Gallium debugging and crash dumps

[Michael Jung]

On , Michael Jung wrote:
> Hi:
> 
> If there is a better list to post this to please let me know.
> 
> I've started playing with VT and gallium. I boot on ZFS but have a UFS 
> drive
> and swap partition.  Anyone with idea's why I'm not getting any crash 
> info?
> 
> I am guessing it is because the machine is not rebooting but locks up 
> hard so
> is there any extra debugging that can be turned on?
> 
> On the surface Gallium seems to be the root of the problem.
> 
> Here is my dump/swap config:
> 
> FreeBSD charon 10.0-STABLE FreeBSD 10.0-STABLE #0 r265914M: Wed May 14
> 15:44:17 EDT 2014     mikej at charon:/usr/obj/usr/src/sys/VT  amd64
> 
> root at charon:/usr/home/mikej # swapinfo
> Device          1K-blocks     Used    Avail Capacity
> /dev/ada2s1a     16777216        0 16777216     0%
> root at charon:/usr/home/mikej #
> 
> root at charon:/usr/home/mikej # dumpon  -l
> ada2s1a
> root at charon:/usr/home/mikej #
> 
> root at charon:/usr/home/mikej # grep dump /etc/rc.conf
> dumpdev="AUTO"            # Device to crashdump to (device name, AUTO, 
> or NO).
> dumpdir="/data/crash"    # Directory where crash dumps are to be stored
> root at charon:/usr/home/mikej #
> 
> root at charon:/usr/home/mikej # ls -lad /data/crash/
> drwxr-xr-x  2 root  wheel  512 Apr 20 13:15 /data/crash/
> root at charon:/usr/home/mikej #
> 
> http://216.26.158.189/Xorg.0.log
> 
> --mikej
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OK another crash today and the machine did reboot but still nothing in 
/data/crash


[mikej at charon ~]$ gpart list ada2
Geom name: ada2
modified: false
state: OK
fwheads: 16
fwsectors: 63
last: 3907029167
first: 63
entries: 4
scheme: MBR
Providers:
1. Name: ada2s1
    Mediasize: 2000398901760 (1.8T)
    Sectorsize: 512
    Stripesize: 0
    Stripeoffset: 32256
    Mode: r2w2e3
    rawtype: 165
    length: 2000398901760
    offset: 32256
    type: freebsd
    index: 1
    end: 3907029167
    start: 63
Consumers:
1. Name: ada2
    Mediasize: 2000398934016 (1.8T)
    Sectorsize: 512
    Mode: r2w2e5

[mikej at charon ~]$ ls /dev/ada2
ada2     ada2s1   ada2s1a  ada2s1b
[mikej at charon ~]$ ls /dev/ada2

I simply must just not understand something that is fundamental here.

If I get this right swap is a slice ada2s1b, not a partition which
should be fine for core dumps right?  On reboot dumps to swap are not
being wrote to /data/dump!

If UFS is dirty and auto-fsck runs - is this an issue?

I obviously don't get something. Please someone enlighten me ;-)

Regards,

--mikej
Michael Jung