vdsm-patches October 2014

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Change in vdsm[master]: GuestIF Refactoring
by Vinzenz Feenstra 08 Oct '16

08 Oct '16

Vinzenz Feenstra has uploaded a new change for review. Change subject: GuestIF Refactoring ...................................................................... GuestIF Refactoring Change-Id: Ib357d770a26ef1dc80b89a32bf6808551a7d622d Signed-off-by: Vinzenz Feenstra <vfeenstr(a)redhat.com> --- M vdsm/guestIF.py 1 file changed, 114 insertions(+), 76 deletions(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/18/24618/1 diff --git a/vdsm/guestIF.py b/vdsm/guestIF.py index 229a55d..96ad68c 100644 --- a/vdsm/guestIF.py +++ b/vdsm/guestIF.py @@ -39,6 +39,115 @@ union(set(range(0x86, 0x9F + 1))) +class UnknownMessageError(Exception): + def __init__(self, message, args): + Exception.__init__(self, 'Unknown or unsupported guest agent message ' + '"%s" received with args "%s"' % (message, + str(args))) + + +class MessageHandler(object): + def __init__(self, agent): + self.log = agent.log + self._agent = agent + + def __call__(self, message, args): + handler = self.getattr(self, message.replace('-', '_'), None) + if handler: + handler(args) + else: + raise UnknownMessageError(message, args) + + def applications(self, args): + self._agent.guestInfo['appsList'] = args['applications'] + + def fqdn(self, args): + self._agent.guestInfo['guestFQDN'] = args['fqdn'] + + def host_name(self, args): + self._agent.guestInfo['guestName'] = args['name'] + + def os_version(self, args): + self._agent.guestInfo['guestOs'] = args['version'] + + def session_lock(self, args): + self.agent.guestInfo['session'] = 'Locked' + + def session_logoff(self, args): + self.agent.guestInfo['session'] = 'LoggedOff' + + def session_logon(self, args): + self.agent.guestInfo['session'] = 'UserLoggedOn' + + def session_unlock(self, args): + self.agent.guestInfo['session'] = 'Active' + + def session_shutdown(self, args): + self.log.debug('Guest system shuts down') + + def session_startup(self, args): + self.log.debug('Guest system started or restarted') + + def uninstalled(self, args): + self.log.debug('Guest agent was uninstalled') + self._agent.guestInfo['appsList'] = [] + + def heartbeat(self, args): + self._agent.guestStatus = 'Up' + self._agent.guestInfo['memUsage'] = int(args['free-ram']) + # ovirt-guest-agent reports the following fields in 'memory-stat': + # 'mem_total', 'mem_free', 'mem_unused', 'swap_in', 'swap_out', + # 'pageflt' and 'majflt' + if 'memory-stat' in args: + for (k, v) in args['memory-stat'].iteritems(): + # Convert the value to string since 64-bit integer is not + # supported in XMLRPC + self._agent.guestInfo['memoryStats'][k] = str(v) + + if 'apiVersion' in args: + # The guest agent supports API Versioning + self._agent._handleAPIVersion(args['apiVersion']) + elif self._agent.effectiveApiVersion != _IMPLICIT_API_VERSION_ZERO: + # Older versions of the guest agent (before the introduction + # of API versioning) do not report this field + # Disable the API if not already disabled (e.g. after + # downgrade of the guest agent) + self.log.debug("API versioning no longer reported by guest.") + self._agent.effectiveApiVersion = _IMPLICIT_API_VERSION_ZERO + + def network_interfaces(self, args): + interfaces = [] + old_ips = '' + for iface in args['interfaces']: + iface['inet'] = iface.get('inet', []) + iface['inet6'] = iface.get('inet6', []) + interfaces.append(iface) + # Provide the old information which includes + # only the IP addresses. + old_ips += ' '.join(iface['inet']) + ' ' + self._agent.guestInfo['netIfaces'] = interfaces + self._agent.guestInfo['guestIPs'] = old_ips.strip() + + def active_user(self, args): + currentUser = args['name'] + if ((currentUser != self._agent.guestInfo['username']) and + not (currentUser == 'Unknown' and + self._agent.guestInfo['username'] == 'None')): + self._agent.guestInfo['username'] = currentUser + self._agent.guestInfo['lastLogin'] = time.time() + self.log.debug("username: %s", repr(self.guestInfo['username'])) + + def disks_usage(self, args): + disks = [] + for disk in args['disks']: + # Converting to string because XML-RPC doesn't support 64-bit + # integers. + disk['total'] = str(disk['total']) + disk['used'] = str(disk['used']) + disks.append(disk) + self._agent.guestInfo['disksUsage'] = disks + + def _filterXmlChars(u): """ The set of characters allowed in XML documents is described in @@ -109,6 +218,7 @@ def __init__(self, socketName, channelListener, log, user='Unknown', ips='', connect=True): + self.handler = MessageHandler(self) self.effectiveApiVersion = _IMPLICIT_API_VERSION_ZERO self.log = log self._socketName = socketName @@ -223,82 +333,10 @@ self.log.log(logging.TRACE, "Guest's message %s: %s", message, args) if self.guestStatus is None: self.guestStatus = 'Up' - if message == 'heartbeat': - self.guestStatus = 'Up' - self.guestInfo['memUsage'] = int(args['free-ram']) - # ovirt-guest-agent reports the following fields in 'memory-stat': - # 'mem_total', 'mem_free', 'mem_unused', 'swap_in', 'swap_out', - # 'pageflt' and 'majflt' - if 'memory-stat' in args: - for (k, v) in args['memory-stat'].iteritems(): - # Convert the value to string since 64-bit integer is not - # supported in XMLRPC - self.guestInfo['memoryStats'][k] = str(v) - - if 'apiVersion' in args: - # The guest agent supports API Versioning - self._handleAPIVersion(args['apiVersion']) - elif self.effectiveApiVersion != _IMPLICIT_API_VERSION_ZERO: - # Older versions of the guest agent (before the introduction - # of API versioning) do not report this field - # Disable the API if not already disabled (e.g. after - # downgrade of the guest agent) - self.log.debug("API versioning no longer reported by guest.") - self.effectiveApiVersion = _IMPLICIT_API_VERSION_ZERO - elif message == 'host-name': - self.guestInfo['guestName'] = args['name'] - elif message == 'os-version': - self.guestInfo['guestOs'] = args['version'] - elif message == 'network-interfaces': - interfaces = [] - old_ips = '' - for iface in args['interfaces']: - iface['inet'] = iface.get('inet', []) - iface['inet6'] = iface.get('inet6', []) - interfaces.append(iface) - # Provide the old information which includes - # only the IP addresses. - old_ips += ' '.join(iface['inet']) + ' ' - self.guestInfo['netIfaces'] = interfaces - self.guestInfo['guestIPs'] = old_ips.strip() - elif message == 'applications': - self.guestInfo['appsList'] = args['applications'] - elif message == 'active-user': - currentUser = args['name'] - if ((currentUser != self.guestInfo['username']) and - not (currentUser == 'Unknown' and - self.guestInfo['username'] == 'None')): - self.guestInfo['username'] = currentUser - self.guestInfo['lastLogin'] = time.time() - self.log.debug("username: %s", repr(self.guestInfo['username'])) - elif message == 'session-logon': - self.guestInfo['session'] = "UserLoggedOn" - elif message == 'session-lock': - self.guestInfo['session'] = "Locked" - elif message == 'session-unlock': - self.guestInfo['session'] = "Active" - elif message == 'session-logoff': - self.guestInfo['session'] = "LoggedOff" - elif message == 'uninstalled': - self.log.debug("RHEV agent was uninstalled.") - self.guestInfo['appsList'] = [] - elif message == 'session-startup': - self.log.debug("Guest system is started or restarted.") - elif message == 'fqdn': - self.guestInfo['guestFQDN'] = args['fqdn'] - elif message == 'session-shutdown': - self.log.debug("Guest system shuts down.") - elif message == 'disks-usage': - disks = [] - for disk in args['disks']: - # Converting to string because XML-RPC doesn't support 64-bit - # integers. - disk['total'] = str(disk['total']) - disk['used'] = str(disk['used']) - disks.append(disk) - self.guestInfo['disksUsage'] = disks - else: - self.log.error('Unknown message type %s', message) + try: + self.handler(message, args) + except UnknownMessageError as e: + self.log.error(e) def stop(self): self._stopped = True -- To view, visit http://gerrit.ovirt.org/24618 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: Ib357d770a26ef1dc80b89a32bf6808551a7d622d Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Vinzenz Feenstra <vfeenstr(a)redhat.com>

