LVM and User administration commands on aix

LVM commands

1. Adding LUN.

#extendvg vg name pv name

2. creating Volume Group.

#mkvg –y vg name physical volume

3. creating Logical volume.

#mklv –y lv name -t file system volume group number of LP physical volume


4. creating file system.

#crfs –v file system type -g volume group -a size= size in M -m mt point

5. increasing & Decreasing file system.

#chfs -a size= +4194304 MOUNT_POINT

#chfs -a size=-16M MOUNT POINT

6. file integrating checking.

#fsck file

7. mount /umount the file systems.

# mount /dev/fslv02 /test
# umount /test

8. File permission /ownership changes.

#chmod u=permission,g=permission,o=permission file
#chown –R owner:group file

9. Rootvg mirroring

#mirrorvg rootvg new and empty pv

OR

#mklvcopy lvname copy pv


User Administration Commands

1) Create the user

To create the user account with the default values in /usr/lib/security/mkuser.default

#mkuser username

To create the user account as an administrator

#mkuser –a username

2) Remove the user

To remove the user from the local system

#rmuser username

To remove the user with its attributes including user authentication information.,

#rmuser –p username

3) To reset a password

#passwd username

4) To unlock the user Id

#chuser “account_locked=false” userid

5) To set a non expiry password for the user

#chsec –f /etc/security/user –a maxage=0

6) To change the characteristics of the user

#chuser –a attribute=value