And now, to follow up on my original ... I now have two core dumps, if anyone is interested :)

To give some details as to what I'm trying to do here, and how ...

I have a RELENG_6 machine, updated this afternoon, that I am trying to run a 4.x based jail environment on ... and these are what are live/running on my 6 productions 4.x machines right now ...

I have COMPAT_FREEBSD4 built into the kernel:

strings /boot/kernel/kernel | grep -i COMPAT_ | grep __options
___options      COMPAT_43               #Compatible with BSD 4.3 [KEEP THIS!]
___options      COMPAT_FREEBSD4

Now, as most of the "old timers" here know, my jail environment makes use of unionfs to "mount" a template layer, to share common binaries amongst the VMs ...

I have tried two different ways of doing this, both result in the exact same 'file system hang' ... and I have a core of each 'method' ...

The first was to use mount_devfs to, of course, mount the /dev directory within the jail itself ...

The second, I used the same /dev that existed within the jail, based on bulding a jail using a 4.x system ...

In both cases, the hang appears to be at the same spot, where 'sendmail' (in this case, the postfix port) starts up ...

In both cases, I was able to enter DDB using CTL-ALT-ESC and create a dump, but, unlike a server crash, where you just basically bt the core file, I really haven't got a clue where to even start to provide information from the core's themselves ...

So, is there anyone out there able/willing to provide some direction on providing more information?

Thanks ...


On Thu, 28 Jul 2005, Marc G. Fournier wrote:


'k, I'm starting to play with 6.x, for our new server ... my priority right now is to just have it run the existing 'jail' environments from my 4.x machine, while I work on getting all of our servers up to 6.x, and then will worry about the jail's themselves ...

When I try and startup the 4.x jail on my 6.x machine, it "hangs" the file system that the jail directory hierarchy happens to be mounted on though ... twice in a row so far ...

Now, I'm suspecting (and am going to try without it) that it might be because I'm mounting devfs within the 4.x jail, but even then, it shouldn't hang things up, only generate a whack of errors ...

I have a good dump (CTL-ALT-ESC -> panic), but do not have a clue what to offer from within there that might be of any use ...

If anyone is interested ... ?

thanks ...

----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email: [EMAIL PROTECTED]           Yahoo!: yscrappy              ICQ: 7615664


----
Marc G. Fournier           Hub.Org Networking Services (http://www.hub.org)
Email: [EMAIL PROTECTED]           Yahoo!: yscrappy              ICQ: 7615664
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