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kubesolo-os/init/lib/20-persistent-mount.sh
Adolfo Delorenzo 6ff77c4482
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fix: resolve LABEL= syntax for RPi data partition
The cmdline uses kubesolo.data=LABEL=KSOLODATA, but the wait loop
in 20-persistent-mount.sh checked [ -b "LABEL=KSOLODATA" ] which
is always false — it's a label reference, not a block device path.

Fix by detecting LABEL= prefix and resolving it to a block device
path via blkid -L in the wait loop. Also loads mmc_block module as
fallback for platforms where it's not built-in.

Adds debug output listing available block devices on failure.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-12 19:05:10 -06:00

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#!/bin/sh
# 20-persistent-mount.sh — Mount persistent data partition and bind-mount writable paths
if [ "$KUBESOLO_NOPERSIST" = "1" ]; then
log "Running in RAM-only mode — no persistent storage"
# Create tmpfs-backed directories so KubeSolo has somewhere to write
mkdir -p /var/lib/kubesolo /var/lib/containerd /etc/kubesolo /var/log /usr/local
return 0
fi
# Load block device drivers before waiting (modules loaded later in stage 30,
# but we need virtio_blk available NOW for /dev/vda detection)
modprobe virtio_blk 2>/dev/null || true
modprobe mmc_block 2>/dev/null || true
# Trigger mdev to create device nodes after loading driver
mdev -s 2>/dev/null || true
# Resolve LABEL= syntax to actual block device path
# The RPi cmdline uses kubesolo.data=LABEL=KSOLODATA which needs resolution
WAIT_SECS=30
log "Waiting for data device: $KUBESOLO_DATA_DEV"
case "$KUBESOLO_DATA_DEV" in
LABEL=*)
# Extract label name and resolve via blkid/findfs
DATA_LABEL="${KUBESOLO_DATA_DEV#LABEL=}"
RESOLVED=""
for i in $(seq 1 "$WAIT_SECS"); do
mdev -s 2>/dev/null || true
RESOLVED=$(blkid -L "$DATA_LABEL" 2>/dev/null) || true
if [ -z "$RESOLVED" ]; then
RESOLVED=$(findfs "LABEL=$DATA_LABEL" 2>/dev/null) || true
fi
if [ -n "$RESOLVED" ] && [ -b "$RESOLVED" ]; then
log "Resolved LABEL=$DATA_LABEL -> $RESOLVED"
KUBESOLO_DATA_DEV="$RESOLVED"
break
fi
sleep 1
done
;;
*)
# Direct block device path — wait for it to appear
# Fallback: create device node from sysfs if devtmpfs/mdev didn't
DEV_NAME="${KUBESOLO_DATA_DEV##*/}"
if [ ! -b "$KUBESOLO_DATA_DEV" ] && [ -f "/sys/class/block/$DEV_NAME/dev" ]; then
MAJMIN=$(cat "/sys/class/block/$DEV_NAME/dev")
mknod "$KUBESOLO_DATA_DEV" b "${MAJMIN%%:*}" "${MAJMIN##*:}" 2>/dev/null || true
log "Created $KUBESOLO_DATA_DEV via mknod ($MAJMIN)"
fi
for i in $(seq 1 "$WAIT_SECS"); do
[ -b "$KUBESOLO_DATA_DEV" ] && break
mdev -s 2>/dev/null || true
sleep 1
done
;;
esac
if [ ! -b "$KUBESOLO_DATA_DEV" ]; then
log_err "Data device $KUBESOLO_DATA_DEV not found after ${WAIT_SECS}s"
# Show available block devices for debugging
log_err "Available block devices:"
ls -la /dev/mmc* /dev/sd* /dev/vd* 2>/dev/null | while read -r line; do
log_err " $line"
done
return 1
fi
# Mount data partition (format on first boot if unformatted)
mkdir -p "$DATA_MOUNT"
if ! mount -t ext4 -o noatime,nosuid,nodev "$KUBESOLO_DATA_DEV" "$DATA_MOUNT" 2>/dev/null; then
log "Formatting $KUBESOLO_DATA_DEV as ext4 (first boot)"
mkfs.ext4 -q -L KSOLODATA "$KUBESOLO_DATA_DEV" || {
log_err "Failed to format $KUBESOLO_DATA_DEV"
return 1
}
mount -t ext4 -o noatime,nosuid,nodev "$KUBESOLO_DATA_DEV" "$DATA_MOUNT" || {
log_err "Failed to mount $KUBESOLO_DATA_DEV after format"
return 1
}
fi
log_ok "Mounted $KUBESOLO_DATA_DEV at $DATA_MOUNT"
# Create persistent directory structure (first boot)
for dir in kubesolo containerd etc-kubesolo log usr-local network; do
mkdir -p "$DATA_MOUNT/$dir"
done
# Ensure target mount points exist
mkdir -p /var/lib/kubesolo /var/lib/containerd /etc/kubesolo /var/log /usr/local
# Bind mount persistent paths
mount --bind "$DATA_MOUNT/kubesolo" /var/lib/kubesolo
mount --bind "$DATA_MOUNT/containerd" /var/lib/containerd
mount --bind "$DATA_MOUNT/etc-kubesolo" /etc/kubesolo
mount --bind "$DATA_MOUNT/log" /var/log
mount --bind "$DATA_MOUNT/usr-local" /usr/local
log_ok "Persistent bind mounts configured"