VERITAS File System 4.1 (HP OnlineJFS/JFS 4.1) Release Notes HP-UX 11i v2 Sixth Edition Manufacturing Part Number: 5991-2762 December 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.
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Table 1 Typeface Typographic Conventions (Continued) Usage Examples [ ] In command synopsis, brackets indicates an optional argument. ls [ -a ] | In command synopsis, a vertical bar separates mutually exclusive arguments. mount [ suid | nosuid ] blue text An active hypertext link In PDF and HTML files, click on links to move to the specified location. Related Documentation For more information about VERITAS 4.
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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 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.
VERITAS File System 4.1 Release Notes New Features • Storage Checkpoint File System Restore Storage Checkpoints can be used by backup and restore applications to restore either individual files or an entire file system. Restoring from Storage Checkpoints can recover data from incorrectly modified files, but typically cannot be used to recover from hardware damage or other file system integrity problems. File system restoration can be done using the fsckpt_restore(1M) administrative command.
VERITAS File System 4.1 Release Notes New Features vxlsino VxFS reverse path name lookup utility. The reverse path name lookup feature includes the following application programming interface (API) functions: vxfs_inotopath vxfs_inotopath_gen • Returns path names for a given inode number. 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.
VERITAS File System 4.1 Release Notes End of Product Support — The delaylog option is now the default intent logging mount option. The change of the default mount option from log to delaylog does not increase the risk of data loss, but allows Base-VxFS to cache data to improve performance. For more information on the delaylog option refer to VERITAS File System 4.1 Administrator's Guide. — The default Storage Checkpoint creation mode is now removable.
VERITAS File System 4.1 Release Notes Unsupported Features This is the last release to support shared (cluster) mounts on VxFS Disk Layout Version 5 cluster file systems. Upgrade all current cluster file system disk layouts to Disk Layout Version 6 to enable new VERITAS File System features and to support upgrades in future releases.
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 a 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.
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 Base-VXFS Software Issues in Base-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.
VERITAS File System 4.1 Release Notes Software Issues in Base-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 Base-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 Base-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 Base-VXFS system has 512 MB of memory, VxFS will require up to 52 MB to store the VxFS inode cache. Therefore it is necessary to tune the tunables according to the type of load on the system. • Tuning Down the Inode Cache 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.
VERITAS File System 4.1 Release Notes Software Issues in Base-VXFS File system with 8 million inodes can be created only using the largefiles option of mkfs command (the fsadm utility can also be used to set the largefiles flag on the file system). See the mkfs_vxfs(1M) and fsadm_vxfs(1M) manpages for details. • Some Fields Not Displayed by the fstyp Command The fstyp -v command displays super-block information.
VERITAS File System 4.1 Release Notes Product Licensing The newfs -R command will reserve swap space greater than is available on the underlying device. 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.
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.