5 13

Change in vdsm[master]: libvirtconnection: Replace assert with AssertionError
by Nir Soffer 25 Sep '16

25 Sep '16

Nir Soffer has uploaded a new change for review. Change subject: libvirtconnection: Replace assert with AssertionError ...................................................................... libvirtconnection: Replace assert with AssertionError The code wrongly assumed that assert always exists. When running in optimized mode, the check would be skipped, and instead of getting an AssertionError, which is the expected error for programmer error (starting the eventloop twice), we could get a confusing RuntimeException or RuntimeError from Thread.start (depending on Python version). RuntimeError misused in the standard library for all kinds of errors that do not have builtin errors. It is particularry bad option when used for usage error. Change-Id: Icf1564f81f4c1fbf77ccaff6d93c047a02d946da Signed-off-by: Nir Soffer <nsoffer(a)redhat.com> --- M lib/vdsm/libvirtconnection.py 1 file changed, 2 insertions(+), 1 deletion(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/64/34364/1 diff --git a/lib/vdsm/libvirtconnection.py b/lib/vdsm/libvirtconnection.py index 5430c82..009f8b7 100644 --- a/lib/vdsm/libvirtconnection.py +++ b/lib/vdsm/libvirtconnection.py @@ -37,7 +37,8 @@ self.__thread = None def start(self): - assert not self.run + if self.run: + raise AssertionError("EventLoop is running") self.__thread = threading.Thread(target=self.__run, name="libvirtEventLoop") self.__thread.setDaemon(True) -- To view, visit http://gerrit.ovirt.org/34364 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: Icf1564f81f4c1fbf77ccaff6d93c047a02d946da Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Nir Soffer <nsoffer(a)redhat.com>

6 8

Change in vdsm[master]: fencing: Make getHostLeaseStatus API public
by Nir Soffer 18 Sep '16

