Force the filesystem to sync to disk before trimming
This ensures that data discard works properly.
Fixes: bc7e8ce561
Signed-off-by: Neal Gompa <ngompa@fedoraproject.org>
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@ -124,8 +124,11 @@ rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$releasever-$basearch
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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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# Force sync to disk (Cf. https://pagure.io/cloud-sig/issue/340#comment-743430)
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btrfs filesystem sync /
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rm -f /var/tmp/zeros
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btrfs filesystem sync /
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# When we build the image a networking config file gets left behind.
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# Let's clean it up.
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