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

VERITAS File System 4.1 Release Notes
New Features
Chapter 1 11
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.
An online conversion utility vxupgrade is provided to upgrade existing disk layouts to
Disk Layout Version 6 on mounted file systems.
NOTE In this release of VxFS, file sizes can grow only up to 2 TB.
LVM, also supports creation of VxFS file system, of size, less than or equal
to 2TB.
• Quality of Storage Service (QoSS)
The Quality of Storage Service (QoSS) feature allows mapping of more than one device to
a single file system.The QoSS feature is built on the multi-volume support technology
introduced in this release.Using QoSS, policies can be configured, that automatically
relocate files from one device to another,or files can be relocated using relocation
commands. Having multiple devices improves performance for applications that access
specific types of files. QoSS is managed using the VERITAS Enterprise Administrator
(VEA) GUI, or the fssweep, fsmove and fsrpadm commands. QoSS functionality is a
separately licensable feature that is available with the VRTSfspro package.
The following commands are associated with QoSS:
fsmove Relocates files to a destination component volume.
fssweep Traverses the directory structure of one or more file systems.
fsrpadm Administer relocation policies.
NOTE To use the QoSS feature, a separate license key is required.
• Storage Checkpoint Quotas
Usage limits can be set on Storage Checkpoints. The following keywords were added to
the fsckptadm command to administer Storage Checkpoints quota functionality:
getquotalimit Displays current quota limits, current usage, and flags set.
setquotalimit Sets the hard limit and soft limits for Storage Checkpoint quotas.
quotaon and
quotaoff Turns Storage Checkpoint quotas on and off.