Date: Wed, 20 Jan 2010 18:05:54 +0200 From: David Naylor <naylor.b.david@gmail.com> To: gary.jennejohn@freenet.de Cc: freebsd-current@freebsd.org Subject: Re: stacked unionfs freeze and crash FreeBSD Message-ID: <201001201805.57798.naylor.b.david@gmail.com> In-Reply-To: <20100120162821.3f53af6a@ernst.jennejohn.org> References: <201001201543.15818.naylor.b.david@gmail.com> <20100120162821.3f53af6a@ernst.jennejohn.org>
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On Wednesday 20 January 2010 17:28:21 Gary Jennejohn wrote:
> On Wed, 20 Jan 2010 15:43:12 +0200 David Naylor wrote:
> > Hi,
> >
> > The attached script, that uses stacked unionfs, causes FreeBSD-9 (cvsup
> > yesterday) to freeze and FreeBSD-8 (cvsup two days ago) to crash:
> >
> > Fatal double fault
> > rip-0xffffffff81e4c1
> > rsp=3D0xffffff80b133ef50
> > rbp=3D0xffffff80b133f150
> > cupid =3D 2; apic id =3D 02
> > panic: double fault
> > cpuid =3D 2
> > uptime: 1h44m35s
> > cannot dump. Device not defined or unavailable
> >
> >
> > Both systems use the stock GENERIC kernel, i.e. -9 had full diagnostics
> > built in (and was run under VirtualBox) and -8 had no diagnostics (and
> > was run native).
> >
> > A LOR is produces prior to freezing under -9 (quiet a time prior). See
> > kern/141950.
> >
> > The script uses unionfs to build ports (in an attempt to create a
> > tinderbox without the need to delete and/or extract packages). To use
> > the script to:
> >
> > # mkdir /tmp/localbase /tmp/builddir
> > # env LOCALBASE=3D/tmp/localbase BUILDDIR=3D/tmp/builddir
> > ./ports-union-builder.sh
>=20
> Is your /tmp big enough?
I was actually using /home, didn't think people wanted to contaminate that=
=20
directory. Plenty of space. =20
> > This will try build everything for x11/xorg.
> >
> > Is it possible that VirtualBox is interfering in getting usable
> > diagnostics for -9
>=20
> Who knows? You might try posting your shell script so others can give
> it a whirl on a "real" 9-current system.
I did attach the script. Guess mailer ate it, again. I'll try again... =20
> > and how can I setup a dump device for -8. Currently I have:
> >
> > # swapinfo
> > Device 1K-blocks Used Avail Capacity
> > /dev/ad4s1b 8388608 0 8388608 0%
> > /dev/ad8s1b 8388608 0 8388608 0%
> > Total 16777216 0 16777216 0%
>=20
> Do you have dumpdev defined in /etc/rc.conf and/or do you see
> /dev/dumpdev? Having /dev/dumpdev indicates that dumpon succeeded.
No I haven't and no I don't. I thought it automatically used swap? =20
I'll 'activate' it and post the results. =20
> Do you have less than 8GB of memory? See dumpon(8) for restrictions.
I have 6GB. =20
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#!/bin/sh
BUILDDIR=${BUILDDIR:-/usr/build}
LOCALBASE=${LOCALBASE:-/usr/local}
PORTSDIR=${PORTSDIR:-/usr/ports}
PORT_DBDIR=${PKG_DBDIR:-$BUILDDIR/db_ports}
PKG_DBDIR=${PKG_DBDIR:-$BUILDDIR/db_pkg}
PACKAGES=${PACKAGES:-$BUILDDIR/packages}
MAKE="env LOCALBASE=$LOCALBASE PORTSDIR=$PORTSDIR PORT_DBDIR=$PORT_DBDIR PKG_DBDIR=$PKG_DBDIR PACKAGES=$PACKAGES make"
set -e
mkdir -p $BUILDDIR $LOCALBASE $PKG_DBDIR $PACKAGES
port2name() {
echo $1 | sed 's|[/.-]|_|g'
}
port2pkg() {
local pkg_name=
local port=
port=$1; shift
eval pkg_name=PKG$(port2name $port)
eval pkg=\$$pkg_name
if [ -z "$pkg" ]
then
pkg=$($MAKE -C $port -V PKGNAME)
eval $pkg_name=$pkg
fi
}
depends() {
local depend=
local depends_name=
local _deps=
local name=
local port=
port=$1
eval depends_name=DEPEND$(port2name $port)
eval deps=\"\$$depends_name\"
if [ -z "$deps" ]
then
echo "Getting dependancies for $port" > /dev/stderr
depend_list="$($MAKE -C $port -V BUILD_DEPENDS -V LIB_DEPENDS -V RUN_DEPENDS)"
for depend in $depend_list
do
name=$(echo $depend | cut -f 2 -d ':')
depends $name
_deps="$_deps $deps $name"
done
deps=$(for depend in $_deps
do
echo $depend
done | sort -u)
depends_name=$depends_name
eval $depends_name=\"$deps \"
fi
}
build() {
local _deps=
local dep=
local port=
port=$1
depends $port
_deps="$deps"
for dep in $_deps
do
port2pkg $dep
if [ ! -d $BUILDDIR/$pkg ]
then
if ! build $dep
then
echo "Port $port failed due to dependancy $dep"
return 255
fi
fi
done
echo "Building port $port..."
for pkg in $_deps
do
port2pkg $pkg
mount -t unionfs -r -o noatime $BUILDDIR/$pkg $LOCALBASE
done
port2pkg $port
mkdir -p $BUILDDIR/$pkg
mount -t unionfs -o noatime $BUILDDIR/$pkg $LOCALBASE
set +e
trap "true" INT TERM EXIT
$MAKE -C $port clean build install package -DNO_DEPENDS -DBATCH
status=$?
trap - INT TERM EXIT
set -e
umount $LOCALBASE
for pkg in $(echo $_deps | sort -r)
do
#port2pkg $pkg
umount $LOCALBASE
done
if [ $status -ne 0 ]
then
echo "Port $port failed to build"
rm -rf $BUILDDIR/$pkg || (chflags -R 0 $BUILDDIR/$pkg; rm -rf $BUILDDIR/$pkg)
else
$MAKE -C $port clean
fi
return $status
}
build /usr/ports/x11/xorg
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