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# Copyright (C) 2009, 2012-2014 Red Hat, Inc.
# Copyright (C) 2009 Cole Robinson <crobinso@redhat.com>
#
# This work is licensed under the GNU GPLv2 or later.
# See the COPYING file in the top-level directory.
import os
import stat
import traceback
from gi.repository import Gtk
from gi.repository import Pango
import virtinst
from virtinst import log
from virtinst import xmlutil
from .asyncjob import vmmAsyncJob
from .baseclass import vmmGObjectUI
from .lib import uiutil
STORAGE_ROW_CONFIRM = 0
STORAGE_ROW_CANT_DELETE = 1
STORAGE_ROW_PATH = 2
STORAGE_ROW_TARGET = 3
STORAGE_ROW_ICON_SHOW = 4
STORAGE_ROW_ICON = 5
STORAGE_ROW_ICON_SIZE = 6
STORAGE_ROW_TOOLTIP = 7
class _vmmDeleteBase(vmmGObjectUI):
"""
Base class for both types of VM/device storage deleting wizards
"""
def __init__(self):
vmmGObjectUI.__init__(self, "delete.ui", "vmm-delete")
self.vm = None
self.builder.connect_signals({
"on_vmm_delete_delete_event": self.close,
"on_delete_cancel_clicked": self.close,
"on_delete_ok_clicked": self._finish_clicked_cb,
"on_delete_remove_storage_toggled": self._toggle_remove_storage,
})
self.bind_escape_key_close()
self._cleanup_on_app_close()
self.topwin.set_title(self._get_dialog_title())
self._init_state()
def _init_state(self):
_prepare_storage_list(self.widget("delete-storage-list"))
def show(self, parent, vm):
log.debug("Showing delete wizard")
self._set_vm(vm)
self._reset_state()
self.topwin.set_transient_for(parent)
self.topwin.present()
def close(self, ignore1=None, ignore2=None):
log.debug("Closing delete wizard")
self.topwin.hide()
self._set_vm(None)
return 1
def _cleanup(self):
pass
##########################
# Initialization methods #
##########################
def _set_vm(self, newvm):
oldvm = self.vm
if oldvm:
oldvm.conn.disconnect_by_obj(self)
if newvm:
newvm.conn.connect("vm-removed", self._vm_removed_cb)
self.vm = newvm
def _reset_state(self):
# Set VM name or disk.target in title'
text = self._get_dialog_text()
title_str = ("<span size='large'>%s</span>" %
xmlutil.xml_escape(text))
self.widget("header-label").set_markup(title_str)
self.topwin.resize(1, 1)
self.widget("delete-cancel").grab_focus()
# Show warning message if VM is running
vm_active = self._vm_active_status()
uiutil.set_grid_row_visible(
self.widget("delete-warn-running-vm-box"), vm_active)
# Enable storage removal by default
remove_storage_default = self._get_remove_storage_default()
self.widget("delete-remove-storage").set_active(remove_storage_default)
self.widget("delete-remove-storage").toggled()
diskdatas = self._get_disk_datas()
_populate_storage_list(self.widget("delete-storage-list"),
self.vm, self.vm.conn, diskdatas)
################
# UI listeners #
################
def _finish_clicked_cb(self, src):
self._finish()
def _vm_removed_cb(self, _conn, vm):
if self.vm == vm:
self.close()
def _toggle_remove_storage(self, src):
dodel = src.get_active()
uiutil.set_grid_row_visible(
self.widget("delete-storage-scroll"), dodel)
#########################
# finish/delete methods #
#########################
def _get_paths_to_delete(self):
del_list = self.widget("delete-storage-list")
model = del_list.get_model()
paths = []
if self.widget("delete-remove-storage").get_active():
for row in model:
if (not row[STORAGE_ROW_CANT_DELETE] and
row[STORAGE_ROW_CONFIRM]):
paths.append(row[STORAGE_ROW_PATH])
return paths
def _delete_finished_cb(self, error, details):
self.reset_finish_cursor()
if error is not None:
self.err.show_err(error, details=details)
self.close()
def _finish(self):
paths = self._get_paths_to_delete()
if paths:
title = _("Are you sure you want to delete the storage?")
