def _create(self, share, snap_name, request, uvisible, snap_type,
writable):
if (Snapshot.objects.filter(share=share, name=snap_name).exists()):
e_msg = ('Snapshot(%s) already exists for the Share(%s).' %
(snap_name, share.name))
handle_exception(Exception(e_msg), request)
snap_size = 0
qgroup_id = '0/na'
if (snap_type == 'replication'):
writable = False
add_snap(share.pool, share.subvol_name, snap_name, writable)
snap_id = share_id(share.pool, snap_name)
qgroup_id = ('0/%s' % snap_id)
qgroup_assign(qgroup_id, share.pqgroup,
('%s/%s' % (settings.MNT_PT, share.pool.name)))
snap_size, eusage = share_usage(share.pool, qgroup_id)
s = Snapshot(share=share,
name=snap_name,
real_name=snap_name,
size=snap_size,
qgroup=qgroup_id,
uvisible=uvisible,
snap_type=snap_type,
writable=writable)
s.save()
return Response(SnapshotSerializer(s).data)
def _create(self, share, snap_name, request, uvisible,
snap_type, writable):
if (Snapshot.objects.filter(share=share, name=snap_name).exists()):
# Note e_msg is consumed by replication/util.py create_snapshot()
e_msg = ('Snapshot ({}) already exists for '
'the share ({}).').format(snap_name, share.name)
handle_exception(Exception(e_msg), request)
snap_size = 0
qgroup_id = '0/na'
if (snap_type == 'replication'):
writable = False
add_snap(share.pool, share.subvol_name, snap_name, writable)
snap_id = share_id(share.pool, snap_name)
qgroup_id = ('0/%s' % snap_id)
if share.pqgroup is not settings.MODEL_DEFS['pqgroup']:
pool_mnt_pt = '{}{}'.format(settings.MNT_PT, share.pool.name)
qgroup_assign(qgroup_id, share.pqgroup, pool_mnt_pt)
snap_size, eusage = volume_usage(share.pool, qgroup_id)
s = Snapshot(share=share, name=snap_name, real_name=snap_name,
size=snap_size, qgroup=qgroup_id,
uvisible=uvisible, snap_type=snap_type,
writable=writable)
# The following share.save() was informed by test_snapshot.py
share.save()
s.save()
return Response(SnapshotSerializer(s).data)
def _create(self, share, snap_name, pool_device, request, uvisible,
snap_type, writable):
if (Snapshot.objects.filter(share=share, name=snap_name).exists()):
e_msg = ('Snapshot(%s) already exists for the Share(%s).' %
(snap_name, share.name))
handle_exception(Exception(e_msg), request)
snap_size = 0
qgroup_id = '0/na'
if (snap_type != 'receiver'):
if (snap_type == 'replication'):
writable = False
add_snap(share.pool, pool_device, share.subvol_name,
snap_name, readonly=not writable)
snap_id = share_id(share.pool, pool_device, snap_name)
qgroup_id = ('0/%s' % snap_id)
qgroup_assign(qgroup_id, share.pqgroup, ('%s/%s' % (settings.MNT_PT, share.pool.name)))
snap_size, eusage = share_usage(share.pool, pool_device,
qgroup_id)
s = Snapshot(share=share, name=snap_name, real_name=snap_name,
size=snap_size, qgroup=qgroup_id,
uvisible=uvisible, snap_type=snap_type,
writable=writable)
s.save()
return Response(SnapshotSerializer(s).data)
def _create(self, share, snap_name, request, uvisible, snap_type, writable):
if Snapshot.objects.filter(share=share, name=snap_name).exists():
# Note e_msg is consumed by replication/util.py create_snapshot()
e_msg = ("Snapshot ({}) already exists for the share ({}).").format(
snap_name, share.name
)
handle_exception(Exception(e_msg), request)
snap_size = 0
qgroup_id = "0/na"
if snap_type == "replication":
writable = False
add_snap(share, snap_name, writable)
snap_id = share_id(share.pool, snap_name)
qgroup_id = "0/{}".format(snap_id)
if share.pqgroup != settings.MODEL_DEFS["pqgroup"]:
qgroup_assign(qgroup_id, share.pqgroup, share.pool.mnt_pt)
snap_size, eusage = volume_usage(share.pool, qgroup_id)
s = Snapshot(
share=share,
name=snap_name,
real_name=snap_name,
size=snap_size,
qgroup=qgroup_id,
uvisible=uvisible,
snap_type=snap_type,
writable=writable,
)
# The following share.save() was informed by test_snapshot.py
share.save()
s.save()
return Response(SnapshotSerializer(s).data)
def import_shares(pool, request):
# Establish known shares/subvols within our db for the given pool:
shares_in_pool_db = [s.name for s in Share.objects.filter(pool=pool)]
