VERITAS File System 4.1 (HP OnlineJFS/JFS) Release Notes (September 2005)

VERITAS File System 4.1 Release Notes
New Features
Chapter 110
NOTE To use the CDS feature, an extended VxFS license is required which
enables CDS.
• Multi-Volume Support (MVS)
The multi-volume support feature allows several volumes to be represented by a single
logical object. All I/O to and from an underlying logical volume is directed by way of
volume sets. This feature can be used only in conjunction with VERITAS Volume
Manager.
The following commands are associated with MVS:
fsapadm VxFS allocation policy administration utility.
fsvoladm VxFS device administration utility.
Table 1-1 lists the application programming interface (API) associated with MVS:
• Large File Systems and Large File Support
The VxFS 4.1 release is the first release to support Disk Layout Version 6. File system up
to 256TB in size can be created on Disk Layout Version 6. However, file system larger
than 2 TB can be created only on 64-bit kernel on VERITAS Volume Manager. A 32 TB file
system requires a 2 K block size, a 64 TB file system requires a 4 K block size, and a 128
TB or larger file system requires an 8 K block size. File systems over 32 terabytes are
called extra large file systems and require a license to create. However, only file system
upto 32TB has been qualified and will be supported as of this stage.Also, the OnlineJFS
license is required to create file systems over 2 TB and under 32TB. The EBFS license is
required to create file systems over 32TB.
Table 1-1 Functions in the MVS Application Programming Interface
vxfs_ap_assign_
ckpt
vxfs_ap_assig
n_file
vxfs_ap_assign_fs vxfs_ap_define
vxfs_ap_enforce
_file
vxfs_ap_enume
rate
vxfs_ap_remove vxfs_ap_query
vxfs_ap_query_c
kpt
vxfs_ap_query
_file
vxfs_ap_query_fs vxfs_vol_add
vxfs_vol_deenca
psulate
vxfs_vol_enca
psulate
vxfs_vol_enumerate vxfs_vol_remove
vxfs_vol_resize vxfs_vol_stat