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1 | 1 | logger -t "rc.firstboot" "Expanding root partition" |
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2 | 2 | |
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3 | 3 | # Detect root partition device |
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4 | 4 | ROOT_PART=$(mount | sed -n 's|^/dev/\(.*\) on / .*|\1|p') |
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5 | 5 | if [ -z "$ROOT_PART" ] ; then |
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6 | 6 | log_warning_msg "unable to detect root partition device" |
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7 | 7 | return 1 |
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8 | 8 | fi |
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9 | 9 | |
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10 | 10 | # Extract root device name |
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11 | 11 | case "${ROOT_PART}" in |
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12 | 12 | mmcblk0*) ROOT_DEV=mmcblk0 ;; |
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13 | 13 | sda*) ROOT_DEV=sda ;; |
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14 | 14 | esac |
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15 | 15 | |
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16 | 16 | # Check detected root partition name |
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17 | 17 | PART_NUM=$(echo ${ROOT_PART} | grep -o '[1-9][0-9]*$') |
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18 | 18 | if [ "$PART_NUM" = "$ROOT_PART" ] ; then |
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19 | 19 | logger -t "rc.firstboot" "$ROOT_PART is not an SD card. Don't know how to expand" |
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20 | 20 | return 0 |
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21 | 21 | fi |
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22 | 22 | |
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23 | 23 | # NOTE: the NOOBS partition layout confuses parted. For now, let's only |
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24 | 24 | # agree to work with a sufficiently simple partition layout |
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25 | 25 | if [ "$PART_NUM" -gt 2 ] ; then |
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26 | 26 | logger -t "rc.firstboot" "Your partition layout is not currently supported by this tool." |
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27 | 27 | return 0 |
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28 | 28 | fi |
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29 | 29 | |
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30 | 30 | # Check if last partition number |
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31 | 31 | LAST_PART_NUM=$(parted /dev/${ROOT_DEV} -ms unit s p | tail -n 1 | cut -f 1 -d:) |
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32 | 32 | if [ $LAST_PART_NUM -ne $PART_NUM ]; then |
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33 | 33 | logger -t "rc.firstboot" "$ROOT_PART is not the last partition. Don't know how to expand" |
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34 | 34 | return 0 |
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35 | 35 | fi |
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36 | 36 | |
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37 | 37 | # Get the starting offset of the root partition |
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38 | 38 | PART_START=$(parted /dev/${ROOT_DEV} -ms unit s p | grep "^${PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g') |
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39 | 39 | if [ -z "$PART_START" ] ; then |
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40 | 40 | logger -t "rc.firstboot" "${ROOT_DEV} unable to get starting sector of the partition" |
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41 | 41 | return 1 |
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42 | 42 | fi |
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43 | 43 | |
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44 | 44 | # Get the possible last sector for the root partition |
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45 | 45 | PART_LAST=$(fdisk -l /dev/${ROOT_DEV} | grep '^Disk.*sectors' | awk '{ print $7 - 1 }') |
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46 | 46 | if [ -z "$PART_LAST" ] ; then |
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47 | 47 | logger -t "rc.firstboot" "${ROOT_DEV} unable to get last sector of the partition" |
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48 | 48 | return 1 |
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49 | 49 | fi |
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50 | 50 | |
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51 | 51 | ### Since rc.local is run with "sh -e", let's add "|| true" to prevent premature exit |
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52 | 52 | fdisk /dev/${ROOT_DEV} <<EOF2 || true |
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53 | 53 | p |
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54 | 54 | d |
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55 | 55 | $PART_NUM |
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56 | 56 | n |
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57 | 57 | p |
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58 | 58 | $PART_NUM |
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59 | 59 | $PART_START |
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60 | 60 | $PART_LAST |
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61 | 61 | p |
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62 | 62 | w |
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63 | 63 | EOF2 |
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64 | 64 | |
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65 | 65 | # Reload the partition table, resize root filesystem then remove resizing code from this file |
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66 | 66 | partprobe && |
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67 | 67 | resize2fs /dev/${ROOT_PART} && |
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68 | 68 | logger -t "rc.firstboot" "Root partition successfully resized." |
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69 | ||
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70 | # Restart dphys-swapfile service if it exists | |
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71 | if systemctl list-units | grep -q dphys-swapfile ; then | |
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72 | if systemctl is-enabled dphys-swapfile ; then | |
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73 | logger -t "rc.firstboot" "Restarting dphys-swapfile" | |
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74 | systemctl restart dphys-swapfile | |
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75 | fi | |
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76 | fi | |
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