def post(self, request, pname, command=None):
pool = self._validate_pool(pname, request)
if (command is not None and command != 'status'):
e_msg = ('Unknown balance command: %s' % command)
handle_exception(Exception(e_msg), request)
with self._handle_exception(request):
disk = Disk.objects.filter(pool=pool)[0]
ps = self._balance_status(pool, disk)
if (command == 'status'):
return Response(PoolBalanceSerializer(ps).data)
force = request.DATA.get('force', False)
if ((PoolBalance.objects.filter(pool=pool,
status__regex=r'(started|running)')
.exists())):
if (force):
p = PoolBalance.objects.filter(
pool=pool,
status__regex=r'(started|running)').order_by('-id')[0]
p.status = 'terminated'
p.save()
else:
e_msg = ('A Balance process is already running for '
'pool(%s).' % pname)
handle_exception(Exception(e_msg), request)
balance_pid = balance_start(pool, disk.name, force=force)
ps = PoolBalance(pool=pool, pid=balance_pid)
ps.save()
return Response(PoolBalanceSerializer(ps).data)
def post(self, request, pname, command=None):
pool = self._validate_pool(pname, request)
if (command is not None and command != 'status'):
e_msg = ('Unknown balance command: %s' % command)
handle_exception(Exception(e_msg), request)
with self._handle_exception(request):
disk = Disk.objects.filter(pool=pool)[0]
ps = self._balance_status(pool, disk)
if (command == 'status'):
return Response(PoolBalanceSerializer(ps).data)
force = request.data.get('force', False)
if ((PoolBalance.objects.filter(pool=pool,
status__regex=r'(started|running)')
.exists())):
if (force):
p = PoolBalance.objects.filter(
pool=pool,
status__regex=r'(started|running)').order_by('-id')[0]
p.status = 'terminated'
p.save()
else:
e_msg = ('A Balance process is already running for '
'pool(%s).' % pname)
handle_exception(Exception(e_msg), request)
balance_pid = balance_start(pool, disk.name, force=force)
ps = PoolBalance(pool=pool, pid=balance_pid)
ps.save()
return Response(PoolBalanceSerializer(ps).data)
def put(self, request, pname, command):
"""
resize a pool.
@pname: pool's name
@command: 'add' - add a list of disks and hence expand the pool
'remove' - remove a list of disks and hence shrink the pool
"""
with self._handle_exception(request):
if pname == settings.ROOT_POOL:
e_msg = (
"Edit operations are not allowed on this Pool(%s) " "as it contains the operating system." % pname
)
handle_exception(Exception(e_msg), request)
try:
pool = Pool.objects.get(name=pname)
except:
e_msg = "Pool(%s) does not exist." % pname
handle_exception(Exception(e_msg), request)
if command == "remount":
return self._remount(request, pool)
disks = [self._validate_disk(d, request) for d in request.data.get("disks")]
num_new_disks = len(disks)
if num_new_disks == 0:
e_msg = "List of disks in the input cannot be empty."
