linux-blockutils

node-linux-blockutils

Node.js wrapper for Linux lsblk utility to read information on available block devices

Usage

var blockutils = require('linux-blockutils');

getBlockInfo(options, callback)

getBlockInfo parses the output from the util-linux lsblk command and returns an array of objects describing the block devices in the system. Options is an object with zero or more of the following options:

• ignoredev - (string) regexp of devices to ignore
• ignoremajor - array of device major numbers to ignore
• onlyStandard - (boolean) only parse "disk" and "part" entries
• lsblk - (string) - full path to lsblk binary (defaults to '/bin/lsblk')

Example - get all devices:

var blk = require('linux-blockutils');

blk.getBlockInfo({}, function(err,json) {
  if (err) {
    console.log("ERROR:" + err);
  } else {
    console.log(JSON.stringify(json,null,"  "));
  }
});

Example - ignore sdb, sdc, and loop0:

var blk = require('linux-blockutils');

blk.getBlockInfo({"ignoredev":"^(sd[bc]|loop0)"}, function(err,json) {
  if (err) {
    console.log("ERROR:" + err);
  } else {
    console.log(JSON.stringify(json,null,"  "));
  }
});

Example - ignore all loop and cdrom devices (major #7 and #11):

var blk = require('linux-blockutils');

blk.getBlockInfo({"ignoremajor": [7,11]}, function(err,json) {
  if (err) {
    console.log("ERROR:" + err);
  } else {
    console.log(JSON.stringify(json,null,"  "));
  }
});