Re: [Kimchi-devel] [PATCH][Kimchi 1/3] Add support to edit max memory in Templates

This patch changes the 'memory' parameter in API of Templates to: memory: {current: XXX, maxmemory: YYY} Other changes include: * enable maxmemory edition * remove max memory tests and limits * keeps max memory limit to 1TiB * changes templates.conf to suport max memory * set default memory and maxmemory to 1024 Signed-off-by: Rodrigo Trujillo <rodrigo.trujillo(a)linux.vnet.ibm.com&gt; --- API.json | 44 ++++++++++++++++++++++++++------ docs/API.md | 18 ++++++++++--- i18n.py | 11 ++++++-- model/templates.py | 58 +++++++++++++++++++++++++++++++++++++++--- model/vms.py | 10 ++++++-- osinfo.py | 16 ++++++++---- template.conf | 10 +++++--- vmtemplate.py | 74 ++++++++++++++++++++++-------------------------------- 8 files changed, 169 insertions(+), 72 deletions(-) diff --git a/API.json b/API.json index 294be64..fcde123 100644 --- a/API.json +++ b/API.json @@ -453,10 +453,24 @@ "error": "KCHTMPL0011E" }, "memory": { - "description": "Memory (MB) for the template", - "type": "integer", - "minimum": 512, - "error": "KCHTMPL0013E" + "description": "Current memory and maximum memory values", + "type": "object", + "properties": { + "current": { + "description": "Memory (MB) for the template", + "type": "integer", + "minimum": 512, + "error": "KCHTMPL0013E" + }, + "maxmemory": { + "description": "Maximum memory (MB) for the template", + "type": "integer", + "minimum": 512, + "error": "KCHTMPL0013E" + } + }, + "additionalProperties": false, + "error": "KCHTMPL0030E" }, "cdrom": { "description": "Path for cdrom", @@ -630,10 +644,24 @@ "error": "KCHTMPL0011E" }, "memory": { - "description": "Memory (MB) for the template", - "type": "integer", - "minimum": 512, - "error": "KCHTMPL0013E" + "description": "Current memory and maximum memory values", + "type": "object", + "properties": { + "current": { + "description": "Memory (MB) for the template", + "type": "integer", + "minimum": 512, + "error": "KCHTMPL0013E" + }, + "maxmemory": { + "description": "Maximum memory (MB) for the template", + "type": "integer", + "minimum": 512, + "error": "KCHTMPL0013E" + } + },

+ "additionalProperties": false, + "error": "KCHTMPL0030E" }, "cdrom": { "description": "Path for cdrom", diff --git a/docs/API.md b/docs/API.md index a46e80e..33d51ac 100644 --- a/docs/API.md +++ b/docs/API.md @@ -292,8 +292,11 @@ Represents a snapshot of the Virtual Machine's primary monitor. * name: The name of the Template. Used to identify the Template in this API * os_distro *(optional)*: The operating system distribution * os_version *(optional)*: The version of the operating system distribution - * memory *(optional)*: The amount of memory assigned to the VM. - Default is 1024M. + * memory *(optional)*: The memory parameters of the template, specify one + or both. Default values are 1024MiB: + * current: The amount of memory that will be assigned to the VM. + * maxmemory: The maximum total of memory that the VM can have. Amount + over current will be used exclusively for memory hotplug * cdrom *(optional)*: A volume name or URI to an ISO image. * networks *(optional)*: list of networks will be assigned to the new VM. Default is '[default]' @@ -396,7 +399,11 @@ A interface represents available network interface on VM. * icon: A URI to a PNG image representing this template * os_distro: The operating system distribution * os_version: The version of the operating system distribution - * memory: The amount of memory assigned to the VM in the unit of MB + * memory: The memory parameters of the template, that will be assigned to + the VM in the unit of MiB. + * current: The amount of memory