handle_exception(Exception(e_msg), request)
dnames = [d.name for d in disks]
mount_disk = Disk.objects.filter(pool=pool)[0].name
new_raid = request.data.get("raid_level", pool.raid)
num_total_disks = Disk.objects.filter(pool=pool).count() + num_new_disks
usage = pool_usage("/%s/%s" % (settings.MNT_PT, pool.name))
# free_percent = (usage[2]/usage[0]) * 100
free_percent = (usage[2] * 100) / usage[0]
threshold_percent = self.ADD_THRESHOLD * 100
if command == "add":
for d in disks:
if d.pool is not None:
e_msg = (
"Disk(%s) cannot be added to this Pool(%s) "
"because it belongs to another pool(%s)" % (d.name, pool.name, d.pool.name)
)
handle_exception(Exception(e_msg), request)
if d.btrfs_uuid is not None:
e_msg = (
"Disk(%s) has a BTRFS filesystem from the "
"past. If you really like to add it, wipe it "
"from the Storage -> Disks screen of the "
"web-ui" % d.name
)
handle_exception(Exception(e_msg), request)
if new_raid not in self.SUPPORTED_MIGRATIONS[pool.raid]:
e_msg = "Pool migration from %s to %s is not supported." % (pool.raid, new_raid)
handle_exception(Exception(e_msg), request)
if PoolBalance.objects.filter(pool=pool, status__regex=r"(started|running)").exists():
e_msg = (
"A Balance process is already running for this "
"pool(%s). Resize is not supported during a "
"balance process." % pool.name
)
handle_exception(Exception(e_msg), request)
if free_percent < threshold_percent:
e_msg = (
"Resize is only supported when there is at least "
"%d percent free space available. But currently "
"only %d percent is free. Remove some data and "
"try again." % (threshold_percent, free_percent)
)
handle_exception(Exception(e_msg), request)
if new_raid != pool.raid:
if (pool.raid in ("single", "raid0")) and new_raid in ("raid1", "raid10"):
cur_num_disks = num_total_disks - num_new_disks
if num_new_disks < cur_num_disks:
e_msg = (
"For single/raid0 to raid1/raid10 "
"conversion, at least as many as present "
"number of disks must be added. %d "
"disks are provided, but at least %d are "
"required." % (num_new_disks, cur_num_disks)
)
handle_exception(Exception(e_msg), request)
resize_pool(pool, mount_disk, dnames)
balance_pid = balance_start(pool, mount_disk, convert=new_raid)
ps = PoolBalance(pool=pool, pid=balance_pid)
ps.save()
pool.raid = new_raid
for d_o in disks:
d_o.pool = pool
d_o.save()
elif command == "remove":
if new_raid != pool.raid:
e_msg = "Raid configuration cannot be changed while " "removing disks"
handle_exception(Exception(e_msg), request)
for d in disks:
if d.pool is None or d.pool != pool:
e_msg = "Disk(%s) cannot be removed because it does " "not belong to this Pool(%s)" % (
d.name,
pool.name,
)
handle_exception(Exception(e_msg), request)
remaining_disks = Disk.objects.filter(pool=pool).count() - num_new_disks
if pool.raid in ("raid0", "single"):
e_msg = "Disks cannot be removed from a pool with this " "raid(%s) configuration" % pool.raid
handle_exception(Exception(e_msg), request)
if pool.raid in ("raid5", "raid6"):
e_msg = "Disk removal is not supported for pools with " "raid5/6 configuration"
handle_exception(Exception(e_msg), request)
if pool.raid == "raid10":
if num_new_disks != 2:
e_msg = (
"Only two disks can be removed at once from "
"this pool because of its raid "
"configuration(%s)" % pool.raid
)
handle_exception(Exception(e_msg), request)
elif remaining_disks < 4:
e_msg = (
"Disks cannot be removed from this pool "
"because its raid configuration(%s) "
"requires a minimum of 4 disks" % pool.raid
)
handle_exception(Exception(e_msg), request)
elif pool.raid == "raid1":
if num_new_disks != 1:
e_msg = (
"Only one disk can be removed at once from "
"this pool because of its raid "
"configuration(%s)" % pool.raid
)
handle_exception(Exception(e_msg), request)
elif remaining_disks < 2:
e_msg = (
"Disks cannot be removed from this pool "
"because its raid configuration(%s) "
"requires a minimum of 2 disks" % pool.raid
)
handle_exception(Exception(e_msg), request)
threshold_percent = 100 - threshold_percent
if free_percent < threshold_percent:
e_msg = (
"Removing disks is only supported when there is "
"at least %d percent free space available. But "
"currently only %d percent is free. Remove some "
"data and try again." % (threshold_percent, free_percent)
)
handle_exception(Exception(e_msg), request)
resize_pool(pool, mount_disk, dnames, add=False)
balance_pid = balance_start(pool, mount_disk)
ps = PoolBalance(pool=pool, pid=balance_pid)
ps.save()
for d in disks:
d.pool = None
d.save()
else:
e_msg = "command(%s) is not supported." % command
handle_exception(Exception(e_msg), request)
usage = pool_usage("/%s/%s" % (settings.MNT_PT, pool.name))
pool.size = usage[0]
pool.save()
return Response(PoolInfoSerializer(pool).data)
def put(self, request, pname, command):
"""
resize a pool.
