mirror of
https://github.com/virt-manager/virt-manager.git
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320 lines
11 KiB
Python
320 lines
11 KiB
Python
#
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# Copyright (C) 2014 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301 USA.
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#
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import logging
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import os
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import statvfs
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from gi.repository import GObject
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from gi.repository import Gtk
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import virtinst
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from . import uiutil
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from .baseclass import vmmGObjectUI
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class vmmAddStorage(vmmGObjectUI):
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__gsignals__ = {
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"browse-clicked": (GObject.SignalFlags.RUN_FIRST, None, [object]),
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"storage-toggled": (GObject.SignalFlags.RUN_FIRST, None, [object])
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}
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def __init__(self, conn, builder, topwin):
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vmmGObjectUI.__init__(self, "addstorage.ui", None,
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builder=builder, topwin=topwin)
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self.conn = conn
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self.builder.connect_signals({
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"on_storage_browse_clicked": self._browse_storage,
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"on_storage_select_toggled": self._toggle_storage_select,
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})
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self.top_box = self.widget("storage-box")
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def _cleanup(self):
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self.conn = None
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##########################
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# Initialization methods #
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##########################
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def _get_default_dir(self):
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return virtinst.StoragePool.get_default_dir(self.conn.get_backend())
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def _get_ideal_path_info(self, name):
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path = self._get_default_dir()
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fmt = self.conn.get_default_storage_format()
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suffix = virtinst.StorageVolume.get_file_extension_for_format(fmt)
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return (path, name, suffix or ".img")
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def _get_ideal_path(self, name):
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target, name, suffix = self._get_ideal_path_info(name)
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return os.path.join(target, name) + suffix
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def _host_disk_space(self):
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pool = self.conn.get_default_pool()
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path = self._get_default_dir()
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avail = 0
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if pool and pool.is_active():
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# Rate limit this, since it can be spammed at dialog startup time
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if pool.secs_since_last_refresh() > 10:
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pool.refresh()
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avail = int(pool.get_available())
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elif not self.conn.is_remote() and os.path.exists(path):
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vfs = os.statvfs(os.path.dirname(path))
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avail = vfs[statvfs.F_FRSIZE] * vfs[statvfs.F_BAVAIL]
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return float(avail / 1024.0 / 1024.0 / 1024.0)
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def _update_host_space(self):
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widget = self.widget("phys-hd-label")
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try:
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max_storage = self._host_disk_space()
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except:
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logging.exception("Error determining host disk space")
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widget.set_markup("")
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return
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def pretty_storage(size):
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return "%.1f GiB" % float(size)
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hd_label = (_("%s available in the default location") %
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pretty_storage(max_storage))
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hd_label = ("<span color='#484848'>%s</span>" % hd_label)
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widget.set_markup(hd_label)
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def _check_default_pool_active(self):
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default_pool = self.conn.get_default_pool()
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if default_pool and not default_pool.is_active():
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res = self.err.yes_no(_("Default pool is not active."),
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_("Storage pool '%s' is not active. "
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"Would you like to start the pool "
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"now?") % default_pool.get_name())
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if not res:
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return False
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# Try to start the pool
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try:
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default_pool.start()
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logging.info("Started pool '%s'", default_pool.get_name())
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except Exception, e:
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return self.err.show_err(_("Could not start storage_pool "
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"'%s': %s") %
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(default_pool.get_name(), str(e)))
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return True
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##############
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# Public API #
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##############
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@staticmethod
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def check_path_search(src, conn, path):
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skip_paths = src.config.get_perms_fix_ignore()
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user, broken_paths = virtinst.VirtualDisk.check_path_search(
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conn.get_backend(), path)
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for p in broken_paths[:]:
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if p in skip_paths:
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broken_paths.remove(p)
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if not broken_paths:
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return
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logging.debug("No search access for dirs: %s", broken_paths)
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resp, chkres = src.err.warn_chkbox(
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_("The emulator may not have search permissions "
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"for the path '%s'.") % path,
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_("Do you want to correct this now?"),
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_("Don't ask about these directories again."),
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buttons=Gtk.ButtonsType.YES_NO)
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if chkres:
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src.config.add_perms_fix_ignore(broken_paths)
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if not resp:
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return
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logging.debug("Attempting to correct permission issues.")
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errors = virtinst.VirtualDisk.fix_path_search_for_user(
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conn.get_backend(), path, user)
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if not errors:
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return
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errmsg = _("Errors were encountered changing permissions for the "
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"following directories:")
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details = ""
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for path, error in errors.items():
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if path not in broken_paths:
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continue
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details += "%s : %s\n" % (path, error)
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details += "\nIt is very likely the VM will fail to start up."