that will be assigned to the VM. + * maxmemory: The maximum total of memory that the VM can have. Amount + over current will be used exclusively for memory hotplug * cdrom: A volume name or URI to an ISO image * storagepool: URI of the storagepool where template allocates vm storage. * networks *(optional)*: list of networks will be assigned to the new VM. @@ -439,7 +446,10 @@ A interface represents available network interface on VM. * icon: A URI to a PNG image representing this template * os_distro: The operating system distribution * os_version: The version of the operating system distribution - * memory: The amount of memory assigned to the VM + * memory: The memory parameters of the template, specify one or both of: + * current: The amount of memory that will be assigned to the VM. + * maxmemory: The maximum total of memory that the VM can have. Amount + over current will be used exclusively for memory hotplug * cdrom: A volume name or URI to an ISO image * networks *(optional)*: list of networks will be assigned to the new VM. * disks: An array of requested disks with the following optional fields diff --git a/i18n.py b/i18n.py index 59e75f7..5395879 100644 --- a/i18n.py +++ b/i18n.py @@ -127,9 +127,14 @@ messages = { "KCHVM0068E": _("Unable to setup password-less login at remote host %(host)s using user %(user)s. Error: %(error)s"), "KCHVM0069E": _("Password field must be a string."), "KCHVM0070E": _("Error creating local host ssh rsa key of user 'root'."), - "KCHVM0071E": _("Memory value %(mem)s must be aligned to %(alignment)sMiB."), + "KCHVM0071E": _("%(param)s value (%(mem)sMiB) must be aligned to %(alignment)sMiB."), "KCHVM0073E": _("Unable to update the following parameters while the VM is offline: %(params)s"), "KCHVM0074E": _("Unable to update the following parameters while the VM is online: %(params)s"), + "KCHVM0075E": _("Maximum memory requested is higher than amount supported by the host: %(memHost)sMiB."), + "KCHVM0076E": _("Maximum memory requested is higher than maximum amount recommended: 1TiB"), + "KCHVM0077E": _("Cannot update maximum memory when guest is running."), + "KCHVM0078E": _("Maximum memory requested is higher than amount supported by the host: %(memHost)sMiB."), + "KCHVM0079E": _("Memory requested is higher than maximum amount recommended: 1TiB"), "KCHVM0076E": _("VM %(name)s must have serial and console defined to open a web serial console"), "KCHVM0077E": _("Impossible to get the serial console of %(name)s"), @@ -165,7 +170,7 @@ messages = { "KCHTMPL0010E": _("Template distribution must be a string"), "KCHTMPL0011E": _("Template distribution version must be a string"), "KCHTMPL0012E": _("The number of CPUs must be an integer greater than 0"), - "KCHTMPL0013E": _("Amount of memory (MB) must be an integer greater than 512"), + "KCHTMPL0013E": _("Amount of memory and maximum memory (MB) must be an integer greater than 512"), "KCHTMPL0014E": _("Template CDROM must be a local or remote ISO file"), "KCHTMPL0015E": _("Invalid storage pool URI %(value)s specified for template"), "KCHTMPL0016E": _("Specify an ISO image as CDROM or a base image to create a template"), @@ -181,6 +186,8 @@ messages = { "KCHTMPL0027E": _("Invalid disk image format. Valid formats: bochs, cloop, cow, dmg, qcow, qcow2, qed, raw, vmdk, vpc."), "KCHTMPL0028E": _("When setting template disks, following parameters are required: 'index', 'pool name', 'format', 'size' or 'volume' (for scsi/iscsi pools)"), "KCHTMPL0029E": _("Disk format must be 'raw', for logical, iscsi, and scsi pools."), + "KCHTMPL0030E": _("Memory expects an object with one or both parameters: 'current' and 'maxmemory'"), + "KCHTMPL0031E": _("Memory