47 lines
1.0 KiB
Bash
Executable File
47 lines
1.0 KiB
Bash
Executable File
#!/bin/sh
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set -e
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# Determine partition and hard drive paths
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UUID=$(/usr/bin/awk '{print substr($2,6)}' /etc/crypttab)
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PART=$(/sbin/blkid -U ${UUID})
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DISK=${PART%?}
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DEV=$(/usr/bin/basename ${DISK})
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# No resizing with less than 10k unused blocks
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BLOCKS_FREE=$(/usr/bin/awk -v dev="${DEV}" '{if ($0 ~ dev "$") blocks = $3} {if ($0 ~ dev "[0-9]") blocks -= $3} END {print blocks}' /proc/partitions)
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[ ${BLOCKS_FREE} -lt 10240 ] && exit 0
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# Resize physical partition
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# Force busybox fdisk as util-linux fdisk breaks subsequent partx command
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cat <<EOF | /bin/busybox fdisk ${DISK} || /bin/true
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d
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2
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n
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p
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2
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t
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2
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8e
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w
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EOF
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# Re-read partition table
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/usr/sbin/partx -u ${PART}
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# Resize dmcrypt and LVM PV
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/sbin/cryptsetup resize system
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/sbin/pvresize /dev/mapper/system
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# Create swap if it doesn't exist
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if [ ! -e /dev/vg0/swap ]; then
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/sbin/lvcreate -L 4G vg0 -n swap
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/sbin/mkswap /dev/vg0/swap
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/sbin/swapon /dev/vg0/swap
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fi
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# Extend LV and underlying filesystem
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/sbin/lvextend -l +100%FREE vg0/root
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/usr/sbin/resize2fs /dev/vg0/root
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