def get_logical_disk(bkpid, diskid):
dev = "None"
b = True
urlget = "vms/" + bkpid + "/diskattachments/"
serial = diskid[0:20]
cmd = "grep -Rlw '" + serial + "' /sys/block/*/serial|awk -F '/' '{print $4}'"
while b:
# Trying to identify VIRTIO devices
try:
path = subprocess.check_output(cmd, shell=True).replace("\n", "")
if path.startswith("vd") or path.startswith("sd"):
dev = "/dev/" + path
time.sleep(1)
except:
continue
if str(dev) != "None":
printf.INFO("Disk found using serial number")
b = False
else:
# Trying to identify devices through API
disk_service = connection.service(urlget)
for disk in disk_service.list():
dev = str(disk.logical_name)
if disk.id == diskid and str(dev) != "None":
printf.INFO("Disk found using API")
b = False
else:
dev = "None"
time.sleep(1)
return dev
def backup(self,vmid,snapid,disk_id,bkpvm):
# Se agrega el disco a la VM que tomara el backup
try:
signal.signal(signal.SIGALRM, self.handler_timeout)
signal.alarm(self.timeout_detect)
printf.INFO("Timeout is defined to %s" % self.timeout_detect)
printf.INFO("Attach snap disk to bkpvm")
self.attach_disk(bkpvm,disk_id,snapid)
# Se obtiene el nombre del dispositivo
printf.INFO("Identifying disk device, this might take a while")
dev = self.get_logical_disk(bkpvm,disk_id)
# Se obtiene el nombre del disco
diskname = self.get_disk_name(vmid,snapid,disk_id)
time.sleep(10)
signal.alarm(0)
# Se crea la image qcow que seria el backup como tal
self.create_image_bkp(dev,diskname)
# Se desactiva el disco del cual se hizo el backup
self.deactivate_disk(bkpvm,disk_id)
time.sleep(10)
# Se detacha el disco de la BKPVM
printf.INFO("Dettach snap disk of bkpvm")
self.detach_disk(bkpvm,disk_id)
except:
printf.ERROR("Time Out reached ")
self.deactivate_disk(bkpvm,disk_id)
time.sleep(10)
printf.INFO("Dettach snap disk of bkpvm")
self.detach_disk(bkpvm,disk_id)
def create_snap(idvm):
vm_service = connection.service("vms")
snapshots_service = vm_service.vm_service(idvm).snapshots_service()
snapshots_service.add(types.Snapshot(description=snapname, persist_memorystate=False))
snapid = get_snap_id(vmid)
status = get_snap_status(idvm,snapid)
printf.INFO("Trying to create snapshot of VM: " + idvm)
while str(status) == "locked":
time.sleep(10)
printf.INFO("Waiting until snapshot creation ends")
status = get_snap_status(idvm,snapid)
printf.OK("Snapshot created")
def create_snap(self,vmid,snapname,my_disk):
vm_service = self.connection.service("vms")
snapshots_service = vm_service.vm_service(vmid).snapshots_service()
snapshots_service.add(types.Snapshot(description=snapname,persist_memorystate=False, disk_attachments=[ types.DiskAttachment( disk=types.Disk( id=my_disk)) ]))
snapid = self.get_snap_id(vmid)
status = self.get_snap_status(vmid,snapid)
printf.INFO("Trying to create snapshot of VM: " + vmid)
while str(status) == "locked":
time.sleep(10)
printf.INFO("Waiting until snapshot creation ends")
status = self.get_snap_status(vmid,snapid)
printf.OK("Snapshot created")
def create_image_bkp(self,dev,diskname):
bckfiledir = self.bckdir + "/" + self.vmname + "/" + self.date
mkdir = "mkdir -p " + bckfiledir
time.sleep(5)
subprocess.call(mkdir, shell=True)
bckfile = bckfiledir + "/" + diskname + ".qcow2"
