-#
-
"""LibVirt slivers"""
import accounts
import libvirt
import sys
import shutil
+import bwlimit
+import cgroups
+import pprint
from string import Template
STATES = {
- libvirt.VIR_DOMAIN_NOSTATE: 'no state',
- libvirt.VIR_DOMAIN_RUNNING: 'running',
- libvirt.VIR_DOMAIN_BLOCKED: 'blocked on resource',
- libvirt.VIR_DOMAIN_PAUSED: 'paused by user',
+ libvirt.VIR_DOMAIN_NOSTATE: 'no state',
+ libvirt.VIR_DOMAIN_RUNNING: 'running',
+ libvirt.VIR_DOMAIN_BLOCKED: 'blocked on resource',
+ libvirt.VIR_DOMAIN_PAUSED: 'paused by user',
libvirt.VIR_DOMAIN_SHUTDOWN: 'being shut down',
- libvirt.VIR_DOMAIN_SHUTOFF: 'shut off',
- libvirt.VIR_DOMAIN_CRASHED: 'crashed',
+ libvirt.VIR_DOMAIN_SHUTOFF: 'shut off',
+ libvirt.VIR_DOMAIN_CRASHED: 'crashed',
}
-REF_IMG_BASE_DIR = '/vservers/.lvref'
-CON_BASE_DIR = '/vservers'
-
connections = dict()
# Helper methods
def __init__(self, rec):
self.name = rec['name']
logger.verbose ('sliver_libvirt: %s init'%(self.name))
-
+
# Assume the directory with the image and config files
# are in place
-
+
self.keys = ''
self.rspec = {}
self.slice_id = rec['slice_id']
self.enabled = True
self.conn = getConnection(rec['type'])
-
+ self.xid = bwlimit.get_xid(self.name)
+
try:
self.dom = self.conn.lookupByName(self.name)
except:
- logger.verbose('sliver_libvirt: Domain %s does not exist UNEXPECTED: %s'%(self.name, sys.exc_info()[0]))
-
+ logger.verbose('sliver_libvirt: Domain %s does not exist ' \
+ 'UNEXPECTED: %s'%(self.name, sys.exc_info()[1]))
def start(self, delay=0):
''' Just start the sliver '''
if not self.is_running():
self.dom.create()
else:
- logger.verbose('sliver_libvirt: sliver %s already started'%(dom.name()))
-
+ logger.verbose('sliver_libvirt: sliver %s already started'%(self.name))
+
+ # After the VM is started... we can play with the virtual interface
+ # Create the ebtables rule to mark the packets going out from the virtual
+ # interface to the actual device so the filter canmatch against the mark
+ bwlimit.ebtables("-A INPUT -i veth%d -j mark --set-mark %d" % \
+ (self.xid, self.xid))
def stop(self):
logger.verbose('sliver_libvirt: %s stop'%(self.name))
-
+
+ # Remove the ebtables rule before stopping
+ bwlimit.ebtables("-D INPUT -i veth%d -j mark --set-mark %d" % \
+ (self.xid, self.xid))
+
try:
self.dom.destroy()
except:
- logger.verbose('sliver_libvirt: Domain %s not running UNEXPECTED: %s'%(self.name, sys.exc_info()[0]))
- print 'sliver_libvirt: Domain %s not running UNEXPECTED: %s'%(self.name, sys.exc_info()[0])
-
+ logger.verbose('sliver_libvirt: Domain %s not running ' \
+ 'UNEXPECTED: %s'%(self.name, sys.exc_info()[1]))
+ print 'sliver_libvirt: Domain %s not running ' \
+ 'UNEXPECTED: %s'%(self.name, sys.exc_info()[1])
+
def is_running(self):
''' Return True if the domain is running '''
logger.verbose('sliver_libvirt: %s is_running'%self.name)
return True
else:
info = debuginfo(self.dom)
- logger.verbose('sliver_libvirt: %s is NOT RUNNING...\n%s'%(self.name, info))
+ logger.verbose('sliver_libvirt: %s is ' \
+ 'NOT RUNNING...\n%s'%(self.name, info))
return False
except:
- logger.verbose('sliver_libvirt: UNEXPECTED ERROR in %s...\n%s'%(self.name, sys.exc_info[0]))
- print 'sliver_libvirt: UNEXPECTED ERROR in %s...\n%s'%(self.name, sys.exc_info[0])
+ logger.verbose('sliver_libvirt: UNEXPECTED ERROR in ' \
+ '%s: %s'%(self.name, sys.exc_info()[1]))
+ print 'sliver_libvirt: UNEXPECTED ERROR in ' \
+ '%s: %s'%(self.name, sys.exc_info()[1])
+ return False
def configure(self, rec):
-
- sliver_type = rec['type'].split('.')[1] #sliver.[lxc/qemu]
- BASE_DIR = '/cgroup/libvirt/%s/%s/'%(sliver_type, self.name)
+ #sliver.[LXC/QEMU] tolower case
+ #sliver_type = rec['type'].split('.')[1].lower()
+
+ #BASE_DIR = '/cgroup/libvirt/%s/%s/'%(sliver_type, self.name)
+
# Disk allocation
# No way through cgroups... figure out how to do that with user/dir quotas.
# There is no way to do quota per directory. Chown-ing would create
# Memory allocation
if rec.has_key('memlock_hard'):
mem = rec['memlock_hard'] * 1024 # hard limit in bytes
- with open(os.path.join(BASE_DIR, 'memory.limit_in_bytes'), 'w') as f:
- print >>f, mem
+ cgroups.write(self.name, 'memory.limit_in_bytes', mem)
if rec.has_key('memlock_soft'):
mem = rec['memlock_soft'] * 1024 # soft limit in bytes
- with open(os.path.join(BASE_DIR, 'memory.soft_limit_in_bytes'), 'w') as f:
- print >>f, mem
+ cgroups.write(self.name, 'memory.soft_limit_in_bytes', mem)
# CPU allocation
# Only cpu_shares until figure out how to provide limits and guarantees
# (RT_SCHED?)
- if rec.has_key('cpu_share'):
+ if rec.has_key('cpu_share'):
cpu_share = rec['cpu_share']
- with open(os.path.join(BASE_DIR, 'cpu.shares'), 'w') as f:
- print >>f, cpu_share
+ cgroups.write(self.name, 'cpu.shares', cpu_share)
# Call the upper configure method (ssh keys...)
accounts.Account.configure(self, rec)
-
-
-
git://git.onelab.eu / nodemanager.git / blobdiff