[bitbake-devel] [PATCH 2/3] V5 Disk space monitoring
Robert Yang
liezhi.yang at windriver.com
Sun Feb 26 08:48:15 UTC 2012
Monitor disk availability and take action when the free disk space or
amount of free inode is running low, it is enabled when BB_DISKMON_DIRS
is set.
* Variable meanings(from meta-yocto/conf/local.conf.sample):
# Set the directories to monitor for disk usage, if more than one
# directories are mounted in the same device, then only one directory
# would be monitored since the monitor is based on the device.
# The format is:
# "action,directory,minimum_space,minimum_free_inode"
#
# The "action" must be set and should be one of:
# ABORT: Immediately abort
# STOPTASKS: The new tasks can't be executed any more, will stop the build
# when the running tasks have been done.
# WARN: show warnings (see BB_DISKMON_WARNINTERVAL for more information)
#
# The "directory" must be set, any directory is OK.
#
# Either "minimum_space" or "minimum_free_inode" (or both of them)
# should be set, otherwise the monitor would not be enabled,
# the unit can be G, M, K or none, but do NOT use GB, MB or KB
# (B is not needed).
#BB_DISKMON_DIRS = "STOPTASKS,${TMPDIR},1G,100K WARN,${SSTATE_DIR},1G,100K"
#
# Set disk space and inode interval (only works when the action is "WARN",
# the unit can be G, M, or K, but do NOT use the GB, MB or KB
# (B is not needed), the format is:
# "disk_space_interval, disk_inode_interval", the default value is
# "50M,5K" which means that it would warn when the free space is
# lower than the minimum space(or inode), and would repeat the action
# when the disk space reduces 50M (or the amount of inode reduces 5k)
# again.
#BB_DISKMON_WARNINTERVAL = "50M,5K"
[YOCTO #1589]
Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
bitbake/lib/bb/monitordisk.py | 237 +++++++++++++++++++++++++++++++++++++++++
bitbake/lib/bb/runqueue.py | 7 ++
2 files changed, 244 insertions(+), 0 deletions(-)
create mode 100644 bitbake/lib/bb/monitordisk.py
diff --git a/bitbake/lib/bb/monitordisk.py b/bitbake/lib/bb/monitordisk.py
new file mode 100644
index 0000000..04f090c
--- /dev/null
+++ b/bitbake/lib/bb/monitordisk.py
@@ -0,0 +1,237 @@
+#!/usr/bin/env python
+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright (C) 2012 Robert Yang
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+import os, logging, re, sys
+import bb
+logger = logging.getLogger("BitBake.Monitor")
+
+def printErr(info):
+ logger.error("%s\n Disk space monitor will NOT be enabled" % info)
+
+def convertGMK(unit):
+
+ """ Convert the space unit G, M, K, the unit is case-insensitive """
+
+ unitG = re.match('([1-9][0-9]*)[gG]\s?$', unit)
+ if unitG:
+ return int(unitG.group(1)) * (1024 ** 3)
+ unitM = re.match('([1-9][0-9]*)[mM]\s?$', unit)
+ if unitM:
+ return int(unitM.group(1)) * (1024 ** 2)
+ unitK = re.match('([1-9][0-9]*)[kK]\s?$', unit)
+ if unitK:
+ return int(unitK.group(1)) * 1024
+ unitN = re.match('([1-9][0-9]*)\s?$', unit)
+ if unitN:
+ return int(unitN.group(1))
+ else:
+ return None
+
+def getMountedDev(path):
+
+ """ Get the device mounted at the path, uses /proc/mounts """
+
+ # Get the mount point of the filesystem containing path
+ # st_dev is the ID of device containing file
+ parentDev = os.stat(path).st_dev
+ currentDev = parentDev
+ # When the current directory's device is different from the
+ # parrent's, then the current directory is a mount point
+ while parentDev == currentDev:
+ mountPoint = path
+ # Use dirname to get the parrent's directory
+ path = os.path.dirname(path)
+ # Reach the "/"
