76 lines
1.6 KiB
JavaScript
76 lines
1.6 KiB
JavaScript
const fs = require('fs')
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const common = require('./common')
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const BLOCKCHAIN_DIR = process.env.BLOCKCHAIN_DIR
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const MOUNT_POINT = BLOCKCHAIN_DIR
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module.exports = { prepareVolume }
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const logger = common.logger
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function isMounted() {
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return fs.existsSync(MOUNT_POINT)
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}
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function isFormatted(volumePath) {
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const res = common.es(`file --dereference -s ${volumePath}`).trim()
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return res !== `${volumePath}: data`
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}
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function formatVolume(volumePath) {
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if (isFormatted(volumePath)) {
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logger.info('Volume is already formatted.')
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return
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}
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logger.info('Formatting...')
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common.es(`sudo mkfs.ext4 ${volumePath}`)
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}
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function mountVolume(volumePath) {
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if (isMounted()) {
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logger.info('Volume is already mounted.')
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return
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}
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logger.info('Mounting...')
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common.es(`sudo mkdir -p ${MOUNT_POINT}`)
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common.es(`sudo mount -o discard,defaults ${volumePath} ${MOUNT_POINT}`)
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common.es(
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`echo ${volumePath} ${MOUNT_POINT} ext4 defaults,nofail,discard 0 0 | sudo tee -a /etc/fstab`,
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)
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}
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function locateVolume() {
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const res = common.es('ls /dev/disk/by-id/*')
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const lines = res.trim().split('\n')
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if (lines.length > 1) {
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logger.error('More than one volume present, cannot prepare.')
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return null
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}
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if (lines.length === 0) {
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logger.error('No available volumes. You might need to attach one.')
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return null
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}
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return lines[0].trim()
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}
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function prepareVolume() {
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if (isMounted()) {
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logger.info('Volume is already mounted.')
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return true
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}
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const volumePath = locateVolume()
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if (!volumePath) return false
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formatVolume(volumePath)
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mountVolume(volumePath)
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return true
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}
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