priv_key, pub_key, auth_keys = ssh.GetUserFiles(constants.GANETI_RUNAS,
mkdir=True)
except errors.OpExecError, err:
- logging.exception("Error while processing user ssh files")
- return False
+ msg = "Error while processing user ssh files"
+ logging.exception(msg)
+ return (False, "%s: %s" % (msg, err))
for name, content in [(priv_key, sshkey), (pub_key, sshpub)]:
utils.WriteFile(name, data=content, mode=0600)
utils.RunCmd([constants.SSH_INITD_SCRIPT, "restart"])
- return True
+ return (True, "Node added successfully")
def LeaveCluster():
result[constants.NV_VGLIST] = ListVolumeGroups()
if constants.NV_VERSION in what:
- result[constants.NV_VERSION] = constants.PROTOCOL_VERSION
+ result[constants.NV_VERSION] = (constants.PROTOCOL_VERSION,
+ constants.RELEASE_VERSION)
if constants.NV_HVINFO in what:
hyper = hypervisor.GetHypervisor(what[constants.NV_HVINFO])
result[constants.NV_HVINFO] = hyper.GetNodeInfo()
+ if constants.NV_DRBDLIST in what:
+ try:
+ used_minors = bdev.DRBD8.GetUsedDevs().keys()
+ except errors.BlockDeviceError, err:
+ logging.warning("Can't get used minors list", exc_info=True)
+ used_minors = str(err)
+ result[constants.NV_DRBDLIST] = used_minors
+
return result
results.extend(names)
except errors.HypervisorError, err:
logging.exception("Error enumerating instances for hypevisor %s", hname)
- # FIXME: should we somehow not propagate this to the master?
raise
return results
'state': state,
'time': times,
}
- if name in output and output[name] != value:
- raise errors.HypervisorError("Instance %s running duplicate"
- " with different parameters" % name)
+ if name in output:
+ # we only check static parameters, like memory and vcpus,
+ # and not state and time which can change between the
+ # invocations of the different hypervisors
+ for key in 'memory', 'vcpus':
+ if value[key] != output[name][key]:
+ raise errors.HypervisorError("Instance %s is running twice"
+ " with different parameters" % name)
output[name] = value
return output
-def AddOSToInstance(instance):
+def InstanceOsAdd(instance):
"""Add an OS to an instance.
@type instance: L{objects.Instance}
@return: the success of the operation
"""
- inst_os = OSFromDisk(instance.os)
+ try:
+ inst_os = OSFromDisk(instance.os)
+ except errors.InvalidOS, err:
+ os_name, os_dir, os_err = err.args
+ if os_dir is None:
+ return (False, "Can't find OS '%s': %s" % (os_name, os_err))
+ else:
+ return (False, "Error parsing OS '%s' in directory %s: %s" %
+ (os_name, os_dir, os_err))
create_env = OSEnvironment(instance)
logging.error("os create command '%s' returned error: %s, logfile: %s,"
" output: %s", result.cmd, result.fail_reason, logfile,
result.output)
- return False
+ lines = [utils.SafeEncode(val)
+ for val in utils.TailFile(logfile, lines=20)]
+ return (False, "OS create script failed (%s), last lines in the"
+ " log file:\n%s" % (result.fail_reason, "\n".join(lines)))
- return True
+ return (True, "Successfully installed")
def RunRenameInstance(instance, old_name):
if result.failed:
logging.error("os create command '%s' returned error: %s output: %s",
result.cmd, result.fail_reason, result.output)
- return False
+ lines = [utils.SafeEncode(val)
+ for val in utils.TailFile(logfile, lines=20)]
+ return (False, "OS rename script failed (%s), last lines in the"
+ " log file:\n%s" % (result.fail_reason, "\n".join(lines)))
- return True
+ return (True, "Rename successful")
def _GetVGInfo(vg_name):
return block_devices
-def StartInstance(instance, extra_args):
+def StartInstance(instance):
"""Start an instance.
