Date: Wed, 15 Mar 2017 13:00:57 +0530 From: Reshad Patuck <reshadpatuck1@gmail.com> To: freebsd-net@freebsd.org Subject: Re: VNET kernel panic on remove renamed interfaces Message-ID: <29BBA4DB-3A13-42DD-8A79-89E4DB85BF9C@gmail.com> In-Reply-To: <C20DF21D-A392-4AB7-852F-4D3E599956A3@gmail.com> References: <C20DF21D-A392-4AB7-852F-4D3E599956A3@gmail.com>
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Looks like my scripts did not come through. Here is a link to them https://paste.ee/p/lB3iE Best, Reshad On 14 March 2017 23:55:23 GMT+05:30, Reshad Patuck <reshadpatuck1@gmail.com> wrote: >Hi, > >I am trying to use vnet and pf to host multiple (100s of) jails on a >server with a jailed pf router, which will be spun up and down by a >script. > >I rename the epair interfaces so that I know which jail links to which >interface (for convenience). > >After I delete the jail and renamed epair the kernel panics when I >attempt to recreate the epair. > >I believe this is an issue occurs only when I have renamed the epair. > >This issue seems to be fixed in 12-CURRENT as I can not make it crash >on current. However this continues to happen on 11-STABLE and >11.0-RELEASE. > >I have found these which seem to fix something similar issues: >https://svnweb.freebsd.org/base?view=revision&sortby=rev&revision=292604 >https://svnweb.freebsd.org/base/projects/vnet/_scripts/jail-vnet-epair-regression01.sh?view=markup > >I have attached scripts that crash the system for the latest versions >on 11.0-RELEASE and 11-STABLE branches. > >Can someone help me find where this problem was fixed? (for 12) and if >there are any plans to backport the fix to the 11 branch. > >Also any tips on running 100s of VNET jails on a single box would be >much appreciated, and if there is anything I can help test I have some >physical and VMware boxes I can test on. > >Kernel version I have tested on: >FreeBSD FreeBSD-11-RELEASE 11.0-RELEASE-p8 FreeBSD 11.0-RELEASE-p8 #1 >r315007: Fri Mar 10 17:27:30 UTC 2017 >root@FreeBSD-11-RELEASE:/usr/obj/usr/src/sys/VNET amd64 >FreeBSD FreeBSD-11-STABLE 11.0-STABLE FreeBSD 11.0-STABLE #1 r315241: >Tue Mar 14 12:58:54 UTC 2017 >root@FreeBSD-11-STABLE:/usr/obj/usr/src/sys/VNET amd64 >FreeBSD FreeBSD-12 12.0-CURRENT FreeBSD 12.0-CURRENT #1 r315237: Tue >Mar 14 10:17:06 UTC 2017 root@FreeBSD-12:/usr/obj/usr/src/sys/VNET >amd64 > >Attached: >vnet-rename-epair.sh - Create and destroy a VNET jail in a loop while >renaming the epair interface. This crashes on 11. >vnet-no-rename-epair.sh - Create and destroy a VNET jail while not >renaming the epair interface. This does not crash. >info.0 - info file from core dump on FreeBSD-11-STABLE >core.txt.0 - core.txt.0 file from core dump on FreeBSD-11-STABLE > >Best regards, > >Reshad
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