[Kimchi-devel] [PATCH V2] Issue #992 : Create template on s390x without libvirt storage
harshalp at linux.vnet.ibm.com
harshalp at linux.vnet.ibm.com
Wed Aug 31 11:43:16 UTC 2016
From: Harshal Patil <harshalp at linux.vnet.ibm.com>
V1:
This patch adds support for creating templates on s390x arch
without using libvirt related storage calls
V2:
Review comments
Signed-off-by: Harshal Patil <harshalp at linux.vnet.ibm.com>
---
docs/API.md | 2 +
i18n.py | 3 ++
model/storagepools.py | 17 ++++++--
model/storagevolumes.py | 1 -
model/templates.py | 27 +++++++++----
model/vms.py | 9 ++++-
osinfo.py | 47 ++++++++++++++++++++--
utils.py | 34 ++++++++++++++++
vmtemplate.py | 105 ++++++++++++++++++++++++++++++------------------
9 files changed, 189 insertions(+), 56 deletions(-)
diff --git a/docs/API.md b/docs/API.md
index 7bd677f..d8d191a 100644
--- a/docs/API.md
+++ b/docs/API.md
@@ -427,6 +427,7 @@ A interface represents available network interface on VM.
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.
+ * path : Storage path to store virtual disks without libvirt
* networks *(optional)*: list of networks will be assigned to the new VM.
* disks: An array of requested disks with the following optional fields
(either *size* or *volume* must be specified):
@@ -481,6 +482,7 @@ A interface represents available network interface on VM.
* format: Format of the image. Valid formats: qcow, qcow2, qed, raw, vmdk, vpc.
* pool: Storage pool information
* name: URI of the storagepool where template allocates vm disk.
+ * path (optional): Either pool or path to store the virtual disks should be specified
* graphics *(optional)*: A dict of graphics paramenters of this template
* type: The type of graphics. It can be VNC or spice or None.
* vnc: Graphical display using the Virtual Network
diff --git a/i18n.py b/i18n.py
index ea2c4ab..7e60079 100644
--- a/i18n.py
+++ b/i18n.py
@@ -190,6 +190,9 @@ messages = {
"KCHTMPL0031E": _("Memory value (%(mem)sMiB) must be equal or lesser than maximum memory value (%(maxmem)sMiB)"),
"KCHTMPL0032E": _("Unable to update template due error: %(err)s"),
"KCHTMPL0033E": _("Parameter 'disks' requires at least one disk object"),
+ "KCHTMPL0034E": _("Storage without libvirt pool is not supported on this architecture"),
+ "KCHTMPL0035E": _("Error while creating the virtual disk for the guest. Details: %(err)s"),
+ "KCHTMPL0036E": _("When setting template disks without libvirt, following parameters are required: 'index', 'format', 'path', 'size'"),
"KCHPOOL0001E": _("Storage pool %(name)s already exists"),
"KCHPOOL0002E": _("Storage pool %(name)s does not exist"),
diff --git a/model/storagepools.py b/model/storagepools.py
index af92ec9..08e6426 100644
--- a/model/storagepools.py
+++ b/model/storagepools.py
@@ -33,7 +33,7 @@ from wok.plugins.kimchi.model.host import DeviceModel
from wok.plugins.kimchi.model.libvirtstoragepool import StoragePoolDef
from wok.plugins.kimchi.osinfo import defaults as tmpl_defaults
from wok.plugins.kimchi.scan import Scanner
-from wok.plugins.kimchi.utils import pool_name_from_uri
+from wok.plugins.kimchi.utils import pool_name_from_uri, is_s390x
ISO_POOL_NAME = u'kimchi_isos'
@@ -57,6 +57,7 @@ STORAGE_SOURCES = {'netfs': {'addr': '/pool/source/host/@name',
class StoragePoolsModel(object):
+
def __init__(self, **kargs):
self.conn = kargs['conn']
self.objstore = kargs['objstore']
@@ -72,6 +73,13 @@ class StoragePoolsModel(object):
def _check_default_pools(self):
pools = {}
+ if 'disks' not in tmpl_defaults or len(tmpl_defaults['disks']) == 0 \
+ or (not tmpl_defaults.get('disks')[0].get(