@pname: pool's name
@command: 'add' - add a list of disks and hence expand the pool
'remove' - remove a list of disks and hence shrink the pool
"""
with self._handle_exception(request):
if (pname == settings.ROOT_POOL):
e_msg = ('Edit operations are not allowed on this Pool(%s) '
'as it contains the operating system.' % pname)
handle_exception(Exception(e_msg), request)
try:
pool = Pool.objects.get(name=pname)
except:
e_msg = ('Pool(%s) does not exist.' % pname)
handle_exception(Exception(e_msg), request)
if (command == 'remount'):
return self._remount(request, pool)
disks = [self._validate_disk(d, request) for d in
request.data.get('disks')]
num_new_disks = len(disks)
if (num_new_disks == 0):
e_msg = ('List of disks in the input cannot be empty.')
handle_exception(Exception(e_msg), request)
dnames = [d.name for d in disks]
mount_disk = Disk.objects.filter(pool=pool)[0].name
new_raid = request.data.get('raid_level', pool.raid)
num_total_disks = (Disk.objects.filter(pool=pool).count() +
num_new_disks)
usage = pool_usage('/%s/%s' % (settings.MNT_PT, pool.name))
# free_percent = (usage[2]/usage[0]) * 100
free_percent = (usage[2]* 100)/usage[0]
threshold_percent = self.ADD_THRESHOLD * 100
if (command == 'add'):
for d in disks:
if (d.pool is not None):
e_msg = ('Disk(%s) cannot be added to this Pool(%s) '
'because it belongs to another pool(%s)' %
(d.name, pool.name, d.pool.name))
handle_exception(Exception(e_msg), request)
if (d.btrfs_uuid is not None):
e_msg = ('Disk(%s) has a BTRFS filesystem from the '
'past. If you really like to add it, wipe it '
'from the Storage -> Disks screen of the '
'web-ui' % d.name)
handle_exception(Exception(e_msg), request)
if (new_raid not in self.SUPPORTED_MIGRATIONS[pool.raid]):
e_msg = ('Pool migration from %s to %s is not supported.'
% (pool.raid, new_raid))
handle_exception(Exception(e_msg), request)
if (PoolBalance.objects.filter(
pool=pool,
status__regex=r'(started|running)').exists()):
e_msg = ('A Balance process is already running for this '
'pool(%s). Resize is not supported during a '
'balance process.' % pool.name)
handle_exception(Exception(e_msg), request)
if (free_percent < threshold_percent):
e_msg = ('Resize is only supported when there is at least '
'%d percent free space available. But currently '
'only %d percent is free. Remove some data and '
'try again.' % (threshold_percent, free_percent))
handle_exception(Exception(e_msg), request)
if (new_raid != pool.raid):
if (((pool.raid in ('single', 'raid0')) and
new_raid in ('raid1', 'raid10'))):
cur_num_disks = num_total_disks - num_new_disks
if (num_new_disks < cur_num_disks):
e_msg = ('For single/raid0 to raid1/raid10 '
'conversion, at least as many as present '
'number of disks must be added. %d '
'disks are provided, but at least %d are '
'required.' % (num_new_disks,
cur_num_disks))
handle_exception(Exception(e_msg), request)
resize_pool(pool, mount_disk, dnames)
balance_pid = balance_start(pool, mount_disk, convert=new_raid)
ps = PoolBalance(pool=pool, pid=balance_pid)
ps.save()
pool.raid = new_raid
for d_o in disks:
d_o.pool = pool
d_o.save()
elif (command == 'remove'):
if (new_raid != pool.raid):
