HP-UX Reference (11i v2 07/12) - 1M System Administration Commands A-M (vol 3)

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crashconf(1M) crashconf(1M)

-t When used with the -i,

-e or -c options, sets the dump tunables alwaysdump, dontdump and

dump_compress_on respectively, to make the changes persistent across system reboots.

-v Displays the current crash dump conﬁguration. This is the default option if no arguments are

speciﬁed. If any changes to the current conﬁguration are speciﬁed on the same command line as

-v,

the conﬁguration will be displayed after the requested changes are made.

RETURN VALUE

Upon exit,

crashconf returns the following values:

0 Success.

1 The requested conﬁguration changes could not be made.

WARNINGS

On systems running VxVM 3.5, the swap volumes to be conﬁgured for system crash dumps should be

created with the usage type as swap

during the creation of the swap volume. Not doing so will cause

dump corruption. You could use the

-U option of vxassist(1M) to do the same.

The output of

crashconf is not designed to be parsed by applications or scripts, but only to be read by

humans. The output format may change without notice. Applications which require crash dump

conﬁguration information should retrieve that information using pstat(2).

Dump devices created by lvcreate(1M) must be contiguous (-Cy option) with bad block relocation turned off

(-rn option).

High Availability for HP’s A-A Dump Devices

The product, DUMPAAEnable Ver B.11.23.0609.01, enables high-availability features for HP’s Active-Active

(A-A) Disk Array devices when conﬁgured as dump devices.

The product Securepath version A.3.0F.02F.00F or higher is also required to be installed along with this

product on the system, for enabling these features.

This product provides the following features for HP’s A-A devices

1. Active path conﬁguration: An Active-Active device can be conﬁgured as a dump device through any of

the paths to the device. If the path through which dump conﬁguration is being attempted is currently

ofﬂine, then an alternate active path will be used for conﬁguration. Use

-l to display the actual path

used for conﬁguration. If all the paths to the device are ofﬂine, then conﬁguration will fail.

2. Failover/Path change: If the path that was used for dump conﬁguration of an Active-Active device goes

ofﬂine, then an alternate active path will be automatically conﬁgured for dump. Use

-l to display the

actual path used for dump.

3. Duplicate device identiﬁcation: An Active-Active device will have multiple device special ﬁles

(

/dev/dsk/c#t#d# ﬁles), one corresponding to each path to that device. Conﬁguration of an exist-

ing Active-Active dump device through an alternate device special ﬁle (

c#t#d#) is considered as a

duplicate device and conﬁguration will not be allowed.

A-A Dump Option

crashconf recognizes the following new options :

-l Displays the current crash dump conﬁguration similar to -v. The -l option displays actual path

(the path used for dump conﬁguration) in addition to user conﬁgured path (the path speciﬁed by

the user) for A-A dump devices. The actual path is displayed in brackets right below the user

conﬁgured path, if the actual path is different from the user conﬁgured path. The paths are

displayed using the corresponding device special ﬁles (c#t#d#). If there are no paths available

to a dump device it is shown as OFFLINE.

Actual path information will be shown only for A-A dump devices that are full devices.

AUTHOR

crashconf was developed by HP.