def update_nfs_access_rule(self,
host_list,
share_id=None,
snapshot_id=None):
if share_id is not None:
name = os.path.join('/shares', share_id)
elif snapshot_id is not None:
name = os.path.join('/snapshots', snapshot_id)
else:
msg = _("No share/snapshot provided to update NFS rules.")
raise exception.HNASBackendException(msg=msg)
command = ['nfs-export', 'mod', '-c']
if len(host_list) == 0:
command.append('127.0.0.1')
else:
string_command = '"' + six.text_type(host_list[0])
for i in range(1, len(host_list)):
string_command += ',' + (six.text_type(host_list[i]))
string_command += '"'
command.append(string_command)
command.append(name)
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Could not update access rules for NFS export %s.") % name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def _locked_selectfs(self, op, path):
if op == 'create':
command = [
'selectfs', self.fs_name, '\n', 'ssc', '127.0.0.1',
'console-context', '--evs', self.evs_id, 'mkdir', '-p', path
]
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Failed to create directory %s.") % path
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
if op == 'delete':
command = [
'selectfs', self.fs_name, '\n', 'ssc', '127.0.0.1',
'console-context', '--evs', self.evs_id, 'rmdir', path
]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if 'DirectoryNotEmpty' in e.stderr:
LOG.debug("Share %(path)s has more snapshots.",
{'path': path})
elif 'NotFound' in e.stderr:
LOG.warning(
_LW("Attempted to delete path %s but it does "
"not exist."), path)
else:
msg = _("Failed to delete directory %s.") % path
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def test_create_share_from_snapshot_cleanup(self):
dest_path = '/snapshots/' + share_nfs['id'] + '/' + snapshot_nfs['id']
src_path = '/shares/' + share_nfs['id']
self.mock_object(driver.HitachiHNASDriver, "_check_fs_mounted",
mock.Mock())
self.mock_object(ssh.HNASSSHBackend, "vvol_create")
self.mock_object(ssh.HNASSSHBackend, "quota_add")
self.mock_object(ssh.HNASSSHBackend, "tree_clone")
self.mock_object(ssh.HNASSSHBackend, "vvol_delete")
self.mock_object(
ssh.HNASSSHBackend, "nfs_export_add",
mock.Mock(side_effect=exception.HNASBackendException(
msg='Error adding nfs export.')))
self.assertRaises(exception.HNASBackendException,
self._driver.create_share_from_snapshot, 'context',
share_nfs, snapshot_nfs)
ssh.HNASSSHBackend.vvol_create.assert_called_once_with(share_nfs['id'])
ssh.HNASSSHBackend.quota_add.assert_called_once_with(
share_nfs['id'], share_nfs['size'])
ssh.HNASSSHBackend.tree_clone.assert_called_once_with(
dest_path, src_path)
ssh.HNASSSHBackend.nfs_export_add.assert_called_once_with(
share_nfs['id'])
ssh.HNASSSHBackend.vvol_delete.assert_called_once_with(share_nfs['id'])
def cifs_allow_access(self, name, user, permission, is_snapshot=False):
command = [
'cifs-saa', 'add', '--target-label', self.fs_name, name, user,
permission
]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if 'already listed as a user' in e.stderr:
if is_snapshot:
LOG.debug(
'User %(user)s already allowed to access '
'snapshot %(snapshot)s.', {
'user': user,
'snapshot': name,
})
else:
self._update_cifs_rule(name, user, permission)
else:
entity_type = "share"
if is_snapshot:
entity_type = "snapshot"
msg = _("Could not add access of user %(user)s to "
"%(entity_type)s %(name)s.") % {
'user': user,
'name': name,
'entity_type': entity_type,
}
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def _deny_access(self, share_id, host, permission):
"""Deny access to the share.
:param share_id: ID of share that access will be denied.
:param host: Host to which access will be denied.
:param permission: permission (e.g. 'rw', 'ro') that will be denied.
"""
# check if the share exists
self._ensure_share(share_id)
# get the list that contains all the hosts allowed on the share
host_list = self.hnas.get_host_list(share_id)
if permission in ('ro', 'rw'):
host_access = host + '(' + permission + ')'
else:
msg = (_("Permission should be 'ro' or 'rw' instead "
"of %s") % permission)
raise exception.HNASBackendException(msg=msg)
# check if the host(s) is already not allowed
if host_access not in host_list:
LOG.debug("Host: %(host)s is already not allowed.", {'host': host})
else:
# remove the host on host_list
host_list.remove(host_access)
self.hnas.update_access_rule(share_id, host_list)
def _allow_access(self, share_id, host, permission='rw'):
"""Allow access to the share.
