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What is Pvid in AIX?

What is Pvid in AIX?

The Logical Volume Manager (LVM) on AIX uses a Physical Volume Identifier (PVID) to keep track of disk drives that are part of an LVM volume group. This is a system-generated 16-digit number that is stored physically on the hard drive and read into the ODM. Each PVID on a system uniquely identifies one physical volume.

How do I change my Pvid?

Changing the PVID and VGID of rootvg

  1. To set the sys0 device ghostdev attribute to change PVID and VGID of rootvg volume group, enter the following command: chdev -l sys0 -a ghostdev=2.
  2. To list the value of the ghostdev attribute, enter the following command: lsattr -E -l sys0 -a ghostdev.

How do I replace a missing drive in AIX?

Procedure 1: Disk Replacement when the Volume Group is Mirrored

  1. Remove all copies from disk:
  2. Remove disk from volume group:
  3. Remove disk from ODM:
  4. Connect new disk to system (use Hot Plug Disk Replacement Procedure) (May have to shut down if not hot-pluggable)
  5. Add new disk to volume group:
  6. Create new copies:

How do I create a group volume in AIX?

Creating a Volume Group

  1. Create a Volume Group.
  2. Create a Logical Volume within the VG containing a JFS2 filesystem that will be automatically mounted during boot.
  3. Add a disk to the VG and mirror the data across 2 disks.
  4. Display LP>PP mappig and LVCB.

What is a Pvid?

The PVID indicates a VLAN to which the virtual network device needs to be a member, in untagged mode. Any outbound frames from the virtual network that are untagged are tagged with its PVID by the virtual switch. …

How do I create a logical volume in AIX?

Creating log logical volumes

  1. Create new file system log logical volume, as follows: # mklv -t jfslog -y LVname VGname 1 PVname.
  2. Format the log as follows: # /usr/sbin/logform -V vfstype /dev/LVname.
  3. Modify /etc/filesystems and the logical volume control block (LVCB) as follows: # chfs -a log=/dev/LVname /filesystemname.

How do I get rid of Pvid?

RE: remove PVID Adding a new drive to an existing volume group Once the new drive has been configured, ensure that a proper PVID has been written to the drive by running: chdev -l -a pv=clear chdev -l #> -a pv=yes NOTE: On SSA drives, the first chdev command may be omitted.

What is stale PP in AIX?

Stale partitions occur when the second and/or third mirrored copies of data become out of sync. with the primary copy. Look in the error report for the effected disk/s, if you cannot find the disk go through each volume group and run: lsvg -l

How do I mirror a drive in AIX?

There are four steps required in mirroring rootvg:

  1. Mirror rootvg using mirrorvg or mklvcopy.
  2. Make the new mirrored disk bootable by running bosboot.
  3. Add the new mirrored disk to the bootlist.
  4. Reboot the system to disable quorum. (5300-06 and below only)

How do I know if my volume group is normal big or scalable?

How do I know if my volume group is normal, big, or scalable? Run the lsvg command on the volume group and look at the value for MAX PVs. The value is 32 for normal, 128 for big, and 1024 for scalable volume group. If a physical volume is part of a volume group, it contains 2 additional reserved areas.

What is difference between VLAN and Pvid?

You can have many vlan data packets via a switch port with is set as tagged. Untagged ports are member of a vlan and PVID is for non tagged packets arriving at a port on the switch.

What is Pvid in Olt?

PVID is short for Port VLAN identifier. The PVID of a port is the VLAN id that will be assigned to any untagged frames entering the switch on that port (assuming the switch is using port-based VLAN classification). This is a concept that is defined in IEEE 802.1Q.

Where does the PVID come from in Aix?

The Logical Volume Manager (LVM) on AIX uses a Physical Volume Identifier (PVID) to keep track of disk drives that are part of an LVM volume group. This is a system-generated 16-digit number that is stored physically on the hard drive and read into the ODM.

Is there a way to generate a PVID?

The most common way to generate a PVID is to simply add it to a volume group. Alternatively, the chdev command with the pv attribute flag set to yes (chdev –l hdisk# -a pv=yes) may be used to assign a PVID to an hdisk without adding it to a VG.

How do you assign a PVID to a char?

Take every 2 digits of the hex PVID and translate it to octal. This can be done by hand, calculator, script, or web page. values. Each octal char is lead with a backslash-Zero “”.

Where do I find the PVID for a volume?

The PVID is not only recorded in our beloved ODM (object data manager), but is also part of the VGDA (volume group descriptor area) which is written to each physical volume. The most common way to display the PVID for a volume is via the lspv command.