def show_pool_type_help(self, pool_type):
""" Show pool type help to the user """
msg = ""
if pool_type == "None":
msg = _("'None' pool will use ZFS on a single selected disk.")
elif pool_type == "Stripe":
msg = _("When created together, with equal capacity, ZFS "
"space-balancing makes a span act like a RAID0 stripe. "
"The space is added together. Provided all the devices "
"are of the same size, the stripe behavior will "
"continue regardless of fullness level. If "
"devices/vdevs are not equally sized, then they will "
"fill mostly equally until one device/vdev is full.")
elif pool_type == "Mirror":
msg = _("A mirror consists of two or more devices, all data "
"will be written to all member devices. Cnchi will "
"try to group devices in groups of two.")
elif pool_type.startswith("RAID-Z"):
msg = _("ZFS implements RAID-Z, a variation on standard "
"RAID-5. ZFS supports three levels of RAID-Z which "
"provide varying levels of redundancy in exchange for "
"decreasing levels of usable storage. The types are "
"named RAID-Z1 through RAID-Z3 based on the number of "
"parity devices in the array and the number of disks "
"which can fail while the pool remains operational.")
if msg:
show.message(self.get_main_window(), msg)
def show_pool_type_help(self, pool_type):
""" Show pool type help to the user """
ptype = pool_type if 'RAID-Z' not in pool_type else 'RAID-Z'
help_text = {
"None":
_("'None' pool will use ZFS on a single selected disk."),
"Stripe":
_("When created together, with equal capacity, ZFS "
"space-balancing makes a span act like a RAID0 stripe. "
"The space is added together. Provided all the devices "
"are of the same size, the stripe behavior will "
"continue regardless of fullness level. If "
"devices/vdevs are not equally sized, then they will "
"fill mostly equally until one device/vdev is full."),
"Mirror":
_("A mirror consists of two or more devices, all data "
"will be written to all member devices. Cnchi will "
"try to group devices in groups of two."),
"RAID-Z":
_("ZFS implements RAID-Z, a variation on standard "
"RAID-5. ZFS supports three levels of RAID-Z which "
"provide varying levels of redundancy in exchange for "
"decreasing levels of usable storage. The types are "
"named RAID-Z1 through RAID-Z3 based on the number of "
"parity devices in the array and the number of disks "
"which can fail while the pool remains operational.")
}
if ptype in help_text:
show.message(self.get_main_window(), help_text[ptype])
def check_pool_type(self, show_warning=False):
""" Check that the user has selected the right number
of devices for the selected pool type """
num_drives = 0
msg = ""
pool_type = self.zfs_options["pool_type"]
for row in self.device_list_store:
if row[COL_USE_ACTIVE]:
num_drives += 1
if pool_type == "None":
is_ok = num_drives == 1
if not is_ok:
msg = _("You must select one drive")
elif pool_type in ["Stripe", "Mirror"]:
is_ok = num_drives > 1
if not is_ok:
msg = _("For the {0} pool_type, you must select at least two "
"drives").format(pool_type)
elif "RAID" in pool_type:
pool_types = {
'RAID-Z': {'min_drives': 3, 'min_parity_drives': 1},
'RAID-Z2': {'min_drives': 4, 'min_parity_drives': 2},
'RAID-Z3': {'min_drives': 5, 'min_parity_drives': 3}
}
min_drives = pool_types[pool_type]['min_drives']
min_parity_drives = pool_types[pool_type]['min_parity_drives']
if num_drives < min_drives:
is_ok = False
msg = _("You must select at least {0} drives")
msg = msg.format(min_drives)
else:
num = math.log2(num_drives - min_parity_drives)
if not is_int(num):
msg = _("For the {0} pool type, you must use a 'power of "
"two' (2,4,8,...) plus the appropriate number of "
"drives for the parity. RAID-Z = 1 disk, RAIDZ-2 "
"= 2 disks, and so on.")
msg = msg.format(pool_type, min_parity_drives)
is_ok = False
else:
is_ok = True
else:
# If we get here, something is wrong.
msg = _('An unknown error occurred while processing chosen ZFS options.')
is_ok = False
if not is_ok and show_warning:
show.message(self.get_main_window(), msg)
return is_ok
def check_pool_type(self, show_warning=False):
""" Check that the user has selected the right number
of devices for the selected pool type """
num_drives = 0
msg = ""
pool_type = self.zfs_options["pool_type"]
for row in self.device_list_store:
if row[COL_USE_ACTIVE]:
num_drives += 1
if pool_type == "None":
if num_drives == 1:
is_ok = True
else:
is_ok = False
msg = _("You must select one drive")
elif pool_type in ["Stripe", "Mirror"]:
if num_drives > 1:
is_ok = True
else:
is_ok = False
msg = _("For the {0} pool_type, you must select at least two " "drives").format(pool_type)
elif "RAID" in pool_type:
min_drives = 3
min_parity_drives = 1
if pool_type == "RAID-Z2":
min_drives = 4
min_parity_drives = 2
elif pool_type == "RAID-Z3":
min_drives = 5
min_parity_drives = 3
if num_drives < min_drives:
is_ok = False
msg = _("You must select at least {0} drives")
msg = msg.format(min_drives)
else:
num = math.log2(num_drives - min_parity_drives)
if not is_int(num):
msg = _(
"For the {0} pool type, you must use a 'power of "
"two' (2,4,8,...) plus the appropriate number of "
"drives for the parity. RAID-Z = 1 disk, RAIDZ-2 "
"= 2 disks, and so on."