e_msg = ('Raid configuration cannot be changed while '
'removing disks')
handle_exception(Exception(e_msg), request)
for d in disks:
if (d.pool is None or d.pool != pool):
e_msg = ('Disk(%s) cannot be removed because it does '
'not belong to this Pool(%s)' %
(d.name, pool.name))
handle_exception(Exception(e_msg), request)
remaining_disks = (Disk.objects.filter(pool=pool).count() -
num_new_disks)
if (pool.raid in ('raid0', 'single',)):
e_msg = ('Disks cannot be removed from a pool with this '
'raid(%s) configuration' % pool.raid)
handle_exception(Exception(e_msg), request)
if (pool.raid in ('raid5', 'raid6',)):
e_msg = ('Disk removal is not supported for pools with '
'raid5/6 configuration')
handle_exception(Exception(e_msg), request)
if (pool.raid == 'raid10'):
if (num_new_disks != 2):
e_msg = ('Only two disks can be removed at once from '
'this pool because of its raid '
'configuration(%s)' % pool.raid)
handle_exception(Exception(e_msg), request)
elif (remaining_disks < 4):
e_msg = ('Disks cannot be removed from this pool '
'because its raid configuration(%s) '
'requires a minimum of 4 disks' % pool.raid)
handle_exception(Exception(e_msg), request)
elif (pool.raid == 'raid1'):
if (num_new_disks != 1):
e_msg = ('Only one disk can be removed at once from '
'this pool because of its raid '
'configuration(%s)' % pool.raid)
handle_exception(Exception(e_msg), request)
elif (remaining_disks < 2):
e_msg = ('Disks cannot be removed from this pool '
'because its raid configuration(%s) '
'requires a minimum of 2 disks' % pool.raid)
handle_exception(Exception(e_msg), request)
threshold_percent = 100 - threshold_percent
if (free_percent < threshold_percent):
e_msg = ('Removing disks is only supported when there is '
'at least %d percent free space available. But '
'currently only %d percent is free. Remove some '
'data and try again.' %
(threshold_percent, free_percent))
handle_exception(Exception(e_msg), request)
resize_pool(pool, mount_disk, dnames, add=False)
balance_pid = balance_start(pool, mount_disk)
ps = PoolBalance(pool=pool, pid=balance_pid)
ps.save()
for d in disks:
d.pool = None
d.save()
else:
e_msg = ('command(%s) is not supported.' % command)
handle_exception(Exception(e_msg), request)
usage = pool_usage('/%s/%s' % (settings.MNT_PT, pool.name))
pool.size = usage[0]
pool.save()
return Response(PoolInfoSerializer(pool).data)
def put(self, request, pname, command):
"""
resize a pool.
@pname: pool's name
@command: 'add' - add a list of disks and hence expand the pool
'remove' - remove a list of disks and hence shrink the pool
"""
with self._handle_exception(request):
if (pname == settings.ROOT_POOL):
e_msg = ('Edit operations are not allowed on this Pool(%s) '
'as it contains the operating system.' % pname)
handle_exception(Exception(e_msg), request)
try:
pool = Pool.objects.get(name=pname)
except:
e_msg = ('Pool(%s) does not exist.' % pname)
handle_exception(Exception(e_msg), request)
if (command == 'remount'):
return self._remount(request, pool)
disks = [
self._validate_disk(d, request)
for d in request.data.get('disks')
]
num_new_disks = len(disks)
if (num_new_disks == 0):
e_msg = ('List of disks in the input cannot be empty.')