@type instance: L{objects.Instance}
running_instances = GetInstanceList([instance.hypervisor])
if instance.name in running_instances:
- return True
+ return (True, "Already running")
try:
block_devices = _GatherAndLinkBlockDevs(instance)
hyper = hypervisor.GetHypervisor(instance.hypervisor)
- hyper.StartInstance(instance, block_devices, extra_args)
+ hyper.StartInstance(instance, block_devices)
except errors.BlockDeviceError, err:
logging.exception("Failed to start instance")
- return False
+ return (False, "Block device error: %s" % str(err))
except errors.HypervisorError, err:
logging.exception("Failed to start instance")
_RemoveBlockDevLinks(instance.name, instance.disks)
- return False
+ return (False, "Hypervisor error: %s" % str(err))
- return True
+ return (True, "Instance started successfully")
-def ShutdownInstance(instance):
+def InstanceShutdown(instance):
"""Shut an instance down.
@note: this functions uses polling with a hardcoded timeout.
running_instances = GetInstanceList([hv_name])
if instance.name not in running_instances:
- return True
+ return (True, "Instance already stopped")
hyper = hypervisor.GetHypervisor(hv_name)
try:
hyper.StopInstance(instance)
except errors.HypervisorError, err:
- logging.error("Failed to stop instance")
- return False
+ msg = "Failed to stop instance %s: %s" % (instance.name, err)
+ logging.error(msg)
+ return (False, msg)
# test every 10secs for 2min
time.sleep(10)
else:
# the shutdown did not succeed
- logging.error("shutdown of '%s' unsuccessful, using destroy", instance)
+ logging.error("Shutdown of '%s' unsuccessful, using destroy",
+ instance.name)
try:
hyper.StopInstance(instance, force=True)
except errors.HypervisorError, err:
- logging.exception("Failed to stop instance")
- return False
+ msg = "Failed to force stop instance %s: %s" % (instance.name, err)
+ logging.error(msg)
+ return (False, msg)
time.sleep(1)
if instance.name in GetInstanceList([hv_name]):
- logging.error("could not shutdown instance '%s' even by destroy",
- instance.name)
- return False
+ msg = ("Could not shutdown instance %s even by destroy" %
+ instance.name)
+ logging.error(msg)
+ return (False, msg)
_RemoveBlockDevLinks(instance.name, instance.disks)
- return True
+ return (True, "Instance has been shutdown successfully")
-def RebootInstance(instance, reboot_type, extra_args):
+def InstanceReboot(instance, reboot_type):
"""Reboot an instance.
@type instance: L{objects.Instance}
running_instances = GetInstanceList([instance.hypervisor])
if instance.name not in running_instances:
- logging.error("Cannot reboot instance that is not running")
- return False
+ msg = "Cannot reboot instance %s that is not running" % instance.name
+ logging.error(msg)
+ return (False, msg)
hyper = hypervisor.GetHypervisor(instance.hypervisor)
if reboot_type == constants.INSTANCE_REBOOT_SOFT:
try:
hyper.RebootInstance(instance)
except errors.HypervisorError, err:
- logging.exception("Failed to soft reboot instance")
- return False
+ msg = "Failed to soft reboot instance %s: %s" % (instance.name, err)
+ logging.error(msg)
+ return (False, msg)
elif reboot_type == constants.INSTANCE_REBOOT_HARD:
try:
- ShutdownInstance(instance)
- StartInstance(instance, extra_args)
+ stop_result = InstanceShutdown(instance)
+ if not stop_result[0]:
+ return stop_result
+ return StartInstance(instance)
except errors.HypervisorError, err:
- logging.exception("Failed to hard reboot instance")
- return False
+ msg = "Failed to hard reboot instance %s: %s" % (instance.name, err)
+ logging.error(msg)
+ return (False, msg)
else:
- raise errors.ParameterError("reboot_type invalid")
+ return (False, "Invalid reboot_type received: %s" % (reboot_type,))
- return True
+ return (True, "Reboot successful")
+
+
+def MigrationInfo(instance):
+ """Gather information about an instance to be migrated.
+
+ @type instance: L{objects.Instance}
+ @param instance: the instance definition
+
+ """
+ hyper = hypervisor.GetHypervisor(instance.hypervisor)
+ try:
+ info = hyper.MigrationInfo(instance)
+ except errors.HypervisorError, err:
+ msg = "Failed to fetch migration information"
+ logging.exception(msg)
+ return (False, '%s: %s' % (msg, err))
+ return (True, info)
+
+
+def AcceptInstance(instance, info, target):
+ """Prepare the node to accept an instance.
