House Keeping in HMC

This section shows how to handle filesystem "/var" utilization in an HMC. Since the /var filesystem holds all the log files, performing periodic house keeping on /var would keep it in a consistent state.

Login into HMC-CLI.

1) # monhmc -r {disk|proc|swap|mem} -n #

-r :  Resource
-n : Interval to repeat the status of the resources.

2) # chhmcfs -o f { -d days | -h hours| -s size} -f filesystem

-o : Operation to be performed, "f" refers to free the filesytem.

# chhmcfs -o f -d 3

The above command cleans up the log files from all the filesystem except the last 3 days -d 3.

# chhmc -o f /var

The above command cleans up all the log files in tehe /var filesystem.

3) # monhmc -r disk

Verify the filesystem size after performing the operation.

MultiBos - Operating System Backup

Multibos is one of the utilties in AIX to take a backup of the Operating System. Multibos is capable of creating multiple instance of the Operating System. Unlike cloning, it takes backup of the Operating System in the rootvg itself. All the filesystem are prefixed with "bos_"

Note: Login as a root user.

1) Ensure you have enough PP's in your rootvg and no stale PP's in the rootvg.

# lsvg rootvg

2) Initiate the multibos.

# multibos -sXp

-s :  Created an instance Standby BOS.
-X : Increase the size of the filesystem dynamically.
-p : Preview mode. Once preview is fine execute the same command without -p.

3) It would take 15 mins to complete.

4) Check the multibos standby BOS created by,

# lsvg -l rootvg

5) To mount all the standby BOS use the command,

# multibos -Xm

6) Operation on the multibos BOS can be done through multibos shell.

# multibos -S

7) Remove the standby BOS through,

# multibos -RXp

-p for preview operation. Once done with preview -p can be removed and executed.