Date: Wed, 20 Oct 1999 21:02:07 +0100 From: Adam Nealis <adamn@csl.com> To: Greg Lehey <grog@lemis.com> Cc: freebsd-questions <freebsd-questions@FreeBSD.ORG> Subject: Re: vinum - How long does it take to perform operation X? Message-ID: <380E1FBF.A7A720A8@csl.com> References: <38075030.7F681CE8@csl.com> <19991017123346.46381@mojave.lemis.com> <380CAEAA.AE9201E1@csl.com> <19991019114151.42479@mojave.worldwide.lemis.com>
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Greg Lehey wrote:
>
> On Tuesday, 19 October 1999 at 18:47:22 +0100, Adam Nealis wrote:
> > Greg Lehey wrote:
> >>
> >> On Friday, 15 October 1999 at 17:02:56 +0100, Adam Nealis wrote:
> >>> I don't mount them on boot either, as I quickly discovered vinum
> >>> dumps core if you try to operate on mount devices.
> >>
> >> If you get any kind of dump from Vinum, I want to know about it.
> > Would you like me to send you the next vinum.core I get?
>
> Is this a dump from vinum(8)? That would be new. I certainly don't
> want you to send me a 200 MB panic dump.
It'd be worse than that - the box has 512MB RAM ;).
It was a vinum dump, However, I discovered what my missing
ingredient was. Namely, I hadn't used disklabel to change
the type of partition 'e' to 'vinum' from 4.2BSD.
Suddenly GOTCHA number 6 in man 8 vinum makes a lot of sense.
I compiled and installed a debug kernel, caused a panic, and
followed your instructions for analysing a crash dump. I got
some joy, but not what I expected from your vinum (4) page.
As you were interested in the core dump I'll send it to you
separately, rather than hit the list, along with my gdb
session o/p and a ps laxw of the system during a
vinum stop
hang.
I'll keep my /var/crash/{kernel,vmcore}.0 files around in
case you can see an obvious (to you) mistake in your vinum
.gdbinit files.
Thanks so far...
Adam.
>
> > I didn't mention I was finding it very easy to get panics, and
> > once I got a complete lock up! Meaning I had to power cycle the
> > box to reboot it.
>
> OK, but that's what I want to know about.
>
> > I wouldn't be surprised if I'm doing something(s) wrong, but is it
> > really this easy to hang a box using vinum?
>
> It shouldn't be. But if nobody who runs into a problem tells me about
> it, I can't fix it.
>
> >>> I decided to clear out any cruft with
> >>>
> >>> bash 2.03# vinum resetconfig
> >>>
> >>> Enter Text -> NO FUTURE
> >>>
> >>> and it's been over an hour and the command doesn't seem to have
> >>> completed.
> >>
> >> That should be just about instantaneous.
> >
> > When I ^C'd that one I got a message saying that the operation had
> > completed. I may have tried it again later, and caused a panic.
>
> OK, follow the instructions for analysing a panic.
>
> >>> I don't understand why this is taking so long. I'm becoming
> >>> confused!
> >>
> >> I haven't seen this before. What does 'ps lawx' say? Output to a
> >> file and then attach it.
> >>
> >> After that, reboot your machine and try the 'vinum create' again. If
> >> it hangs, I'd like to see the output of 'ps lawx' at that point.
> >
> > I'll try and do this.
> >
> > I'll also figure out how to put in a debug kernel, etc.
>
> There's a description in the web page.
>
> Greg
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