def lvrename(self, options, args):
try:
if len(args) < 3:
old_path, new_id = args
volume_group, old_id = old_path.rsplit('/', 1)
else:
volume_group, old_id, new_id = args
old_path = os.path.join(self.storage.device_prefix,
volume_group, old_id)
except ValueError:
errmsg = 'Old and new logical volume names required'
raise utils.ProcessError(self.cmdline, '', errmsg, 3)
if not os.path.isabs(old_path):
errmsg = 'Path required for Logical Volume "%s"' % old_id
raise utils.ProcessError(self.cmdline, '', errmsg, 3)
if not os.path.exists(old_path):
errmsg = 'Existing logical volume "%s" not found in volume ' \
'group "%s"' % (old_id, volume_group)
raise utils.ProcessError(self.cmdline, '', errmsg, 5)
# find & remove old
old_v = [v for v in self.storage.volumes if v['lv_name'] == old_id and
v['vg_id'] == volume_group][0]
self.storage.volumes.remove(old_v)
os.unlink(old_path)
# create new
v = dict(old_v)
v['lv_name'] = new_id
self.storage.volumes.append(v)
lun_path = os.path.join(self.storage.device_prefix, volume_group,
new_id)
try:
os.makedirs(os.path.dirname(lun_path))
except OSError, e:
if e.errno != errno.EEXIST:
raise
def communicate(self):
self.cmd = os.path.basename(self.cmd)
try:
f = getattr(self, self.cmd)
except AttributeError:
out = '%s: command not found' % self.cmd
raise utils.ProcessError(self.cmdline, out, '', 127)
try:
parser = globals()['%s_parser' % self.cmd]
except KeyError:
raise Exception('global %s_parser is not defined!' % self.cmd)
try:
options, args = parser.parse_args(self.args)
except SystemExit:
orig_stdout, orig_stderr = sys.stdout, sys.stderr
stdout, stderr = StringIO(), StringIO()
sys.stdout, sys.stderr = stdout, stderr
try:
options, args = parser.parse_args(self.args)
except SystemExit, e:
errcode = e.args[0]
sys.stdout, sys.stderr = orig_stdout, orig_stderr
raise utils.ProcessError(self.cmdline, stdout.getvalue(),
stderr.getvalue(), errcode)
def delete():
if options.tid.isdigit():
tid = int(options.tid)
else:
tid = len(self.storage.exports) + 1
try:
export = self.storage.exports[tid - 1]
except IndexError:
# TODO(clayg): confirm error code
raise utils.ProcessError(self.cmdline, 'Invalid argument', '',
234)
if options.lun:
# delete lun first
for lun in export['luns']:
if lun['lun'] == options.lun:
break
else:
# TODO(clayg): confirm error code
raise utils.ProcessError(self.cmdline, 'Invalid argument',
'', 234)
export['luns'].remove(lun)
else:
# delete target
self.storage.exports.remove(export)
return ''
def new():
if options.tid.isdigit():
tid = int(options.tid)
else:
tid = len(self.storage.exports) + 1
try:
export = self.storage.exports[tid - 1]
except IndexError:
if 'Name' not in params:
raise utils.ProcessError(self.cmdline, 'Invalid argument.',
'', 234)
for export in self.storage.exports:
if export['name'] == params['Name']:
# duplicate target name
raise utils.ProcessError(self.cmdline, '',
'Invalid argument.', 234)
export = {
'tid': tid,
'name': params['Name'],
'luns': [],
}
if options.lun:
for volume in self.storage.volumes:
if params['Path'].endswith(volume['lv_name']):
break
else:
