In addition, using the bpxwmigf command to migrate HFS file systems to zFS, superuser authority is required, providing at least READ access to. In our environment, we installed UA94777 which IFREQs UA94687. With this PTF, customers can use the Non-disruptive HFS to zFS migration facility in production environments.
#Hfs file system overview install
To use the HFS to zFS migration facility, you need to install PTF UA94777. wait minutes: The migration command does not end until the specified number of minutes has elapsed or when the migration completes.trename | -notrename: Specifies whether to rename the target zFS file system.targetfs targetfs: The name of the target zFS file system.noswap: Maintains the file system in synchronization but the file system is not swapped until a request with -swap is made.swap: Performs the swap as soon as the file system are synchronized.status minutes: The migration status displays the specified number of minutes during the wait.srename newname | -norename: Specifies whether to rename the source HFS file system to newname.
sourcefs: the name of the HFS file system to be migrated.priority priority: Specifies the migration priority 1 – 9 where 1 is the highest priority and 9 is the lowest.noparm: clears a previous mount request with -parm.parm: the mount parameter for the zFS file system after the migration is completed.asis – the file system is mounted as is.ro – the zFS file system is mounted read-only.rw – the zFS file system is mounted read/write.mode rw|ro|asis: The final mount mode for the target zFS file system.The syntax of the command is shown here:īpxwmigf -query īpxwmigf -source sourcefs In V2R3, USS provides a bpxwmigf command to migrate almost any in-use HFS file system to zFS.
Our customers are now telling us that it is not sufficient and planned outages for applications are not acceptable. We addressed that a few releases ago with the capability to migrate the sysplex root while in use. One inhibitor for customers was taking an outage on the sysplex root file system. In fact, we have been trying to migrate customers from the HFS file systems to zFS file systems for several years. This makes it nearly impossible to move data from an HFS to a zFS file system since that would require an outage of the file system, such as stop of user activity, copy of data to zFS, unmount HFS, mount new zFS etc… IBM System Z customers are running 24 x 7 which means that file systems might always be mounted and active.