feat(base): grow every managed filesystem, online and on xfs

README.md

@@ -10,7 +10,7 @@ This repository builds two base images for Exordos Core project. The images cont
 The key features are:
 
 - [Universal Agent](https://github.com/infraguys/gcl_sdk/wiki/universal_agent) service.
-- Exordos root autoresize service. Tries to perform resize of the root partition at every boot if it's possible.
+- Exordos autoresize service. Grows partitions and filesystems (ext2/3/4 and xfs) up to the disk size, at every boot and, via a udev rule, when the hypervisor enlarges a disk of a running machine.
 - Exordos bootstrap service. Runs the bootstrap scripts.
 
 ## 🛠️ Build

exordos/images/exordos_base/etc/systemd/exordos-root-autoresize.service → exordos/images/exordos_base/etc/systemd/exordos-autoresize.service

@@ -1,8 +1,8 @@
 [Unit]
-Description=Exordos root autoresize one shot unit
-DefaultDependencies=no
+Description=Exordos disk autoresize one shot unit
 Conflicts=shutdown.target
-Before=local-fs.target shutdown.target
+After=local-fs.target
+Before=shutdown.target
 
 [Service]
 Type=oneshot
@@ -12,7 +12,7 @@ RestartSec=5s
 TimeoutStopSec=5
 RemainAfterExit=yes
 StandardOutput=journal
-ExecStart=/usr/bin/root_autoresize.sh
+ExecStart=/usr/bin/exordos_autoresize.sh
 
 [Install]
 WantedBy=multi-user.target

exordos/images/exordos_base/etc/systemd/exordos-autoresize@.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=Exordos disk autoresize for /dev/%i
+Conflicts=shutdown.target
+Before=shutdown.target
+
+[Service]
+Type=oneshot
+StandardOutput=journal
+ExecStart=/usr/bin/exordos_autoresize.sh /dev/%i

exordos/images/exordos_base/etc/udev/90-exordos-autoresize.rules

@@ -0,0 +1,5 @@
+# The kernel emits a "change" uevent with RESIZE=1 when the hypervisor
+# enlarges a disk of a running machine. Grow the partitions and filesystems
+# on that disk so the new space becomes usable without a reboot.
+ACTION=="change", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{RESIZE}=="1", \
+    ENV{SYSTEMD_WANTS}+="exordos-autoresize@%k.service"

