def _check_hardlinks(self):
test_name = os.path.join(self.path, str(uuid4()))
open(test_name, 'ab').close()
link_name = '%s.new' % test_name
try:
# XSI-1100: Fail the link operation
util.fistpoint.activate_custom_fn("FileSR_fail_hardlink",
self._raise_hardlink_error)
os.link(test_name, link_name)
self.session.xenapi.SR.remove_from_sm_config(
self.sr_ref, SharedFileSR.NO_HARDLINK_SUPPORT)
except OSError:
msg = "File system for SR %s does not support hardlinks, crash " \
"consistency of snapshots cannot be assured" % self.uuid
util.SMlog(msg, priority=util.LOG_WARNING)
try:
self.session.xenapi.SR.add_to_sm_config(
self.sr_ref, SharedFileSR.NO_HARDLINK_SUPPORT, 'True')
self.session.xenapi.message.create(
"sr_does_not_support_hardlinks", 2, "SR", self.uuid, msg)
except XenAPI.Failure:
# Might already be set and checking has TOCTOU issues
pass
finally:
util.force_unlink(link_name)
util.force_unlink(test_name)
def delete(self, sr_uuid, vdi_uuid, data_only = False):
if not util.ioretry(lambda: util.pathexists(self.path)):
return super(FileVDI, self).delete(sr_uuid, vdi_uuid, data_only)
if self.attached:
raise xs_errors.XenError('VDIInUse')
try:
util.force_unlink(self.path)
except Exception, e:
raise xs_errors.XenError(
'VDIDelete',
opterr='Failed to unlink file during deleting VDI: %s' % str(e))
def delete(self, sr_uuid, vdi_uuid, data_only = False):
if not util.ioretry(lambda: util.pathexists(self.path)):
return super(FileVDI, self).delete(sr_uuid, vdi_uuid, data_only)
if self.attached:
raise xs_errors.XenError('VDIInUse')
try:
util.force_unlink(self.path)
except Exception, e:
raise xs_errors.XenError(
'VDIDelete',
opterr='Failed to unlink file during deleting VDI: %s' % str(e))
def delete(self, sr_uuid, vdi_uuid, data_only=False):
if not util.ioretry(lambda: util.pathexists(self.path)):
return super(FileVDI, self).delete(sr_uuid, vdi_uuid, data_only)
if self.attached:
raise xs_errors.XenError('VDIInUse')
try:
util.force_unlink(self.path)
except Exception as e:
raise xs_errors.XenError(
'VDIDelete',
opterr='Failed to unlink file during deleting VDI: %s' %
str(e))
self.sr.deleted_vdi(vdi_uuid)
# If this is a data_destroy call, don't remove from XAPI db
if not data_only:
self._db_forget()
self.sr._update(self.sr.uuid, -self.size)
self.sr.lock.cleanupAll(vdi_uuid)
self.sr._kickGC()
return super(FileVDI, self).delete(sr_uuid, vdi_uuid, data_only)