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storage: replace sizelimit with reserved_space, make the stats 'disk_avail' number incorporate this reservation

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This commit is contained in:
Brian Warner
2008-12-01 17:24:21 -07:00
parent 39a41f1d85
commit cfba882b30
12 changed files with 172 additions and 131 deletions
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37
src/allmydata/client.py
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@ -1,5 +1,5 @@
import os, stat, time, re, weakref
import os, stat, time, weakref
from allmydata.interfaces import RIStorageServer
from allmydata import node
@ -19,6 +19,7 @@ from allmydata.offloaded import Helper
from allmydata.control import ControlServer
from allmydata.introducer.client import IntroducerClient
from allmydata.util import hashutil, base32, pollmixin, cachedir
from allmydata.util.abbreviate import parse_abbreviated_size
from allmydata.uri import LiteralFileURI
from allmydata.dirnode import NewDirectoryNode
from allmydata.mutable.node import MutableFileNode, MutableWatcher
@ -105,7 +106,6 @@ class Client(node.Node, pollmixin.PollMixin):
self.set_config("storage", "enabled", "false")
if os.path.exists(os.path.join(self.basedir, "readonly_storage")):
self.set_config("storage", "readonly", "true")
copy("sizelimit", "storage", "sizelimit")
if os.path.exists(os.path.join(self.basedir, "debug_discard_storage")):
self.set_config("storage", "debug_discard", "true")
if os.path.exists(os.path.join(self.basedir, "run_helper")):
@ -151,27 +151,22 @@ class Client(node.Node, pollmixin.PollMixin):
storedir = os.path.join(self.basedir, self.STOREDIR)
sizelimit = None
data = self.get_config("storage", "sizelimit", None)
if data:
m = re.match(r"^(\d+)([kKmMgG]?[bB]?)$", data)
if not m:
log.msg("SIZELIMIT_FILE contains unparseable value %s" % data)
else:
number, suffix = m.groups()
suffix = suffix.upper()
if suffix.endswith("B"):
suffix = suffix[:-1]
multiplier = {"": 1,
"K": 1000,
"M": 1000 * 1000,
"G": 1000 * 1000 * 1000,
}[suffix]
sizelimit = int(number) * multiplier
data = self.get_config("storage", "reserved_space", None)
reserved = None
try:
reserved = parse_abbreviated_size(data)
except ValueError:
log.msg("[storage]reserved_space= contains unparseable value %s"
% data)
if reserved is None:
reserved = 0
discard = self.get_config("storage", "debug_discard", False,
boolean=True)
ss = StorageServer(storedir, sizelimit, discard, readonly,
self.stats_provider)
ss = StorageServer(storedir,
reserved_space=reserved,
discard_storage=discard,
readonly_storage=readonly,
stats_provider=self.stats_provider)
self.add_service(ss)
d = self.when_tub_ready()
# we can't do registerReference until the Tub is ready