+
+ @type instance: L{objects.Instance}
+ @param instance: the instance definition
+ @type info: string/data (opaque)
+ @param info: migration information, from the source node
+ @type target: string
+ @param target: target host (usually ip), on this node
+
+ """
+ hyper = hypervisor.GetHypervisor(instance.hypervisor)
+ try:
+ hyper.AcceptInstance(instance, info, target)
+ except errors.HypervisorError, err:
+ msg = "Failed to accept instance"
+ logging.exception(msg)
+ return (False, '%s: %s' % (msg, err))
+ return (True, "Accept successfull")
+
+
+def FinalizeMigration(instance, info, success):
+ """Finalize any preparation to accept an instance.
+
+ @type instance: L{objects.Instance}
+ @param instance: the instance definition
+ @type info: string/data (opaque)
+ @param info: migration information, from the source node
+ @type success: boolean
+ @param success: whether the migration was a success or a failure
+
+ """
+ hyper = hypervisor.GetHypervisor(instance.hypervisor)
+ try:
+ hyper.FinalizeMigration(instance, info, success)
+ except errors.HypervisorError, err:
+ msg = "Failed to finalize migration"
+ logging.exception(msg)
+ return (False, '%s: %s' % (msg, err))
+ return (True, "Migration Finalized")
def MigrateInstance(instance, target, live):
return (True, "Migration successfull")
-def CreateBlockDevice(disk, size, owner, on_primary, info):
+def BlockdevCreate(disk, size, owner, on_primary, info):
"""Creates a block device for an instance.
@type disk: L{objects.Disk}
clist = []
if disk.children:
for child in disk.children:
- crdev = _RecursiveAssembleBD(child, owner, on_primary)
+ try:
+ crdev = _RecursiveAssembleBD(child, owner, on_primary)
+ except errors.BlockDeviceError, err:
+ errmsg = "Can't assemble device %s: %s" % (child, err)
+ logging.error(errmsg)
+ return False, errmsg
if on_primary or disk.AssembleOnSecondary():
# we need the children open in case the device itself has to
# be assembled
- crdev.Open()
+ try:
+ crdev.Open()
+ except errors.BlockDeviceError, err:
+ errmsg = "Can't make child '%s' read-write: %s" % (child, err)
+ logging.error(errmsg)
+ return False, errmsg
clist.append(crdev)
+
try:
- device = bdev.FindDevice(disk.dev_type, disk.physical_id, clist)
- if device is not None:
- logging.info("removing existing device %s", disk)
- device.Remove()
+ device = bdev.Create(disk.dev_type, disk.physical_id, clist, disk.size)
except errors.BlockDeviceError, err:
- pass
+ return False, "Can't create block device: %s" % str(err)
- device = bdev.Create(disk.dev_type, disk.physical_id,
- clist, size)
- if device is None:
- raise ValueError("Can't create child device for %s, %s" %
- (disk, size))
if on_primary or disk.AssembleOnSecondary():
- if not device.Assemble():
- errorstring = "Can't assemble device after creation"
- logging.error(errorstring)
- raise errors.BlockDeviceError("%s, very unusual event - check the node"
- " daemon logs" % errorstring)
+ try:
+ device.Assemble()
+ except errors.BlockDeviceError, err:
+ errmsg = ("Can't assemble device after creation, very"
+ " unusual event: %s" % str(err))
+ logging.error(errmsg)
+ return False, errmsg
device.SetSyncSpeed(constants.SYNC_SPEED)
if on_primary or disk.OpenOnSecondary():
- device.Open(force=True)
+ try:
+ device.Open(force=True)
+ except errors.BlockDeviceError, err:
+ errmsg = ("Can't make device r/w after creation, very"
+ " unusual event: %s" % str(err))
+ logging.error(errmsg)
+ return False, errmsg
DevCacheManager.UpdateCache(device.dev_path, owner,
on_primary, disk.iv_name)
device.SetInfo(info)
physical_id = device.unique_id
- return physical_id
+ return True, physical_id
-def RemoveBlockDevice(disk):
+def BlockdevRemove(disk):
"""Remove a block device.
