creating vg with alternate links

[S.S.]

Hi All,
Please help me how to create a volume group with alternate Links?

Please respond me immediate, i am creating the vg now.

Thanks!!

[Torsten.]

Just use "vgextend" to create the alternate links, that's it.

[Jupinder Bedi]

you add the alternate path of the PV to the volume group using the vgextend command

vgextend /dev/vgname /dev/dsk/alt-pv-path

Do not run pvcreate on the alternate path, the vgextend will know that the new PV is the alternate path of an existing PV.

[Kapil Jha]

Yeh alternate links are no special things....you just have to add those as normal disks.
inside vg if one disks are added with other name it would show as alternate link.

BR,
Kapil+

[Torsten.]

Do you use hp-ux 11.31 or a lower version with additional multipathing software (e.g. autopath)?

[S.S.]

Hi All,

Actually for the creation of new filesystem.

I have created a vdisk at EVA, i presented the LUNS to the host. Later i created vg and created filsystem with 100gb capacity.

The New device file created by insf and the device file name is /dev/dsk/c36t1d5.

I have created Vg by using the above PV.

How can i get the device files for the alternate links.

we are using "autopath".

MY OS version is HP-UX 11.11

Kindly suggest me how can i create a device files for the alternate links.

[Kapil Jha]

do
#insf -e
#cd /dev/dsk
#ls -lrt

check the dates of device files created same tXdX are alternate links.

number of alternate links would be same as number of FC cards configured.

This is one of the easient way I used to follow.

BR,
Kapil+

[Torsten.]

Consider to check with "autopath discover" and "autopath display".

[Jupinder Bedi]

autopath display and autopath discover is the correct answer to you query.

[S.S.]

Hi,

Thank you All.

I am able to see the alternate links by using autopath display.

Kapil,

If i use #insf -e without using H/W path then it will install device files for pseudo drivers also right?
Then in that case can we use it ?