hacmp question

[alexia32]

hello

I need to migrate some disks to new ones on a cluster HACMP.
I suppose I can use migratepv command.
First thing I will do is add those new disks to the cluster via CSPOC and then just run migratepv.
I didn;t find anything on the man migratepv or ibm about hacmp and disk migration

Let me know if this is not the good way to do

I dont; have outages allowed and they don;t want to do failover failback so all needs to be done online without interruption impact cluster...

Thanks in advance
cheers
Al.

 

[khalidaaa]

Hi Al,

I don't see any problems with your process.

As long as you add the disk to the cluster then it will be treated just as any normal disk migration with migratepv!

1.To move physical partitions from hdisk1 to hdisk6 and hdisk7, enter: 

migratepv hdisk1 hdisk6 hdisk7Physical partitions are moved from one physical volume to two others within the same volume group.

2.To move physical partitions in logical volume lv02 from hdisk1 to hdisk6, enter: 
migratepv -l lv02 hdisk1 hdisk6 

Only those physical partitions contained in lv02 are moved from one physical volume to another.

http://publib.boulder.ibm.com/infoc...=/com.ibm.aix.cmds/doc/aixcmds3/migratepv.htm

Regards,
Khalid

 

[alexia32]

thanks a lot

 

[MoreFeo]

I have a similar migration in some days, and what we were planning is to use cspoc menus to mirror and unmirror, instead of migratepv.

We've been told that if you just do migratepv on one node, the other node is not aware of possible changes. If you make any changes on a shared vg from command line (instead of hacmp menu) you should do varyonvg -b (to break disk locks) on the active node, and then importvg -L (to learn changes) on the passive node.

Not sure about all this, but it's what we've been told.

 

[ogniemi]

I think you can also "Synchronize a Shared Volume Group Definition" after migratepv... (I think final reducevg would do it as well)

smitty cl_updatevg.hdr

indeed, there are no cspoc dedicated migratepv script co it would be ok to use common migratepv...


# grep "' cl_" /usr/sbin/cluster/cspoc/smitlvm
# $1 = '-1' cl_chlv
# '-2' cl_chfs
# '-6' cl_lslv
# '-7' cl_chlv dialog
# '-8' cl_rmlv
# '-9' cl_rmfs
# '-10' cl_chfs
# '-11' cl_lspvsmit
# '-12' cl_extendvg
# '-13' cl_reducevg
# '-14' cl_importvg
# '-15' cl_mirrorvg
# '-16' cl_unmirrorvg
# '-17' cl_mklv
# '-18' cl_extendlv
# '-19' cl_mklvcopy
# '-20' cl_rmlvcopy
# '-21' cl_syncvg
# '-23' cl_lsfreedisks