Siemens Unix V4.0 User Manual
Page 289
Advanced Server Registry
Advanced Server Key Descriptions
Product Manual
U7613-J-Z815-6-76
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UseOplocks REG_DWORD
0 or 1
Specifies whether Advanced Server grants opportunistic locks to clients who request
them on opens.
Default: 1 (use opportunistic locks)
UseUnixLocks REG_DWORD
0 - 2
Determines how the Advanced Server for UNIX maps file and record locks to the UNIX
file system.
Default: 0
If mandatory locking is used (i.e. the bit for mandatory locking is set in the
UnixFilePerms parameter, e.g. to the default
rw-rwlr--
) in order to synchronize
non-network enabled client applications with UNIX applications, the setting "2"
prevents the server processes from hanging in the read() and/or write() system
calls and thereby blocking other clients that operate on the same server
process. Instead, the read/write client receives an appropriate error message.
The value of this key can be changed using AS/U Administrator, but only to the value 0
or 1.
VolumeLabel REG_DWORD
0 or 1
Shows volume lable of physical volume. Especially useful for sharing CD-ROMs.
Default: 0 (show default label)
This functionality is not supported with the current version of AS/X V4.0.
WriteBehind REG_DWORD
0 or 1
Specifies whether physical UNIX system writes are performed before or after the server
responds to the client. If UNIX system writes are performed before the server responds
to the client, then the server appears to be slower (because the response is delayed),
but the server can report disk full errors to clients. If UNIX system writes are performed
after the response is sent, disk full errors during write SMBs are not reported to the
client.
Default: 1 (enable write behind)
0 : record locks created by clients are not executed in the UNIX file system
1 : record locks created by clients are also executed in the UNIX file system
2 : record locks created by clients are also executed in the UNIX file system and, in
addition, files are opened in non-blocking mode
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