@note: This is intended to be called recursively.
@return: the success of the operation
"""
+ msgs = []
+ result = True
try:
rdev = _RecursiveFindBD(disk)
except errors.BlockDeviceError, err:
rdev = None
if rdev is not None:
r_path = rdev.dev_path
- result = rdev.Remove()
+ try:
+ rdev.Remove()
+ except errors.BlockDeviceError, err:
+ msgs.append(str(err))
+ result = False
if result:
DevCacheManager.RemoveCache(r_path)
- else:
- result = True
+
if disk.children:
for child in disk.children:
- result = result and RemoveBlockDevice(child)
- return result
+ c_status, c_msg = BlockdevRemove(child)
+ result = result and c_status
+ if c_msg: # not an empty message
+ msgs.append(c_msg)
+
+ return (result, "; ".join(msgs))
def _RecursiveAssembleBD(disk, owner, as_primary):
if children.count(None) >= mcn:
raise
cdev = None
- logging.debug("Error in child activation: %s", str(err))
+ logging.error("Error in child activation (but continuing): %s",
+ str(err))
children.append(cdev)
if as_primary or disk.AssembleOnSecondary():
- r_dev = bdev.Assemble(disk.dev_type, disk.physical_id, children)
+ r_dev = bdev.Assemble(disk.dev_type, disk.physical_id, children, disk.size)
r_dev.SetSyncSpeed(constants.SYNC_SPEED)
result = r_dev
if as_primary or disk.OpenOnSecondary():
return result
-def AssembleBlockDevice(disk, owner, as_primary):
+def BlockdevAssemble(disk, owner, as_primary):
"""Activate a block device for an instance.
This is a wrapper over _RecursiveAssembleBD.
C{True} for secondary nodes
"""
- result = _RecursiveAssembleBD(disk, owner, as_primary)
- if isinstance(result, bdev.BlockDev):
- result = result.dev_path
- return result
+ status = True
+ result = "no error information"
+ try:
+ result = _RecursiveAssembleBD(disk, owner, as_primary)
+ if isinstance(result, bdev.BlockDev):
+ result = result.dev_path
+ except errors.BlockDeviceError, err:
+ result = "Error while assembling disk: %s" % str(err)
+ status = False
+ return (status, result)
-def ShutdownBlockDevice(disk):
+def BlockdevShutdown(disk):
"""Shut down a block device.
First, if the device is assembled (Attach() is successfull), then
@return: the success of the operation
"""
+ msgs = []
+ result = True
r_dev = _RecursiveFindBD(disk)
if r_dev is not None:
r_path = r_dev.dev_path
- result = r_dev.Shutdown()
- if result:
+ try:
+ r_dev.Shutdown()
DevCacheManager.RemoveCache(r_path)
- else:
- result = True
+ except errors.BlockDeviceError, err:
+ msgs.append(str(err))
+ result = False
+
if disk.children:
for child in disk.children:
- result = result and ShutdownBlockDevice(child)
- return result
+ c_status, c_msg = BlockdevShutdown(child)
+ result = result and c_status
+ if c_msg: # not an empty message
+ msgs.append(c_msg)
+
+ return (result, "; ".join(msgs))
-def MirrorAddChildren(parent_cdev, new_cdevs):
+def BlockdevAddchildren(parent_cdev, new_cdevs):
"""Extend a mirrored block device.
@type parent_cdev: L{objects.Disk}
return True
-def MirrorRemoveChildren(parent_cdev, new_cdevs):
+def BlockdevRemovechildren(parent_cdev, new_cdevs):
"""Shrink a mirrored block device.
@type parent_cdev: L{objects.Disk}
return True
-def GetMirrorStatus(disks):
+def BlockdevGetmirrorstatus(disks):
"""Get the mirroring status of a list of devices.
