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Remove zeroing the disk, use fstrim+sync to trim the disk

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This should be functionally equivalent with less I/O burden.

Signed-off-by: Neal Gompa <ngompa@fedoraproject.org>
This commit is contained in:
Neal Gompa 2021-07-16 08:44:01 -04:00
parent 49753d125b
commit 8cad6efa4e
1 changed files with 5 additions and 13 deletions
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18
fedora-cloud-base.ks
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@ -121,18 +121,6 @@ releasever=$(rpm --eval '%{fedora}')
basearch=$(uname -i) basearch=$(uname -i)
rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$releasever-$basearch rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$releasever-$basearch
echo "Zeroing out empty space."
# Create zeros file with nodatacow and no compression
touch /var/tmp/zeros
chattr +C /var/tmp/zeros
# This forces the filesystem to reclaim space from deleted files
dd bs=1M if=/dev/zero of=/var/tmp/zeros || :
echo "(Don't worry -- that out-of-space error was expected.)"
# Force sync to disk (Cf. https://pagure.io/cloud-sig/issue/340#comment-743430)
btrfs filesystem sync /
rm -f /var/tmp/zeros
btrfs filesystem sync /
# When we build the image a networking config file gets left behind. # When we build the image a networking config file gets left behind.
# Let's clean it up. # Let's clean it up.
echo "Cleanup leftover networking configuration" echo "Cleanup leftover networking configuration"
@ -141,8 +129,12 @@ rm -f /etc/NetworkManager/system-connections/*.nmconnection
# Clear machine-id on pre generated images # Clear machine-id on pre generated images
truncate -s 0 /etc/machine-id truncate -s 0 /etc/machine-id
# add fstrim -av to the post section until BZ#1971186 is resolved # Use fstrim to trim the disk of unused blocks
# Cf. BZ#1971186
echo "Trimming the disk of unused blocks."
fstrim -av fstrim -av
# Force sync to disk (Cf. https://pagure.io/cloud-sig/issue/340#comment-743430)
btrfs filesystem sync /
%end %end
##### end kickstart post ############################################ ##### end kickstart post ############################################