| Title: | DIGITAL UNIX (FORMERLY KNOWN AS DEC OSF/1) |
| Notice: | Welcome to the Digital UNIX Conference |
| Moderator: | SMURF::DENHAM |
| Created: | Thu Mar 16 1995 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 10068 |
| Total number of notes: | 35879 |
Hi,
I have a customer that runs a script to check for any files that
have changed on the system. They notice that /etc/dec_hw_db is
recreated or modified everytime they reboot the system.
They want to know what the /etc/dec*db files are used for.
I can not find any documentation on them, but have noticed that
they did not exist prior to V4.0.
Can someone please tell me what /etc/dec_devsw_db, /etc/dec_hw_db,
and /etc/dec_scsi_db do?
Thanks in advance for the help.
Debbie Trenta
Lucent/AT&T Platinum Support
Colorado CSC
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 9494.1 | For future use | WASTED::map | Mark Parenti, Unix Engineering Group | Tue Apr 15 1997 13:49 | 17 |
Those files are the beginnings of some new methods we are using for hardware
configuration and device naming. They will be used to maintain persistence
of hardware configurations and device names across boots. This is especially
important as we move toward more dynamic configuration of hardware subsystems.
Much of the kernel framework was implemented in V4.0, but issues with
other parts of the system (especially regarding reliance on rzxx naming)
prevented us from making the changes visible to the user. As a result,
the hardware subsystems use the databases to store information while
running, but recreate the databases at each boot. That is why your customer
is seeing that behavior. In Steel those databases will start to be used and
will not be recreated on each boot. For V4.x they are essentially temp files.
Mark Parenti
UEG
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