Compaq VAX 7000 Przewodnik Instalacji Pobierz pdf (Strona 36)

14 Known Features, Restrictions and Problems

14.1 Console issues

These are some of the known console issues which might touch an MCS engineer. There are

others, so always read the release notes for the version of console you are dealing with.

14.1.1 BOOTDEF_DEV restrictions

VAX7000/10000 V1.2 console hangs during boot if string for BOOTDEF_DEV is greater

than 96 characters. V2.4 supported up to 127 (thus allowing 6 devices to be speciﬁed),

other environmental variables were limited to 31 characters. With V3.* we are back to only

4 devices being allowed in BOOTDEF_DEV string. If >>> set bootdef_dev ... command

exceeds one line don’t include carriage return, just overtype.

14.1.2 DEC7000 console cannot ﬁnd an OSF/1 dump partition

This problem occurs when OSF/1 is conﬁgured to place the dump partition on a disk drive

other than the system disk. OSF/1 uses the console’s device driver to write the dump, but

the console only knows about the boot device. Thus OSF/1 displays "can’t open dump device",

and the dump is lost.

The following work-around gets the console to conﬁgure a path to the disk containing the

dump partition before it boots OSF/1 from the system disk. It applies to versions V2.5 thru’

V4.1. This example powerup script conﬁgures all disks on KZMSA1.

>>> set mode advance

>>> set eeprom script powerup

Script> set mode advance

Script> kn7aa_pwrup

Script> conﬁg kzmsa1

Script> set mode basic

Script> ^z

>>>

A permanent ﬁx is planned for a future console release.

14.1.3 DEC 7000 consoles and ">>> set host ..." command

Certain versions of DEC 7000 console have trouble with this command:

From V3.0 to V3.2 ">>> set host -dup ..." does not work. (Not sure about earlier consoles).

The ">>> cdp ..." command has to be used to conﬁgure DSSI disks.

At V3.2 ">>> set host ..." does not work. (V3.0 and V3.1 are OK). This means devices like

CIXCDs and DEMNAs cannot be tested using RBDs. The only way to test a CIXCD in

loopback mode is with the RBDs so you may have to downgrade the console for this.

Both these problems are ﬁxed at console version V4.0.

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Compaq VAX 7000 Przewodnik Instalacji Strona 36