What is upper bound in AIX?

What is upper bound in AIX?

-u upperbound Sets the maximum number of physical volumes for new allocation. The value of the upperbound variable should be between one and the total number of physical volumes. When using super strictness, the upper bound indicates the maximum number of physical volumes allowed for each mirror copy.

How to change the LV name in aix?

Changing the name of a logical volume

  1. Unmount all file systems associated with the logical volume, by typing: unmount / FSname. Where FSname is the full name of a file system.
  2. Rename the logical volume, by typing: chlv -n NewLVname OldLVname.
  3. Remount the file systems you unmounted in step 1 by typing: mount /test1.

How do you increase the size of a logical volume in AIX?

Use the chfs command eg. chfs -a size=+value /usr where value=size in 512-byte blocks to increase by.

How do I close a logical volume in AIX?

Go to the Remove Mount Point field and toggle to your preference. If you select yes, the underlying command will also remove the mount point (directory) where the file system is mounted (if any, and if that directory is empty). Press Enter to remove the logical volume.

How do I find FS in AIX?

At boot time, AIX® attempts to check all the file systems listed in /etc/filesystems with the check=true attribute by running the fsck command.

How do I change file system in AIX?


  1. Take backup of the /testfs either locally or whichever the backtools you are using ( eg: TSM /netbackup)
  2. Unmount the FS associated with the testlv_old ,here its “/testfs”
  3. Change mount point name in /etc/filesystem.
  4. Create new lv “testlv_new”
  5. Create Filesystem with name “/testfs”

How do you change your name on LV?

LV renaming procedure follows below flow : Stop all user/app access to related mount point (on which lvol is mounted) using fuser. Un-mount LV using umount. Rename device names of lvol using mv.

How do I increase filesystem space in AIX?

AIX – How to extend JFS filesystem

  1. Identify the filesystem you want to extend.
  2. Take example to extend /local.
  3. Find out if the volume group it resides on has enough free space to extend [free PP].
  4. If it has enough space, proceed to extend using below command.

How do I increase group size in AIX?

Add the physical volume to the root volume group.

  1. Run the lsvg command to identify the name of the root volume group: AIX# lsvg rootvg.
  2. Expand the root volume group across the new physical volume: AIX# extendvg -f rootvg hdisk1 hdisk1 changed. In some cases, a message similar to the following example might be displayed:

How check VG is mirrored or not in AIX?

From the output of lsvg -M , you can see the 1st and 2nd copy of an lv resides on which disk. After that you can check if that disk belongs to the correct mirror pool or not.

How do you close a logical volume?

To remove an inactive logical volume, use the lvremove command. You must close a logical volume with the umount command before it can be removed. In addition, in a clustered environment you must deactivate a logical volume before it can be removed.