Date: Tue, 31 Jan 2012 19:28:53 -0800 From: Devin Teske <devin.teske@fisglobal.com> To: Alex <alex323@gmail.com> Cc: freebsd-jail@freebsd.org Subject: Re: Instability with VIMAGE Message-ID: <DEF21055-C3F9-43E0-814F-ED388FA4063F@fisglobal.com> In-Reply-To: <20120131213131.534682f2@poseidon.unh.edu> References: <20120131213131.534682f2@poseidon.unh.edu>
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On Jan 31, 2012, at 6:31 PM, Alex wrote: > Hello. I am running FreeBSD 9.0-RELEASE, and I am having many > instability issues. Starting a jail and adding an epair works fine > (sort of), but if I were to walk away and come back a few hours later, > the server would be offline and I would need to have someone locally > reboot it. In response, I removed SCTP from the kernel to see if that > would alleviate the problems, but it did not. I tried to terminate a > jail via `jail -r <name>', but I received this message: >=20 > mybox# 30 second watchdog timeout expired. Shutdown terminated. > Tue Jan 31 05:46:47 UTC 2012 > Write failed: Broken pipe >=20 > ...and at this point I would need someone to reboot the server. >=20 It's not really said here whether you're reclaiming the vnet interface with= the "-vnet" flag to ifconfig(8) _before_ shutting down the jail, but it's = generally not advised to rip the rug out from under the interface. At least in 8.1, the vnet doesn't automatically re-appear in the base host,= and if you rip the rug out from under the interface by shutting down the j= ail with "jail -r", then you have to manually reclaim the interface by usin= g the numerical jail-id and the "-vnet" parameter to ifconfig(8). > Am I doing something wrong? Should I avoid using VIMAGE due to its > inherent instability? I don't know about "inherent instability", we're using it every day quite s= tably with dozens of vimages. However, we're not using epair, but rather ne= tgraph. I wrote a boot script for setting up netgraph bridges. If you like,= you have a read (and download an easy-to-install FreeBSD package to try it= out)... http://druidbsd.sf.net/vimage.shtml http://druidbsd.sf.net/download.shtml My boot script supports both simple "vnet" usage (and makes sure to return = the interface to the base host, no matter what), as well as the more compli= cated netgraph(4) bridging. Be sure to read-up on the first link. --=20 Devin _____________ The information contained in this message is proprietary and/or confidentia= l. If you are not the intended recipient, please: (i) delete the message an= d all copies; (ii) do not disclose, distribute or use the message in any ma= nner; and (iii) notify the sender immediately. In addition, please be aware= that any message addressed to our domain is subject to archiving and revie= w by persons other than the intended recipient. Thank you.
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