:param share_id: ID of share that access will be allowed.
:param host: Host to which access will be allowed.
:param permission: permission (e.g. 'rw', 'ro') that will be allowed.
"""
# check if the share exists
self._ensure_share(share_id)
# get the list that contains all the hosts allowed on the share
host_list = self.hnas.get_host_list(share_id)
if permission in ('ro', 'rw'):
host_access = host + '(' + permission + ')'
else:
msg = (_("Permission should be 'ro' or 'rw' instead "
"of %s") % permission)
raise exception.HNASBackendException(msg=msg)
# check if the host(s) is already allowed
if any(host in x for x in host_list):
if host_access in host_list:
LOG.debug("Host: %(host)s is already allowed.", {'host': host})
else:
# remove all the hosts with different permissions
host_list = [x for x in host_list if not x.startswith(host)]
# add the host with new permission
host_list.append(host_access)
self.hnas.update_access_rule(share_id, host_list)
else:
host_list.append(host_access)
self.hnas.update_access_rule(share_id, host_list)
def cifs_deny_access(self, name, user, is_snapshot=False):
command = [
'cifs-saa', 'delete', '--target-label', self.fs_name, name, user
]
entity_type = "share"
if is_snapshot:
entity_type = "snapshot"
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if ('not listed as a user' in e.stderr
or 'Could not delete user/group' in e.stderr):
LOG.warning(
'User %(user)s already not allowed to access '
'%(entity_type)s %(name)s.', {
'entity_type': entity_type,
'user': user,
'name': name
})
else:
msg = _("Could not delete access of user %(user)s to "
"%(entity_type)s %(name)s.") % {
'user': user,
'name': name,
'entity_type': entity_type,
}
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def deny_access(self, share_id, host, share_proto, permission):
"""Deny access to the share.
:param share_id: ID of share that access will be denied.
:param host: Host to which access will be denied.
:param share_proto: Storage protocol of share. Currently,
only NFS storage protocol is supported.
:param permission: permission (e.g. 'rw', 'ro') that will be denied.
"""
# check if the share exists
self.ensure_share(share_id, share_proto)
export = self._nfs_export_list(share_id)
# get the list that contains all the hosts allowed on the share
host_list = export[0].export_configuration
if permission in ('ro', 'rw'):
host_access = host + '(' + permission + ')'
else:
msg = (_("Permission should be 'ro' or 'rw' instead "
"of %s") % permission)
raise exception.HNASBackendException(msg=msg)
# check if the host(s) is already not allowed
if host_access not in host_list:
LOG.debug("Host: %(host)s is already not allowed.", {'host': host})
else:
# remove the host on host_list
host_list.remove(host_access)
self._update_access_rule(share_id, host_list)
def _get_export(self, name, is_snapshot=False):
if is_snapshot:
name = '/snapshots/' + name
else:
name = '/shares/' + name
command = ['nfs-export', 'list ', name]
export_list = []
try:
output, err = self._execute(command)
except processutils.ProcessExecutionError as e:
if 'does not exist' in e.stderr:
msg = _("Export %(name)s was not found in EVS "
"%(evs_id)s.") % {
'name': name,
'evs_id': self.evs_id,
}
LOG.exception(msg)
raise exception.HNASItemNotFoundException(msg=msg)
else:
msg = _("Could not list NFS exports by name %s.") % name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
items = output.split('Export name')
if items[0][0] == '\n':
items.pop(0)
for i in range(0, len(items)):
export_list.append(Export(items[i]))
return export_list
def _check_export(self, vvol_name):
export = self._nfs_export_list(vvol_name)
if (vvol_name in export[0].export_name
and self.fs_name in export[0].file_system_label):
return True
else:
msg = (_("Export %s does not exist.") % export[0].export_name)
raise exception.HNASBackendException(msg=msg)
def _check_quota(self, vvol_name):
command = ['quota', 'list', '--verbose', self.fs_name, vvol_name]
output, err = self._execute(command)
if 'No quotas matching specified filter criteria' not in output:
return True
else:
msg = (_("Virtual volume %s does not have any quota.") % vvol_name)
raise exception.HNASBackendException(msg=msg)
def mount(self):
command = ['mount', self.fs_name]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if 'file system is already mounted' not in e.stderr:
msg = _("Failed to mount filesystem %s.") % self.fs_name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def _locked_selectfs(self, op, path):
if op == 'create':
command = [
'selectfs', self.fs_name, '\n', 'ssc', '127.0.0.1',
'console-context', '--evs', self.evs_id, 'mkdir', '-p', path
]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if "Current file system invalid: VolumeNotFound" in e.stderr:
msg = _("Command to create directory %s failed due to "
"context change.") % path
LOG.debug(msg)
raise exception.HNASSSCContextChange(msg=msg)
else:
msg = _("Failed to create directory %s.") % path
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
if op == 'delete':
command = [
'selectfs', self.fs_name, '\n', 'ssc', '127.0.0.1',