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logging.debug("Permission errors:\n%s", details)
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ignore, chkres = src.err.err_chkbox(errmsg, details,
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_("Don't ask about these directories again."))
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if chkres:
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src.config.add_perms_fix_ignore(errors.keys())
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def reset_state(self):
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self._update_host_space()
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self.widget("storage-create").set_active(True)
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self.widget("storage-size").set_value(20)
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self.widget("storage-entry").set_text("")
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self.widget("storage-create-box").set_sensitive(True)
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storage_tooltip = None
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can_storage = (not self.conn.is_remote() or
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self.conn.is_storage_capable())
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use_storage = self.widget("storage-select")
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storage_area = self.widget("storage-box")
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storage_area.set_sensitive(can_storage)
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if not can_storage:
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storage_tooltip = _("Connection does not support storage"
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" management.")
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use_storage.set_sensitive(True)
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storage_area.set_tooltip_text(storage_tooltip or "")
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def get_default_path(self, name, collidelist=None):
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collidelist = collidelist or []
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pool = self.conn.get_default_pool()
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default_dir = self._get_default_dir()
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def path_exists(p):
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return os.path.exists(p) or p in collidelist
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if not pool:
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# Use old generating method
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origf = os.path.join(default_dir, name + ".img")
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f = origf
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n = 1
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while path_exists(f) and n < 100:
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f = os.path.join(default_dir, name +
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"-" + str(n) + ".img")
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n += 1
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if path_exists(f):
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f = origf
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path = f
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else:
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target, ignore, suffix = self._get_ideal_path_info(name)
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# Sanitize collidelist to work with the collision checker
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newcollidelist = []
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for c in collidelist:
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if c and os.path.dirname(c) == pool.get_target_path():
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newcollidelist.append(os.path.basename(c))
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path = virtinst.StorageVolume.find_free_name(
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pool.get_backend(), name,
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suffix=suffix, collidelist=newcollidelist)
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path = os.path.join(target, path)
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return path
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def is_default_storage(self):
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return self.widget("storage-create").get_active()
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def validate_storage(self, vmname,
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path=None, device="disk", collidelist=None):
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if self.is_default_storage():
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# Make sure default pool is running
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ret = self._check_default_pool_active()
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if not ret:
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return False
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if path is None:
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if self.is_default_storage():
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path = self.get_default_path(vmname, collidelist or [])
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else:
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path = self.widget("storage-entry").get_text().strip()
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if not path and device in ["disk", "lun"]:
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return self.err.val_err(_("A storage path must be specified."))
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disk = virtinst.VirtualDisk(self.conn.get_backend())
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disk.path = path or None
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disk.device = device
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if disk.wants_storage_creation():
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pool = disk.get_parent_pool()
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size = uiutil.spin_get_helper(self.widget("storage-size"))
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sparse = False
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vol_install = virtinst.VirtualDisk.build_vol_install(
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disk.conn, os.path.basename(disk.path), pool,
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size, sparse)
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disk.set_vol_install(vol_install)
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fmt = self.conn.get_default_storage_format()
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if fmt in disk.get_vol_install().list_formats():
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logging.debug("Using default prefs format=%s for path=%s",
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fmt, disk.path)
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disk.get_vol_install().format = fmt
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else:
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logging.debug("path=%s can not use default prefs format=%s, "
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"not setting it", disk.path, fmt)
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disk.validate()
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return disk
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def validate_disk_object(self, disk):
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isfatal, errmsg = disk.is_size_conflict()
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if not isfatal and errmsg:
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# Fatal errors are reported when setting 'size'
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res = self.err.ok_cancel(_("Not Enough Free Space"), errmsg)
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if not res:
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return False
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# Disk collision
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names = disk.is_conflict_disk()
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if names:
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res = self.err.yes_no(
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_('Disk "%s" is already in use by other guests %s') %
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(disk.path, names),
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_("Do you really want to use the disk?"))
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if not res:
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return False
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self.check_path_search(self, self.conn, disk.path)
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#############
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# Listeners #
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#############
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def _browse_storage(self, ignore):
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self.emit("browse-clicked", self.widget("storage-entry"))
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def _toggle_storage_select(self, src):
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act = src.get_active()
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self.widget("storage-browse-box").set_sensitive(act)
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self.emit("storage-toggled", src)
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