18 Sep '16

Nir Soffer has uploaded a new change for review. Change subject: fencing: Make getHostLeaseStatus API public ...................................................................... fencing: Make getHostLeaseStatus API public Getting host lease status will allow engine to make smarter decisions when a host is non-responsive by using a proxy host to get the non-responsive host status. See http://pastebin.com/KqqeAdSu for example output from this API. Change-Id: I415c1fee6256bf8d4e03ee542cc58e193162e9b8 Signed-off-by: Nir Soffer <nsoffer(a)redhat.com> --- M client/vdsClient.py M vdsm/API.py M vdsm/rpc/BindingXMLRPC.py M vdsm/rpc/Bridge.py M vdsm/rpc/vdsmapi-schema.json 5 files changed, 62 insertions(+), 0 deletions(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/57/29157/1 diff --git a/client/vdsClient.py b/client/vdsClient.py index 2c09b28..aea1503 100644 --- a/client/vdsClient.py +++ b/client/vdsClient.py @@ -1760,6 +1760,18 @@ status = self.s.stopMonitoringDomain(sdUUID) return status['status']['code'], status['status']['message'] + def getHostLeaseStatus(self, args): + domains = {} + for pair in args: + sdUUID, hostId = pair.split('=', 1) + domains[sdUUID] = int(hostId) + response = self.s.getHostLeaseStatus(domains) + if response['status']['code']: + print "Cannot get host storage liveliness" + return response['status']['code'], response['status']['message'] + pp.pprint(response['domains']) + return 0, '' + def snapshot(self, args): vmUUID, sdUUID, imgUUID, baseVolUUID, volUUID = args @@ -2579,6 +2591,11 @@ ('<sdUUID>', 'Stop monitoring SD: sdUUID' )), + 'getHostLeaseStatus': (serv.getHostLeaseStatus, + ('<sdUUID>=<hostId> [<sdUUID>=<hostId>] ...', + 'Returns host lease status for hostId on ' + 'each domain.' + )), 'snapshot': (serv.snapshot, ('<vmId> <sdUUID> <imgUUID> <baseVolUUID> <volUUID>', 'Take a live snapshot' diff --git a/vdsm/API.py b/vdsm/API.py index e739294..0b44459 100644 --- a/vdsm/API.py +++ b/vdsm/API.py @@ -1497,6 +1497,9 @@ def stopMonitoringDomain(self, sdUUID): return self._irs.stopMonitoringDomain(sdUUID) + def getHostLeaseStatus(self, domains): + return self._irs.getHostLeaseStatus(domains) + def getLVMVolumeGroups(self, storageType=None): return self._irs.getVGList(storageType) diff --git a/vdsm/rpc/BindingXMLRPC.py b/vdsm/rpc/BindingXMLRPC.py index c1c7490..a06a3b4 100644 --- a/vdsm/rpc/BindingXMLRPC.py +++ b/vdsm/rpc/BindingXMLRPC.py @@ -917,6 +917,10 @@ api = API.Global() return api.stopMonitoringDomain(sdUUID) + def getHostLeaseStatus(self, domains, options=None): + api = API.Global() + return api.getHostLeaseStatus(domains) + def vgsGetList(self, storageType=None, options=None): api = API.Global() return api.getLVMVolumeGroups(storageType) @@ -1070,6 +1074,7 @@ (self.storageRepoGetStats, 'repoStats'), (self.startMonitoringDomain, 'startMonitoringDomain'), (self.stopMonitoringDomain, 'stopMonitoringDomain'), + (self.getHostLeaseStatus, 'getHostLeaseStatus'), (self.vgsGetList, 'getVGList'), (self.devicesGetList, 'getDeviceList'), (self.devicesGetVisibility, 'getDevicesVisibility'), diff --git a/vdsm/rpc/Bridge.py b/vdsm/rpc/Bridge.py index 7e898de..ba700d1 100644 --- a/vdsm/rpc/Bridge.py +++ b/vdsm/rpc/Bridge.py @@ -349,6 +349,7 @@ 'Host_getStorageRepoStats': {'ret': Host_getStorageRepoStats_Ret}, 'Host_startMonitoringDomain': {}, 'Host_stopMonitoringDomain': {}, + 'Host_getHostLeaseStatus': {'ret': 'domains'}, 'Host_getVMList': {'call': Host_getVMList_Call, 'ret': Host_getVMList_Ret}, 'Host_getVMFullList': {'call': Host_getVMFullList_Call, 'ret': 'vmList'}, 'Host_getAllVmStats': {'ret': 'statsList'}, diff --git a/vdsm/rpc/vdsmapi-schema.json b/vdsm/rpc/vdsmapi-schema.json index 0c8a6f6..7617185 100644 --- a/vdsm/rpc/vdsmapi-schema.json +++ b/vdsm/rpc/vdsmapi-schema.json @@ -2052,6 +2052,42 @@ 'returns': ''} ## +# @HostIdMap: +# +# A mapping of hostId indexed by domain UUID. +# +# Since: 4.15.0 +## +{'map': 'HostIdMap', + 'key': 'UUID', 'value': 'int'} + +## +# @HostLeaseStatusMap: +# +# A mapping of status codes indexed by domain UUID. +# +# Since: 4.15.0 +## +{'map': 'HostLeaseStatusMap', + 'key': 'UUID', 'value': 'str'} + +## +# @Host.getHostLeaseStatus: +# +# Returns host status for for specified domains +# +# @domains: A mapping of hostId indexed by domain UUID +# +# Returns: +# Host status code for each domain +# +# Since: 4.15.0 +## +{'command': {'class': 'Host', 'name': 'getHostLeaseStatus'}, + 'data': {'domains': 'HostIdMap'} + 'returns': {'domains': 'HostLeaseStatusMap'}} + +## # @VmStatus: # # An enumeration of possible virtual machine statuses. -- To view, visit http://gerrit.ovirt.org/29157 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I415c1fee6256bf8d4e03ee542cc58e193162e9b8 Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Nir Soffer <nsoffer(a)redhat.com>