+ if path == mountPoint:
+ break
+ parentDev= os.stat(path).st_dev
+
+ try:
+ with open("/proc/mounts", "r") as ifp:
+ for line in ifp:
+ procLines = line.rstrip('\n').split()
+ if procLines[1] == mountPoint:
+ return procLines[0]
+ except EnvironmentError:
+ pass
+ return None
+
+def getDiskData(BBDirs, configuration):
+
+ """Prepare disk data for disk space monitor"""
+
+ # Save the device IDs, need the ID to be unique (the dictionary's key is
+ # unique), so that when more than one directories are located in the same
+ # device, we just monitor it once
+ devDict = {}
+ for pathSpaceInode in BBDirs.split():
+ # The input format is: "dir,space,inode", dir is a must, space
+ # and inode are optional
+ pathSpaceInodeRe = re.match('([^,]*),([^,]*),([^,]*),?(.*)', pathSpaceInode)
+ if not pathSpaceInodeRe:
+ printErr("Invalid value in BB_DISKMON_DIRS: %s" % pathSpaceInode)
+ return None
+
+ action = pathSpaceInodeRe.group(1)
+ if action not in ("ABORT", "STOPTASKS", "WARN"):
+ printErr("Unknown disk space monitor action: %s" % action)
+ return None
+
+ path = os.path.realpath(pathSpaceInodeRe.group(2))
+ if not path:
+ printErr("Invalid path value in BB_DISKMON_DIRS: %s" % pathSpaceInode)
+ return None
+
+ # The disk space or inode is optional, but it should have a correct
+ # value once it is specified
+ minSpace = pathSpaceInodeRe.group(3)
+ if minSpace:
+ minSpace = convertGMK(minSpace)
+ if not minSpace:
+ printErr("Invalid disk space value in BB_DISKMON_DIRS: %s" % pathSpaceInodeRe.group(3))
+ return None
+ else:
+ # 0 means that it is not specified
+ minSpace = None
+
+ minInode = pathSpaceInodeRe.group(4)
+ if minInode:
+ minInode = convertGMK(minInode)
+ if not minInode:
+ printErr("Invalid inode value in BB_DISKMON_DIRS: %s" % pathSpaceInodeRe.group(4))
+ return None
+ else:
+ # 0 means that it is not specified
+ minInode = None
+
+ if minSpace is None and minInode is None:
+ printErr("No disk space or inode value in found BB_DISKMON_DIRS: %s" % pathSpaceInode)
+ return None
+ # mkdir for the directory since it may not exist, for example the
+ # DL_DIR may not exist at the very beginning
+ if not os.path.exists(path):
+ bb.utils.mkdirhier(path)
+ mountedDev = getMountedDev(path)
+ devDict[mountedDev] = action, path, minSpace, minInode
+
+ return devDict
+
+def getInterval(configuration):
+
+ """ Get the disk space interval """
+
+ interval = configuration.getVar("BB_DISKMON_WARNINTERVAL", 1)
+ if not interval:
+ # The default value is 50M and 5K.
+ return 50 * 1024 * 1024, 5 * 1024
+ else:
+ # The disk space or inode interval is optional, but it should
+ # have a correct value once it is specified
+ intervalRe = re.match('([^,]*),?\s*(.*)', interval)
+ if intervalRe:
+ intervalSpace = intervalRe.group(1)
+ if intervalSpace:
+ intervalSpace = convertGMK(intervalSpace)
+ if not intervalSpace:
+ printErr("Invalid disk space interval value in BB_DISKMON_WARNINTERVAL: %s" % intervalRe.group(1))
+ return None, None
+ intervalInode = intervalRe.group(2)
+ if intervalInode:
+ intervalInode = convertGMK(intervalInode)
+ if not intervalInode:
+ printErr("Invalid disk inode interval value in BB_DISKMON_WARNINTERVAL: %s" % intervalRe.group(2))
+ return None, None
+ return intervalSpace, intervalInode
+ else:
+ printErr("Invalid interval value in BB_DISKMON_WARNINTERVAL: %s" % interval)
+ return None, None
+
+class diskMonitor:
+
+ """Prepare the disk space monitor data"""
+
+ def __init__(self, configuration):
+
+ self.enableMonitor = False
+
+ BBDirs = configuration.getVar("BB_DISKMON_DIRS", 1) or None
