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headbig's avatar
headbig
Level 4
15 years ago

Problem about SFHA on aix 6.1

Recently, I have SFHA installed on two aix 6.0 system which created by IBM powerVM (IBM P550).  These two node will host a oracle database. I installed VOM on a windows server 2003 system and want to manage sfha with it. during the configuration, I got two questions:

environment: every aix node has a rootvg on hdisk0,and these two node will share hdisk1;

1.I want to know if I can convert hdisk0 from LVM to VMVX?
2.if answer for question one is no, can I use VxVM on hdisk1 and leave LVM on hdisk0?

business continuity
Storage Foundation
Troubleshooting
  • Gaurav_S's avatar
    Gaurav_S
    15 years ago

    Hello headbig,

    yes you are right..... you can't convert the disk containing root volume..

    "Volume group conversion limitations"  section clearly states that.....

    ■ A volume group containing the root volume.
    The current release of VxVM on AIX does not support VxVM root volumes.
    Because of this, vxconvert does not convert any volume group that contains
    a rootable volume. Not only is the current root volume off limits, but any
    volume that might be used as an alternate root volume is rejected as well.

    So you need to some how manage with option 2 & leave LVM running on root...

    Gaurav
  • Gaurav_S's avatar
    Gaurav_S
    Moderator
    15 years ago

    HI,

    Answer to question 2 is yes, however it would be highly recommended to keep mirroring on rootdisk for redundancy....

    To answer question 1, read through below articles...

    http://sfdoccentral.symantec.com/sf/5.0MP3/aix/html/sf_migration/ch02s03.htm

    http://sfdoccentral.symantec.com/sf/5.0/aix/manpages/vxvm/vxconvert_1m.html

    I hope you would get answer...

    Gaurav


  • headbig's avatar
    headbig
    Level 4
    15 years ago

    I can find docs on symantec website.
    On page 18 of  veritas storage foundation migration guide 5.0 for aix, it says that there are certain LVM volume configurations that cannot be converted to VxVM. For example, conversion will be fail if a  volume group containing the root volume.

    In my environment, I had rootvg installed on hdisk0, maybe I cannot convert it from LVM to vxvm.

    Anyone can confirm this?

  • Gaurav_S's avatar
    Gaurav_S
    Moderator
    15 years ago

    Hello headbig,

    yes you are right..... you can't convert the disk containing root volume..

    "Volume group conversion limitations"  section clearly states that.....

    ■ A volume group containing the root volume.
    The current release of VxVM on AIX does not support VxVM root volumes.
    Because of this, vxconvert does not convert any volume group that contains
    a rootable volume. Not only is the current root volume off limits, but any
    volume that might be used as an alternate root volume is rejected as well.

    So you need to some how manage with option 2 & leave LVM running on root...

    Gaurav