Open System Services Management and Operations Guide (G06.30+, H06.08+, J06.03+)

DescriptionValue
Setting NFSPERMMAP to this value guarantees that users who have read permission in
the OSS ACL for an object on the NonStop system will be able to read the object on
NFS V2 clients. However, it also allows users on NFS V2 clients who do not have read
permission in the OSS ACL for an object on the NonStop server to be able to read data
from the object when the data is cached on NFS V2 clients.
The other and user fields of the permissions bits returned to NFS V2 clients are unmodified.
The group field of the permissions bits returned to NFS V2 clients are the permissions of
UNMODIFIED
the class entry of the ACL. This set of permissions bits matches the permissions that are
displayed on the NonStop server by a command such as the ls command.
Disables the mapping of OSS ACLs to NFS file permissions. When NFSPERMMAP is
disabled, NFS requests to objects protected by OSS ACLs that contain optional ACL
DISABLED
entries are denied. This behavior matches the behavior for systems running J06.08 and
earlier J-series RVUs, H06.19 and earlier H-series RVUs, and G-series RVUs. This is the
default value.
For more information about OSS NFS file-system security, see the Overview of NFS for Open
System Services and the Open System Services NFS Management and Operations Guide.
NFSPOOL kbytes
specifies the number of kilobytes that the OSS name server uses for buffers for nonretryable
Network File System (NFS) operations for the fileset.
Valid values are in the range 4 through 128 kilobytes.
If the NFSPOOL option is omitted, the number of kilobytes that the OSS name server uses for
buffers is not changed.
NFTIMEOUT seconds
specifies the number of seconds that the OSS name server retains the results of nonretryable
Network File System (NFS) operations for the fileset.
Valid values are in the range 60 through 300.
If the NFSTIMEOUT option is omitted, the timeout interval for the fileset is not changed.
NORMALIOMODE { UNBUFFEREDCP | DP2BUFFEREDCP | OSSBUFFEREDCP | DP2BUFFERED
| OSSBUFFERED }
specifies the input/output buffering and fault tolerance for application file opens that do not
use the O_SYNC option:
DescriptionValue
Use unbuffered input/output with checkpointing. This behavior provides maximum fault
tolerance but with reduced performance.
UNBUFFEREDCP
Use disk-process-buffered input/output with checkpointing. This behavior provides fault
tolerance for single failures, with better performance than UNBUFFEREDCP. DP2 buffers
DP2BUFFEREDCP
file data and checkpoints the file state to its backup process to ensure recovery from
single failures.
Use OSS-buffered input/output with checkpointing. This behavior provides fault tolerance
for single failures, with better performance than DP2BUFFEREDCP. OSS filesystem
OSSBUFFEREDCP
processes and DP2 share responsibility for buffering file data; OSS provides the buffering
whenever possible. DP2 checkpoints the file state to its backup process to ensure recovery
from single failures.
Use disk-process-buffered input/output without checkpointing. This behavior provides no
fault tolerance, but better performance than DPBUFFEREDCP.
DP2BUFFERED
Use OSS-buffered input/output without checkpointing. This behavior provides no fault
tolerance, but better performance than OSSBUFFEREDCP.
OSSBUFFERED
If NORMALIOMODE is not specified, the default behavior is OSSBUFFEREDCP.
274 Open System Services Monitor