+ if BBDirs:
+ self.devDict = getDiskData(BBDirs, configuration)
+ if self.devDict:
+ self.spaceInterval, self.inodeInterval = getInterval(configuration)
+ if self.spaceInterval and self.inodeInterval:
+ self.enableMonitor = True
+ # These are for saving the previous disk free space and inode, we
+ # use them to avoid print too many warning messages
+ self.preFreeS = {}
+ self.preFreeI = {}
+ # This is for STOPTASKS and ABORT, to avoid print the message repeatly
+ # during waiting the tasks to finish
+ self.checked = {}
+ for dev in self.devDict:
+ self.preFreeS[dev] = 0
+ self.preFreeI[dev] = 0
+ self.checked[dev] = False
+ if self.spaceInterval is None and self.inodeInterval is None:
+ self.enableMonitor = False
+
+ def check(self, rq):
+
+ """ Take action for the monitor """
+
+ if self.enableMonitor:
+ for dev in self.devDict:
+ st = os.statvfs(self.devDict[dev][1])
+
+ # The free space, float point number
+ freeSpace = st.f_bavail * st.f_frsize
+
+ if self.devDict[dev][2] and freeSpace < self.devDict[dev][2]:
+ # Always show warning, the self.checked would always be False if the action is WARN
+ if self.preFreeS[dev] == 0 or self.preFreeS[dev] - freeSpace > self.spaceInterval and not self.checked[dev]:
+ logger.warn("The free space of %s is running low (%.3fGB left)" % (dev, freeSpace / 1024 / 1024 / 1024.0))
+ self.preFreeS[dev] = freeSpace
+
+ if self.devDict[dev][0] == "STOPTASKS" and not self.checked[dev]:
+ logger.error("No new tasks can be excuted since the disk space monitor action is \"STOPTASKS\"!")
+ self.checked[dev] = True
+ rq.finish_runqueue(False)
+ elif self.devDict[dev][0] == "ABORT" and not self.checked[dev]:
+ logger.error("Immediately abort since the disk space monitor action is \"ABORT\"!")
+ self.checked[dev] = True
+ rq.finish_runqueue(True)
+
+ # The free inodes, float point number
+ freeInode = st.f_favail
+
+ if self.devDict[dev][3] and freeInode < self.devDict[dev][3]:
+ # Always show warning, the self.checked would always be False if the action is WARN
+ if self.preFreeI[dev] == 0 or self.preFreeI[dev] - freeInode > self.inodeInterval and not self.checked[dev]:
+ logger.warn("The free inode of %s is running low (%.3fK left)" % (dev, freeInode / 1024.0))
+ self.preFreeI[dev] = freeInode
+
+ if self.devDict[dev][0] == "STOPTASKS" and not self.checked[dev]:
+ logger.error("No new tasks can be excuted since the disk space monitor action is \"STOPTASKS\"!")
+ self.checked[dev] = True
+ rq.finish_runqueue(False)
+ elif self.devDict[dev][0] == "ABORT" and not self.checked[dev]:
+ logger.error("Immediately abort since the disk space monitor action is \"ABORT\"!")
+ self.checked[dev] = True
+ rq.finish_runqueue(True)
+ return
diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py
index 1c3187d..f08f93a 100644
--- a/bitbake/lib/bb/runqueue.py
+++ b/bitbake/lib/bb/runqueue.py
@@ -31,6 +31,7 @@ import fcntl
import logging
import bb
from bb import msg, data, event
+from bb import monitordisk
bblogger = logging.getLogger("BitBake")
logger = logging.getLogger("BitBake.RunQueue")
@@ -775,6 +776,9 @@ class RunQueue:
self.state = runQueuePrepare
+ # For disk space monitor
+ self.dm = monitordisk.diskMonitor(cfgData)
+
def check_stamps(self):
unchecked = {}
current = []
@@ -949,6 +953,9 @@ class RunQueue:
else:
self.rqexe = RunQueueExecuteScenequeue(self)
+ if self.state in [runQueueSceneRun, runQueueRunning, runQueueCleanUp]:
+ self.dm.check(self)
+
if self.state is runQueueSceneRun:
retval = self.rqexe.execute()
--
1.7.4.1
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