keep the same shared vg's odm information on different nodes?

[rs6000er]

my production vg has 6 logical disks in fastT700 and this vg is shared vg in tow nodes HACMP cluster. 3 of them are production and another 3 are mirrored by the 3 production.
before i came here, the former administorator did not mirror the vg as normal, he used the command mklvcopy to copy all production lvs to other 3 logical disks within same vg.
becuse of some reasons, i organized the production vg and mirror the 3 production disks to another 3 disks for fault tolerance.
you know, the process cause the different mirrored lvs sequence compared with the old. for example:
old sequence new sequence
hdisk4: hdisk7: hdisk4: hdisk8:
lv001 lv001 lv001 lv001
lv002 lv002 lv002 lv002

then i add tow new disks into this vg.
and now i want to keep the same odm on both nodes and use the command
varyonvg -b -u vg (primary node)
importvg -L vg (standby node)
the error massages show system can not find some lvs and failed.

so, my questions is if i should keep the old sequence and redo this steps as the former to keep the same vg odm.

 

[DSMARWAY]

hi ,
if some LV's are out of sync on the other server , first question

1. did you create the lv's using CSPOC ?
if so this should have updated both servers

2. you can import the volume group on the second node
i.e. importvg -V major number -y v_name hdisk_number

but note you have to varyoff the volume group on server 1
first .

if you don't have any downtime , you can use CSPOC and say increase the logical volume that doesn't exist on 2nd server by 1 PP , then increase filesystem , this should copy the lv on the second server , and hopefully sort your problem out , obviously this doesn't require any outage.

HTH

 

[comtec17]

Why would you mirror the VG's if they are already on a FastT700? This is a disk array with RAID protection already.

 

[rs6000er]

i've already resolve this problem.
1. varyoffvg the production vg on primary node
2. exportvg the production vg on standby node
3. importvg the production vg on standby node
during the process, i've got some error massanges about the the vg odm.

comtec17, of course, fastt has the ablility to keep the data in high availability with RAID. you know, i even met the situation three disks damaged at same time in a 5 disks RAID5.
that is why i have to mirror the tow RAID 5 arraies.