Exemplo n.º 1
0
def import_shares(pool, request):
    disk = Disk.objects.filter(pool=pool)[0].name
    shares = [s.name for s in Share.objects.filter(pool=pool)]
    shares_d = shares_info('%s%s' % (settings.MNT_PT, pool.name))
    for s in shares:
        if (s not in shares_d):
            Share.objects.get(pool=pool, name=s).delete()
    for s in shares_d:
        if (s in shares):
            share = Share.objects.get(name=s)
            share.qgroup = shares_d[s]
            rusage, eusage = share_usage(pool, share.qgroup)
            ts = datetime.utcnow().replace(tzinfo=utc)
            if (rusage != share.rusage or eusage != share.eusage):
                share.rusage = rusage
                share.eusage = eusage
                su = ShareUsage(name=s, r_usage=rusage, e_usage=eusage,
                                ts=ts)
                su.save()
            else:
                try:
                    su = ShareUsage.objects.filter(name=s).latest('id')
                    su.ts = ts
                    su.count += 1
                except ShareUsage.DoesNotExist:
                    su = ShareUsage(name=s, r_usage=rusage,
                                    e_usage=eusage, ts=ts)
                finally:
                    su.save()
            share.save()
            continue
        try:
            cshare = Share.objects.get(name=s)
            cshares_d = shares_info('%s%s' % (settings.MNT_PT,
                                              cshare.pool.name))
            if (s in cshares_d):
                e_msg = ('Another pool(%s) has a Share with this same '
                         'name(%s) as this pool(%s). This configuration is not supported.'
                         ' You can delete one of them manually with this command: '
                         'btrfs subvol delete %s[pool name]/%s' %
                         (cshare.pool.name, s, pool.name, settings.MNT_PT, s))
                handle_exception(Exception(e_msg), request)
            else:
                cshare.pool = pool
                cshare.qgroup = shares_d[s]
                cshare.size = pool.size
                cshare.subvol_name = s
                cshare.rusage, cshare.eusage = share_usage(pool, cshare.qgroup)
                cshare.save()
        except Share.DoesNotExist:
            pqid = qgroup_create(pool)
            update_quota(pool, pqid, pool.size * 1024)
            nso = Share(pool=pool, qgroup=shares_d[s], pqgroup=pqid, name=s,
                        size=pool.size, subvol_name=s)
            nso.save()
        mount_share(nso, '%s%s' % (settings.MNT_PT, s))
Exemplo n.º 2
0
def import_shares(pool, request):
    disk = Disk.objects.filter(pool=pool)[0].name
    shares = [s.name for s in Share.objects.filter(pool=pool)]
    shares_d = shares_info(pool)
    for s in shares:
        if (s not in shares_d):
            Share.objects.get(pool=pool, name=s).delete()
    for s in shares_d:
        if (s in shares):
            share = Share.objects.get(name=s)
            share.qgroup = shares_d[s]
            rusage, eusage = share_usage(pool, share.qgroup)
            ts = datetime.utcnow().replace(tzinfo=utc)
            if (rusage != share.rusage or eusage != share.eusage):
                share.rusage = rusage
                share.eusage = eusage
                su = ShareUsage(name=s, r_usage=rusage, e_usage=eusage,
                                ts=ts)
                su.save()
            else:
                try:
                    su = ShareUsage.objects.filter(name=s).latest('id')
                    su.ts = ts
                    su.count += 1
                except ShareUsage.DoesNotExist:
                    su = ShareUsage(name=s, r_usage=rusage,
                                    e_usage=eusage, ts=ts)
                finally:
                    su.save()
            share.save()
            continue
        try:
            cshare = Share.objects.get(name=s)
            cshares_d = shares_info('%s%s' % (settings.MNT_PT,
                                              cshare.pool.name))
            if (s in cshares_d):
                e_msg = ('Another pool(%s) has a Share with this same '
                         'name(%s) as this pool(%s). This configuration is not supported.'
