Peta Room

Step 1 Close the source LV  # umount  /fs_on_rootvg Step 2 Copy the source logical volume to the desired volume group. # cplv -v  new_vg  lv_source  this will return  the name of the new logicla volum, such as lv00 Step 3 JFS and JFS2 file systems require a log device. run  lsvg -l <vg_name> , if JFS or JFS2 log does not exist you have to create it. To make a  new JFS2 log, enter  # mklv -t jfs2log  <vg_name>  1  This will return a new jfs2log volume, such as loblv00. This new log volume will need to be formatted with the logform command .   # logform /d ev/log lv00 Answer yes to destroy. Step 4 change file system's lv and log device  # chfs -a dev=/dev/lv00 -a log=/dev/loblv00 /myfilessytem Step 5 run fsck  to ensure file system integrity. # fsck -p /dev/lv00 Step 6  rmove the source logical volume # rmlv lv_source

These steps describe how to mirror a Rootvg in Aix  environnement. Step1: extend a rootvg to a new pv (hdisk1)            # extendvg rootvg hdisk1 Step2: mirror rootvg           # mirrorvg rootvg  hdisk1 Step3: Make the new disk bootable          # bosboot -ad /dev/ hdisk1 Step4 : Define boot order          # bootlist -m normal hdisk0 hdisk1  Step5: Synchronize Rootvg          # syncvg rootvg  

To  find out how  many HBA you have in your Hp-ux system run : # ioscan -fknC fc  Class     I  H/W Path   Driver S/W State   H/W Type     Description ================================================================= fc        0  0/0/4/1/0  fcd   CLAIMED     INTERFACE    HP AB378-60101      4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1)                         /dev/fcd0 fc        1  0/0/6/1/0  fcd   CLAIMED     INTERFACE    HP AB378-60101      4Gb Single Port PCI/PCI-X Fibre Channel Adapter (FC Port 1)                         /dev/fcd1 fc        2  1/0/4/1/0  fcd   CLAIMED     I...

To  find the total size of files :  $ ls -l | grep ^- | awk '{som+=$5}END{print "Total files size  : ", som}'

Command to check RAM in AIX UNIX The bootinfo command uses the device configuration databases in information searches. Just type the following command as the root user: bootinfo -r It will displays amount of real memory in kilobytes. bootinfo command may not be available in latest AIX UNIX version, try following command: $ lsattr -El sys0 | grep realmem svmon command - Captures and analyzes a snapshot of virtual memory The svmon command displays information about the current state of memory. The displayed information does not constitute a true snapshot of memory, because the svmon command runs at user level with interrupts enabled. To print out global statistics, type: # svmon -G Read the man page of svmon for more information.

To reduce the size of a logical volume, use the lvreduce command. If the logical volume contains a file system, be sure to umount it and reduce the file system first. Umount the file system # umount   /file_system_name Check if all data structures of you logical volume are cleaned. # fsck -f /dev/vgname/lvname   Resize the file system # resize -p /dev/vgname/lvname 500M Reduce the logical volume  # lvreduce -L 500M /dev/vgname/lvname  Checking   df -h /file_system_name

To increase the size of a Logical Volume, use the   lvextend command. After extending the Logical volume, you will need to increase the size of associated file system , # lvextend -L 1500M /dev/vgname/lvname After it is necessary to increase the file system size to match. # resize2fs -p /dev/vgname/lvname -p option show the progress of the operation.