value (%(mem)sMiB) must be equal or lesser than maximum memory value (%(maxmem)sMiB)"), "KCHPOOL0001E": _("Storage pool %(name)s already exists"), "KCHPOOL0002E": _("Storage pool %(name)s does not exist"), diff --git a/model/templates.py b/model/templates.py index 8a29e02..6138592 100644 --- a/model/templates.py +++ b/model/templates.py @@ -20,6 +20,8 @@ import copy import libvirt import os +import platform +import psutil import stat from wok.exception import InvalidOperation, InvalidParameter @@ -34,6 +36,12 @@ from wok.plugins.kimchi.utils import pool_name_from_uri from wok.plugins.kimchi.vmtemplate import VMTemplate +# In PowerPC, memories must be aligned to 256 MiB +PPC_MEM_ALIGN = 256 +# Max memory 1TB, in KiB +MAX_MEM_LIM = 1073741824 + + class TemplatesModel(object): def __init__(self, **kargs): self.objstore = kargs['objstore'] @@ -69,10 +77,8 @@ class TemplatesModel(object): # Validate cpu info t.cpuinfo_validate() - # Validate max memory - maxMem = (t._get_max_memory(t.info.get('memory')) >> 10) - if t.info.get('memory') > maxMem: - raise OperationFailed("KCHVM0041E", {'maxmem': str(maxMem)}) + # Validate memory + self._validate_memory(t.info.get('memory')) # Validate volumes for disk in t.info.get('disks'): @@ -115,6 +121,44 @@ class TemplatesModel(object): raise InvalidParameter("KCHTMPL0019E", {'pool': pool_name, 'volume': volume}) + def _validate_memory(self, memory): + current = memory.get('current') + maxmem = memory.get('maxmemory') + + # Memories must be lesser than 1TB and the Host memory limit + if maxmem > (MAX_MEM_LIM >> 10): + raise InvalidParameter("KCHVM0076E") + if current > (MAX_MEM_LIM >> 10): + raise InvalidParameter("KCHVM0079E") + + if hasattr(psutil, 'virtual_memory'): + host_memory = psutil.virtual_memory().total >> 10 >> 10 + else: + host_memory = psutil.TOTAL_PHYMEM >> 10 >> 10 + if maxmem > host_memory: + raise InvalidParameter("KCHVM0075E", {'memHost': host_memory}) + if current > host_memory: + raise InvalidParameter("KCHVM0078E", {'memHost': host_memory}) + + if current > maxmem: + raise InvalidParameter("KCHTMPL0031E", + {'mem': str(current), + 'maxmem': str(maxmem)}) + + # make sure memory and Maxmemory are alingned in 256MiB in PowerPC + distro, _, _ = platform.linux_distribution() + if distro == "IBM_PowerKVM": + if current % PPC_MEM_ALIGN != 0: + raise InvalidParameter('KCHVM0071E', + {'param': "Memory", + 'mem': str(current), + 'alignment': str(PPC_MEM_ALIGN)}) + elif maxmem % PPC_MEM_ALIGN != 0: + raise InvalidParameter('KCHVM0071E', + {'param': "Maximum Memory", + 'mem': str(maxmem), + 'alignment': str(PPC_MEM_ALIGN)}) + class TemplateModel(object): def __init__(self, **kargs): @@ -180,6 +224,12 @@ class TemplateModel(object): cpu_info.update(new_cpu_info) params['cpu_info'] = cpu_info + # Fix memory values, because method update does not work recursively + new_mem = params.get('memory') + if new_mem: + params['memory'] = copy.copy(old_t.get('memory')) + params['memory'].update(new_mem) + new_t.update(params) for net_name in params.get(u'networks', []): diff --git a/model/vms.py b/model/vms.py index 23e0df9..400ef46 100644 --- a/model/vms.py +++ b/model/vms.py @@ -53,13 +53,13 @@ from wok.plugins.kimchi.model.config import CapabilitiesModel from wok.plugins.kimchi.model.cpuinfo import CPUInfoModel from wok.plugins.kimchi.model.featuretests import FeatureTests from wok.plugins.kimchi.model.templates import TemplateModel +from wok.plugins.kimchi.model.templates import MAX_MEM_LIM, PPC_MEM_ALIGN from wok.plugins.kimchi.model.utils import get_ascii_nonascii_name, get_vm_name from wok.plugins.kimchi.model.utils import get_metadata_node from wok.plugins.kimchi.model.utils import