5 14

Change in vdsm[master]: vdsm: add eventfd and EventFile synchronization
by Federico Simoncelli 12 Sep '16

12 Sep '16

Federico Simoncelli has uploaded a new change for review. Change subject: vdsm: add eventfd and EventFile synchronization ...................................................................... vdsm: add eventfd and EventFile synchronization Change-Id: I0d237f13c42b1f4505c90d30c6d3c3ecbd1e9fa7 Signed-off-by: Federico Simoncelli <fsimonce(a)redhat.com> --- M lib/vdsm/Makefile.am A lib/vdsm/eventfd.py M tests/Makefile.am A tests/eventfdTests.py 4 files changed, 251 insertions(+), 0 deletions(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/87/33687/1 diff --git a/lib/vdsm/Makefile.am b/lib/vdsm/Makefile.am index 4bebf28..e712cad 100644 --- a/lib/vdsm/Makefile.am +++ b/lib/vdsm/Makefile.am @@ -25,6 +25,7 @@ __init__.py \ compat.py \ define.py \ + eventfd.py \ exception.py \ ipwrapper.py \ libvirtconnection.py \ diff --git a/lib/vdsm/eventfd.py b/lib/vdsm/eventfd.py new file mode 100644 index 0000000..b2a7084 --- /dev/null +++ b/lib/vdsm/eventfd.py @@ -0,0 +1,140 @@ +# +# Copyright 2014 Red Hat, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# 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 +# +# Refer to the README and COPYING files for full details of the license +# + +"""\ +This module provides the support for eventfd(2). + +More information about eventfd and usage examples can be found in the +eventfd(2) man page. + +The EventFile class provides a single synchronization object exposing +the python Event interface and associated eventfds. + +The eventfd() context manager returns a file descriptor that can be +used to provide the event notice to select, poll and epoll, e.g. + + import os + import sys + import select + import threading + import time + from vdsm.eventfd import EventFile, DATASIZE + + e = EventFile() + p = select.epoll() + + threading.Timer(5, e.set).start() + + with e.eventfd() as efd: + p.register(efd, select.EPOLLIN) + p.register(sys.stdin.fileno(), select.EPOLLIN) + + print "Echoing lines until event is received" + event_received = False + + while not event_received: + for fileno, event in p.poll(): + if not event & select.EPOLLIN: + continue + + if fileno == efd: + os.read(efd, DATASIZE) + event_received = True + elif fileno == sys.stdin.fileno(): + print os.read(sys.stdin.fileno(), 1024), + + print "Event received!" + + +The Event set() semantic is preserved in the eventfd context manager: +if the event is set then the eventfd already contains the notification. +This is both to maintain the semantic and to avoid possible races as: + + if not e.is_set(): + with e.eventfd() as efd: + ... +""" + +import os +import ctypes +import threading + +from contextlib import contextmanager + +_libc = ctypes.CDLL('libc.so.6', use_errno=True) + +EFD_NONBLOCK = os.O_NONBLOCK +EFD_CLOEXEC = 02000000 # os.O_CLOEXEC in python 3.3 +EFD_SEMAPHORE = 00000001 + +DATASIZE = ctypes.sizeof(ctypes.c_ulonglong) + + +def eventfd(initval, flags): + return _libc.eventfd(initval, flags) + + +class EventFile(object): + def __init__(self, event=None): + self.__lock = threading.Lock() + self.__fds = set() + self.__event = event or threading.Event() + + @staticmethod + def __fire_event(fd): + os.write(fd, ctypes.c_ulonglong(1)) + + def open_eventfd(self): + with self.__lock: + fd = eventfd(0, 0) + + self.__fds.add(fd) + + if self.__event.is_set(): + self.__fire_event(fd) + + return fd + + @contextmanager + def eventfd(self): + fd = self.open_eventfd() + + yield fd + + with self.__lock: + self.__fds.remove(fd) + os.close(fd) + + def isSet(self): + return self.__event.isSet() + + is_set = isSet + + def set(self): + with self.__lock: + self.__event.set() + for fd in self.__fds: + self.__fire_event(fd) + + def clear(self): + self.__event.clear() + + def wait(self, timeout=None, balancing=True): + self.__event.wait(timeout) diff --git a/tests/Makefile.am b/tests/Makefile.am index 449d7b1..120712e 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -31,6 +31,7 @@ clientifTests.py \ configNetworkTests.py \ domainMonitorTests.py \ + eventfdTests.py \ fileVolumeTests.py \ fileUtilTests.py \ fuserTests.py \ diff --git a/tests/eventfdTests.py b/tests/eventfdTests.py new file mode 100644 index 0000000..be15248 --- /dev/null +++ b/tests/eventfdTests.py @@ -0,0 +1,109 @@ +# +# Copyright 2014 Red Hat, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# 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 +# +# Refer to the README and COPYING files for full details of the license +# + +import os +import select +from vdsm.eventfd import EventFile, DATASIZE +from nose.tools import timed, raises, TimeExpired + +TEST_TIMEOUT = 1 +WAIT_TIMEOUT = 2 + + +def test_set(): + e = EventFile() + e.set() + assert e.is_set() + assert e.isSet() + + +def text_clear(): + e = EventFile() + e.set() + assert e.is_set() + e.clear() + assert not e.is_set() + + +@timed(TEST_TIMEOUT) +def test_wait_set(): + e = EventFile() + e.set() + e.wait(WAIT_TIMEOUT) + + +@raises(TimeExpired) +@timed(TEST_TIMEOUT) +def test_wait_noset(): + e = EventFile() + e.wait(WAIT_TIMEOUT) + + +@timed(TEST_TIMEOUT) +def test_eventfd_earlyset(): + e = EventFile() + e.set() + with e.eventfd() as fd: + assert len(__select_and_read(fd)) == DATASIZE + + +@timed(TEST_TIMEOUT) +def test_eventfd_lateset(): + e = EventFile() + with e.eventfd() as fd: + e.set() + assert len(__select_and_read(fd)) == DATASIZE + + +@raises(TimeExpired) +@timed(TEST_TIMEOUT) +def test_eventfd_noset(): + e = EventFile() + with e.eventfd() as fd: + assert len(__select_and_read(fd)) != DATASIZE + + +@timed(TEST_TIMEOUT) +def test_eventfd_multiple(): + e = EventFile() + e.set() + with e.eventfd() as fd1: + assert len(__select_and_read(fd1)) == DATASIZE + with e.eventfd() as fd2: + assert len(__select_and_read(fd2)) == DATASIZE + with e.eventfd() as fd3: + assert len(__select_and_read(fd3)) == DATASIZE + + +@raises(TimeExpired) +@timed(TEST_TIMEOUT) +def test_eventfd_clear(): + e = EventFile() + e.set() + e.clear() + with e.eventfd() as fd: + assert len(__select_and_read(fd)) != DATASIZE + + +def __select_and_read(fd): + rd, wr, ex = select.select((fd,), (), (), WAIT_TIMEOUT) + if fd in rd: + return os.read(fd, DATASIZE) + return '' -- To view, visit http://gerrit.ovirt.org/33687 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I0d237f13c42b1f4505c90d30c6d3c3ecbd1e9fa7 Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Federico Simoncelli <fsimonce(a)redhat.com>