# Find the actual/current shares/subvols within the given pool:
# Limited to Rockstor relevant subvols ie shares and clones.
shares_in_pool = shares_info(pool)
# List of pool's share.pqgroups so we can remove inadvertent duplication.
# All pqgroups are removed when quotas are disabled, combined with a part
# refresh we could have duplicates within the db.
share_pqgroups_used = []
# Delete db Share object if it is no longer found on disk.
for s_in_pool_db in shares_in_pool_db:
if s_in_pool_db not in shares_in_pool:
logger.debug("Removing, missing on disk, share db entry ({}) from "
"pool ({}).".format(s_in_pool_db, pool.name))
Share.objects.get(pool=pool, name=s_in_pool_db).delete()
# Check if each share in pool also has a db counterpart.
for s_in_pool in shares_in_pool:
logger.debug("---- Share name = {}.".format(s_in_pool))
if s_in_pool in shares_in_pool_db:
logger.debug("Updating pre-existing same pool db share entry.")
# We have a pool db share counterpart so retrieve and update it.
share = Share.objects.get(name=s_in_pool, pool=pool)
# Initially default our pqgroup value to db default of '-1/-1'
# This way, unless quotas are enabled, all pqgroups will be
# returned to db default.
pqgroup = PQGROUP_DEFAULT
if share.pool.quotas_enabled:
# Quotas are enabled on our pool so we can validate pqgroup.
if (share.pqgroup == pqgroup or not share.pqgroup_exist
or share.pqgroup in share_pqgroups_used):
# we have a void '-1/-1' or non existent pqgroup or
# this pqgroup has already been seen / used in this pool.
logger.debug(
"#### replacing void, non-existent, or duplicate pqgroup."
)
pqgroup = qgroup_create(pool)
if pqgroup != PQGROUP_DEFAULT:
update_quota(pool, pqgroup, share.size * 1024)
share_pqgroup_assign(pqgroup, share)
else:
# Our share's pqgroup looks OK so use it.
pqgroup = share.pqgroup
# Record our use of this pqgroup to spot duplicates later.
share_pqgroups_used.append(deepcopy(share.pqgroup))
if share.pqgroup != pqgroup:
# we need to update our share.pqgroup
share.pqgroup = pqgroup
share.save()
share.qgroup = shares_in_pool[s_in_pool]
rusage, eusage, pqgroup_rusage, pqgroup_eusage = volume_usage(
pool, share.qgroup, pqgroup)
if (rusage != share.rusage or eusage != share.eusage
or pqgroup_rusage != share.pqgroup_rusage
or pqgroup_eusage != share.pqgroup_eusage):
share.rusage = rusage
share.eusage = eusage
share.pqgroup_rusage = pqgroup_rusage
share.pqgroup_eusage = pqgroup_eusage
update_shareusage_db(s_in_pool, rusage, eusage)
else:
update_shareusage_db(s_in_pool, rusage, eusage, UPDATE_TS)
share.save()
continue
try:
logger.debug("No prior entries in scanned pool trying all pools.")
