These release notes support ptx/EFS V1.4.2. ptx/EFS lets you create large files and filesystems of up to 1 TB in length for the DYNIX/ptx® operating system. In conjunction with ptx/CFS, ptx/EFS lets you create large files and filesystems in a cluster environment.
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 Guide.
Use this version of ptx/EFS with the following products:
IBMTM NUMA-Q® 2000 systems or Symmetry® systems
DYNIX/ptx V4.5.2 or later
ptx/CLUSTERS V2.2.1 or later (optional)
ptx/SVM V2.2.1 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.sequent.com/:
ptx/EFS and ptx/CFS Administration Guide
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 fixes for the following software defects:
(244528) EFS needed an automated mechanism to schedule a reorganization when required.
(252620) The diskio program crashed the system when an AIO structure was NULL.
(252959) The mkfs command dumped core because the function fill_ilist NULL was passed to the iinit() function.
(253894) The system panicked with an MMU fault.
This release of ptx/EFS contains no known open problem reports.