'console-context', '--evs', self.evs_id, 'rmdir', path
]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if 'DirectoryNotEmpty' in e.stderr:
msg = _("Share %s has more snapshots.") % path
LOG.debug(msg)
raise exception.HNASDirectoryNotEmpty(msg=msg)
elif 'cannot remove' in e.stderr and 'NotFound' in e.stderr:
LOG.warning(
"Attempted to delete path %s but it does "
"not exist.", path)
elif 'Current file system invalid: VolumeNotFound' in e.stderr:
msg = _("Command to delete empty directory %s failed due "
"to context change.") % path
LOG.debug(msg)
raise exception.HNASSSCContextChange(msg=msg)
else:
msg = _("Failed to delete directory %s.") % path
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def nfs_export_del(self, share_id=None, snapshot_id=None):
if share_id is not None:
name = os.path.join('/shares', share_id)
elif snapshot_id is not None:
name = os.path.join('/snapshots', snapshot_id)
else:
msg = _("NFS export not specified to delete.")
raise exception.HNASBackendException(msg=msg)
command = ['nfs-export', 'del', name]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if 'does not exist' in e.stderr:
LOG.warning("Export %s does not exist on "
"backend anymore.", name)
else:
msg = _("Could not delete NFS export %s.") % name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def modify_quota(self, vvol_name, new_size):
str_quota = six.text_type(new_size) + 'G'
command = ['quota', 'mod', '--usage-limit', str_quota,
self.fs_name, vvol_name]
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Failed to update quota of vvol %(vvol)s to "
"%(quota)s.") % {'quota': str_quota, 'vvol': vvol_name}
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def vvol_create(self, vvol_name):
# create a virtual-volume inside directory
path = '/shares/' + vvol_name
command = ['virtual-volume', 'add', '--ensure', self.fs_name,
vvol_name, path]
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Failed to create vvol %s.") % vvol_name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def nfs_export_add(self, share_id):
path = '/shares/' + share_id
command = [
'nfs-export', 'add', '-S', 'disable', '-c', '127.0.0.1', path,
self.fs_name, path
]
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Could not create NFS export %s.") % share_id
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def cifs_share_add(self, share_id):
path = r'\\shares\\' + share_id
command = [
'cifs-share', 'add', '-S', 'disable', '--enable-abe',
'--nodefaultsaa', share_id, self.fs_name, path
]
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Could not create CIFS share %s.") % share_id
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def _check_vvol(self, vvol_name):
command = [
'virtual-volume', 'list', '--verbose', self.fs_name, vvol_name
]
try:
output, err = self._execute(command)
return True
except processutils.ProcessExecutionError as e:
msg = six.text_type(e)
LOG.exception(msg)
msg = (_("Virtual volume %s does not exist.") % vvol_name)
raise exception.HNASBackendException(msg=msg)
def quota_add(self, vvol_name, vvol_quota):
str_quota = six.text_type(vvol_quota) + 'G'
command = ['quota', 'add', '--usage-limit',
str_quota, '--usage-hard-limit',
'yes', self.fs_name, vvol_name]
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Failed to add %(quota)s quota to vvol "
"%(vvol)s.") % {'quota': str_quota, 'vvol': vvol_name}
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def cifs_share_del(self, name):
command = ['cifs-share', 'del', '--target-label', self.fs_name, name]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if e.exit_code == 1:
LOG.warning(
"CIFS share %s does not exist on "
"backend anymore.", name)
else:
msg = _("Could not delete CIFS share %s.") % name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def nfs_export_del(self, share_id):
path = '/shares/' + share_id
command = ['nfs-export', 'del', path]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if 'does not exist' in e.stderr:
LOG.warning(_LW("Export %s does not exist on "
"backend anymore."), path)
else:
msg = six.text_type(e)
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def tree_delete(self, path):
command = ['tree-delete-job-submit', '--confirm', '-f', self.fs_name,
path]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if 'Source path: Cannot access' in e.stderr:
LOG.warning(_LW("Attempted to delete path %s "
"but it does not exist."), path)
else:
msg = _("Could not submit tree delete job to delete path "
"%s.") % path
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def vvol_delete(self, vvol_name):
path = '/shares/' + vvol_name
# Virtual-volume and quota are deleted together
command = ['tree-delete-job-submit', '--confirm', '-f',
self.fs_name, path]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if 'Source path: Cannot access' in e.stderr:
LOG.warning(_LW("Share %s does not exist."), vvol_name)
else:
msg = _("Failed to delete vvol %s.") % vvol_name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def manage_existing(self, share, driver_options):
"""Manages a share that exists on backend.
