50 lines
1.4 KiB
Bash
Executable File
50 lines
1.4 KiB
Bash
Executable File
#!/bin/bash
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# chkconfig: - 99 10
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# description: extend root
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set -e
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extend_root(){
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ROOT_PART="$(findmnt / -o source -n)" # /dev/mmcblk0p3
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ROOT_DEV="/dev/$(lsblk -no pkname "$ROOT_PART")" # /dev/mmcblk0
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PART_NUM="$(echo "$ROOT_PART" | grep -o "[[:digit:]]*$")" # 3
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PART_INFO=$(parted "$ROOT_DEV" -ms unit s p)
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# BYT;
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# /dev/mmcblk0:31116288s:sd/mmc:512:512:msdos:SD SC16G:;
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# 1:8192s:593919s:585728s:fat16::boot, lba;
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# 2:593920s:1593343s:999424s:linux-swap(v1)::;
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# 3:1593344s:31116287s:29522944s:ext4::;
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LAST_PART_NUM=$(echo "$PART_INFO" | tail -n 1 | cut -f 1 -d:) # 3
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PART_START=$(echo "$PART_INFO" | grep "^${PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g') # 1593344
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PART_END=$(echo "$PART_INFO" | grep "^${PART_NUM}" | cut -f 3 -d: | sed 's/[^0-9]//g') # XXXX < 31116288
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ROOT_END=$(echo "$PART_INFO" | grep "^/dev"| cut -f 2 -d: | sed 's/[^0-9]//g') # 31116288
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((ROOT_END--)) # 31116287
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if [ $PART_END -lt $ROOT_END ]; then
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fdisk "$ROOT_DEV" <<EOF
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p
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d
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$PART_NUM
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n
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p
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$PART_NUM
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$PART_START
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p
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w
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EOF
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resize2fs $ROOT_PART
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echo "Extend $ROOT_PART finished." >> /var/log/extend-root.log
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else
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echo "Already the largest! Do not need extend any more!" >> /var/log/extend-root.log
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fi
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return 0
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}
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if extend_root; then
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rm -f /etc/rc.d/init.d/extend-root.sh
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else
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echo "Fail to root!" >> /var/log/extend-root.log
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fi
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