zFS File Systems

• zSeries File System introduction
• Application programming interfaces
• zFS physical file system
• zFS colony address space
• zFS supports z/OS UNIX ACLs
• zFS file system aggregates
• Compatibility mode aggregates
• Multi-file system aggregates
• Metadata cache
• zFS file system clones
• Backup file system
• zFS log files
• zFS recovery
• zFS sample scenarios

Installing and using zFS

• Installing zFS
• Changes to zFS since the initial release
• Customization steps for the Distributed File Service
• Customization steps for zFS
• Customization utilities and commands
• Steps needed to define file systems
• zFS RACF definitions
• Authority for zFS commands
• UNIXPRIV class and BPX.SUPERUSER profile
• Access to the zFS configuration file
• BPXPRMxx definitions
• zFS colony address space
• zFS procedure
• Starting zFS
• Colony address space outside of JES control
• Allocating zFS aggregates
• zFS aggregate definitions
• Allocating an aggregate
• Multiple volume aggregates
• Managing space on volumes
• Formatting zFS aggregates
• Display quota information
• zFS configuration file
• Create a data set for IOEFSPRM
• Running zFS with IOEFSPRM in a flat file
• IOEFSPRM as a member of a PDS data set
• Logical parmlib search
• Dynamic configuration
• Attaching an aggregate
• Create zFS file systems
• Duplicate file system names
• zFS file system mounts
• Mounting zFS file systems
• Mounting user file systems
• Direct mount
• Automount for zFS file systems
• Dynamic creation of automounted zFS file systems
• Mixed-case multi-file filesystem names
• Mounting zFS file systems using the ISHELL
• zFS file systems in sysplex sharing
• Write protection implementation
• Mounting zFS file systems copied outside the sysplex
• Increasing the physical size of an aggregate
• Displaying dynamic aggregate and quota extensions
• Growing zFS aggregates in a loop
• zFS aggregates with a size greater than 4 GB
• Working with zFS aggregates using the ISHELL
• Creating zFS aggregates
• Support for managing zFS aggregates and file systems
• Accessing zFS files
• Access control lists (ACLs)
• Displaying aggregate information and stopping zFS
• Alternate sysplex root support
• Using the automatic replacement
• Displaying the alternate sysplex root
• Disabling the alternate sysplex root
• Command replacement
• Migration and coexistence considerations
• zFS abnormal termination
• Changing an aggregate mode
• zFS application programming interfaces
• Utility RXLSAGGR and RXZFSMON
• Salvager utility
• Concurrent log recovery
• IOEAGFMT and IOEAGSLV authorization
• zFS utility considerations
• Terminology
• zFS auditids
• zFS mount recovery
• Quiesced zFS aggregates
• UNIX System Services file system status information
• zFS monitoring aggregates
• zFS man pages support
• zFS support of EAV volumes
• JCL and REXX procedures to run zFS-related tasks

Migrating to zFS

• Creating zFS file systems
• Previous restriction for zFS aggregate names
• Using an archive file
• Using copytree to migrate an HFS file system to zFS
• Using pax in copy mode to migrate an HFS file system to zFS
• Moving the HFS root to zFS
• Creating a compatibility mode aggregate
• Copying the HFS root data into the zFS file system
• Using the chroot command to test the new zFS file system
• IPLing the system with the zFS file system as the root
• Switching from an HFS to a zFS version root without an IPL
• The impact of stopping zFS for other mounted file systems
• Automount facility for zFS
• Defining the automount multi-file system aggregate
• Automount assistance for HFS-to-zFS migration
• Migration and coexistence considerations
• Considerations for migrated data sets
• zFS file system considerations
• Migration tool BPXWH2Z
• Converting multiple file systems
• Alternate HFS-to-zFS migration tool
• MIGRTOOL functions and choices
• Replacing or migrating the sysplex root file system
• The sysplex root
• Backup file system
• Creating and using a file system clone
• Aggregate recovery
• Backingup aggregates
• Restoring the backup
• Using a clone for taking a backup
• Using IDCAMS REPRO
• Catalog indication for zFS aggregates
• Restrictions on quiescing zFS aggregates
• Using MOVEAGGR to back up UNIX System Services file systems
• UNQUIESCE modify command
• Using a started task to unquiesce zFS aggregates
• Abend handling and hang conditions
• Conditional asserts
• Recovery code for End of Memory failures
• zFS hangs

Sysplex Considerations

• zFS shared sysplex support
• Compatibility mode file systems
• Multiple file system aggregates
• Automount for compatibility mode file systems
• zFS remount considerations
• Remount processing in sysplex sharing
• zFS remount considerations
• Switching from R/O to R/W and back again to R/O
• LFS support for zFS
• Automove behavior
• Mounting zFS file systems R/O
• Effects on applications having zFS files open
• Small application opening files in a zFS file system
• Multi-file system aggregates behavior when zFS stops
• Stopping zFS
• Deny mount of multi-file system aggregate
• Sysplex awareness of the zfsadm command interface
• New zfsadm command functions
• The zFS sysplex group
• zFS file system sharing enhancements
• UNIX System Services file system sharing disadvantages for read-write file systems
• zFS sysplex-aware for R/W mounts
• Read-only mounted file systems (sysplex-aware)
• z/OS UNIX file system ownership versus zFS aggregate ownership

Performance and Tuning

• File system access
• IOEFSPRM parameter file
• User file cache
• Metadata cache
• Metadata cache monitoring
• Metadata cache storage
• Log file cache
• zFS log files
• Log file usage
• Directory cache and large directories
• Changing the default setting for the zFS dir_cache_size
• arge directories
• Performance monitoring APIs
• RMF support for zFS
• zFS cache monitoring
• RMF zFS Summary Report
• Report field descriptions
• RMF Detail reports
• I/O details report
• User and vnode cache detail reports
• Metadata and transaction cache detail reports
• RMF zFS Activity Report
• Field descriptions
• zFS user cache
• Automatic aggregate growing
• zFS sync interval
• Read ahead of user file data
• zFS directory and metadata cache
• HFS and zFS file system comparison