# did not find path, and break out - path does not exist!
raise utils.ProcessError(self.cmdline, '',
'No such file.', 254)
# create new lun
lun = {
'lun': options.lun,
'path': params['Path'],
'state': 0,
'iotype': 'fileio',
'iomode': 'wt',
}
i = int(options.lun)
try:
export['luns'][i]
except IndexError:
pass
else:
if export['luns'][i]['lun'] == options.lun:
# TODO(clayg): confirm error code
raise utils.ProcessError(self.cmdline,
'Invalid argument.',
'', 234)
export['luns'].insert(i, lun)
while len(self.storage.exports) < tid:
self.storage.exports.append(None)
self.storage.exports[tid - 1] = export
return ''
def lvcreate(self, options, args):
if options.snapshot:
path = args.pop(0)
volume_group, origin = path.rsplit('/', 2)[-2:]
else:
origin = ''
volume_group = args.pop(0)
conflicts = [v for v in self.storage.volumes if (
v['lv_name'] == options.name and v['vg_id'] == volume_group)]
if conflicts:
errmsg = 'Logical volume "%s" already exists in ' \
'volume group "%s"' % (options.name, volume_group)
raise utils.ProcessError(self.cmdline, '', errmsg, 5)
v = {'vg_id': volume_group}
v['lv_name'] = options.name
v['lv_size'] = str(unit_size_to_bytes(options.size))
v['origin'] = origin
v['origin_size'] = str(unit_size_to_bytes(options.size))
v['lv_tags'] = options.addtag or ''
v['lv_kernel_major'] = '253'
self.storage.volumes.append(v)
v['lv_kernel_minor'] = str(len(self.storage.volumes))
lun_path = os.path.join(
self.storage.device_prefix, volume_group, options.name)
try:
os.makedirs(os.path.dirname(lun_path))
except OSError, e:
if e.errno != errno.EEXIST:
raise
def lvs(self, options, args):
volume_group = args[0]
lines = []
headers = options.options.split(',')
if not options.noheadings:
line = options.separator.join(headers)
lines.append(line)
if '/' in volume_group:
group, name = volume_group.split('/')
volumes = [v for v in self.storage.volumes if (
v['lv_name'] == name and v['vg_id'] == group)]
if not volumes:
errmsg = "One or more specified logical volume(s) not found."
raise utils.ProcessError(self.cmdline, '', errmsg, 5)
else:
volumes = [v for v in self.storage.volumes
if v['vg_id'] == volume_group]
for v in volumes:
values = []
for key in headers:
if 'size' in key:
value = '%sB' % v[key]
else:
value = v[key]
values.append(value)
line = options.separator.join(values)
lines.append(line)
return '\n'.join(lines)
def lvremove(self, options, args):
volume_group, name = args.pop(0).rsplit('/', 2)[-2:]
if not options.force:
choice = raw_input("Do you really want to remove active "
"logical volume vol1? [y/n]: ")
if not choice.lower.startswith('y'):
errmsg = "Logical volume %s not removed" % name
raise utils.ProcessError(self.cmdline, errmsg, '', 5)
v = [v for v in self.storage.volumes if v['lv_name'] == name and
v['vg_id'] == volume_group][0]
self.storage.volumes.remove(v)
lun_path = os.path.join(self.storage.device_prefix, volume_group, name)
os.unlink(lun_path)
return 'Logical volume "%s" successfully removed' % name
def vgs(self, options, args):
volume_group = args[0]
lines = []
headers = options.options.split(',')
if not options.noheadings:
line = options.separator.join(headers)
lines.append(line)
volumes = [
v for v in self.storage.volumes if v['vg_id'] == volume_group
]
if not volumes:
errmsg = "Volume group '%s' not found." % volume_group
raise utils.ProcessError(self.cmdline, '', errmsg, 5)
bytes_used = sum([int(v['lv_size']) for v in volumes])
vg_size = 10000000000
info = {'vg_size': '%sB' % vg_size, 'lv_count': str(len(volumes))}
info['vg_free'] = "%sB" % (vg_size - bytes_used)
values = [info[key] for key in headers]
line = options.separator.join(values)
lines.append(line)
return '\n'.join(lines)
def umount(self, options, args):
mnt = args[0]
if mnt not in self.storage.mounts:
raise utils.ProcessError(self.cmdline, '', 'not mounted', 1)
del self.storage.mounts[mnt]
return 'unmounted'