4 6

Change in vdsm[master]: utils: Add changehash function for change detection
by Nir Soffer 27 Aug '16

27 Aug '16

Nir Soffer has uploaded a new change for review. Change subject: utils: Add changehash function for change detection ...................................................................... utils: Add changehash function for change detection We use Python built-in hash to detect changes in vm state without sending the state in each response. This function is not suitable for this usage. Now we use generic utils.changehash(), implemented using md5 hexdigest. Change-Id: I2242a594383e2d2fe64e3a581f18b8ac662648b0 Signed-off-by: Nir Soffer <nsoffer(a)redhat.com> --- M lib/vdsm/utils.py M vdsm/virt/vm.py 2 files changed, 13 insertions(+), 2 deletions(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/45/33045/1 diff --git a/lib/vdsm/utils.py b/lib/vdsm/utils.py index 23c63e8..1b4a9d5 100644 --- a/lib/vdsm/utils.py +++ b/lib/vdsm/utils.py @@ -37,6 +37,7 @@ import glob import io import itertools +import hashlib import logging import re import sys @@ -1133,3 +1134,13 @@ flags = fcntl.fcntl(fd, fcntl.F_GETFL) flags |= os.O_NONBLOCK fcntl.fcntl(fd, fcntl.F_SETFL, flags) + + +def changehash(s): + """ + Returns a hash of string s, suitable for change detection. + + Tipically changehash(s) is sent to client frequently. When a client detect + that changehash(s) changed, it ask for s itself, which may be much bigger. + """ + return hashlib.md5(s).hexdigest() diff --git a/vdsm/virt/vm.py b/vdsm/virt/vm.py index 941f283..b1567f9 100644 --- a/vdsm/virt/vm.py +++ b/vdsm/virt/vm.py @@ -1500,7 +1500,7 @@ self.guestAgent = guestagent.GuestAgent( self._guestSocketFile, self.cif.channelListener, self.log) self._lastXMLDesc = '<domain><uuid>%s</uuid></domain>' % self.id - self._devXmlHash = '0' + self._devXmlHash = utils.changehash('') self._released = False self._releaseLock = threading.Lock() self.saveState() @@ -4495,7 +4495,7 @@ self._lastXMLDesc = self._dom.XMLDesc(0) devxml = _domParseStr(self._lastXMLDesc).childNodes[0]. \ getElementsByTagName('devices')[0] - self._devXmlHash = str(hash(devxml.toxml())) + self._devXmlHash = utils.changehash(devxml.toxml()) return self._lastXMLDesc -- To view, visit http://gerrit.ovirt.org/33045 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I2242a594383e2d2fe64e3a581f18b8ac662648b0 Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Nir Soffer <nsoffer(a)redhat.com>

9 26

Change in vdsm[master]: log: Use INFO log level as default
by Nir Soffer 27 Jul '16

