Date: Fri, 29 Jul 2005 00:22:41 -0300 (ADT) From: "Marc G. Fournier" <scrappy@hub.org> To: freebsd-stable@freebsd.org Subject: Re: Consistent file system hang with RELENG_6 of today ... Message-ID: <20050729001252.N1194@ganymede.hub.org> In-Reply-To: <20050728231728.E968@ganymede.hub.org> References: <20050728231728.E968@ganymede.hub.org>
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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: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664 > ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664
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