VERITAS File System 4.1 (HP OnlineJFS/JFS 4.1) Release Notes HP-UX 11i v2 Fifth Edition Manufacturing Part Number: 5991-1832 September 2005 Printed in the United States © Copyright 2005 Hewlett-Packard Development Company L.P.
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Contents Preface 1. VERITAS File System 4.1 Release Notes New Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 End of Product Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Unsupported Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Compatibility With Previous Versions of VxFS . . . . . . . . . . . .
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Preface The VERITAS File System 4.1 (HP OnlineJFS/JFS 4.1) Release Notes provides information on the September 2005 release of VERITAS File System 4.1. Publication History The manual publication date and part number indicate its current edition. The publication date will change when a new edition is released. The manual part number will change when extensive changes are made. To ensure that you receive the new editions, you should subscribe to the appropriate product support service.
• http://welcome.hp.com/country/us/en/support.html Typographic Conventions Table 1 describes the typographic conventions used in this document. Table 1 Typographic Conventions Typeface Usage Examples Computer output, files, directories, software elements such as command options, function names, and parameters Read tunables from the /etc/vx/tunefstab file. italic New terms, book titles, emphasis, variables replaced with a name or value See the VERITAS File System 4.1 Release Notesfor details.
• VERITAS File System 4.1 Release Notes • VERITAS File System 4.1 Administrator’s Guide • VERITAS Volume Manager 4.1 Hardware Notes • VERITAS Volume Manager 4.1 Release Notes • VERITAS Volume Manager 4.1 Troubleshooting Guide • VERITAS Volume Manager 4.1 Migration Guide • VERITAS Volume Manager 4.1 Administrator’s Guide • VERITAS Enterprise Administrator (VEA 500 Series) Getting Started • VERITAS Storage Foundation 4.
VERITAS File System 4.1 Release Notes New Features 1 VERITAS File System 4.1 Release Notes This document provides information on VERITAS File System (HP OnlineJFS/JFS) Release 4.1. The VERITAS File System (HP OnlineJFS/JFS) 4.1 is supported on HP-UX 11i v2 September 2004 or later.
VERITAS File System 4.1 Release Notes New Features 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.
VERITAS File System 4.1 Release Notes New Features 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. 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.
VERITAS File System 4.1 Release Notes New Features There is one new command associated with this feature: fsckpt_restore VXFS Storage Checkpoint file system restoration utility. • File Change Log The VxFS File Change Log (FCL) tracks changes to files and directories in a file system.
VERITAS File System 4.1 Release Notes New Features vxfs_inotopath_gen • Returns path names for a given inode number with a specific generation count. Intent Log Resize The VxFS intent log can be resized using the log option of the fsadm command. Dynamically changing the intent log size can improve system performance. The maximum intent log size is now 2 gigabytes.
VERITAS File System 4.1 Release Notes End of Product Support — Operation of the intent log replay was improved to increase the speed of recovery after a file system failure. — The histlog function was implemented in the fsdb_vxfs command. The history log records structural changes to the file system to aid in product support. — Two new tunable parameters, inode_aging_count and inode_aging_size, for use with the Storage Checkpoint API, were added to the vxtunefs command.
VERITAS File System 4.1 Release Notes Unsupported Features Unsupported Features The following features are not supported in this release: • VERITAS Quick I/O for Databases • VERITAS QuickLog • VERITAS FlashSnap • Storage Checkpoints • Cluster File Systems • Moving VERITAS Volume Manager Volumes or VERITAS File Systems from HP-UX 11i Version 1 to HP-UX 11i Version 2 systems has not yet been tested and is not supported.
VERITAS File System 4.1 Release Notes Compatibility With Previous Versions of VxFS Compatibility With Previous Versions of VxFS VxFS 4.1 file systems employ Disk Layout Version 6. With the VxFS 4.1 release, you can no longer create or mount Disk Layout Version 3 file systems. VxFS 4.1 is the last major release to support Disk Layout Version 4 and Disk Layout Version 5. HP recommends upgrading any previously installed VxFS file system to the Disk Layout Version 6 available with VxFS 4.1.
