LVM with MC/Service Guard

[Sebastián Lozano]

Hi, everybody.

I have a two-node cluster with MC/Service Guard and LVM

Can anybody tell me how to add a new logical volume to an existing and exported volume group without taking the volume group offline?

Thanks.

[RAC_1]

If you have enough space then lvcreate.
(Or else add the pv and then vgextend etc)

Then vgexport (with -p option) to prepare the map file and importing the same vg on another node.

vgexport -pvs -m /tmp/vgxx.map vgxx

rcp/scp this map file to another node in cluster

Then on another node.

vgexport vgxx.

mkdir /dev/vgxx
mknod /dev/vgxx/group c 64 0x0x0000
vgimport -vs -m /tmp/vgxx.map vgxx

MC/SG takes care at VG level. You can add lv without worrying abt taking it offline.

[Mark Grant]

Just make the volume group as normal then do a vgexport of the volume group with -p option and the -m option to make the map file.

On the other node, vgimport it, again with the same two options.

[Sebastián Lozano]

Worked fine.

Thanks a lot.

[Kent Ostby]

Here's a certified document for this issue for future reference:

http://www1.itrc.hp.com/service/cki/search.do?category=c0&mode=id&searchString=UXSGLVKBAN00000008+&searchCrit=allwords&docType=Security&docType=Patch&docType=EngineerNotes&docType=BugReports&docType=Hardware&docType=ReferenceMaterials&docType=ThirdParty&search.x=10&search.y=2

Best regards,

Kent M. ostby