27 Jul '16

Nir Soffer has uploaded a new change for review. Change subject: log: Use INFO log level as default ...................................................................... log: Use INFO log level as default The current logs are much too verbose which cause trouble for users, and make us look unprofessional. Mature project should not use debug log by default. To debug issues that are not clear enough using INFO logs, the relevant logger level can be modified on a user machine as needed. Change-Id: I767dcd9bad7b9fbeebb438e9ef13cb0ec3f042ee Signed-off-by: Nir Soffer <nsoffer(a)redhat.com> --- M vdsm/logger.conf.in 1 file changed, 4 insertions(+), 4 deletions(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/04/32504/1 diff --git a/vdsm/logger.conf.in b/vdsm/logger.conf.in index 64b154f..8e963dd 100644 --- a/vdsm/logger.conf.in +++ b/vdsm/logger.conf.in @@ -8,18 +8,18 @@ keys=long,simple,none,sysform [logger_root] -level=DEBUG +level=INFO handlers=syslog,logfile propagate=0 [logger_vds] -level=DEBUG +level=INFO handlers=syslog,logfile qualname=vds propagate=0 [logger_Storage] -level=DEBUG +level=INFO handlers=logfile qualname=Storage propagate=0 @@ -31,7 +31,7 @@ propagate=1 [logger_connectivity] -level=DEBUG +level=INFO handlers=connlogfile qualname=connectivity propagate=0 -- To view, visit http://gerrit.ovirt.org/32504 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I767dcd9bad7b9fbeebb438e9ef13cb0ec3f042ee Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Nir Soffer <nsoffer(a)redhat.com>

9 23

Change in vdsm[master]: tests: Add time per test if nose-timer is available
by asegurap＠redhat.com 02 Jul '16

02 Jul '16

Antoni Segura Puimedon has uploaded a new change for review. Change subject: tests: Add time per test if nose-timer is available ...................................................................... tests: Add time per test if nose-timer is available This patch adds an output like: resourceManagerTests.ResourceManagerTests.testStressTest: 12.8313s resourceManagerTests.ResourceManagerTests.testResourceAcquireTimeout: 1.0069s resourceManagerTests.ResourceManagerTests.testResourceLockSwitch: 0.0108s resourceManagerTests.ResourceManagerTests.testResourceAutorelease: 0.0101s resourceManagerTests.ResourceManagerTests.testResourceInvalidation: 0.0093s resourceManagerTests.ResourceManagerTests.testCrashOnSwitch: 0.0067s resourceManagerTests.ResourceManagerTests.testResourceSwitchLockTypeFail: 0.0062s resourceManagerTests.ResourceManagerTests.testCancelExclusiveBetweenShared: 0.0049s resourceManagerTests.ResourceManagerTests.testAcquireResourceExclusive: 0.0042s resourceManagerTests.ResourceManagerTests.testCancelRequest: 0.0031s resourceManagerTests.ResourceManagerTests.testRequestRefCmp: 0.0030s resourceManagerTests.ResourceManagerTests.testRequestRecancel: 0.0030s resourceManagerTests.ResourceManagerTests.testResourceStatuses: 0.0029s resourceManagerTests.ResourceManagerTests.testAccessAttributeNotExposedByRequestRef: 0.0029s resourceManagerTests.ResourceManagerTests.testFailCreateAfterSwitch: 0.0025s resourceManagerTests.ResourceManagerTests.testRequestWithBadCallbackOnCancel: 0.0025s resourceManagerTests.ResourceManagerTests.testAcquireResourceShared: 0.0023s resourceManagerTests.ResourceManagerTests.testRereleaseResource: 0.0022s resourceManagerTests.ResourceManagerTests.testResourceWrapper: 0.0020s resourceManagerTests.ResourceManagerTests.testRequestWithBadCallbackOnGrant: 0.0020s resourceManagerTests.ResourceManagerTests.testRequestRefStr: 0.0020s resourceManagerTests.ResourceManagerTests.testAccessAttributeNotExposedByWrapper: 0.0019s resourceManagerTests.ResourceManagerTests.testErrorInFactory: 0.0017s resourceManagerTests.ResourceManagerTests.testAcquireNonExistingResource: 0.0016s resourceManagerTests.ResourceManagerTests.testRequestInvalidResource: 0.0015s resourceManagerTests.ResourceManagerTests.testRequestRegrant: 0.0015s resourceManagerTests.ResourceManagerTests.testResourceAcquireInvalidTimeout: 0.0014s resourceManagerTests.ResourceManagerTests.testReleaseInvalidResource: 0.0014s resourceManagerTests.ResourceManagerTests.testSingleton: 0.0014s resourceManagerTests.ResourceManagerTests.testForceRegisterNamespace: 0.0013s resourceManagerTests.ResourceManagerTests.testListNamespaces: 0.0013s resourceManagerTests.ResourceManagerTests.testReregisterNamespace: 0.0012s resourceManagerTests.ResourceManagerTests.testRegisterInvalidNamespace: 0.0012s At the end of the usual tests if nose-timer is detected in the system. It shows the tests over 500ms in yellow and those over 5s in red. If you want to get this output, do: pip install nose-timer Change-Id: I4960b30532a84abd259fb268c7e40a1751847a96 Signed-off-by: Antoni S. Puimedon <asegurap(a)redhat.com> --- M tests/run_tests_local.sh.in M tests/testrunner.py 2 files changed, 18 insertions(+), 1 deletion(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/71/30171/1 diff --git a/tests/run_tests_local.sh.in b/tests/run_tests_local.sh.in index d19f22c..f51473d 100644 --- a/tests/run_tests_local.sh.in +++ b/tests/run_tests_local.sh.in @@ -7,4 +7,9 @@ @top_srcdir@/tests/makecert.sh fi -PYTHONDONTWRITEBYTECODE=1 LC_ALL=C PYTHONPATH="@top_srcdir@/lib:@top_srcdir@/vdsm:@top_srcdir@/client:@top_srcdir@/vdsm_api:$PYTHONPATH" "$PYTHON_EXE" @top_srcdir@/tests/testrunner.py --local-modules $@ +python -c 'import nosetimer' > /dev/null 2>&1 +if [ $? -eq 0 ]; then + EXTRA_ARGS='--with-timer' +fi + +PYTHONDONTWRITEBYTECODE=1 LC_ALL=C PYTHONPATH="@top_srcdir@/lib:@top_srcdir@/vdsm:@top_srcdir@/client:@top_srcdir@/vdsm_api:$PYTHONPATH" "$PYTHON_EXE" @top_srcdir@/tests/testrunner.py --local-modules $@ "$EXTRA_ARGS" diff --git a/tests/testrunner.py b/tests/testrunner.py index eed743f..ec24c2b 100644 --- a/tests/testrunner.py +++ b/tests/testrunner.py @@ -40,6 +40,16 @@ from nose import config from nose import core from nose import result +try: + from nosetimer.plugin import TimerPlugin +except ImportError: + timer_plugin = None +else: + timer_plugin = TimerPlugin() + timer_plugin.enabled = True + timer_plugin.timer_ok = 500 # Okay <= 500ms + timer_plugin.timer_warning = 5000 # Warn > 5s + timer_plugin.timer_no_color = False # Enable color output from testValidation import SlowTestsPlugin, StressTestsPlugin @@ -378,6 +388,8 @@ plugins=core.DefaultPluginManager()) conf.plugins.addPlugin(SlowTestsPlugin()) conf.plugins.addPlugin(StressTestsPlugin()) + if timer_plugin is not None: + conf.plugins.addPlugin(timer_plugin) runner = VdsmTestRunner(stream=conf.stream, verbosity=conf.verbosity, -- To view, visit http://gerrit.ovirt.org/30171 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I4960b30532a84abd259fb268c7e40a1751847a96 Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Antoni Segura Puimedon <asegurap(a)redhat.com>

