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Dropping bigdata cloud spin from f21
This commit is contained in:
Matthew Miller
parent
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commit
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# This is a Fedora 21 spin designed based on the Fedora Cloud Base Image
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# but tailored specifically for Big Data processing out-of-the-box.
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# Primarily, it builds on that image but adds extra packages, but over
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# time may have additional focus.
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#
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# It's configured with cloud-init so it will take advantage of
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# ec2-compatible metadata services for provisioning ssh keys. Cloud-init
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# creates a user account named "fedora" with passwordless sudo access. The
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# root password is empty and locked by default.
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#
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# Note that unlike the standard F20 install, this image has /tmp on disk
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# rather than in tmpfs, since memory is usually at a premium.
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text
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lang en_US.UTF-8
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keyboard us
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timezone --utc Etc/UTC
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auth --useshadow --enablemd5
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selinux --enforcing
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rootpw --lock --iscrypted locked
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user --name=none
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firewall --disabled
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bootloader --timeout=1 --append="no_timer_check console=tty1 console=ttyS0,115200n8" --extlinux
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network --bootproto=dhcp --device=eth0 --activate --onboot=on
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services --enabled=network,sshd,rsyslog,cloud-init,cloud-init-local,cloud-config,cloud-final
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zerombr
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clearpart --all
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part / --size 3000 --fstype ext4
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%include fedora-repo.ks
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reboot
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# Package list.
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%packages
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fedora-release-cloud
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kernel-core
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@core
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@cloud-server
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# Needed initially, but removed below.
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firewalld
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# rescue mode generally isn't useful in the cloud context
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-dracut-config-rescue
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# Some things from @core we can do without in a minimal install
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-biosdevname
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-plymouth
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-NetworkManager
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-iprutils
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-kbd
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-uboot-tools
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-kernel
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-grub2
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%end
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%post --erroronfail
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# Create grub.conf for EC2. This used to be done by appliance creator but
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# anaconda doesn't do it. And, in case appliance-creator is used, we're
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# overriding it here so that both cases get the exact same file.
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# Note that the console line is different -- that's because EC2 provides
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# different virtual hardware, and this is a convenient way to act differently
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echo -n "Creating grub.conf for pvgrub"
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rootuuid=$( awk '$2=="/" { print $1 };' /etc/fstab )
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mkdir /boot/grub
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echo -e 'default=0\ntimeout=0\n\n' > /boot/grub/grub.conf
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for kv in $( ls -1v /boot/vmlinuz* |grep -v rescue |sed s/.*vmlinuz-// ); do
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echo "title Fedora ($kv)" >> /boot/grub/grub.conf
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echo -e "\troot (hd0,0)" >> /boot/grub/grub.conf
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echo -e "\tkernel /boot/vmlinuz-$kv ro root=$rootuuid no_timer_check console=hvc0 LANG=en_US.UTF-8" >> /boot/grub/grub.conf
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echo -e "\tinitrd /boot/initramfs-$kv.img" >> /boot/grub/grub.conf
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echo
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done
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#link grub.conf to menu.lst for ec2 to work
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echo -n "Linking menu.lst to old-style grub.conf for pv-grub"
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ln -sf grub.conf /boot/grub/menu.lst
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ln -sf /boot/grub/grub.conf /etc/grub.conf
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# older versions of livecd-tools do not follow "rootpw --lock" line above
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# https://bugzilla.redhat.com/show_bug.cgi?id=964299
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passwd -l root
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# remove the user anaconda forces us to make
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userdel -r none
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# Kickstart specifies timeout in seconds; syslinux uses 10ths.
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# 0 means wait forever, so instead we'll go with 1.
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sed -i 's/^timeout 10/timeout 1/' /boot/extlinux/extlinux.conf
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# setup systemd to boot to the right runlevel
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echo -n "Setting default runlevel to multiuser text mode"
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rm -f /etc/systemd/system/default.target
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ln -s /lib/systemd/system/multi-user.target /etc/systemd/system/default.target
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echo .
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# If you want to remove rsyslog and just use journald, remove this!
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echo -n "Disabling persistent journal"
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rmdir /var/log/journal/
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echo .