remove_metadata_node from wok.plugins.kimchi.model.utils import set_metadata_node from wok.plugins.kimchi.screenshot import VMScreenshot from wok.plugins.kimchi.utils import template_name_from_uri -from wok.plugins.kimchi.vmtemplate import MAX_MEM_LIM, PPC_MEM_ALIGN from wok.plugins.kimchi.xmlutils.cpu import get_cpu_xml, get_numa_xml from wok.plugins.kimchi.xmlutils.cpu import get_topology_xml from wok.plugins.kimchi.xmlutils.disk import get_vm_disk_info, get_vm_disks @@ -256,7 +256,13 @@ class VMModel(object): if 'memory' in params and distro == "IBM_PowerKVM": if params['memory'] % PPC_MEM_ALIGN != 0: raise InvalidParameter('KCHVM0071E', - {'mem': str(params['memory']), + {'param': "Memory", + 'mem': str(memory), + 'alignment': str(PPC_MEM_ALIGN)}) + elif maxmem % PPC_MEM_ALIGN != 0:

+ raise InvalidParameter('KCHVM0071E', + {'param': "Maximum Memory", + 'mem': str(maxmem), 'alignment': str(PPC_MEM_ALIGN)}) dom = self.get_vm(name, self.conn) diff --git a/osinfo.py b/osinfo.py index 2ec5c3e..8102548 100644 --- a/osinfo.py +++ b/osinfo.py @@ -110,11 +110,13 @@ def _get_tmpl_defaults(): ConfigObj returns a dict like below when no changes were made in the template configuration file (template.conf) - {'main': {}, 'storage': {'disk.0': {}}, 'processor': {}, 'graphics': {}} + {'main': {}, 'memory': {}, 'storage': {'disk.0': {}}, 'processor': {}, + 'graphics': {}} The default values should be like below: - {'main': {'networks': ['default'], 'memory': '1024'}, + {'main': {'networks': ['default']}, + 'memory': {'current': 1024, 'maxmemory': 1024}, 'storage': { 'disk.0': {'format': 'qcow2', 'size': '10', 'pool': '/plugins/kimchi/storagepools/default'}}, 'processor': {'vcpus': '1', 'maxvcpus': 1}, @@ -123,7 +125,8 @@ def _get_tmpl_defaults(): # Create dict with default values tmpl_defaults = defaultdict(dict) tmpl_defaults['main']['networks'] = ['default'] - tmpl_defaults['main']['memory'] = _get_default_template_mem() + tmpl_defaults['memory'] = {'current': _get_default_template_mem(), + 'maxmemory': _get_default_template_mem()} tmpl_defaults['storage']['disk.0'] = {'size': 10, 'format': 'qcow2', 'pool': 'default'} tmpl_defaults['processor']['vcpus'] = 1 @@ -145,8 +148,11 @@ def _get_tmpl_defaults(): 'cdrom_bus': 'ide', 'cdrom_index': 2, 'mouse_bus': 'ps2'} # Parse main section to get networks and memory values - main_section = default_config.pop('main') - defaults.update(main_section) + defaults.update(default_config.pop('main')) + defaults['memory'] = default_config.pop('memory') + + defaults['memory']['current'] = int(defaults['memory']['current']) + defaults['memory']['maxmemory'] = int(defaults['memory']['maxmemory']) # Parse storage section to get disks values storage_section = default_config.pop('storage') diff --git a/template.conf b/template.conf index 3839be4..c4598f1 100644 --- a/template.conf +++ b/template.conf @@ -3,13 +3,17 @@ # [main] -# Memory in MB -#memory = 1024 - # List of networks separated by comma # Represents the virtual network interfaces to be assigned to guest #networks = default, +[memory] +# Memory in MB +# current = 1024 + +# Maximum value of memory to be assigned to guest in MB +# maxmemory = 1024 + [storage] # Specify multiple [[disk.X]] sub-sections to add multiples disks to guest diff --git a/vmtemplate.py b/vmtemplate.py index ef17ff6..ab6d580 100644 --- a/vmtemplate.py +++ b/vmtemplate.py @@ -19,7 +19,6 @@ import os import platform -import psutil import stat import time import urlparse @@ -42,12 +41,6 @@ from wok.plugins.kimchi.xmlutils.qemucmdline import get_qemucmdline_xml from wok.plugins.kimchi.xmlutils.serial import get_serial_xml -# In PowerPC, memories must be aligned to 256 MiB -PPC_MEM_ALIGN = 256 -# Max memory 1TB, in KiB -MAX_MEM_LIM = 1073741824 - - class VMTemplate(object): def __init__(self, args, scan=False): """ @@ -84,6 +77,14 @@ class VMTemplate(object): args['graphics'] = graphics default_disk = self.info['disks'][0] + + # Complete memory args, because dict method update is not recursive + if 'memory' in args: + if 'current' not in args['memory']: + args['memory']['current'] = self.info['memory']['current'] + if 'maxmemory' not in args['memory']: + args['memory']['maxmemory'] = self.info['memory']['maxmemory'] + # Override template values according to 'args' self.info.update(args) disks = self.info.get('disks') @@ -325,29 +326,8 @@ class VMTemplate(object): def _get_cpu_xml(self): # Include CPU topology, if provided cpu_topo = self.info.get('cpu_info', {}).get('topology', {}) - - return get_cpu_xml(0, self.info.get('memory') << 10, cpu_topo) - - def _get_max_memory(self, guest_memory): - # Setting maxMemory of the VM, which will be lesser value between: - # 1TB, (Template Memory * 4), Host Physical Memory. - max_memory = MAX_MEM_LIM - if hasattr(psutil, 'virtual_memory'): - host_memory = psutil.virtual_memory().total >> 10 - else: - host_memory = psutil.TOTAL_PHYMEM >> 10 - if host_memory < max_memory: - max_memory = host_memory - if (((guest_memory * 4) << 10) < max_memory): - max_memory = (guest_memory * 4) << 10 - - # set up arch to ppc64 instead of ppc64le due to libvirt compatibility - if self.info["arch"] == "ppc64": - # in Power, memory must be aligned in 256MiB - if (max_memory >> 10) % PPC_MEM_ALIGN != 0: - alignment = max_memory % (PPC_MEM_ALIGN << 10) - max_memory -= alignment - return max_memory + return get_cpu_xml(0, (self.info.get('memory').get('current')) << 10, + cpu_topo) def to_vm_xml(self, vm_name, vm_uuid, **kwargs): params = dict(self.info) @@ -375,27 +355,33 @@ class VMTemplate(object): else: params['cdroms'] = cdrom_xml - # max memory - params['max_memory'] = self._get_max_memory(params['memory']) - # Setting maximum number of slots to avoid errors when hotplug memory # Number of slots are the numbers of chunks of 1GB that fit inside # the max_memory of the host minus memory assigned to the VM. It # cannot have more than 32 slots in Power. - params['slots'] = ((params['max_memory'] >> 10) - - params['memory']) >> 10 - if params['slots'] < 0: + memory = self.info['memory'].get('current') + maxmemory = self.info['memory'].get('maxmemory') + + slots = (maxmemory - memory) >> 10 + if slots < 0: raise OperationFailed("KCHVM0041E", - {'maxmem': str(params['max_memory'] >> 10)}) - elif params['slots'] == 0: - params['slots'] = 1 - elif params['slots'] > 32: + {'maxmem': str(maxmemory)}) + elif slots == 0: + slots = 1 + elif slots > 32: distro, _, _ = platform.linux_distribution() if distro == "IBM_PowerKVM": - params['slots'] = 32 + slots = 32 + + # Rearrange memory parameters + params['memory'] = self.info['memory'].get('current') + params['max_memory'] = "" + if memory != maxmemory: + maxmem_xml = "<maxMemory slots='%s' unit='MiB'>%s</maxMemory>" + params['max_memory'] = maxmem_xml % (slots, maxmemory) # set a hard limit using max_memory + 1GiB - params['hard_limit'] = params['max_memory'] + (1024 << 10) + params['hard_limit'] = maxmemory + 1024 # vcpu element cpus = params['cpu_info']['vcpus'] @@ -411,9 +397,9 @@ class VMTemplate(object): <name>%(name)s</name> <uuid>%(uuid)s</uuid> <memtune> - <hard_limit unit='KiB'>%(hard_limit)s</hard_limit> + <hard_limit unit='MiB'>%(hard_limit)s</hard_limit> </memtune> - <maxMemory slots='%(slots)s' unit='KiB'>%(max_memory)s</maxMemory> + %(max_memory)s <memory unit='MiB'>%(memory)s</memory> %(vcpus_xml)s %(cpu_info_xml)s