On Fri, 29 Jul 2005, Robert Watson wrote:


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 ... ?

If you can get into DDB and have serial console output, the following would be useful:

I take it that I can't get this out of kgdb? :( It will take me a little while to get this up ... have the equipment for it, just don't have it setup right now ;(



The output of 'show pcpu'

The output of 'show pcpu X' for each present cpu, starting with 0.

The output of 'ps'

The output of 'trace' for the currently running thread, and each non-idle thread shown in the show pcpu output

The output of 'show lockedvnods'

It would also be useful if, relating to the startup of the jail, you can identify the point in the jail boot where it wedges, and if you hit Ctrl-T, what process is shown as running and what state it is in, and using DDB, trace that process.

If you could show the trace output for each process listed in "show lockevnods".

Likely, there is a leaked lock or a low buffer condition. However, once we have the above output we should be able to say more. The above will hopefully tell us whether it's a vnode deadlock, and ideally, the approximate source.

Robert N M Watson



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