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# this is installed by default but we don't need it in virt
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echo "Removing linux-firmware package."
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yum -C -y remove linux-firmware
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# Remove firewalld; was supposed to be optional in F18+, but is required to
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# be present for install/image building.
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echo "Removing firewalld."
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yum -C -y remove firewalld --setopt="clean_requirements_on_remove=1"
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# Another one needed at install time but not after that, and it pulls
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# in some unneeded deps (like, newt and slang)
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echo "Removing authconfig."
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yum -C -y remove authconfig --setopt="clean_requirements_on_remove=1"
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echo -n "Getty fixes"
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# although we want console output going to the serial console, we don't
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# actually have the opportunity to login there. FIX.
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# we don't really need to auto-spawn _any_ gettys.
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sed -i '/^#NAutoVTs=.*/ a\
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NAutoVTs=0' /etc/systemd/logind.conf
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echo -n "Network fixes"
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# initscripts don't like this file to be missing.
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cat > /etc/sysconfig/network << EOF
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NETWORKING=yes
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NOZEROCONF=yes
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EOF
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# For cloud images, 'eth0' _is_ the predictable device name, since
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# we don't want to be tied to specific virtual (!) hardware
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rm -f /etc/udev/rules.d/70*
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ln -s /dev/null /etc/udev/rules.d/80-net-setup-link.rules
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# simple eth0 config, again not hard-coded to the build hardware
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cat > /etc/sysconfig/network-scripts/ifcfg-eth0 << EOF
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DEVICE="eth0"
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BOOTPROTO="dhcp"
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ONBOOT="yes"
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TYPE="Ethernet"
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PERSISTENT_DHCLIENT="yes"
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EOF
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# generic localhost names
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cat > /etc/hosts << EOF
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127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
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::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
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EOF
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echo .
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# Because memory is scarce resource in most cloud/virt environments,
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# and because this impedes forensics, we are differing from the Fedora
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# default of having /tmp on tmpfs.
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echo "Disabling tmpfs for /tmp."
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systemctl mask tmp.mount
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# make sure firstboot doesn't start
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echo "RUN_FIRSTBOOT=NO" > /etc/sysconfig/firstboot
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# Uncomment this if you want to use cloud init but suppress the creation
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# of an "ec2-user" account. This will, in the absence of further config,
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# cause the ssh key from a metadata source to be put in the root account.
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#cat <<EOF > /etc/cloud/cloud.cfg.d/50_suppress_ec2-user_use_root.cfg
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#users: []
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#disable_root: 0
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#EOF
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echo "Removing random-seed so it's not the same in every image."
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rm -f /var/lib/random-seed
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echo "Cleaning old yum repodata."
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yum history new
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yum clean all
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truncate -c -s 0 /var/log/yum.log
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echo "Import RPM GPG key"
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releasever=$(rpm -q --qf '%{version}\n' fedora-release)
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basearch=$(uname -i)
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rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$releasever-$basearch
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echo "Packages within this cloud image:"
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echo "-----------------------------------------------------------------------"
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rpm -qa
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echo "-----------------------------------------------------------------------"
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# Note that running rpm recreates the rpm db files which aren't needed/wanted
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rm -f /var/lib/rpm/__db*
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# This is a temporary workaround for
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# <https://bugzilla.redhat.com/show_bug.cgi?id=1147998>
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# where sfdisk seems to be messing up the mbr.
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# Long-term fix is to address this in anaconda directly and remove this.
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# <https://bugzilla.redhat.com/show_bug.cgi?id=1015931>
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dd if=/usr/share/syslinux/mbr.bin of=/dev/vda
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echo "Fixing SELinux contexts."
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touch /var/log/cron
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touch /var/log/boot.log
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mkdir -p /var/cache/yum
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chattr -i /boot/extlinux/ldlinux.sys
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/usr/sbin/fixfiles -R -a restore
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chattr +i /boot/extlinux/ldlinux.sys
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echo "Zeroing out empty space."
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# This forces the filesystem to reclaim space from deleted files
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dd bs=1M if=/dev/zero of=/var/tmp/zeros || :
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rm -f /var/tmp/zeros
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echo "(Don't worry -- that out-of-space error was expected.)"
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%end
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