gmirror / crash dumps
Adam Vande More
amvandemore at gmail.com
Fri Jul 31 06:15:02 UTC 2009
On Thu, Jul 30, 2009 at 11:23 PM, Philip M. Gollucci
<pgollucci at p6m7g8.com>wrote:
> Hi,
>
> Say I've got the following:
> /dev/mirror/gm0s1b none swap sw
>
> /dev/mirror/gm0s1a 989M 390M 520M 43% /
> /dev/mirror/gm0s1g 15G 1.7G 12G 13% /usr
> /dev/mirror/gm0s1h 544G 1.8M 501G 0% /usr/home
> /dev/mirror/gm0s1d 1.9G 500M 1.3G 27% /usr/src
> /dev/mirror/gm0s1e 1.9G 1.1G 733M 60% /usr/obj
> /dev/mirror/gm0s1f 97G 2.0K 89G 0% /var
>
> Well I'm trying to get my kernel panics to cause dumps
> 1) /etc/rc.conf
> dumpdev=AUTO
> crashinfo_enable="YES"
>
> 2) sudo chmod 700 /var/crash
>
> 3) 8GB RAM, 16GB of swap, /var/crash is 16GB < 97GB
>
> 4) I have the following in my 7-stable kernel
> makeoptions DEBUG=-g
> options AUDIT
> options KTRACE
> options KDB
> options KDB_TRACE
> options DDB
> options GDB
> options BREAK_TO_DEBUGGER
> options INVARIANTS
> options INVARIANT_SUPPORT
> options WITNESS
> options DEBUG_LOCKS
> options DEBUG_VFS_LOCKS
> options LOCK_PROFILING
> options DIAGNOSTIC
>
> The long and the short of it is I don't get any dumps.
>
> I read somewhere that you can't dump onto a gmirror device.
That is incorrect, but I don't know the cause of your problem. I run
nothing but gmirror and dumps happen here.
> So I've moved /var off of
> /dev/mirror/gm0s1f 97G 2.0K 89G 0% /var
> and I can now do what I want with this.
>
> How do I go about re-jiggering this (2-disk gmirror) so I can use 1
> slice from one of them as my dumpon(8) device?
>
> TIA
>
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--
Adam Vande More
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