+ 'pool') and is_s390x()):
+ # Since libvirt pools are not supported on s390x
+ # No need to check for default pools on s390x
+ return
+ tmpl_defaults.get('disks')
default_pool = tmpl_defaults['disks'][0]['pool']['name']
default_pool = default_pool.split('/')[-1]
@@ -437,9 +445,10 @@ class StoragePoolModel(object):
for tmpl in templates:
t_info = session.get('template', tmpl)
for disk in t_info['disks']:
- t_pool = disk['pool']['name']
- if pool_name_from_uri(t_pool) == pool_name:
- return True
+ if 'pool' in disk:
+ t_pool = disk['pool']['name']
+ if pool_name_from_uri(t_pool) == pool_name:
+ return True
return False
def deactivate(self, name):
diff --git a/model/storagevolumes.py b/model/storagevolumes.py
index 4708674..d721d3b 100644
--- a/model/storagevolumes.py
+++ b/model/storagevolumes.py
@@ -44,7 +44,6 @@ from wok.plugins.kimchi.model.diskutils import set_disk_used_by
from wok.plugins.kimchi.model.storagepools import StoragePoolModel
from wok.plugins.kimchi.utils import get_next_clone_name
-
VOLUME_TYPE_MAP = {0: 'file',
1: 'block',
2: 'directory',
diff --git a/model/templates.py b/model/templates.py
index 8df8c3b..c749f4b 100644
--- a/model/templates.py
+++ b/model/templates.py
@@ -28,13 +28,15 @@ import urlparse
from wok.exception import InvalidOperation, InvalidParameter
from wok.exception import NotFoundError, OperationFailed
-from wok.utils import probe_file_permission_as_user, run_setfacl_set_attr
+from wok.utils import probe_file_permission_as_user
+from wok.utils import run_setfacl_set_attr
from wok.xmlutils.utils import xpath_get_text
from wok.plugins.kimchi.config import get_kimchi_version
from wok.plugins.kimchi.kvmusertests import UserTests
from wok.plugins.kimchi.model.cpuinfo import CPUInfoModel
from wok.plugins.kimchi.utils import is_libvirtd_up, pool_name_from_uri
+from wok.plugins.kimchi.utils import create_disk_image
from wok.plugins.kimchi.vmtemplate import VMTemplate
ISO_TYPE = "ISO 9660 CD-ROM"
@@ -400,15 +402,26 @@ class LibvirtVMTemplate(VMTemplate):
def fork_vm_storage(self, vm_uuid):
# Provision storages:
- vol_list = self.to_volume_list(vm_uuid)
+ disk_and_vol_list = self.to_volume_list(vm_uuid)
try:
- for v in vol_list:
- pool = self._get_storage_pool(v['pool'])
- # outgoing text to libvirt, encode('utf-8')
- pool.createXML(v['xml'].encode('utf-8'), 0)
+ for v in disk_and_vol_list:
+ if v['pool'] is not None:
+ pool = self._get_storage_pool(v['pool'])
+ # outgoing text to libvirt, encode('utf-8')
+ pool.createXML(v['xml'].encode('utf-8'), 0)
+ else:
+ capacity = v['capacity']
+ format_type = v['format']
+ path = v['path']
+ create_disk_image(
+ format_type=format_type,
+ path=path,
+ capacity=capacity)
+
except libvirt.libvirtError as e:
raise OperationFailed("KCHVMSTOR0008E", {'error': e.message})
- return vol_list
+
+ return disk_and_vol_list
def set_cpu_info(self):
# undefined topology: consider these values to calculate maxvcpus
diff --git a/model/vms.py b/model/vms.py
index 7f607f5..3ad722e 100644
--- a/model/vms.py
+++ b/model/vms.py
@@ -61,7 +61,7 @@ from wok.plugins.kimchi.model.utils import remove_metadata_node
from wok.plugins.kimchi.model.utils import set_metadata_node
from wok.plugins.kimchi.osinfo import defaults, MEM_DEV_SLOTS
from wok.plugins.kimchi.screenshot import VMScreenshot
-from wok.plugins.kimchi.utils import get_next_clone_name
+from wok.plugins.kimchi.utils import get_next_clone_name, is_s390x
from wok.plugins.kimchi.utils import template_name_from_uri
from wok.plugins.kimchi.xmlutils.bootorder import get_bootorder_node
