TISbackup/libtisbackup/backup_vmdk.py
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#!/usr/bin/python
# -*- coding: utf-8 -*-
# -----------------------------------------------------------------------
# This file is part of TISBackup
#
# TISBackup is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# TISBackup is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with TISBackup. If not, see <http://www.gnu.org/licenses/>.
#
# -----------------------------------------------------------------------
import atexit
import getpass
from datetime import date, datetime, timedelta
import pyVmomi
import requests
from pyVim.connect import Disconnect, SmartConnect
from pyVmomi import vim, vmodl
# Disable HTTPS verification warnings.
from requests.packages import urllib3
from .common import *
urllib3.disable_warnings()
import os
import re
import tarfile
import time
import xml.etree.ElementTree as ET
from stat import *
class backup_vmdk(backup_generic):
type = "esx-vmdk"
required_params = backup_generic.required_params + ["esxhost", "password_file", "server_name"]
optional_params = backup_generic.optional_params + ["esx_port", "prefix_clone", "create_ovafile", "halt_vm"]
esx_port = 443
prefix_clone = "clone-"
create_ovafile = "no"
halt_vm = "no"
def make_compatible_cookie(self, client_cookie):
cookie_name = client_cookie.split("=", 1)[0]
cookie_value = client_cookie.split("=", 1)[1].split(";", 1)[0]
cookie_path = client_cookie.split("=", 1)[1].split(";", 1)[1].split(";", 1)[0].lstrip()
cookie_text = " " + cookie_value + "; $" + cookie_path
# Make a cookie
cookie = dict()
cookie[cookie_name] = cookie_text
return cookie
def download_file(self, url, local_filename, cookie, headers):
r = requests.get(url, stream=True, headers=headers, cookies=cookie, verify=False)
with open(local_filename, "wb") as f:
for chunk in r.iter_content(chunk_size=1024 * 1024 * 64):
if chunk:
f.write(chunk)
f.flush()
return local_filename
def export_vmdks(self, vm):
HttpNfcLease = vm.ExportVm()
try:
infos = HttpNfcLease.info
device_urls = infos.deviceUrl
vmdks = []
for device_url in device_urls:
deviceId = device_url.key
deviceUrlStr = device_url.url
diskFileName = vm.name.replace(self.prefix_clone, "") + "-" + device_url.targetId
diskUrlStr = deviceUrlStr.replace("*", self.esxhost)
# diskLocalPath = './' + diskFileName
cookie = self.make_compatible_cookie(si._stub.cookie)
headers = {"Content-Type": "application/octet-stream"}
self.logger.debug("[%s] exporting disk: %s" % (self.server_name, diskFileName))
self.download_file(diskUrlStr, diskFileName, cookie, headers)
vmdks.append({"filename": diskFileName, "id": deviceId})
finally:
HttpNfcLease.Complete()
return vmdks
def create_ovf(self, vm, vmdks):
ovfDescParams = vim.OvfManager.CreateDescriptorParams()
ovf = si.content.ovfManager.CreateDescriptor(vm, ovfDescParams)
root = ET.fromstring(ovf.ovfDescriptor)
new_id = list(root[0][1].attrib.values())[0][1:3]
ovfFiles = []
for vmdk in vmdks:
old_id = vmdk["id"][1:3]
id = vmdk["id"].replace(old_id, new_id)
ovfFiles.append(vim.OvfManager.OvfFile(size=os.path.getsize(vmdk["filename"]), path=vmdk["filename"], deviceId=id))
ovfDescParams = vim.OvfManager.CreateDescriptorParams()
ovfDescParams.ovfFiles = ovfFiles
ovf = si.content.ovfManager.CreateDescriptor(vm, ovfDescParams)
ovf_filename = vm.name + ".ovf"
self.logger.debug("[%s] creating ovf file: %s" % (self.server_name, ovf_filename))
with open(ovf_filename, "w") as f:
f.write(ovf.ovfDescriptor)
return ovf_filename
def create_ova(self, vm, vmdks, ovf_filename):
ova_filename = vm.name + ".ova"
vmdks.insert(0, {"filename": ovf_filename, "id": "false"})
self.logger.debug("[%s] creating ova file: %s" % (self.server_name, ova_filename))
with tarfile.open(ova_filename, "w") as tar:
for vmdk in vmdks:
tar.add(vmdk["filename"])
os.unlink(vmdk["filename"])
return ova_filename
def clone_vm(self, vm):
task = self.wait_task(
vm.CreateSnapshot_Task(
name="backup", description="Automatic backup " + datetime.now().strftime("%Y-%m-%d %H:%M:%s"), memory=False, quiesce=True
)
)
snapshot = task.info.result
prefix_vmclone = self.prefix_clone
clone_name = prefix_vmclone + vm.name
datastore = "[%s]" % vm.datastore[0].name