6 13

Change in vdsm[master]: tests: Add a live merge functional test
by alitke＠redhat.com 02 Jul '16

02 Jul '16

Adam Litke has uploaded a new change for review. Change subject: tests: Add a live merge functional test ...................................................................... tests: Add a live merge functional test Test whether we can successfully merge the active layer. Uses lots of the functional test infrastructure! Only runs if vdsm says it can support live merge. Change-Id: Idd5a2f7eedaef9e90981256de66fc3ed21658e89 Signed-off-by: Adam Litke <alitke(a)redhat.com> --- M tests/functional/utils.py M tests/functional/virtTests.py 2 files changed, 185 insertions(+), 5 deletions(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/24/29824/1 diff --git a/tests/functional/utils.py b/tests/functional/utils.py index 494be98..e3cdba6 100644 --- a/tests/functional/utils.py +++ b/tests/functional/utils.py @@ -228,3 +228,41 @@ def updateVmPolicy(self, vmId, vcpuLimit): result = self.vdscli.updateVmPolicy([vmId, vcpuLimit]) return result['status']['code'], result['status']['message'] + + def getTaskStatus(self, taskId): + result = self.vdscli.getTaskStatus(taskId) + return result['status']['code'], result['status']['message'],\ + result['taskStatus'] + + def getVolumeInfo(self, sdId, spId, imgId, volId): + result = self.vdscli.getVolumeInfo(sdId, spId, imgId, volId) + return result['status']['code'], result['status']['message'],\ + result['info'] + + def createVolume(self, sdId, spId, imgId, size, volFormat, preallocate, + diskType, volId, desc, baseImgId, baseVolId): + result = self.vdscli.createVolume(sdId, spId, imgId, size, volFormat, + preallocate, diskType, volId, desc, + baseImgId, baseVolId) + return result['status']['code'], result['status']['message'],\ + result['uuid'] + + def deleteVolume(self, sdId, spId, imgId, volIds, postZero=False, + force=False): + result = self.vdscli.deleteVolume(sdId, spId, imgId, volIds, postZero, + force) + return result['status']['code'], result['status']['message'],\ + result['uuid'] + + def snapshot(self, vmId, snapDrives, snapMemVolHandle=''): + result = self.vdscli.snapshot(vmId, snapDrives, snapMemVolHandle) + return result['status']['code'], result['status']['message'] + + def merge(self, vmId, drive, base, top, bandwidth, jobId): + result = self.vdscli.merge(vmId, drive, base, top, bandwidth, jobId) + return result['status']['code'], result['status']['message'] + + def list(self, fullStatus=False, vmList=()): + result = self.vdscli.list(fullStatus, vmList) + return result['status']['code'], result['status']['message'], \ + result['vmList'] diff --git a/tests/functional/virtTests.py b/tests/functional/virtTests.py index 94ce240..b811b92 100644 --- a/tests/functional/virtTests.py +++ b/tests/functional/virtTests.py @@ -22,6 +22,7 @@ import math import tempfile import logging +import uuid from stat import S_IROTH from functools import partial, wraps @@ -32,7 +33,8 @@ from testrunner import temporaryPath from vdsm.utils import CommandPath, RollbackContext -import storageTests as storage +import storageTests +import storage from storage.misc import execCmd from utils import VdsProxy, SUCCESS @@ -109,6 +111,18 @@ return method(self, *args, **kwargs) else: raise SkipTest('KVM is not enabled') + return wrapped + + +def requireLiveMerge(method): + @wraps(method) + def wrapped(self, *args, **kwargs): + status, msg, result = self.vdsm.getVdsCapabilities() + self.assertEqual(status, SUCCESS, msg) + if result.get('liveMerge') == 'true': + return method(self, *args, **kwargs) + else: + raise SkipTest('Live Merge is not available') return wrapped @@ -227,9 +241,9 @@ @requireKVM @permutations([['localfs'], ['iscsi'], ['nfs']]) def testVmWithStorage(self, backendType): - disk = storage.StorageTest() + disk = storageTests.StorageTest() disk.setUp() - conf = storage.storageLayouts[backendType] + conf = storageTests.storageLayouts[backendType] drives = disk.generateDriveConf(conf) customization = {'vmId': '88888888-eeee-ffff-aaaa-111111111111', 