QEMU for Power requires memory aligned to 256MiB. This patch makes the checking and changes if necessary. This patch sets a global variable in osinfo.py, in case of this value change in the feature, code will be easier to update. Signed-off-by: Rodrigo Trujillo <rodrigo.trujillo@linux.vnet.ibm.com> --- src/wok/plugins/kimchi/i18n.py | 3 +++ src/wok/plugins/kimchi/model/vms.py | 26 ++++++++++++++++++++++++++ src/wok/plugins/kimchi/osinfo.py | 7 +++++++ 3 files changed, 36 insertions(+) diff --git a/src/wok/plugins/kimchi/i18n.py b/src/wok/plugins/kimchi/i18n.py index 59b61de..0a77fe7 100644 --- a/src/wok/plugins/kimchi/i18n.py +++ b/src/wok/plugins/kimchi/i18n.py @@ -19,6 +19,8 @@ import gettext +from wok.plugins.kimchi.osinfo import PPC_MEM_ALIGN + _ = gettext.gettext @@ -115,6 +117,7 @@ messages = { "KCHVM0058E": _("Failed to migrate virtual machine %(name)s due error: %(err)s"), "KCHVM0059E": _("User name of the remote server must be a string."), "KCHVM0060E": _("Destination host of the migration must be a string."), + "KCHVM0061E": _("Memory value %(mem)s must be aligned to " + str(PPC_MEM_ALIGN) + "MiB."), "KCHVMHDEV0001E": _("VM %(vmid)s does not contain directly assigned host device %(dev_name)s."), "KCHVMHDEV0002E": _("The host device %(dev_name)s is not allowed to directly assign to VM."), diff --git a/src/wok/plugins/kimchi/model/vms.py b/src/wok/plugins/kimchi/model/vms.py index f1ae8c2..8b7d4bd 100644 --- a/src/wok/plugins/kimchi/model/vms.py +++ b/src/wok/plugins/kimchi/model/vms.py @@ -21,6 +21,7 @@ import copy import libvirt import lxml.etree as ET import os +import platform import random import socket import string @@ -45,6 +46,7 @@ from wok.plugins.kimchi import model from wok.plugins.kimchi import vnc from wok.plugins.kimchi.config import READONLY_POOL_TYPE, get_kimchi_version from wok.plugins.kimchi.kvmusertests import UserTests +from wok.plugins.kimchi.osinfo import PPC_MEM_ALIGN from wok.plugins.kimchi.model.config import CapabilitiesModel from wok.plugins.kimchi.model.featuretests import FeatureTests from wok.plugins.kimchi.model.templates import TemplateModel @@ -233,6 +235,13 @@ class VMModel(object): vm_locks[name] = lock with lock: + # make sure memory is alingned in 256MiB + distro, _, _ = platform.linux_distribution() + if 'memory' in params and distro == "IBM_PowerKVM": + if params['memory'] % PPC_MEM_ALIGN != 0: + raise InvalidParameter('KCHVM0061E', + {'mem': str(params['memory'])}) + dom = self.get_vm(name, self.conn) vm_name, dom = self._static_vm_update(name, dom, params) self._live_vm_update(dom, params) @@ -803,6 +812,17 @@ class VMModel(object): raise OperationFailed("KCHVM0041E") elif slots == 0: slots = 1 + + force_max_mem_update = False + distro, _, _ = platform.linux_distribution() + if distro == "IBM_PowerKVM": + # max memory 256MiB alignment + host_mem -= (host_mem % PPC_MEM_ALIGN) + # force max memory update if it exists but it's wrong. + if maxMem is not None and\ + int(maxMem.text) != (host_mem << 10): + force_max_mem_update = True + if maxMem is None: max_mem_xml = E.maxMemory( str(host_mem * 1024), @@ -816,6 +836,12 @@ class VMModel(object): './maxMemory', str(slots), attr='slots') + + if force_max_mem_update: + new_xml = xml_item_update(new_xml, + './maxMemory', + str(host_mem << 10)) + return new_xml return ET.tostring(root, encoding="utf-8") diff --git a/src/wok/plugins/kimchi/osinfo.py b/src/wok/plugins/kimchi/osinfo.py index 7f8ace9..30ecd4f 100644 --- a/src/wok/plugins/kimchi/osinfo.py +++ b/src/wok/plugins/kimchi/osinfo.py @@ -27,6 +27,9 @@ from distutils.version import LooseVersion from wok.config import PluginPaths +# In PowerPC, memories must be aligned to 256 MiB +PPC_MEM_ALIGN = 256 + SUPPORTED_ARCHS = {'x86': ('i386', 'i686', 'x86_64'), 'power': ('ppc', 'ppc64'), @@ -204,6 +207,10 @@ def lookup(distro, version): # set up arch to ppc64 instead of ppc64le due to libvirt compatibility if params["arch"] == "ppc64le": params["arch"] = "ppc64" + # in Power, memory must be aligned in 256MiB + if (params['max_memory'] >> 10) % PPC_MEM_ALIGN != 0: + alignment = params['max_memory'] % (PPC_MEM_ALIGN << 10) + params['max_memory'] -= alignment if distro in modern_version_bases[arch]: if LooseVersion(version) >= LooseVersion( -- 2.1.0