@type disks: list of L{objects.Disk}
for chdisk in disk.children:
children.append(_RecursiveFindBD(chdisk))
- return bdev.FindDevice(disk.dev_type, disk.physical_id, children)
+ return bdev.FindDevice(disk.dev_type, disk.physical_id, children, disk.size)
-def FindBlockDevice(disk):
+def BlockdevFind(disk):
"""Check if a device is activated.
If it is, return informations about the real device.
estimated_time, is_degraded)
"""
- rbd = _RecursiveFindBD(disk)
+ try:
+ rbd = _RecursiveFindBD(disk)
+ except errors.BlockDeviceError, err:
+ return (False, str(err))
if rbd is None:
- return rbd
- return (rbd.dev_path, rbd.major, rbd.minor) + rbd.GetSyncStatus()
+ return (True, None)
+ return (True, (rbd.dev_path, rbd.major, rbd.minor) + rbd.GetSyncStatus())
def UploadFile(file_name, data, mode, uid, gid, atime, mtime):
result = {}
result['OS_API_VERSION'] = '%d' % constants.OS_API_VERSION
result['INSTANCE_NAME'] = instance.name
+ result['INSTANCE_OS'] = instance.os
result['HYPERVISOR'] = instance.hypervisor
result['DISK_COUNT'] = '%d' % len(instance.disks)
result['NIC_COUNT'] = '%d' % len(instance.nics)
str(disk))
real_disk.Open()
result['DISK_%d_PATH' % idx] = real_disk.dev_path
- # FIXME: When disks will have read-only mode, populate this
- result['DISK_%d_ACCESS' % idx] = 'W'
+ result['DISK_%d_ACCESS' % idx] = disk.mode
if constants.HV_DISK_TYPE in instance.hvparams:
result['DISK_%d_FRONTEND_TYPE' % idx] = \
instance.hvparams[constants.HV_DISK_TYPE]
result['NIC_%d_FRONTEND_TYPE' % idx] = \
instance.hvparams[constants.HV_NIC_TYPE]
+ for source, kind in [(instance.beparams, "BE"), (instance.hvparams, "HV")]:
+ for key, value in source.items():
+ result["INSTANCE_%s_%s" % (kind, key)] = str(value)
+
return result
-def GrowBlockDevice(disk, amount):
+def BlockdevGrow(disk, amount):
"""Grow a stack of block devices.
This function is called recursively, with the childrens being the
return True, None
-def SnapshotBlockDevice(disk):
+def BlockdevSnapshot(disk):
"""Create a snapshot copy of a block device.
This function is called recursively, and the snapshot is actually created
if disk.children:
if len(disk.children) == 1:
# only one child, let's recurse on it
- return SnapshotBlockDevice(disk.children[0])
+ return BlockdevSnapshot(disk.children[0])
else:
# more than one child, choose one that matches
for child in disk.children:
if child.size == disk.size:
# return implies breaking the loop
- return SnapshotBlockDevice(child)
+ return BlockdevSnapshot(child)
elif disk.dev_type == constants.LD_LV:
r_dev = _RecursiveFindBD(disk)
if r_dev is not None:
return True
-def RenameBlockDevices(devlist):
+def BlockdevRename(devlist):
"""Rename a list of block devices.
@type devlist: list of tuples
return True
-def CloseBlockDevices(instance_name, disks):
+def BlockdevClose(instance_name, disks):
"""Closes the given block devices.
This means they will be switched to secondary mode (in case of
# standalone, even though this should not happen with the
# new staged way of changing disk configs
try:
- rd.ReAttachNet(multimaster)
+ rd.AttachNet(multimaster)
except errors.BlockDeviceError, err:
return (False, "Can't change network configuration: %s" % str(err))
if all_connected:
if multimaster:
# change to primary mode
for rd in bdevs:
- rd.Open()
+ try:
+ rd.Open()
+ except errors.BlockDeviceError, err:
+ return (False, "Can't change to primary mode: %s" % str(err))
if multimaster:
msg = "multi-master and primary"
else:
#logging.exception("Error while closing fd %s", fd)
pass
- return result == 0, output
+ return result == 0, utils.SafeEncode(output.strip())
def RunHooks(self, hpath, phase, env):
"""Run the scripts in the hooks directory.
projects / ganeti-local / blobdiff