These release notes support ptx/EFS V1.5.1. ptx/EFS lets you create large files and filesystems of up to 1 TB in length for the DYNIX/ptx® operating system. ptx/EFS lets your filesystem have fast reboot and recovery times, online maintenance operations, and full UNIX File System (UFS) compatibility.
Read this document before you install or run this release of ptx/EFS. For information on large-filesystem support, refer to the DYNIX®/ptx Programming Tools Guide. For more information on ptx/EFS, refer to the ptx/EFS and ptx/CFS Administration.
Use this version of ptx/EFS with the following products:
IBM® NUMA systems
DYNIX/ptx V4.6.1 or later
ptx/CLUSTERS V2.3.1 or later (optional)
ptx/SVM V2.3.1 or later (optional)
The software installation procedure is documented in the DYNIX/ptx and Layered Products Software Installation Release Notes.
If you install ptx/EFS for the root filesystem, create a custom miniroot using the buildmini command. Refer to the buildmini(1M) man page for more information.
Although ptx/EFS supports 1-KB and 2-KB filesystems, performance is better with 4-KB filesystems. In order for an mmap file to be handled correctly, all but the last extent of the file must be a multiple of 4-KB bytes. For 1-KB and 2-KB filesystems, ptx/EFS reallocates extents to be multiples of 4-KB bytes as needed, but performance is slower.
The following documentation is available on the online documentation CD and at http://webdocs.numaq.ibm.com/:
This section lists the following problem report summaries:
The numbers in parentheses identify the problems in the problem-tracking system.
This release of ptx/EFS includes a fix for the following software defect:
ptx/EFS V1.5.0 includes fixes for the following software defects:
(250146) A CPU stall occurred in vx_iget.
(244528) EFS needed an automated mechanism to schedule a reorganization when required.
(241863) EFS statically declared dqlock_t should use sqlock_alloc.
This release of ptx/EFS has no known open problems.