from wok.plugins.kimchi.xmlutils.bootorder import get_bootmenu_node
@@ -1395,6 +1395,13 @@ class VMModel(object):
except libvirt.libvirtError as e:
wok_log.error('Unable to get storage volume by path: %s' %
e.message)
+ try:
+ if is_s390x() and os.path.exists(path):
+ os.remove(path)
+ except Exception as e:
+ wok_log.error('Unable to delete storage path: %s' %
+ e.message)
+
except Exception as e:
raise OperationFailed('KCHVOL0017E', {'err': e.message})
diff --git a/osinfo.py b/osinfo.py
index 528cf14..d60cc15 100644
--- a/osinfo.py
+++ b/osinfo.py
@@ -158,6 +158,12 @@ def _get_tmpl_defaults():
'maxmemory': _get_default_template_mem()}
tmpl_defaults['storage']['disk.0'] = {'size': 10, 'format': 'qcow2',
'pool': 'default'}
+ is_on_s390x = True if _get_arch() == 's390x' else False
+
+ if is_on_s390x:
+ tmpl_defaults['storage']['disk.0']['path'] = '/var/lib/libvirt/images/'
+ del tmpl_defaults['storage']['disk.0']['pool']
+
tmpl_defaults['processor']['vcpus'] = 1
tmpl_defaults['processor']['maxvcpus'] = 1
tmpl_defaults['graphics'] = {'type': 'vnc', 'listen': '127.0.0.1'}
@@ -165,7 +171,12 @@ def _get_tmpl_defaults():
default_config = ConfigObj(tmpl_defaults)
# Load template configuration file
- config_file = os.path.join(kimchiPaths.sysconf_dir, 'template.conf')
+ if is_on_s390x:
+ config_file = os.path.join(
+ kimchiPaths.sysconf_dir,
+ 'template_s390x.conf')
+ else:
+ config_file = os.path.join(kimchiPaths.sysconf_dir, 'template.conf')
config = ConfigObj(config_file)
# Merge default configuration with file configuration
@@ -186,11 +197,39 @@ def _get_tmpl_defaults():
# Parse storage section to get disks values
storage_section = default_config.pop('storage')
defaults['disks'] = []
- for disk in storage_section.keys():
+
+ pool_exists = False
+ path_exists = False
+ for index, disk in enumerate(storage_section.keys()):
data = storage_section[disk]
data['index'] = int(disk.split('.')[1])
- data['pool'] = {"name": '/plugins/kimchi/storagepools/' +
- storage_section[disk].pop('pool')}
+ # Right now 'Path' is only supported on s390x
+ if storage_section[disk].get('path') and is_on_s390x:
+ path_exists = True
+ data['path'] = storage_section[disk].pop('path')
+ if 'size' not in storage_section[disk]:
+ data['size'] = tmpl_defaults['storage']['disk.0']['size']
+ else:
+ data['size'] = storage_section[disk].pop('size')
+
+ if 'format' not in storage_section[disk]:
+ data['format'] = tmpl_defaults['storage']['disk.0']['format']
+ else:
+ data['format'] = storage_section[disk].pop('format')
+ else:
+ storage_section[disk].get('pool')
+ pool_exists = True
+ data['pool'] = {"name": '/plugins/kimchi/storagepools/' +
+ storage_section[disk].pop('pool')}
+
+ # If both pool and path don't exist, pick the defaults
+ if index == len(storage_section.keys()) - 1 and \
+ (not pool_exists and not path_exists):
+ if is_on_s390x: # Special handling for s390x
+ data['path'] = tmpl_defaults['storage']['disk.0']['path']
+ else:
+ data['pool'] = {"name": '/plugins/kimchi/storagepools/default'}
+
defaults['disks'].append(data)
# Parse processor section to get vcpus and cpu_topology values
diff --git a/utils.py b/utils.py
index 26d3cf6..0fca191 100644
--- a/utils.py
+++ b/utils.py
@@ -24,6 +24,7 @@ import platform
import re
import sqlite3
import time
+import os
import urllib2
from httplib import HTTPConnection, HTTPException
from urlparse import urlparse
@@ -31,6 +32,7 @@ from urlparse import urlparse
from wok.exception import InvalidParameter, OperationFailed
from wok.plugins.kimchi import config
from wok.plugins.kimchi.osinfo import get_template_default
