Clearing the udid_mismatch flag for non-clone disks

If the disk is not a cloned disk, this behavior could result in errors during disk group import, depending on the import flags. When a disk group is imported, VxVM may skip cloned disks. Also, the import may fail because a disk group has a combination of cloned and non-cloned disks.

If the disk is not a cloned disk, you must manually clear the udid_mismatch flag on the disk before the disk group import can succeed.
Note:
In a cluster, perform all the steps on the same node. (i.e. freeze & offline service group etc. )
To clear the udid_mismatch flag from a disk
  1. Retrieve the refreshed list of disks showing the udid_mismatch flag or the clone_disk flag. Use one of the following methods:
    • Run the following commands:
      # vxdisk scandisks
      # vxdisk list | egrep "udid_mismatch|clone_disk"
    • Or, run the following command:
      # vxdisk -eoalldgs list | egrep "udid_mismatch|clone_disk"
  2. If the disks are part of an imported disk group, deport the disk group.
    # vxdg deport dgname
  3. Clear the udid_mismatch flag on all non-clone disks identified during step 1.
    # vxdisk updateudid diskname
  4. Clear the clone flag on non-clone disks.
    # vxdisk set diskname clone=off
  5. Import the disk group if it was deported during step 2
    # vxdg  import dgname

Comments

Post a Comment

Popular posts from this blog

HP-UX virtual Machine Cheat Sheet

HP VM Cheat Sheet  1) How to Start HP VM?  On a host a)  # vi / etc / rc.config.d / hpvmconf      # Set to 1 (0) to enable (disable) Integrity VM at boot time.              HPVM_ENABLE=1 #  / sbin / init.d / hpvm  start Note: When host is rebooted it will start all the guest by default      b)   Starting HPVM on the guest   #    hpvmstart  –P  guestname 2) How to Stop HP VM? # shutdown –hy  0    (gracefully shutdown, from guest OS)             # hpvmstop  -P guestname  ( forced shutdown from host – not recommended)   3) How to identify  Identify Host or Guest using hpvminfo command?  Examples: Using hpviminfo on a host hpvminfo   (-v, -V)(on host)   #  hpvminfo      hpvminfo : Runnin...
Read more

How to run fdisk in non-interactive mode

fdisk is a command-line utility for disk partition management.If you are going to create one or two partition then its okay to go with manual user intracetion method of fdisk. But if the partition list is a bit longer or we can say its repitative for several machines then need to seek some automation , here we go for probable two solutions for this : - Solution - I : Using below shell script #!/bin/sh sdd="/dev/sdb /dev/sdc /dev/sdd" for i in $sdd do echo "n p 1 t 8e w "|fdisk $i;pvcreate "$i"1;done n = Create new partition p = Primary partition 1 = 1st partition of primary type t = Partition type 8e = Linux LVM Note: two consicuitve blank lines between 1 and t . Solution - II : Using sfdisk Utility This tool allows you to create/change partition tables according to the disk partitioning specification read from standard input. It also allows you to export the partition table specification of a device to a file, so tha...
Read more