OCPBUGS-62790: Resize /var fs to 10GiB for ABI installations

data/data/agent/files/usr/local/bin/agent-gather

@@ -78,6 +78,8 @@ function gather_storage_data() {
 	cp /etc/mtab "${ARTIFACTS_DIR}/etc/mtab"
 	( >&2 echo -n ".")
 	lsblk > "${ARTIFACTS_DIR}/lsblk"
+	( >&2 echo -n ".")
+        df -h > "${ARTIFACTS_DIR}/df"
 	( >&2 echo " Done")
 }
 

data/data/bootstrap/files/etc/systemd/system/node-image-pull.service

@@ -1,7 +1,8 @@
 [Unit]
 Description=Node Image Pull
 Requires=network.target NetworkManager.service
-After=network.target
+Wants=resize-ephemeral.service
+After=network.target resize-ephemeral.service
 
 [Service]
 Type=oneshot

data/data/bootstrap/files/etc/systemd/system/resize-ephemeral.service

@@ -0,0 +1,10 @@
+[Unit]
+Description=Resize ephemeral disk
+Requires=network.target NetworkManager.service
+Before=node-image-pull.service bootkube.service
+ConditionPathExists=/run/ostree-live
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/local/bin/resize-ephemeral.sh 12G

data/data/bootstrap/files/usr/local/bin/node-image-pull.sh.template

@@ -85,6 +85,8 @@ ostree checkout --repo "${ostree_repo}" ${hardlink} coreos/node-image "${ostree_
 
 # in the assisted-installer case, nuke the temporary repo to save RAM
 if grep -q coreos.liveiso= /proc/cmdline; then
+    df -h "${ostree_repo}"
     echo "Deleting temporary repo"
     rm -rf "${ostree_repo}"
+    df -h "${ostree_checkout}"
 fi

data/data/bootstrap/files/usr/local/bin/resize-ephemeral.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+set -eu
+
+TARGET_SIZE="$1"
+BASE_DIR="/run/ephemeral_base"
+LOOPBACK_FILE="${BASE_DIR}/loopfs"
+
+function get_size_bytes() {
+    printf "%d" "$(($(stat -f -c "%b * %s" "${BASE_DIR}")))"
+}
+
+TARGET_SIZE_BYTES="$(numfmt --from=iec "${TARGET_SIZE}")"
+CURRENT_SIZE_BYTES="$(get_size_bytes)"
+CURRENT_SIZE="$(numfmt --to=iec "${CURRENT_SIZE_BYTES}")"
+
+if ((TARGET_SIZE_BYTES > CURRENT_SIZE_BYTES)); then
+    echo "Expanding ephemeral base dir from ${CURRENT_SIZE} to ${TARGET_SIZE}"
+    mount -o remount,size="${TARGET_SIZE}" "${BASE_DIR}"
+
+    echo "Expanding ephemeral loopback"
+    truncate -s "$(get_size_bytes)" "${LOOPBACK_FILE}"
+
+    LOOPBACK_DEVICE="$(losetup -j "${LOOPBACK_FILE}" -O NAME -n)"
+    losetup -c "${LOOPBACK_DEVICE}"
+
+    echo "Expanding ephemeral filesystem"
+    xfs_growfs -d "${LOOPBACK_DEVICE}"
+else
+    echo "Ephemeral base dir size ${CURRENT_SIZE} is already larger than ${TARGET_SIZE}; not expanding"
+fi
+
+df -h