message = (_("The following paths will be deleted:\n\n%s") %
"\n".join(paths))
ret = self.err.chkbox_helper(
self.config.get_confirm_delstorage,
self.config.set_confirm_delstorage,
text1=title, text2=message)
if not ret:
return
self.set_finish_cursor()
if not self._remove_device(paths):
# Don't delete storage if device removal failed
self._delete_finished_cb(None, None)
return
title, text = self._get_progress_text(paths)
progWin = vmmAsyncJob(self._async_delete, [self.vm, paths],
self._delete_finished_cb, [],
title, text, self.topwin)
progWin.run()
self._set_vm(None)
def _async_delete(self, asyncjob, vm, paths):
details = ""
storage_errors = []
try:
self._destroy_vm(vm)
conn = vm.conn.get_backend()
meter = asyncjob.get_meter()
storage_errors = self._async_delete_paths(paths, conn, meter)
self._delete_vm(vm)
vm.conn.schedule_priority_tick(pollvm=True)
except Exception as e: # pragma: no cover
error = _("Error deleting virtual machine '%(vm)s': %(error)s") % {
"vm": vm.get_name(),
"error": str(e),
}
details = "".join(traceback.format_exc())
storage_errstr = ""
for errinfo in storage_errors:
storage_errstr += "%s\n%s\n" % (errinfo[0], errinfo[1])
if not storage_errstr and not details:
return
# We had extra storage errors. If there was another error message,
# errors to it. Otherwise, build the main error around them.
if details: # pragma: no cover
details += "\n\n"
details += _("Additionally, there were errors removing"
" certain storage devices: \n")
details += storage_errstr
else:
error = _("Errors encountered while removing certain "
"storage devices.")
details = storage_errstr
if error:
asyncjob.set_error(error, details)
def _async_delete_paths(self, paths, conn, meter):
storage_errors = []
for path in paths:
try:
log.debug("Deleting path: %s", path)
meter.start(_("Deleting path '%s'") % path, None)
self._async_delete_path(conn, path, meter)
except Exception as e:
storage_errors.append((str(e),
"".join(traceback.format_exc())))
meter.end()
return storage_errors
def _async_delete_path(self, conn, path, ignore):
try:
vol = conn.storageVolLookupByPath(path)
except Exception:
vol = None
log.debug("Path '%s' is not managed. Deleting locally", path)
if vol:
vol.delete(0)
else:
os.unlink(path)
################
# Subclass API #
################
def _get_dialog_title(self):
raise NotImplementedError
def _get_dialog_text(self):
raise NotImplementedError
def _get_progress_text(self, paths):
raise NotImplementedError
def _get_disk_datas(self):
raise NotImplementedError
def _vm_active_status(self):
raise NotImplementedError
def _delete_vm(self, vm):
raise NotImplementedError
def _remove_device(self, paths):
raise NotImplementedError
def _destroy_vm(self, vm):
raise NotImplementedError
def _get_remove_storage_default(self):
raise NotImplementedError
class vmmDeleteDialog(_vmmDeleteBase):
"""
Dialog for deleting a VM and optionally its storage
"""
@classmethod
def show_instance(cls, parentobj, vm):
try:
if not cls._instance:
cls._instance = vmmDeleteDialog()
cls._instance.show(parentobj.topwin, vm)
except Exception as e: # pragma: no cover
parentobj.err.show_err(
_("Error launching delete dialog: %s") % str(e))
def _get_dialog_title(self):
return _("Delete Virtual Machine")
def _get_dialog_text(self):
return _("Delete '%(vmname)s'") % {"vmname": self.vm.get_name()}
def _get_progress_text(self, paths):
if paths:
title = _("Deleting virtual machine '%s' and selected storage "
"(this may take a while)") % self.vm.get_name()
text = title
else:
title = _("Deleting virtual machine '%s'") % self.vm.get_name()
text = title
return [title, text]
def _get_remove_storage_default(self):
return True
def _get_disk_datas(self):
return _build_diskdata_for_vm(self.vm)
def _vm_active_status(self):
vm_active = self.vm.is_active()
return vm_active
def _remove_device(self, paths):
dummy = paths
return True
def _delete_vm(self, vm):
if vm.is_persistent():
log.debug("Removing VM '%s'", vm.get_name())
vm.delete()
def _destroy_vm(self, vm):
if vm.is_active():
log.debug("Forcing VM '%s' power off.", vm.get_name())
vm.destroy()
class vmmDeleteStorage(_vmmDeleteBase):
"""
Dialog for removing a disk device from a VM and optionally deleting
its storage
"""
@staticmethod
def remove_devobj_internal(vm, err, devobj, deleting_storage=False):
log.debug("Removing device: %s", devobj)
# Define the change
try:
vm.remove_device(devobj)
except Exception as e: # pragma: no cover
err.show_err(_("Error Removing Device: %s") % str(e))
return
# Try to hot remove
detach_err = ()
try:
vm.detach_device(devobj)
except Exception as e:
log.debug("Device could not be hotUNplugged: %s", str(e))
detach_err = (str(e), "".join(traceback.format_exc()))
if not detach_err:
return True
msg = _("This change will take effect after the next guest shutdown.")
