30 lines
1.2 KiB
Bash
30 lines
1.2 KiB
Bash
#!/bin/sh -eux
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#Copyright 2012-2014, Chef Software, Inc. (<legal@chef.io>)
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#Copyright 2011-2012, Tim Dysinger (<tim@dysinger.net>)
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#Licensed under the Apache License, Version 2.0 (the "License");
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#you may not use this file except in compliance with the License.
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#You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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#Unless required by applicable law or agreed to in writing, software
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#distributed under the License is distributed on an "AS IS" BASIS,
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#WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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#See the License for the specific language governing permissions and
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#limitations under the License.
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echo "Fill with 0 the swap partition to reduce box size"
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readonly swapuuid=$(/sbin/blkid -o value -l -s UUID -t TYPE=swap)
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readonly swappart=$(readlink -f /dev/disk/by-uuid/"$swapuuid")
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/sbin/swapoff "$swappart"
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dd if=/dev/zero of="$swappart" bs=1M || echo "dd exit code $? is suppressed"
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/sbin/mkswap -U "$swapuuid" "$swappart"
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echo "Fill filesystem with 0 to reduce box size"
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dd if=/dev/zero of=/EMPTY bs=1M
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rm -f /EMPTY
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# Block until the empty file has been removed, otherwise, Packer
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# will try to kill the box while the disk is still full and that's bad
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sync
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