Setting up JFS log isolation - assure_mimix - 6.0

When selecting logical volumes with jfs or jfs2 file systems that have associated outline logs, ensure that the outline logs are also protected by Assure MIMIX for AIX. Do not select outline logs unless you select the corresponding file system for protection.

The Add Logical Volumes dialog, (invoked from the Logical Volumes panel of the New or Change Replication Group Configuration Wizard), checks to ensure that unprotected file systems do not use the same jfs or jfs2 outline logs that a protected file system uses.

For example, if there are 4 jfs2 logical volumes /lvfs1, /lvfs2, /lvfs3, /lvfs4 that use the same jfs2log /dev/fsloglv00, and Assure MIMIX for AIX only protects /lvfs1, you need to have separate jfs2logs for the protected and unprotected logical volumes.

To maintain jfslog2 isolation:

1. Unmount the file system that you will assign to the new jfslog.

   umount /fs1

2. Create a new logical volume with a type of jfslog.

   mklv -t jfs2log -y <newjfslog> <vgname> 1  ; where <newjfslog> is the name of the new jfslog and <vgname> is the volume group where the jfslog is created

3. Format the new jfslog.

   logform /dev/<newjfslog>

4. Respond yes to allow the jfslog to be formatted.

5. Assign the new jfslog to the file system.

chfs -a log=/dev/<newjfslog> /fs1