if deleting_storage:
msg += " "
msg += _("Storage will not be deleted.")
err.show_err(
_("Device could not be removed from the running machine"),
details=(detach_err[0] + "\n\n" + detach_err[1]), text2=msg,
buttons=Gtk.ButtonsType.OK,
dialog_type=Gtk.MessageType.INFO)
def __init__(self, disk):
_vmmDeleteBase.__init__(self)
self.disk = disk
def _get_dialog_title(self):
return _("Remove Disk Device")
def _get_dialog_text(self):
return _("Remove disk device '%(target)s'") % {
"target": self.disk.target}
def _get_progress_text(self, paths):
if paths:
title = _("Removing disk device '%s' and selected storage "
"(this may take a while)") % self.disk.target
else:
title = _("Removing disk device '%s'") % self.disk.target
text = title
return [title, text]
def _get_remove_storage_default(self):
return False
def _get_disk_datas(self):
return [_DiskData.from_disk(self.disk)]
def _vm_active_status(self):
return False
def _remove_device(self, paths):
deleting_storage = bool(paths)
return vmmDeleteStorage.remove_devobj_internal(
self.vm, self.err, self.disk,
deleting_storage=deleting_storage)
def _delete_vm(self, vm):
pass
def _destroy_vm(self, vm):
pass
###################
# UI init helpers #
###################
class _DiskData:
"""
Helper class to contain all info we need to decide whether we
should default to deleting a path
"""
@staticmethod
def from_disk(disk):
"""
Build _DiskData from a DeviceDisk object
"""
return _DiskData(
disk.target,
disk.get_source_path(),
disk.read_only,
disk.shareable,
disk.device in ["cdrom", "floppy"])
def __init__(self, label, path, ro, shared, is_media):
self.label = label
self.path = path
self.ro = ro
self.shared = shared
self.is_media = is_media
def _build_diskdata_for_vm(vm):
"""
Return a list of _DiskData for all VM resources the app attempts to delete
"""
diskdatas = []
for disk in vm.xmlobj.devices.disk:
diskdatas.append(_DiskData.from_disk(disk))
diskdatas.append(
_DiskData("kernel", vm.get_xmlobj().os.kernel, True, False, True))
diskdatas.append(
_DiskData("initrd", vm.get_xmlobj().os.initrd, True, False, True))
diskdatas.append(
_DiskData("dtb", vm.get_xmlobj().os.dtb, True, False, True))
return diskdatas
def _populate_storage_list(storage_list, vm, conn, diskdatas):
"""
Fill in the storage list UI from the passed list of _DiskData
"""
model = storage_list.get_model()
model.clear()
for diskdata in diskdatas:
if not diskdata.path:
