[OpenIndiana-discuss] get no system dumps: skipping system dump - no dump device configured

[Udo Grabowski (IMK)]

On 11/08/2017 12:03, Carsten Grzemba wrote:
> I try to investigate boot hangs with latest hipster. Unfortunately "send break" is not possible on X4200 and dump after NMI is not working, however dumpadm shows:
>
> $ sudo dumpadm
> Password:
>  Dump content: all pages
>  Dump device: /dev/zvol/dsk/rpool/dump (dedicated)
> Savecore directory: /var/crash/gnom
>  Savecore enabled: yes
>  Save compressed: on
>
> and:
> $ zfs list rpool/dump
> NAME USED AVAIL REFER MOUNTPOINT
> rpool/dump 8.00G 310G 8.00G -
>
>
> Any ideas why system after NMI means dump devices is not configured
>

You need to set this in /etc/system and reboot:

* disable multithread dump (hangs)
set dump_plat_mincpu=0
set dump_bzip2_level=1
* enable panic on NMI
set pcplusmp:apic_panic_on_nmi=1

-- 
Dr.Udo Grabowski   Inst.f.Meteorology & Climate Research IMK-ASF-SAT
http://www.imk-asf.kit.edu/english/sat.php
KIT - Karlsruhe Institute of Technology           http://www.kit.edu
Postfach 3640,76021 Karlsruhe,Germany T:(+49)721 608-26026 F:-926026