def reserveUnits(self, var_name, reservations):
""" give a set of reservations (dictionary of slicename:cpuid_list),
write those reservations to the appropriate cgroup files.
reservations["_default"] is assumed to be the default reservation
for slices that do not reserve cores. It's essentially the leftover
cpu cores.
"""
default = reservations["_default"]
# set the default vserver cpuset. this will deal with any vservers
# that might be created before the nodemanager has had a chance to
# update the cpusets.
self.reserveDefault(var_name, default)
for cgroup in self.get_cgroups():
if cgroup in reservations:
cpus = reservations[cgroup]
logger.log("CoreSched: reserving " + var_name + " on " +
cgroup + ": " + str(cpus))
else:
# no log message for default; too much verbosity in the common case
cpus = default
if glo_coresched_simulate:
print "R", "/dev/cgroup/" + cgroup + "/" + var_name, self.listToRange(
cpus)
else:
cgroups.write(cgroup, var_name, self.listToRange(cpus))
def reserveUnits (self, var_name, reservations):
"""
give a set of reservations (dictionary of slicename:cpuid_list),
write those reservations to the appropriate cgroup files.
reservations["_default"] is assumed to be the default reservation
for slices that do not reserve cores. It's essentially the leftover
cpu cores.
"""
default = reservations["_default"]
# set the default vserver cpuset. this will deal with any vservers
# that might be created before the nodemanager has had a chance to
# update the cpusets.
self.reserveDefault(var_name, default)
for cgroup in self.get_cgroups():
if cgroup in reservations:
cpus = reservations[cgroup]
logger.log("CoreSched: reserving " + var_name + " on " + cgroup + ": " + str(cpus))
else:
# no log message for default; too much verbosity in the common case
cpus = default
if glo_coresched_simulate:
print("R", cgroup + "/" + var_name, self.listToRange(cpus))
else:
cgroups.write(cgroup, var_name, self.listToRange(cpus))
def configure(self, rec):
#sliver.[LXC/QEMU] tolower case
#sliver_type = rec['type'].split('.')[1].lower()
#BASE_DIR = '/cgroup/libvirt/{}/{}/'.format(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
# problems as username namespaces are not yet implemented (and thus, host
# and containers share the same name ids
# Btrfs support quota per volumes
if "rspec" in rec and "tags" in rec["rspec"]:
if cgroups.get_cgroup_path(self.name) == None:
# If configure is called before start, then the cgroups won't exist
# yet. NM will eventually re-run configure on the next iteration.
# TODO: Add a post-start configure, and move this stuff there
logger.log("Configure: postponing tag check on {} as cgroups are not yet populated"
.format(self.name))
else:
tags = rec["rspec"]["tags"]
# It will depend on the FS selection
if 'disk_max' in tags:
disk_max = tags['disk_max']
if disk_max == 0:
# unlimited
pass
else:
# limit to certain number
pass
# Memory allocation
if 'memlock_hard' in tags:
mem = str(int(tags['memlock_hard']) * 1024) # hard limit in bytes
cgroups.write(self.name, 'memory.limit_in_bytes', mem, subsystem="memory")
if 'memlock_soft' in tags:
mem = str(int(tags['memlock_soft']) * 1024) # soft limit in bytes
cgroups.write(self.name, 'memory.soft_limit_in_bytes', mem, subsystem="memory")
# CPU allocation
# Only cpu_shares until figure out how to provide limits and guarantees
# (RT_SCHED?)
if 'cpu_share' in tags:
cpu_share = tags['cpu_share']
cgroups.write(self.name, 'cpu.shares', cpu_share)
# Call the upper configure method (ssh keys...)
Account.configure(self, rec)
def configure(self, rec):
#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
# problems as username namespaces are not yet implemented (and thus, host
# and containers share the same name ids
# Btrfs support quota per volumes
if rec.has_key("rspec") and rec["rspec"].has_key("tags"):
if cgroups.get_cgroup_path(self.name) == None:
# If configure is called before start, then the cgroups won't exist
# yet. NM will eventually re-run configure on the next iteration.
# TODO: Add a post-start configure, and move this stuff there
logger.log("Configure: postponing tag check on %s as cgroups are not yet populated" % self.name)
else:
tags = rec["rspec"]["tags"]
# It will depend on the FS selection
if tags.has_key('disk_max'):
disk_max = tags['disk_max']
if disk_max == 0:
# unlimited
pass
else:
# limit to certain number
pass
# Memory allocation
if tags.has_key('memlock_hard'):
mem = str(int(tags['memlock_hard']) * 1024) # hard limit in bytes
cgroups.write(self.name, 'memory.limit_in_bytes', mem, subsystem="memory")
if tags.has_key('memlock_soft'):
mem = str(int(tags['memlock_soft']) * 1024) # soft limit in bytes
cgroups.write(self.name, 'memory.soft_limit_in_bytes', mem, subsystem="memory")
# CPU allocation
# Only cpu_shares until figure out how to provide limits and guarantees
# (RT_SCHED?)
if tags.has_key('cpu_share'):
cpu_share = tags['cpu_share']
cgroups.write(self.name, 'cpu.shares', cpu_share)
# Call the upper configure method (ssh keys...)
Account.configure(self, rec)