Add logical volume in an existing shared volume group.

[mahbub]

Dear all,

1.Device file defarent in lvmtab on both nodes under vgicon2.
2.active active two nodes cluster.

I want to add lvol with vgicon2.

How i will add logical volume in an existing shared volume group without same device file on both nodes in cluster environment?.


I am attaching /etc/lvmtab info.

Anyboday help me for this issue.

Best regards
Mahbub

[Michael Steele_2]

Hi

You need a local disk to vgicon2, I assume that's a hostname for a server, if not then please provide the hostnames.

You need a local disk with a new volume group. Refer to vg00 on both boxes, for example. They are local to both machines because the O/S has to reside on both machines.

[Michael Steele_2]

Ok, vgicon2 is a volume group on a node. So its a shared vg to both nodes. See answer above.

[Aneesh Mohan]

Hi Mahbub,

On iconprod
-------------

#vgchange -c n -S n vgicon2
#vgchange -a y vgicon2
#lvcreate -L xxM -n lvname /dev/vgicon2
#newfs -F vxfs -o largefiles /dev/vgicon2/rlvname ----> if you are using raw chunk then ignore this.
#vgexport -v -s -p -m /tmp/vgicon2.map
#vgchange -a n vgicon2


On tabsprod
-----------
#vgchange -a n vgicon2
#ll /dev/vgicon2/group ----------> note down the minor number
#vgexport vgicon2
#mkdir /dev/vgicon2
#mknod /dev/vgicon2/group c 64 0xyy0000
#vgimport -v -s -m /tmp/vgicon2.map vgicon2
#vgchange -c -y -S y vgicon2


Aneesh

[mahbub]

Hi Aneesh

Thanks for your mail.Here device file is not same under vgicon2 and others vg. I need to add 100GB in vgicon2 and create new file system.I have created new lun present this lun on both nodes.but here i found new device file on b oth nodes which are same device file.At this situation I need the procedure.

iconprod:[/] # strings /etc/lvmtab
/dev/vg00
/dev/dsk/c2t1d0
/dev/dsk/c2t0d0
/dev/vgtabs2
/dev/dsk/c9t0d1
/dev/dsk/c9t0d2
/dev/dsk/c11t0d1
/dev/dsk/c11t0d2
/dev/dsk/c4t0d1
/dev/dsk/c4t0d2
/dev/dsk/c6t0d1
/dev/dsk/c6t0d2
/dev/vgicon1
/dev/dsk/c9t0d6
/dev/dsk/c11t0d6
/dev/dsk/c4t0d6
/dev/dsk/c6t0d6
/dev/vgicon2
H:y.
/dev/dsk/c9t0d4
/dev/dsk/c9t0d5
/dev/dsk/c11t0d4
/dev/dsk/c4t0d4
/dev/dsk/c6t0d4
/dev/dsk/c11t0d5
/dev/dsk/c4t0d5
/dev/dsk/c6t0d5
/dev/vgtabs1
/dev/dsk/c9t0d3
/dev/dsk/c9t0d7
/dev/dsk/c11t0d3
/dev/dsk/c11t0d7
/dev/dsk/c4t0d3
/dev/dsk/c4t0d7
/dev/dsk/c6t0d3
/dev/dsk/c6t0d7

tabsprod:[/] # strings /etc/lvmtab
/dev/vg00
/dev/dsk/c2t1d0
/dev/dsk/c2t0d0
/dev/vgtabs1
/dev/dsk/c8t0d3
/dev/dsk/c10t0d3
/dev/dsk/c4t0d3
/dev/dsk/c6t0d3
/dev/dsk/c4t0d7
/dev/dsk/c6t0d7
/dev/dsk/c8t0d7
/dev/dsk/c10t0d7
/dev/vgtabs2
/dev/dsk/c8t0d1
/dev/dsk/c8t0d2
/dev/dsk/c10t0d1
/dev/dsk/c4t0d1
/dev/dsk/c6t0d1
/dev/dsk/c10t0d2
/dev/dsk/c4t0d2
/dev/dsk/c6t0d2
/dev/vgicon1
/dev/dsk/c8t0d6
/dev/dsk/c10t0d6
/dev/dsk/c4t0d6
/dev/dsk/c6t0d6
/dev/vgicon2
H:y.
/dev/dsk/c8t0d4
/dev/dsk/c8t0d5
/dev/dsk/c10t0d4
/dev/dsk/c10t0d5
/dev/dsk/c4t0d4
/dev/dsk/c4t0d5
/dev/dsk/c6t0d4
/dev/dsk/c6t0d5

Regards
Mahbub

[Michael Steele_2]

Why, exactly, are you saying "..I have to create a lvol in vgicon2?...". Are you being told to do this? If so then you need to go back to whoever told you to do this anc clarify exactly what a shared disk and volume group are, cuz you don't look like you've ever heard of either.

And no, you can not create a local lvol in the shared by two nodes vg vgicon2! So either you have the wrong instructions or you just don't get it and probably shouldn't be doing this job.