handle_exception(Exception(e_msg), request)
dnames = [d.name for d in disks]
mount_disk = Disk.objects.filter(pool=pool)[0].name
new_raid = request.data.get('raid_level', pool.raid)
num_total_disks = (Disk.objects.filter(pool=pool).count() +
num_new_disks)
usage = pool_usage('/%s/%s' % (settings.MNT_PT, pool.name))
# free_percent = (usage[2]/usage[0]) * 100
free_percent = (usage[2] * 100) / usage[0]
threshold_percent = self.ADD_THRESHOLD * 100
if (command == 'add'):
for d in disks:
if (d.pool is not None):
e_msg = ('Disk(%s) cannot be added to this Pool(%s) '
'because it belongs to another pool(%s)' %
(d.name, pool.name, d.pool.name))
handle_exception(Exception(e_msg), request)
if (d.btrfs_uuid is not None):
e_msg = ('Disk(%s) has a BTRFS filesystem from the '
'past. If you really like to add it, wipe it '
'from the Storage -> Disks screen of the '
'web-ui' % d.name)
handle_exception(Exception(e_msg), request)
if (new_raid not in self.SUPPORTED_MIGRATIONS[pool.raid]):
e_msg = ('Pool migration from %s to %s is not supported.' %
(pool.raid, new_raid))
handle_exception(Exception(e_msg), request)
if (PoolBalance.objects.filter(
pool=pool,
status__regex=r'(started|running)').exists()):
e_msg = ('A Balance process is already running for this '
'pool(%s). Resize is not supported during a '
'balance process.' % pool.name)
handle_exception(Exception(e_msg), request)
if (free_percent < threshold_percent):
e_msg = ('Resize is only supported when there is at least '
'%d percent free space available. But currently '
'only %d percent is free. Remove some data and '
'try again.' % (threshold_percent, free_percent))
handle_exception(Exception(e_msg), request)
if (new_raid != pool.raid):
if (((pool.raid in ('single', 'raid0'))
and new_raid in ('raid1', 'raid10'))):
cur_num_disks = num_total_disks - num_new_disks
if (num_new_disks < cur_num_disks):
e_msg = ('For single/raid0 to raid1/raid10 '
'conversion, at least as many as present '
'number of disks must be added. %d '
'disks are provided, but at least %d are '
'required.' %
(num_new_disks, cur_num_disks))
handle_exception(Exception(e_msg), request)
resize_pool(pool, mount_disk, dnames)
balance_pid = balance_start(pool, mount_disk, convert=new_raid)
ps = PoolBalance(pool=pool, pid=balance_pid)
ps.save()
pool.raid = new_raid
for d_o in disks:
d_o.pool = pool
d_o.save()
elif (command == 'remove'):
if (new_raid != pool.raid):
e_msg = ('Raid configuration cannot be changed while '
'removing disks')
handle_exception(Exception(e_msg), request)
for d in disks:
if (d.pool is None or d.pool != pool):
e_msg = ('Disk(%s) cannot be removed because it does '
'not belong to this Pool(%s)' %
(d.name, pool.name))
handle_exception(Exception(e_msg), request)
remaining_disks = (Disk.objects.filter(pool=pool).count() -
num_new_disks)
if (pool.raid in (
'raid0',
'single',
)):
e_msg = ('Disks cannot be removed from a pool with this '
'raid(%s) configuration' % pool.raid)
handle_exception(Exception(e_msg), request)
if (pool.raid in (
'raid5',
'raid6',
)):
e_msg = ('Disk removal is not supported for pools with '
'raid5/6 configuration')
handle_exception(Exception(e_msg), request)
if (pool.raid == 'raid10'):
if (num_new_disks != 2):
e_msg = ('Only two disks can be removed at once from '
'this pool because of its raid '
'configuration(%s)' % pool.raid)
handle_exception(Exception(e_msg), request)
elif (remaining_disks < 4):
e_msg = ('Disks cannot be removed from this pool '
'because its raid configuration(%s) '
'requires a minimum of 4 disks' % pool.raid)
handle_exception(Exception(e_msg), request)
elif (pool.raid == 'raid1'):
if (num_new_disks != 1):
e_msg = ('Only one disk can be removed at once from '
'this pool because of its raid '
'configuration(%s)' % pool.raid)
handle_exception(Exception(e_msg), request)
elif (remaining_disks < 2):
e_msg = ('Disks cannot be removed from this pool '
'because its raid configuration(%s) '
'requires a minimum of 2 disks' % pool.raid)
handle_exception(Exception(e_msg), request)
threshold_percent = 100 - threshold_percent
if (free_percent < threshold_percent):
e_msg = ('Removing disks is only supported when there is '
'at least %d percent free space available. But '
'currently only %d percent is free. Remove some '
'data and try again.' %
(threshold_percent, free_percent))
handle_exception(Exception(e_msg), request)
resize_pool(pool, mount_disk, dnames, add=False)
balance_pid = balance_start(pool, mount_disk)
ps = PoolBalance(pool=pool, pid=balance_pid)
ps.save()
for d in disks:
d.pool = None
d.save()
else:
e_msg = ('command(%s) is not supported.' % command)
handle_exception(Exception(e_msg), request)
usage = pool_usage('/%s/%s' % (settings.MNT_PT, pool.name))
pool.size = usage[0]
pool.save()
return Response(PoolInfoSerializer(pool).data)
