Mirror Logical Volume in another volume group

[Marcelo De Florio_1]

Howcan I mirror a logical volume un another volume group ?

MDF

[James R. Ferguson]

Hi Marcelo:

You can't. HP-UX MirrorDisk/UX software implements mirroring at the *logical volume* level. Since a logical volume belongs to a volume group, you cannot mirror a paricular logical volume (say /vg01/lvol1) on anything but /vg01.

Regards!

...JRF...

[Sanjay_6]

Hi Marcelo,

You cannot mirror a LV if you expect the primary and the mirror to stay on different VG.

Hope this helps.

Regds

[Deshpande Prashant]

HI
With HP-UX the mirroring of logical volumes have to be within the same volume group.

Thanks.
Prashant Deshpande.

[Darrell Allen]

Hi Marcelo,

Mirroring on HPUX is provided by MirrorDisk/UX package. It's an added cost package from HP. It requires logical volumes be mirrored within the volume group.

Darrell

[Marcin Wicinski]

Hi,
mirroring in another volume group is not possible, but you can use phisical volume groups. then you can build two PVG's whithin vg and mirror lvols between pv in different PVG.

[Marcin Wicinski · Accepted solution]

Hi again,
Distributed File System:
# cd /dev
# mkdir vg01
# mknod /dev/vg01/group c 64 0x010000
# vgcreate -g vg01a pv1 pv2
# vgextend -g vg01b pv3 pv4
# lvrcreate -s g -D y -l 2 /dev/vg01
# lvextend -m 1 /dev/vg01/lvol1
# lvextend -L 1024 /dev/vg01/lvol1

Later,