)
msg = msg.format(pool_type, min_parity_drives)
else:
is_ok = True
if not is_ok and show_warning:
show.message(self.get_main_window(), msg)
return is_ok
def on_force_4k_help_btn_clicked(self, widget):
""" Show 4k help to the user """
msg = _("Advanced Format (AF) is a new disk format which natively "
"uses a 4,096 byte instead of 512 byte sector size. To "
"maintain compatibility with legacy systems AF disks emulate "
"a sector size of 512 bytes. By default, ZFS will "
"automatically detect the sector size of the drive. This "
"combination will result in poorly aligned disk access which "
"will greatly degrade the pool performance. If that might be "
"your case, you can force ZFS to use a sector size of 4,096 "
"bytes by selecting this option.")
show.message(self.get_main_window(), msg)
def on_force_4k_help_btn_clicked(self, widget):
""" Show 4k help to the user """
msg = _("Advanced Format (AF) is a new disk format which natively "
"uses a 4,096 byte instead of 512 byte sector size. To "
"maintain compatibility with legacy systems AF disks emulate "
"a sector size of 512 bytes. By default, ZFS will "
"automatically detect the sector size of the drive. This "
"combination will result in poorly aligned disk access which "
"will greatly degrade the pool performance. If that might be "
"your case, you can force ZFS to use a sector size of 4,096 "
"bytes by selecting this option.")
show.message(self.get_main_window(), msg)
def manage_events_from_cb_queue(self):
try:
event = self.callback_queue.get_nowait()
except queue.Empty:
event = ()
if len(event) > 0:
if event[0] == "percent":
self.progress_bar.set_fraction(event[1])
elif event[0] == "finished":
log.debug(event[1])
self.set_message(self.install_ok)
response = show.message(self.install_ok)
if response == Gtk.ResponseType.YES:
# TODO: This needs testing
#subp = subprocess.Popen(['reboot'], stdout=subprocess.PIPE)
with misc.raised_privileges():
subp = subprocess.Popen(['shutdown', '-r', 'now'])
else:
tmp_files = [".setup-running", ".km-running", "setup-pacman-running", "setup-mkinitcpio-running", ".tz-running", ".setup" ]
for t in tmp_files:
p = os.path.join("/tmp", t)
if os.path.exists(p):
os.remove(p)
Gtk.main_quit()
self.exit_button.show()
return False
elif event[0] == "error":
show.fatal_error(event[1])
else:
log.debug(event[1])
self.set_message(event[1])
# remove old messages from the event queue
with self.callback_queue.mutex:
self.callback_queue.queue.clear()
return True
def check_pool_type(self, show_warning=False):
""" Check that the user has selected the right number
of devices for the selected pool type """
num_drives = 0
msg = ""
pool_type = self.zfs_options["pool_type"]
for row in self.device_list_store:
if row[COL_USE_ACTIVE]:
num_drives += 1
if pool_type == "None":
is_ok = num_drives == 1
if not is_ok:
msg = _("You must select one drive")
elif pool_type in ["Stripe", "Mirror"]:
is_ok = num_drives > 1
if not is_ok:
msg = _("For the {0} pool_type, you must select at least two "
"drives").format(pool_type)
elif "RAID" in pool_type:
pool_types = {
'RAID-Z': {
'min_drives': 3,
'min_parity_drives': 1
},
'RAID-Z2': {
'min_drives': 4,
'min_parity_drives': 2
},
'RAID-Z3': {
'min_drives': 5,
'min_parity_drives': 3
}
}
min_drives = pool_types[pool_type]['min_drives']
min_parity_drives = pool_types[pool_type]['min_parity_drives']
if num_drives < min_drives:
is_ok = False
msg = _("You must select at least {0} drives")
msg = msg.format(min_drives)
else:
num = math.log2(num_drives - min_parity_drives)
if not is_int(num):
msg = _("For the {0} pool type, you must use a 'power of "
"two' (2,4,8,...) plus the appropriate number of "
"drives for the parity. RAID-Z = 1 disk, RAIDZ-2 "
"= 2 disks, and so on.")
msg = msg.format(pool_type, min_parity_drives)
is_ok = False
else:
is_ok = True
else:
# If we get here, something is wrong.
msg = _(
'An unknown error occurred while processing chosen ZFS options.'
)
is_ok = False
if not is_ok and show_warning:
show.message(self.get_main_window(), msg)
return is_ok
