemo_import /dev/dsk/c11t0d3

Warning: A backup of this volume group may not exist on this machine.

Please remember to take a backup using the vgcfgbackup command after activating the volume group.

Activate this new Volume Group.

Type: vgchange –a y /dev/vgdemo_import

Activated volume group.

Volume group "/dev/vgdemo_import" has been successfully changed.

And extend the Volume Group with the alternate path to this LUN.

Type: vgextend /dev/vgdemo_import /dev/dsk/c47t0d3

Volume group "/dev/vgdemo_import" has been successfully extended.

Volume Group configuration for /dev/vgdemo_import has been saved in

/etc/lvmconf/vgdemo_import.conf

As a manner of best practice, we will then “fsck” this new Logical Volume and mount it to a new

directory path. This would conclude the procedure in bringing this Volume back to the same host.

Type: fsck –F vxfs /dev/vgdemo_import/lvol1

file system is clean - log replay is not required

Type: mkdir –p /vgdemo_import/lvol1

Type: mount –F vxfs –o largefiles /dev/vgdemo_import/lvol1 /vgdemo_import/lvol1

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Seagate ST318404LC Guida Utente Pagina 34