continue
# There are a few pieces here
# 1) Can we even delete the storage? If not, make the checkbox
# inconsistent. self.can_delete decides this for us, and if
# we can't delete, gives us a nice message to show the user
# for that row.
#
# 2) If we can delete, do we want to delete this storage by
# default? Reasons not to, are if the storage is marked
# readonly or shareable, or is in use by another VM.
default = False
definfo = None
vol = conn.get_vol_by_path(diskdata.path)
can_del, delinfo = _can_delete(conn, vol, diskdata.path)
if can_del:
default, definfo = _do_we_default(conn, vm.get_name(), vol,
diskdata)
info = None
if not can_del:
info = delinfo
elif not default:
info = definfo
icon = "dialog-warning"
icon_size = Gtk.IconSize.LARGE_TOOLBAR
row = [default, not can_del, diskdata.path, diskdata.label,
bool(info), icon, icon_size, info]
model.append(row)
def _prepare_storage_list(storage_list):
# Checkbox, deleteable?, storage path, target (hda), icon name,
# icon size, tooltip
model = Gtk.ListStore(bool, bool, str, str, bool, str, int, str)
storage_list.set_model(model)
storage_list.set_tooltip_column(STORAGE_ROW_TOOLTIP)
confirmCol = Gtk.TreeViewColumn()
targetCol = Gtk.TreeViewColumn(_("Target"))
infoCol = Gtk.TreeViewColumn()
pathCol = Gtk.TreeViewColumn(_("Storage Path"))
pathCol.set_sizing(Gtk.TreeViewColumnSizing.AUTOSIZE)
pathCol.set_expand(True)
storage_list.append_column(confirmCol)
storage_list.append_column(pathCol)
storage_list.append_column(targetCol)
storage_list.append_column(infoCol)
chkbox = Gtk.CellRendererToggle()
chkbox.connect('toggled', _storage_item_toggled, storage_list)
confirmCol.pack_start(chkbox, False)
def sensitive_cb(column, cell, model, _iter, data):
row = model[_iter]
inconsistent = row[STORAGE_ROW_CANT_DELETE]
sensitive = not inconsistent
active = row[STORAGE_ROW_CONFIRM]
chk = column.get_cells()[0]
chk.set_property('inconsistent', inconsistent)
chk.set_property('active', active)
chk.set_property('sensitive', sensitive)
confirmCol.set_cell_data_func(chkbox, sensitive_cb)
confirmCol.set_sort_column_id(STORAGE_ROW_CANT_DELETE)
path_txt = Gtk.CellRendererText()
pathCol.pack_start(path_txt, True)
pathCol.add_attribute(path_txt, 'text', STORAGE_ROW_PATH)
pathCol.set_sort_column_id(STORAGE_ROW_PATH)
path_txt.set_property("width-chars", 50)
path_txt.set_property("ellipsize", Pango.EllipsizeMode.MIDDLE)
target_txt = Gtk.CellRendererText()
targetCol.pack_start(target_txt, False)
targetCol.add_attribute(target_txt, 'text', STORAGE_ROW_TARGET)
targetCol.set_sort_column_id(STORAGE_ROW_TARGET)
info_img = Gtk.CellRendererPixbuf()
infoCol.pack_start(info_img, False)
infoCol.add_attribute(info_img, 'visible', STORAGE_ROW_ICON_SHOW)
infoCol.add_attribute(info_img, 'icon-name', STORAGE_ROW_ICON)
infoCol.add_attribute(info_img, 'stock-size', STORAGE_ROW_ICON_SIZE)
infoCol.set_sort_column_id(STORAGE_ROW_ICON)
def _storage_item_toggled(src, index, storage_list):
active = src.get_active()
model = storage_list.get_model()
model[index][STORAGE_ROW_CONFIRM] = not active
def _can_delete(conn, vol, path):
"""Is the passed path even deleteable"""
msg = None
if vol:
# Managed storage
pool_type = vol.get_parent_pool().get_type()
if pool_type == virtinst.StoragePool.TYPE_ISCSI:
msg = _("Cannot delete iSCSI share.") # pragma: no cover
elif pool_type == virtinst.StoragePool.TYPE_SCSI:
msg = _("Cannot delete SCSI device.") # pragma: no cover
else:
if conn.is_remote():
msg = _("Cannot delete unmanaged remote storage.")
elif not os.path.exists(path):
msg = _("Path does not exist.")
elif not os.access(os.path.dirname(path), os.W_OK):
msg = _("No write access to parent directory.")
elif stat.S_ISBLK(os.stat(path)[stat.ST_MODE]): # pragma: no cover
msg = _("Cannot delete unmanaged block device.")
can_delete = bool(not msg)
return (can_delete, msg)
def _do_we_default(conn, vm_name, vol, diskdata):
""" Returns (do we delete by default?, info string if not)"""
info = []
if diskdata.ro:
info.append(_("Storage is read-only."))
elif not vol and not os.access(diskdata.path, os.W_OK):
info.append(_("No write access to path."))
if diskdata.shared:
info.append(_("Storage is marked as shareable."))
if not info and diskdata.is_media:
info.append(_("Storage is a media device."))
try:
names = virtinst.DeviceDisk.path_in_use_by(conn.get_backend(),
diskdata.path)
if len(names) > 1:
names.remove(vm_name)
namestr = "\n- ".join(names)
msg = _("Storage is in use by the following virtual machines")
msg += "\n- " + namestr
info.append(msg)
except Exception as e: # pragma: no cover
log.exception("Failed checking disk conflict: %s", str(e))
info.append(_("Failed to check disk usage conflict."))
infostr = "\n".join(info)
do_default = bool(not infostr)
return (do_default, infostr)
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