# Test (Try) for an existing system wide Share db entry.
cshare = Share.objects.get(name=s_in_pool)
# Get a list of Rockstor relevant subvols (ie shares and clones)
# for the prior existing db share entry's pool.
cshares_d = shares_info(cshare.pool)
if s_in_pool in cshares_d:
e_msg = ("Another pool ({}) has a share with this same "
"name ({}) as this pool ({}). This configuration "
"is not supported. You can delete one of them "
"manually with the following command: "
'"btrfs subvol delete {}[pool name]/{}" WARNING this '
"will remove the entire contents of that "
"subvolume.").format(cshare.pool.name, s_in_pool,
pool.name, settings.MNT_PT,
s_in_pool)
handle_exception(Exception(e_msg), request)
else:
# Update the prior existing db share entry previously
# associated with another pool.
logger.debug("Updating prior db entry from another pool.")
cshare.pool = pool
cshare.qgroup = shares_in_pool[s_in_pool]
cshare.size = pool.size
cshare.subvol_name = s_in_pool
(
cshare.rusage,
cshare.eusage,
cshare.pqgroup_rusage,
cshare.pqgroup_eusage,
) = volume_usage(pool, cshare.qgroup, cshare.pqgroup)
cshare.save()
update_shareusage_db(s_in_pool, cshare.rusage, cshare.eusage)
except Share.DoesNotExist:
logger.debug("Db share entry does not exist - creating.")
# We have a share on disk that has no db counterpart so create one.
# Retrieve new pool quota id for use in db Share object creation.
# As the replication receive share is 'special' we tag it as such.
replica = False
share_name = s_in_pool
if re.match(".snapshot", s_in_pool) is not None:
# We have an initial replication share, non snap in .snapshots.
# We could change it's name here but still a little mixing
# of name and subvol throughout project.
replica = True
logger.debug("Initial receive quirk-subvol found: Importing "
"as share and setting replica flag.")
qid = shares_in_pool[s_in_pool]
pqid = qgroup_create(pool)
if pqid != PQGROUP_DEFAULT:
update_quota(pool, pqid, pool.size * 1024)
qgroup_assign(qid, pqid, pool.mnt_pt)
rusage, eusage, pqgroup_rusage, pqgroup_eusage = volume_usage(
pool, qid, pqid)
nso = Share(
pool=pool,
qgroup=qid,
pqgroup=pqid,
name=share_name,
size=pool.size,
subvol_name=s_in_pool,
rusage=rusage,
eusage=eusage,
pqgroup_rusage=pqgroup_rusage,
pqgroup_eusage=pqgroup_eusage,
replica=replica,
)
nso.save()
update_shareusage_db(s_in_pool, rusage, eusage)
mount_share(nso, "{}{}".format(settings.MNT_PT, s_in_pool))
def import_shares(pool, request):
# Establish known shares/subvols within our db for the given pool:
shares_in_pool_db = [s.name for s in Share.objects.filter(pool=pool)]
# Find the actual/current shares/subvols within the given pool:
# Limited to Rockstor relevant subvols ie shares and clones.
shares_in_pool = shares_info(pool)
# List of pool's share.pqgroups so we can remove inadvertent duplication.
# All pqgroups are removed when quotas are disabled, combined with a part
# refresh we could have duplicates within the db.
share_pqgroups_used = []
# Delete db Share object if it is no longer found on disk.
for s_in_pool_db in shares_in_pool_db:
if s_in_pool_db not in shares_in_pool:
logger.debug('Removing, missing on disk, share db entry ({}) from '
'pool ({}).'.format(s_in_pool_db, pool.name))
Share.objects.get(pool=pool, name=s_in_pool_db).delete()
# Check if each share in pool also has a db counterpart.
for s_in_pool in shares_in_pool:
logger.debug('---- Share name = {}.'.format(s_in_pool))
if s_in_pool in shares_in_pool_db:
logger.debug('Updating pre-existing same pool db share entry.')
# We have a pool db share counterpart so retrieve and update it.
share = Share.objects.get(name=s_in_pool, pool=pool)
# Initially default our pqgroup value to db default of '-1/-1'
# This way, unless quotas are enabled, all pqgroups will be
# returned to db default.
pqgroup = PQGROUP_DEFAULT
if share.pool.quotas_enabled:
# Quotas are enabled on our pool so we can validate pqgroup.
if share.pqgroup == pqgroup or not share.pqgroup_exist \
or share.pqgroup in share_pqgroups_used:
# we have a void '-1/-1' or non existent pqgroup or
# this pqgroup has already been seen / used in this pool.
logger.debug('#### replacing void, non-existent, or '
'duplicate pqgroup.')