                         ' You can delete one of them manually with this command: '
                         'btrfs subvol delete %s[pool name]/%s' %
                         (cshare.pool.name, s, pool.name, settings.MNT_PT, s))
                handle_exception(Exception(e_msg), request)
            else:
                cshare.pool = pool
                cshare.qgroup = shares_d[s]
                cshare.size = pool.size
                cshare.subvol_name = s
                cshare.rusage, cshare.eusage = share_usage(pool, cshare.qgroup)
                cshare.save()
        except Share.DoesNotExist:
            pqid = qgroup_create(pool)
            update_quota(pool, pqid, pool.size * 1024)
            nso = Share(pool=pool, qgroup=shares_d[s], pqgroup=pqid, name=s,
                        size=pool.size, subvol_name=s)
            nso.save()
        mount_share(nso, '%s%s' % (settings.MNT_PT, s))
Exemplo n.º 3
0
def btrfs_share_scan():
    pools = btrfs_pool_scan()
    shares = []
    for pool in pools:
        info = shares_info(pool)
        for i in range(len(info.keys())):
            share = {}
            share["name"] = info.keys()[i]
            share["subvol_name"] = info.keys()[i]
            share["group"] = info[info.keys()[i]]
            share["pool"] = pool
            qid = qgroup_id(pool, share["subvol_name"])
            cur_rusage, cur_eusage = share_usage(pool, qid)
            share["rusage"] = cur_rusage
            share["eusage"] = cur_eusage
            share["pqgroup"] = "xxx"
            # print qgroup_info(pool)
            shares.append(share)
    return shares
Exemplo n.º 4
0
def btrfs_share_scan():
	pools = btrfs_pool_scan()
	shares = []
	for pool in pools:
		info = shares_info(pool)
		for i in range(len(info.keys())):
			share = {}
			share["name"] = info.keys()[i]
			share["subvol_name"] = info.keys()[i]
			share["group"] = info[info.keys()[i]]
			share["pool"] = pool
			qid = qgroup_id(pool, share["subvol_name"])
			cur_rusage, cur_eusage = share_usage(pool, qid)
			share["rusage"] = cur_rusage
			share["eusage"] = cur_eusage
			share["pqgroup"] = "xxx"
			# print qgroup_info(pool)
			shares.append(share)
	return shares
Exemplo n.º 5
0
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))
Exemplo n.º 6
0
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))
Exemplo n.º 7
0
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)
    # 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:
            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)
            share.qgroup = shares_in_pool[s_in_pool]
            rusage, eusage, pqgroup_rusage, pqgroup_eusage = \
                volume_usage(pool, share.qgroup, share.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 pool quota id for use in db Share object creation.
            pqid = qgroup_create(pool)
            update_quota(pool, pqid, pool.size * 1024)
            rusage, eusage, pqgroup_rusage, pqgroup_eusage = \
                volume_usage(pool, shares_in_pool[s_in_pool], pqid)
            nso = Share(pool=pool,
                        qgroup=shares_in_pool[s_in_pool],
                        pqgroup=pqid,
                        name=s_in_pool,
                        size=pool.size,
                        subvol_name=s_in_pool,
                        rusage=rusage,
                        eusage=eusage,
                        pqgroup_rusage=pqgroup_rusage,
                        pqgroup_eusage=pqgroup_eusage)
            nso.save()
            update_shareusage_db(s_in_pool, rusage, eusage)
            mount_share(nso, '%s%s' % (settings.MNT_PT, s_in_pool))
Exemplo n.º 8
0
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:
            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 = settings.MODEL_DEFS['pqgroup']
            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)
                    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.
            pqid = qgroup_create(pool)
            update_quota(pool, pqid, pool.size * 1024)
            rusage, eusage, pqgroup_rusage, pqgroup_eusage = \
                volume_usage(pool, shares_in_pool[s_in_pool], pqid)
            nso = Share(pool=pool,
                        qgroup=shares_in_pool[s_in_pool],
                        pqgroup=pqid,
                        name=s_in_pool,
                        size=pool.size,
                        subvol_name=s_in_pool,
                        rusage=rusage,
                        eusage=eusage,
                        pqgroup_rusage=pqgroup_rusage,
                        pqgroup_eusage=pqgroup_eusage)
            nso.save()
            update_shareusage_db(s_in_pool, rusage, eusage)
            mount_share(nso, '%s%s' % (settings.MNT_PT, s_in_pool))