Veritas File System 4.1 Release Notes HP-UX 11i Version 3 HP Part Number: 5900-0592 Published: March 2010 Edition: 2.
© Copyright 2010 Hewlett-Packard Development Company, L.P. Legal Notices Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation and Technical Data for Commercial Items are licensed to the U.S. Government under vendor’s standard commercial license. The information contained herein is subject to change without notice.
Table of Contents About this Document..........................................................................................................5 Intended Audience.................................................................................................................................5 Document Organization.........................................................................................................................5 Typographic Convention.....................................................
List of Tables 1 2 1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 4 Document Organization..................................................................................................................5 Publishing History..........................................................................................................................6 Additional Licenses.........................................................................................................................
About this Document This document provides information on Veritas File System (VxFS) 4.1 on HP-UX 11i Version 3. Intended Audience This document is intended for system administrators responsible for installing and configuring UNIX systems with the Veritas suite of products.
• • Veritas Volume Manager 4.1 Troubleshooting Guide Veritas Enterprise Administrator (VEA 500 Series) Getting Started Guide Publishing 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. See your HP sales representative for details.
1 Veritas File System 4.1 Release Notes This document provides information on Veritas File System 4.1 (VxFS 4.1) on HP-UX 11i Version 3. The following topics are discussed: • • • • • • • • • “Product Description” “New Features” “Limitations of VxFS 4.
• Intent Log Resize The VxFS intent log can be resized using the log option of the fsadm command. The fsadm command supports online administration functions on VxFS file systems, Storage Checkpoints and individual files and directories. You can use the fsadm command for file-system resizing, extent reorganization, directory reorganization, and querying or changing the largefiles flag. Changing the intent log size can improve system performance. The maximum intent log size is now 2 gigabytes.
Table 1-1 Additional Licenses VxFS Feature License Key File Change Log File Change Log Cross-Platform Data Sharing Cross-Platform Data Sharing Extra Large File Systems Extra-Big File Systems Multi-Volume File Systems Multi-Volume Support Quality of Storage Service (QoSS) Quality of Storage Service Storage Checkpoints VXCKPT Quick I/O for Databases VXFDD Cluster File System VXCFS Product keys are available on the License Key certificate.
• • • Named Data Streams Removable Storage Checkpoint Creation Mode Cluster File Systems The details of the features are described below: • Cross-Platform Data Sharing Cross-platform data sharing (CDS) feature allows serial data sharing among heterogeneous systems that directly access the physical data storage devices. However, this feature can be used only with Veritas Volume Manager. See “Product Licensing (Currently not available)”for more information on licensing support for this feature.
Table 1-3 Application Programming Interfaces (API) for MVS (continued) • MVS API Description vxfs_vol_add() Adds the volume specified by volname to a multi-volume file system as free space. vxfs_vol_deencapsulate() Removes the volume specified by the argument volname to the file system, making the existing data in the volume available in the file fname.
• Storage Checkpoint File System Restore Storage Checkpoints can be used for backing up and restoring individual files, applications or an entire file system. Restoring from Storage Checkpoints can recover data from incorrectly modified files, but cannot be used to recover data lost due to hardware damage or other file system integrity problems. File system restoration can be done using the fsckpt_restore (1M) administrative command.
• Removable Storage Checkpoint Creation Mode The default Storage Checkpoint creation mode is now removable. • New tunable parameters Two new tunable parameters, inode_aging_count and inode_aging_size, for use with the Storage Checkpoint API, were added to the vxtunefs command. The vxtunefs command sets or prints tuneable I/O parameters of mounted file systems. See the vxtunefs (1M) for more information. End of Product Support VxFS 4.
The vx_hsm_get_dirattr() reads a directory entry 8 KB at a time. If the user buffer is not large enough to hold the combined entries of the corresponding file statistics information (up to ~114kb), the next call to vx_hsm_get_dirattr () will continue from the wrong offset within the directory, resulting in some directory entries being skipped. No error is displayed and the processing continues from the last directory entry information that can be fitted into the user buffer.
• Some Disk Quota Operations Do Not Function on NFS Problem When VxFS file systems are exported via NFS, quotas on the file system apply to users when accessing the file system from NFS clients. However, the HP-UX quota commands on the NFS client cannot be used to edit quotas. Workaround The VxFS quota commands can be used only on the server to edit quotas. • Large Directories May Degrade Performance Problem Creating more that 100,00 files in the same directory degrades VxFS performance.
• Improper Display of Some fields by the fstyp Command Problem 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 sometimes display zero values. Workaround See mkfs_vxfs (1M) and mkfs (1M) for workaround.
cache size specified in the global (dynamic) tunable, vxfs_bc_bufhwm. If and when the value of vxfs_bc_bufwhm is set to default (zero), VxFS automatically tuned the maximum size of the metadata buffer cache based on the memory configuration on the system. On systems with a RAM size of 1.5 GB or less, you can manually tune down the value of vxfs_bc_bufhwm to a minimum of 6144 (6MB).