pqgroup = qgroup_create(pool)
if pqgroup is not PQGROUP_DEFAULT:
update_quota(pool, pqgroup, share.size * 1024)
share_pqgroup_assign(pqgroup, share)
else:
# Our share's pqgroup looks OK so use it.
pqgroup = share.pqgroup
# Record our use of this pqgroup to spot duplicates later.
share_pqgroups_used.append(deepcopy(share.pqgroup))
if share.pqgroup != pqgroup:
# we need to update our share.pqgroup
share.pqgroup = pqgroup
share.save()
share.qgroup = shares_in_pool[s_in_pool]
rusage, eusage, pqgroup_rusage, pqgroup_eusage = \
volume_usage(pool, share.qgroup, pqgroup)
if (rusage != share.rusage or eusage != share.eusage or
pqgroup_rusage != share.pqgroup_rusage or
pqgroup_eusage != share.pqgroup_eusage):
share.rusage = rusage
share.eusage = eusage
share.pqgroup_rusage = pqgroup_rusage
share.pqgroup_eusage = pqgroup_eusage
update_shareusage_db(s_in_pool, rusage, eusage)
else:
update_shareusage_db(s_in_pool, rusage, eusage, UPDATE_TS)
share.save()
continue
try:
logger.debug('No prior entries in scanned pool trying all pools.')
# Test (Try) for an existing system wide Share db entry.
cshare = Share.objects.get(name=s_in_pool)
# Get a list of Rockstor relevant subvols (ie shares and clones)
# for the prior existing db share entry's pool.
cshares_d = shares_info(cshare.pool)
if s_in_pool in cshares_d:
e_msg = ('Another pool ({}) has a share with this same '
'name ({}) as this pool ({}). This configuration '
'is not supported. You can delete one of them '
'manually with the following command: '
'"btrfs subvol delete {}[pool name]/{}" WARNING this '
'will remove the entire contents of that '
'subvolume.').format(cshare.pool.name, s_in_pool,
pool.name, settings.MNT_PT,
s_in_pool)
handle_exception(Exception(e_msg), request)
else:
# Update the prior existing db share entry previously
# associated with another pool.
logger.debug('Updating prior db entry from another pool.')
cshare.pool = pool
cshare.qgroup = shares_in_pool[s_in_pool]
cshare.size = pool.size
cshare.subvol_name = s_in_pool
(cshare.rusage, cshare.eusage, cshare.pqgroup_rusage,
cshare.pqgroup_eusage) = volume_usage(pool, cshare.qgroup,
cshare.pqgroup)
cshare.save()
update_shareusage_db(s_in_pool, cshare.rusage, cshare.eusage)
except Share.DoesNotExist:
logger.debug('Db share entry does not exist - creating.')
# We have a share on disk that has no db counterpart so create one.
# Retrieve new pool quota id for use in db Share object creation.
# As the replication receive share is 'special' we tag it as such.
replica = False
share_name = s_in_pool
if re.match('.snapshot', s_in_pool) is not None:
# We have an initial replication share, non snap in .snapshots.
# We could change it's name here but still a little mixing
# of name and subvol throughout project.
replica = True
logger.debug('Initial receive quirk-subvol found: Importing '
'as share and setting replica flag.')
qid = shares_in_pool[s_in_pool]
pqid = qgroup_create(pool)
if pqid is not PQGROUP_DEFAULT:
update_quota(pool, pqid, pool.size * 1024)
pool_mnt_pt = '{}{}'.format(settings.MNT_PT, pool.name)
qgroup_assign(qid, pqid, pool_mnt_pt)
rusage, eusage, pqgroup_rusage, pqgroup_eusage = \
volume_usage(pool, qid, pqid)
nso = Share(pool=pool, qgroup=qid, pqgroup=pqid, name=share_name,
size=pool.size, subvol_name=s_in_pool, rusage=rusage,
eusage=eusage, pqgroup_rusage=pqgroup_rusage,
pqgroup_eusage=pqgroup_eusage,
replica=replica)
nso.save()
update_shareusage_db(s_in_pool, rusage, eusage)
mount_share(nso, '%s%s' % (settings.MNT_PT, s_in_pool))