VERITAS File System 4.1 Release Notes Documentation WARNING System Administration Manager (SAM) does not recognize VxFS 4.1 file system with Disk Layout Version 6. Documentation The VERITAS File System 4.1 Administrator’s Guide and the VERITAS File System 4.1 Release Notes are available under the /usr/share/docs directory. These documents are provided as PDF files. To view or print PDF documents, you need the Adobe Acrobat Reader. Online Manual Pages Table 1-2 lists the VERITAS File System 4.1 manpages.
VERITAS File System 4.1 Release Notes Command Summary Table 1-2 VERITAS File System 4.1 Manpages (Continued) ncheck_vxfs Generates path names from inode numbers for a VxFS file system. vxdump Incremental file system dump. vxfsconvert Converts an unmounted file system to VxFS or upgrades a VxFS disk layout version. vxfsstat Displays file system statistics. vxrestore Restores a file system incrementally. vxtunefs Tunes a VxFS file system.
VERITAS File System 4.1 Release Notes Command Summary Table 1-3 VERITAS File System 4.1 Commands (Continued) Command Description ff Lists file names and inode information for a VxFS file system. fsadm Resize or defragment a VxFS file system. fscat Cats a VxFS file system. fsck Checks and repairs a VxFS file system. fsdb VxFS file system debugger. fstyp Returns the type of file system on a specified disk partition. getext Gets extent attributes for a VxFS file system.
VERITAS File System 4.1 Release Notes Software Issues in VxFS Software Issues in VxFS • Large File Support VxFS 4.1 only supports files up to 2 TB on 64-bit kernels. • Mapping a Large Offset of a File Calling the mmap(2) function on a large offset of a file might require a large amount of swap space. If mmap(2) is called on a 1 TB offset in MAP_SHARED mode, then approximately 256 MB of virtual memory pages could be instantiated. This means that VM requires space to hold 256 MB of data structures.
VERITAS File System 4.1 Release Notes Software Issues in VxFS xargs: Input file is corrupt. : Incorrect byte order Files should be created with the same locale encoding as the file system on which they reside. • Large Files Should Be Mounted Only on Systems With Sufficient Memory When a file system is mounted, VxFS keeps certain data structures in the kernel. As the size of the file system increases, the amount of data structures stored by VxFS also increases.
VERITAS File System 4.1 Release Notes Software Issues in VxFS While performing a full fsck, the system keeps certain data structures in the core for validating the space usage and inode usage. The space needed depends on the number of inodes and the number of blocks in the file system. The fsck command needs approximately 16 MB per 1 TB for an 8K block size file system (128 MB per 1 TB for a 1K block size file system) and 32 MB per million inodes.
VERITAS File System 4.1 Release Notes Software Issues in VxFS If you try to convert a sparse file to a Quick I/O file, the Oracle instance can fail if Oracle tries to write into an unallocated block. Specifically, datafiles used by the Oracle8i and Oracle9i temporary tablespace may be sparse files, so do not convert these to Quick I/O files. See the VERITAS Storage Foundation 4.1 for Oracle Database Administrator’s Guide for more information.
VERITAS File System 4.1 Release Notes Software Issues in VxFS VxFS file systems allocate and release inodes based on the file system load. Generally, larger inode caches help the file systems to perform better in case of a file server or web server load. The global tunable, vx_ninode, determines the maximum possible size of the Base-VXFS inode cache.
VERITAS File System 4.1 Release Notes Software Issues in VxFS The fstyp -v command displays super-block information. For Disk Layout Version 4 and Disk Layout Version 5 fields such as nau, logstart or logend display zeros. For more information refer to the mkfs_vxfs (1M) and mkfs (1M) manpages. • A Change in the Method of Computing CUT Values Cause Misleading Error Messages to Display.
VERITAS File System 4.1 Release Notes Product Licensing Product Licensing Product keys are available on the License Key certificate. The certificate also includes the number of product licenses purchased. A single key enables product installation on the number and the type of systems for which you purchased the license. A key may enable the operation of more products than specified on the certificate, but you are legally limited to the number of product licenses purchased.
VERITAS File System 4.1 Release Notes Product Licensing Licensed Features The following is a list of VERITAS File System features that require a license in addition to a VxFS license. These extended VxFS features are licensed only with VERITAS Storage Foundation products and are not available individually. See “Technical Support” on page 5 for contact information.