+from wok.stringutils import encode_value
from wok.utils import run_command, wok_log
from wok.xmlutils.utils import xpath_get_text
@@ -272,3 +274,35 @@ def is_libvirtd_up():
output, error, rc = run_command(cmd, silent=True)
return True if output == 'active\n' else False
+
+
+def is_s390x():
+ """
+ Check if current arch is 's390x'
+ Returns:
+ """
+ if os.uname()[4] == 's390x':
+ return True
+
+ return False
+
+
+def create_disk_image(format_type, path, capacity):
+ """
+ Create a disk image for the Guest
+ Args:
+ format: Format of the storage. e.g. qcow2
+ path: Path where the virtual disk will be created
+ capacity: Capacity of the virtual disk in GBs
+
+ Returns:
+
+ """
+ out, err, rc = run_command(
+ ["/usr/bin/qemu-img", "create", "-f", format_type, "-o",
+ "preallocation=metadata", path, encode_value(capacity) + "G"])
+
+ if rc != 0:
+ raise OperationFailed("KCHTMPL0035E", {'err': err})
+
+ return
\ No newline at end of file
diff --git a/vmtemplate.py b/vmtemplate.py
index babf050..3b9eb32 100644
--- a/vmtemplate.py
+++ b/vmtemplate.py
@@ -31,7 +31,8 @@ from wok.exception import MissingParameter, OperationFailed
from wok.plugins.kimchi import imageinfo
from wok.plugins.kimchi import osinfo
from wok.plugins.kimchi.isoinfo import IsoImage
-from wok.plugins.kimchi.utils import check_url_path, pool_name_from_uri
+from wok.plugins.kimchi.utils import check_url_path, is_s390x
+from wok.plugins.kimchi.utils import pool_name_from_uri
from wok.plugins.kimchi.xmlutils.bootorder import get_bootorder_xml
from wok.plugins.kimchi.xmlutils.cpu import get_cpu_xml
from wok.plugins.kimchi.xmlutils.disk import get_disk_xml
@@ -42,6 +43,7 @@ from wok.plugins.kimchi.xmlutils.serial import get_serial_xml
class VMTemplate(object):
+
def __init__(self, args, scan=False, netboot=False):
"""
Construct a VM Template from a widely variable amount of information.
@@ -95,35 +97,49 @@ class VMTemplate(object):
disks = self.info.get('disks')
basic_disk = ['index', 'format', 'pool', 'size']
+ basic_path_disk = ['index', 'format', 'path', 'size']
ro_disk = ['index', 'format', 'pool', 'volume']
base_disk = ['index', 'base', 'pool', 'size', 'format']
for index, disk in enumerate(disks):
disk_info = dict(default_disk)
-
- pool = disk.get('pool', default_disk['pool'])
- pool_type = self._get_storage_type(pool['name'])
-
- if pool_type in ['iscsi', 'scsi']:
- disk_info = {'index': 0, 'format': 'raw', 'volume': None}
-
- disk_info.update(disk)
- pool_name = disk_info.get('pool', {}).get('name')
- if pool_name is None:
- raise MissingParameter('KCHTMPL0028E')
-
- keys = sorted(disk_info.keys())
- if ((keys != sorted(basic_disk)) and (keys != sorted(ro_disk)) and
- (keys != sorted(base_disk))):
- raise MissingParameter('KCHTMPL0028E')
-
- if pool_type in ['logical', 'iscsi', 'scsi']:
- if disk_info['format'] != 'raw':
- raise InvalidParameter('KCHTMPL0029E')
-
- disk_info['pool']['type'] = pool_type
- disk_info['index'] = disk_info.get('index', index)
- self.info['disks'][index] = disk_info
+ if disk.get('pool'):
+ pool = disk.get('pool', default_disk.get('pool'))
+ pool_type = self._get_storage_type(pool['name'])
+ if pool_type in ['iscsi', 'scsi']:
+ disk_info = {'index': 0, 'format': 'raw', 'volume': None}
+
+ disk_info.update(disk)
+ pool_name = disk_info.get('pool', {}).get('name')
+ if pool_name is None:
+ raise MissingParameter('KCHTMPL0028E')
+
+ keys = sorted(disk_info.keys())
+ if ((keys != sorted(basic_disk)) and
+ (keys != sorted(ro_disk)) and
+ (keys != sorted(base_disk)) and
+ (keys != basic_path_disk)):