printf.INFO("Creating qcow2 file: " + bckfile)
cmd = "qemu-img convert -U -O qcow2 " + dev + " " +bckfile
printf.INFO("cmd:" + cmd)
utils=virtbkp_utils.virtbkp_utils()
thread.start_new_thread(self.run_qemu_convert,(cmd,))
utils.progress_bar_qcow(bckfile)
def delete_snap(idvm, snapid):
snap_service = connection.service("vms/" + idvm + "/snapshots/" + snapid)
snap_service.remove()
status = get_snap_status(idvm, snapid)
while str(status) != "None":
time.sleep(30)
printf.INFO("Waiting until snapshot deletion ends")
status = get_snap_status(idvm, snapid)
printf.OK("Snapshot deleted")
def backup(vmid, snapid, disk_id, bkpvm):
# Se agrega el disco a la VM que tomara el backup
printf.INFO("Attach snap disk to bkpvm")
attach_disk(bkpvm, disk_id, snapid)
# Se obtiene el nombre del dispositivo
printf.INFO("Identifying disk device, this might take a while")
dev = get_logical_disk(bkpvm, disk_id)
# Se obtiene el nombre del disco
diskname = get_disk_name(vmid, snapid, disk_id)
# Se crea la image qcow que seria el backup como tal
create_image_bkp(dev, diskname)
# Se desactiva el disco del cual se hizo el backup
deactivate_disk(bkpvm, disk_id)
time.sleep(10)
# Se detacha el disco de la BKPVM
printf.INFO("Dettach snap disk of bkpvm")
detach_disk(bkpvm, disk_id)
time.sleep(10)
def create_image_bkp(dev, diskname):
bckfiledir = bckdir + "/" + vmname + "/" + date
mkdir = "mkdir -p " + bckfiledir
subprocess.call(mkdir, shell=True)
bckfile = bckfiledir + "/" + diskname + ".qcow2"
printf.INFO("Creating qcow2 file: " + bckfile)
cmd = "qemu-img convert -O qcow2 " + dev + " " + bckfile
utils = virtbkp_utils.virtbkp_utils()
thread.start_new_thread(run_qemu_convert, (cmd, ))
utils.progress_bar_qcow(bckfile)
def main(self):
self.start()
## Parte Principal
# Se consigue el ID de la VM a la cual se hara backup y la VM donde se montaran sus discos
self.vmid = self.get_id_vm(self.vmname)
self.bkpvm = self.get_id_vm(self.bkpvm)
# Se crea el snap y se espera un rato para que termine sin problemas y pueda detectar el nombre del disco en VM de backup
self.create_snap(self.vmid, self.snapname)
#time.sleep(60)
# Se obtiene el id del snap
self.snapid = self.get_snap_id(self.vmid)
# Se obtiene el ID del disco
vm_disks = self.snap_disk_id(self.vmid, self.snapid)
for disk_id in vm_disks:
printf.INFO("Trying to create a qcow2 file of disk " + disk_id)
# Backup
self.backup(self.vmid, self.snapid, disk_id, self.bkpvm)
printf.INFO("Trying to delete snapshot of " + self.vmname)
self.delete_snap(self.vmid, self.snapid)
def main():
## Parte Principal
# Se consigue el ID de la VM a la cual se hara backup y la VM donde se montaran sus discos
global vmid
global vmname
global bkpvm
vmid = get_id_vm(vmname)
bkpvm = get_id_vm(bkpvm)
# Se crea el snap y se espera un rato para que termine sin problemas y pueda detectar el nombre del disco en VM de backup
create_snap(vmid)
#time.sleep(60)
# Se obtiene el id del snap
snapid = get_snap_id(vmid)
# Se obtiene el ID del disco
vm_disks = snap_disk_id(vmid, snapid)
for disk_id in vm_disks:
printf.INFO("Trying to create a qcow2 file of disk " + disk_id)
# Backup
backup(vmid, snapid, disk_id, bkpvm)
printf.INFO("Trying to delete snapshot of " + vmname)
delete_snap(vmid, snapid)