:param share: Share that will be managed.
:param driver_options: Empty dict or dict with 'volume_id' option.
:returns: Returns a dict with size of share managed
and its location (your path in file-system).
"""
share_id = self._get_hnas_share_id(share['id'])
if share_id != share['id']:
msg = _("Share ID %s already exists, cannot manage.") % share_id
raise exception.HNASBackendException(msg=msg)
LOG.info(
_LI("Share %(shr_path)s will be managed with ID %(shr_id)s."), {
'shr_path': share['export_locations'][0]['path'],
'shr_id': share['id']
})
old_path_info = share['export_locations'][0]['path'].split(':')
old_path = old_path_info[1].split('/')
if len(old_path) == 3:
evs_ip = old_path_info[0]
share_id = old_path[2]
else:
msg = _("Incorrect path. It should have the following format: "
"IP:/shares/share_id.")
raise exception.ShareBackendException(msg=msg)
if evs_ip != self.hnas_evs_ip:
msg = _("The EVS IP %(evs)s is not "
"configured.") % {
'evs': evs_ip
}
raise exception.ShareBackendException(msg=msg)
if self.backend_name not in share['host']:
msg = _("The backend passed in the host parameter (%(shr)s) is "
"not configured.") % {
'shr': share['host']
}
raise exception.ShareBackendException(msg=msg)
output = self._manage_existing(share_id)
self.private_storage.update(share['id'], {'hnas_id': share_id})
return output
def cifs_share_del(self, share_id):
command = [
'cifs-share', 'del', '--target-label', self.fs_name, share_id
]
try:
self._execute(command)
except processutils.ProcessExecutionError as e:
if e.exit_code == 1:
LOG.warning(
_LW("CIFS share %s does not exist on "
"backend anymore."), share_id)
else:
msg = six.text_type(e)
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def check_quota(self, vvol_name):
command = ['quota', 'list', '--verbose', self.fs_name, vvol_name]
try:
output, err = self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Could not check quota of vvol %s.") % vvol_name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
if 'No quotas matching specified filter criteria' in output:
msg = _("Virtual volume %s does not have any"
" quota.") % vvol_name
LOG.error(msg)
raise exception.HNASItemNotFoundException(msg=msg)
def nfs_export_add(self, share_id, snapshot_id=None):
if snapshot_id is not None:
path = os.path.join('/snapshots', share_id, snapshot_id)
name = os.path.join('/snapshots', snapshot_id)
else:
path = name = os.path.join('/shares', share_id)
command = ['nfs-export', 'add', '-S', 'disable', '-c', '127.0.0.1',
name, self.fs_name, path]
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Could not create NFS export %s.") % name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def cifs_share_add(self, share_id, snapshot_id=None):
if snapshot_id is not None:
path = r'\\snapshots\\' + share_id + r'\\' + snapshot_id
name = snapshot_id
else:
path = r'\\shares\\' + share_id
name = share_id
command = ['cifs-share', 'add', '-S', 'disable', '--enable-abe',
'--nodefaultsaa', name, self.fs_name, path]
try:
self._execute(command)
except processutils.ProcessExecutionError:
msg = _("Could not create CIFS share %s.") % name
LOG.exception(msg)
raise exception.HNASBackendException(msg=msg)
def get_share_quota(self, share_id):
command = ['quota', 'list', self.fs_name, share_id]
output, err = self._execute(command)
quota = Quota(output)
if quota.limit is None:
return None
if quota.limit_unit == 'TB':
return quota.limit * units.Ki
elif quota.limit_unit == 'GB':
return quota.limit
else:
msg = (_("Share %s does not support quota values "
"below 1G.") % share_id)
raise exception.HNASBackendException(msg=msg)