+ raise MissingParameter('KCHTMPL0028E')
+
+ if pool_type in ['logical', 'iscsi', 'scsi']:
+ if disk_info['format'] != 'raw':
+ raise InvalidParameter('KCHTMPL0029E')
+
+ disk_info['pool']['type'] = pool_type
+ disk_info['index'] = disk_info.get('index', index)
+ self.info['disks'][index] = disk_info
+ elif is_s390x():
+ # For now support 'path' only on s390x
+ path = disk.get('path', default_disk['path'])
+ disk_info.update(disk)
+ keys = sorted(disk_info.keys())
+ if keys != sorted(basic_path_disk):
+ raise MissingParameter('KCHTMPL0036E')
+ disk_info['path'] = path
+ disk_info['index'] = disk_info.get('index', index)
+ self.info['disks'][index] = disk_info
+ else:
+ raise InvalidParameter('KCHTMPL0034E')
def _get_os_info(self, args, scan):
distro = version = 'unknown'
@@ -217,8 +233,9 @@ class VMTemplate(object):
params = dict(base_disk_params)
params['format'] = disk['format']
params['index'] = index
- params.update(locals().get('%s_disk_params' %
- disk['pool']['type'], {}))
+ if disk.get('pool'):
+ params.update(locals().get('%s_disk_params' %
+ disk['pool']['type'], {}))
volume = disk.get('volume')
if volume is not None:
@@ -226,9 +243,13 @@ class VMTemplate(object):
volume)
else:
img = "%s-%s.img" % (vm_uuid, params['index'])
- storage_path = self._get_storage_path(disk['pool']['name'])
+ if disk.get('pool'):
+ storage_path = self._get_storage_path(disk['pool']['name'])
+ params['pool_type'] = disk['pool']['type']
+ elif disk.get('path'):
+ storage_path = disk.get('path')
+ params['pool_type'] = None
params['path'] = os.path.join(storage_path, img)
- params['pool_type'] = disk['pool']['type']
disks_xml += get_disk_xml(params)[1]
return unicode(disks_xml, 'utf-8')
@@ -237,20 +258,24 @@ class VMTemplate(object):
ret = []
for i, d in enumerate(self.info['disks']):
# Create only .img. If storagepool is (i)SCSI, volumes will be LUNs
- if d['pool']['type'] in ["iscsi", "scsi"]:
+ if 'pool' in d and d['pool']['type'] in ["iscsi", "scsi"]:
continue
index = d.get('index', i)
volume = "%s-%s.img" % (vm_uuid, index)
- storage_path = self._get_storage_path(d['pool']['name'])
+ if 'path' in d:
+ storage_path = d['path']
+ else:
+ storage_path = self._get_storage_path(d['pool']['name'])
+
info = {'name': volume,
'capacity': d['size'],
'format': d['format'],
'path': '%s/%s' % (storage_path, volume),
- 'pool': d['pool']['name']}
+ 'pool': d['pool']['name'] if 'pool' in d else None}
- if 'logical' == d['pool']['type'] or \
+ if ('pool' in d and 'logical' == d['pool']['type']) or \
info['format'] not in ['qcow2', 'raw']:
info['allocation'] = info['capacity']
else:
@@ -447,8 +472,9 @@ class VMTemplate(object):
def validate(self):
for disk in self.info.get('disks'):
- pool_uri = disk.get('pool', {}).get('name')
- self._get_storage_pool(pool_uri)
+ if 'pool' in disk:
+ pool_uri = disk.get('pool', {}).get('name')
+ self._get_storage_pool(pool_uri)
self._network_validate()
self._iso_validate()
self.cpuinfo_validate()
@@ -499,10 +525,11 @@ class VMTemplate(object):
# validate storagepools and image-based templates integrity
for disk in self.info['disks']:
- pool_uri = disk['pool']['name']
- pool_name = pool_name_from_uri(pool_uri)
- if pool_name not in self._get_active_storagepools_name():
- invalid['storagepools'] = [pool_name]
+ if 'pool' in disk:
+ pool_uri = disk['pool']['name']
+ pool_name = pool_name_from_uri(pool_uri)
+ if pool_name not in self._get_active_storagepools_name():
+ invalid['storagepools'] = [pool_name]
if disk.get("base") is None:
continue
--
1.9.1
More information about the Kimchi-devel
mailing list