exordos/images/exordos_base/exordos_autoresize.sh

@@ -0,0 +1,111 @@
+#!/usr/bin/env bash
+
+# Copyright 2025-2026 Genesis Corporation
+#
+# All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+# Grow partitions and filesystems up to the size of the underlying disk.
+#
+# Usage:
+#   exordos_autoresize.sh            grow every mounted partition
+#   exordos_autoresize.sh <disk>     grow the mounted partitions of one disk
+#
+# The first form runs once at boot and covers disks that were enlarged while
+# the machine was off. The second form is triggered by udev when the
+# hypervisor enlarges a disk of a running machine.
+
+set -eu
+set -x
+set -o pipefail
+
+log() {
+  echo "[exordos-autoresize] $*"
+}
+
+wait_for_rw_root() {
+  while [[ "$(findmnt / -o options -n | grep -E "^ro,|,ro,|,ro$")" != "" ]]
+  do
+    log "Waiting for root partition to be in RW mode"
+    sleep 2
+  done
+}
+
+# List "<partition> <mount point>" pairs of mounted partitions.
+# Args:
+#   $1 - (optional) disk to limit the listing to, e.g. /dev/vda
+list_mounted_partitions() {
+  local disk="${1:-}"
+
+  # shellcheck disable=SC2086
+  lsblk -nr -o PATH,TYPE,MOUNTPOINT ${disk:+"$disk"} \
+    | awk '$2 == "part" && $3 != "" && $3 != "[SWAP]" {print $1, $3}'
+}
+
+# Grow a single mounted partition and the filesystem on it.
+# Args:
+#   $1 - partition device, e.g. /dev/vda1
+#   $2 - mount point of that partition, e.g. /
+grow_partition() {
+  local part="$1"
+  local mount_point="$2"
+  local disk partition_number fstype
+
+  fstype="$(findmnt -n -o FSTYPE "$mount_point")"
+
+  # Partitions we cannot grow are expected here: the sweep walks every mounted
+  # partition, and images ship an EFI system partition among them.
+  case "$fstype" in
+    ext2|ext3|ext4|xfs) ;;
+    *)
+      log "Filesystem '$fstype' on $part is not growable; skipping"
+      return 0
+      ;;
+  esac
+
+  disk="/dev/$(lsblk -no PKNAME "$part")"
+  partition_number="$(cat "/sys/class/block/$(basename "$part")/partition")"
+
+  log "Growing $part ($fstype) on disk $disk, partition $partition_number, mounted at $mount_point"
+
+  # growpart exits non-zero when the partition is already the last one and
+  # occupies the whole disk, so failures here are not fatal.
+  growpart "$disk" "$partition_number" || true
+
+  case "$fstype" in
+    ext2|ext3|ext4)
+      resize2fs "$part"
+      ;;
+    xfs)
+      # XFS grows by mount point, not by device
+      xfs_growfs "$mount_point"
+      ;;
+  esac
+}
+
+DISK="${1:-}"
+
+if [[ -n "$DISK" && ! -b "$DISK" ]]; then
+  log "Disk $DISK does not exist; nothing to grow"
+  exit 0
+fi
+
+wait_for_rw_root
+
+RC=0
+while read -r PART MOUNT_POINT; do
+  grow_partition "$PART" "$MOUNT_POINT" || RC=1
+done < <(list_mounted_partitions "$DISK")
+
+exit "$RC"

exordos/images/exordos_base/install.sh

@@ -79,15 +79,17 @@ sudo ln -sf "$AGENT_PATH/.venv/bin/exordos-universal-agent" "/usr/bin/exordos-un
 # Install stuff for bootstrap procedure and systemd services
 sudo mkdir -p "$WORK_DIR/bootstrap/scripts/"
 sudo cp "$IMG_ARTS_PATH/bootstrap.sh" "$WORK_DIR/bootstrap/"
-sudo cp "$IMG_ARTS_PATH/root_autoresize.sh" "/usr/bin/"
+sudo cp "$IMG_ARTS_PATH/exordos_autoresize.sh" "/usr/bin/"
 sudo cp "$IMG_ARTS_PATH/etc/systemd/exordos-bootstrap.service" $SYSTEMD_SERVICE_DIR
-sudo cp "$IMG_ARTS_PATH/etc/systemd/exordos-root-autoresize.service" $SYSTEMD_SERVICE_DIR
+sudo cp "$IMG_ARTS_PATH/etc/systemd/exordos-autoresize.service" $SYSTEMD_SERVICE_DIR
+sudo cp "$IMG_ARTS_PATH/etc/systemd/exordos-autoresize@.service" $SYSTEMD_SERVICE_DIR
 sudo cp "$IMG_ARTS_PATH/etc/systemd/exordos-universal-agent.service" $SYSTEMD_SERVICE_DIR
+sudo cp "$IMG_ARTS_PATH/etc/udev/90-exordos-autoresize.rules" /etc/udev/rules.d/
 sudo mkdir -p "/usr/local/lib/exordos/"
 sudo cp -a "$IMG_ARTS_PATH/lib/." "/usr/local/lib/exordos/"
 
 # Enable exordos core services
-sudo systemctl enable exordos-bootstrap exordos-root-autoresize exordos-universal-agent
+sudo systemctl enable exordos-bootstrap exordos-autoresize exordos-universal-agent
 
 # Commented out because we don't need Alloy for now and we are going to change monitoring solution
 # Install Alloy