vmx_file = vim.vm.FileInfo(logDirectory=None, snapshotDirectory=None, suspendDirectory=None, vmPathName=datastore)
config = vim.vm.ConfigSpec(
name=clone_name, memoryMB=vm.summary.config.memorySizeMB, numCPUs=vm.summary.config.numCpu, files=vmx_file
)
hosts = datacenter.hostFolder.childEntity
resource_pool = hosts[0].resourcePool
self.wait_task(vmFolder.CreateVM_Task(config=config, pool=resource_pool))
new_vm = [x for x in vmFolder.childEntity if x.name == clone_name][0]
controller = vim.vm.device.VirtualDeviceSpec()
controller.operation = vim.vm.device.VirtualDeviceSpec.Operation.add
controller.device = vim.vm.device.VirtualLsiLogicController(busNumber=0, sharedBus="noSharing")
controller.device.key = 0
i = 0
vm_devices = []
clone_folder = "%s/" % "/".join(new_vm.summary.config.vmPathName.split("/")[:-1])
for device in vm.config.hardware.device:
if device.__class__.__name__ == "vim.vm.device.VirtualDisk":
cur_vers = int(re.findall(r"\d{3,6}", device.backing.fileName)[0])
if cur_vers == 1:
source = device.backing.fileName.replace("-000001", "")
else:
source = device.backing.fileName.replace("%d." % cur_vers, "%d." % (cur_vers - 1))
dest = clone_folder + source.split("/")[-1]
disk_spec = vim.VirtualDiskManager.VirtualDiskSpec(diskType="sparseMonolithic", adapterType="ide")
self.wait_task(si.content.virtualDiskManager.CopyVirtualDisk_Task(sourceName=source, destName=dest, destSpec=disk_spec))
# self.wait_task(si.content.virtualDiskManager.ShrinkVirtualDisk_Task(dest))
diskfileBacking = vim.vm.device.VirtualDisk.FlatVer2BackingInfo()
diskfileBacking.fileName = dest
diskfileBacking.diskMode = "persistent"
vdisk_spec = vim.vm.device.VirtualDeviceSpec()
vdisk_spec.operation = vim.vm.device.VirtualDeviceSpec.Operation.add
vdisk_spec.device = vim.vm.device.VirtualDisk(capacityInKB=10000, controllerKey=controller.device.key)
vdisk_spec.device.key = 0
vdisk_spec.device.backing = diskfileBacking
vdisk_spec.device.unitNumber = i
vm_devices.append(vdisk_spec)
i += 1
vm_devices.append(controller)
config.deviceChange = vm_devices
self.wait_task(new_vm.ReconfigVM_Task(config))
self.wait_task(snapshot.RemoveSnapshot_Task(removeChildren=True))
return new_vm
def wait_task(self, task):
while task.info.state in ["queued", "running"]:
time.sleep(2)
self.logger.debug("[%s] %s", self.server_name, task.info.descriptionId)
return task
def do_backup(self, stats):
try:
dest_dir = os.path.join(self.backup_dir, "%s" % self.backup_start_date)
if not os.path.isdir(dest_dir):
if not self.dry_run:
os.makedirs(dest_dir)
else:
print('mkdir "%s"' % dest_dir)
else:
raise Exception("backup destination directory already exists : %s" % dest_dir)
os.chdir(dest_dir)
user_esx, password_esx, null = open(self.password_file).read().split("\n")
global si
si = SmartConnect(host=self.esxhost, user=user_esx, pwd=password_esx, port=self.esx_port)
if not si:
raise Exception("Could not connect to the specified host using specified " "username and password")
atexit.register(Disconnect, si)
content = si.RetrieveContent()
for child in content.rootFolder.childEntity:
if hasattr(child, "vmFolder"):
global vmFolder, datacenter
datacenter = child
vmFolder = datacenter.vmFolder
vmList = vmFolder.childEntity
for vm in vmList:
if vm.name == self.server_name:
vm_is_off = vm.summary.runtime.powerState == "poweredOff"
if str2bool(self.halt_vm):
vm.ShutdownGuest()
vm_is_off = True
if vm_is_off:
vmdks = self.export_vmdks(vm)
ovf_filename = self.create_ovf(vm, vmdks)
else:
new_vm = self.clone_vm(vm)
vmdks = self.export_vmdks(new_vm)
ovf_filename = self.create_ovf(vm, vmdks)
self.wait_task(new_vm.Destroy_Task())
if str2bool(self.create_ovafile):
ova_filename = self.create_ova(vm, vmdks, ovf_filename) # noqa : F841
if str2bool(self.halt_vm):
vm.PowerOnVM()
if os.path.exists(dest_dir):
for file in os.listdir(dest_dir):
stats["written_bytes"] += os.stat(file)[ST_SIZE]
stats["total_files_count"] += 1
stats["written_files_count"] += 1
stats["total_bytes"] = stats["written_bytes"]
else:
stats["written_bytes"] = 0
stats["backup_location"] = dest_dir
stats["log"] = "XVA backup from %s OK, %d bytes written" % (self.server_name, stats["written_bytes"])
stats["status"] = "OK"
except BaseException as e:
stats["status"] = "ERROR"
stats["log"] = str(e)
raise
register_driver(backup_vmdk)