ITEM: BY8374L

0516-796 mkvg: Making hdisk3 a physical volume. Please wait

Question:

Env:
  AIX 4.1.4
  RISC 340
  sysback 4.1.1.2

Problem:
  A customer remove a disk and added a new disk to rootvg.
  The customer booted from tape and tried to reinstall from tape
  
  When they were trying to restore they got this error message:

  Making rootvg volume group on disks: hdisk3
  0516-796 mkvg:  Making hdisk3 a pjysical volume.  Please wait.
  /usr/sbin/mkvg[308]: chdev: not found
  0516-862 mkvg:  Unable to create volume group.
        Error creating rootvg - using defaults

   Same error messages as above.

   It appears this problem will always occur when the disk does
   not have a  pvid  (pity)

  How was this handled at sysback 3?  
  Was there a chdev command at sysback 3?
   

HERE ARE TWO WORKAROUNDS TO THIS PROBLEM

--------------------------------------------------------------
THIS ONE WILL REQUIRE A ANOTHER SYSTEM RUNNING THE SAME LEVEL
OF AIX
--------------------------------------------------------------

  1.  Choose the option to perform system maintenance once
      the mkvg command failed.

  2.  From another system running the same level of AIX do this
      cd /usr/lib/methods
      backup -ivq 
      ucfgdevice
      chgdisk
      cfgscdisk
      ctrl d
      restore -Tvq

3.    cd /usr/lib/methods
      restbyname -xvq

4.  Putting the pvid on the disk
    /usr/lib/methods/ucfgdevice -l hdisk\#
    /usr/lib/methods/chgdisk -l hdisk\# -a pv=yes
    /usr/lib/methods/cfgscdisk -l hdisk\#

    NOTE:  If your commands are different than the ones above, replace 
           the command with the output you got from step 4. 
           Do this for all the newly replaced disk in rootvg.

5.  Remaking the volume group
    mkvg -f -y rootvg hdisk\# hdisk\#
    varyonvg rootvg

6.  exit


------------------------
WORKAROUND TWO
DONE ON THE SAME SYSTEM
------------------------

  1.  Choose the option to perform system maintenance after
      the mkvg has failed

  2.  Getting the tape drive in the postion for reading the hd2 
      (/usr image)
      sbdevice -f 1 /dev/rmt\#.1 
      sbread -H /dev/rmt\#.1  (Make sure hd2 is the back image)

  3.  cd /usr
  4.  Get all the methods for the disk that is failed on.  This will 
      need to be run on all disk in rootvg that were newly replaced.  
      "DISK THAT DON'T HAVE A PVID IN ROOTVG"
       lsdev -Cl hdisk\# -r Change
      lsdev -Cl hdisk\# -r Configure
      lsdev -Cl hdisk\# -r Unconfigure
         Remember instead of /etc/methods it is /usr/lib/methods

      In our case it was chgdisk, cfgscdisk and ucfgdevice

5.  sbread /dev/rmt0.1 | restbyname -xvqf- ./lib/methods/chgdisk 
    ./lib/methods/cfgscdisk ./lib/methods/ucfgdevice

6.  Putting the pvid on the disk
    /usr/lib/methods/ucfgdevice -l hdisk\#
    /usr/lib/methods/chgdisk -l hdisk\# -a pv=yes
    /usr/lib/methods/cfgscdisk -l hdisk\#

    NOTE:  If your commands are different than the ones above, replace 
           the command with the output you got from step 4. 
           Do this for all the newly replaced disk in rootvg.

7.  Remaking the volume group
    mkvg -f -y rootvg hdisk\# hdisk\#
    varyonvg rootvg

8.  Setting the tape back in postion
    sbdevice -r /dev/rmt\#
    sbdevice -f 5 /dev/rmt\#.1
    sbread -H /dev/rmt\#.1  
       It should state it is the backup of hd4

8.  exit

This corrected the problem.  This is fixed in
sysback 4.1.1.3

Action Plan:
  Sending sysback 4.1.1.4 to the customer



Support Line: 0516-796 mkvg:  Making hdisk3 a physical volume.  Please wait ITEM: BY8374L

Dated: April 1997 Category: N/A

This HTML file was generated 99/06/24~13:30:19

Comments or suggestions?
Contact us