'vmName': 'testVmWithStorage' + backendType, @@ -247,8 +261,8 @@ def testVmWithDevice(self, *devices): customization = {'vmId': '77777777-ffff-3333-bbbb-222222222222', 'vmName': 'testVm', 'devices': [], 'display': 'vnc'} - storageLayout = storage.storageLayouts['localfs'] - diskSpecs = storage.StorageTest.generateDriveConf(storageLayout) + storageLayout = storageTests.storageLayouts['localfs'] + diskSpecs = storageTests.StorageTest.generateDriveConf(storageLayout) pciSpecs = {'bus': '0x00', 'domain': '0x0000', 'function': '0x0', 'type': 'pci'} ccidSpecs = {'slot': '0', 'controller': '0', 'type': 'ccid'} @@ -412,3 +426,131 @@ self.vdsm.updateVmPolicy(customization['vmId'], '50') self.assertEqual(status, SUCCESS, msg) + + +@expandPermutations +class LiveMergeTest(VirtTestBase): + def _waitTask(self, taskId): + def assertTaskOK(): + status, msg, result = self.vdsm.getTaskStatus(taskId) + self.assertEqual(status, SUCCESS, msg) + self.assertEquals(result['taskState'], 'finished') + + self.retryAssert(assertTaskOK, timeout=60) + + def _waitBlockJobs(self, vmId, jobIds): + def assertJobsGone(): + status, msg, result = self.vdsm.getVmStats(vmId) + self.assertEqual(status, SUCCESS, msg) + self.assertTrue('vmJobs' in result) + self.assertTrue(all([x not in result['vmJobs'].keys() + for x in jobIds])) + + self.retryAssert(assertJobsGone, timeout=60) + + def _snapshotVM(self, vmId, drives, rollback): + snapDrives = [] + for drive in drives: + sd = drive['domainID'] + sp = drive['poolID'] + img = drive['imageID'] + vol = drive['volumeID'] + newVol = str(uuid.uuid4()) + volFormat = storage.volume.COW_FORMAT + preallocate = storage.volume.SPARSE_VOL + desc = 'snapshot for %s' % vol + + # Create volume and wait + status, msg, result = self.vdsm.getVolumeInfo(sd, sp, img, vol) + self.assertEqual(status, SUCCESS, msg) + size = result['capacity'] + diskType = result['disktype'] + + status, msg, taskId = self.vdsm.createVolume(sd, sp, img, size, + volFormat, + preallocate, diskType, + newVol, desc, img, + vol) + self.assertEqual(status, SUCCESS, msg) + self._waitTask(taskId) + undo = lambda sd=sd, sp=sp, img=img, vol=newVol: \ + self._waitTask(self.vdsm.deleteVolume(sd, sp, img, vol)[2]) + rollback.prependDefer(undo) + + snapDrives.append({'domainID': sd, + 'imageID': img, + 'volumeID': newVol, + 'baseVolumeID': vol}) + + # Create snapshot + status, msg = self.vdsm.snapshot(vmId, snapDrives) + self.assertEqual(status, SUCCESS, msg) + return snapDrives + + def _orderChain(self, vmId, dev, chain): + parentMap = {} + for vol in chain: + status, msg, info = self.vdsm.getVolumeInfo(dev['domainID'], + dev['poolID'], + dev['imageID'], vol) + self.assertEqual(status, SUCCESS, msg) + parent = info['parent'] + parentMap[vol] = parent + + vol = dev['volumeID'] + chain = list() + while True: + chain.insert(0, vol) + vol = parentMap.get(vol, '00000000-0000-0000-0000-000000000000') + if vol == '00000000-0000-0000-0000-000000000000': + break + return chain + + def _getVolumeChains(self, vmId): + chains = {} + status, msg, result = self.vdsm.list(True, (vmId,)) + self.assertEqual(status, SUCCESS, msg) + vmDef = result[0] + for dev in vmDef['devices']: + if dev['device'] != 'disk': + continue + chains[dev['imageID']] = self._orderChain(vmId, dev, + [x['volumeID'] for x in + dev['volumeChain']]) + return chains + + @requireKVM + @requireLiveMerge + def testCapable(self): + pass + + @permutations([['localfs']]) + def testMergeActiveLayer(self, backendType): + disk = storageTests.StorageTest() + disk.setUp() + conf = storageTests.storageLayouts[backendType] + drives = disk.generateDriveConf(conf) + vmId = '12121212-abab-baba-abab-222222222222' + customization = {'vmId': vmId, + 'vmName': 'testMergeActive' + backendType, + 'drives': drives, + 'display': 'vnc'} + + with RollbackContext() as rollback: + disk.createVdsmStorageLayout(conf, 3, rollback) + with RunningVm(self.vdsm, customization) as vm: + self._waitForStartup(vm, VM_MINIMAL_UPTIME) + snapDrives = self._snapshotVM(vmId, drives, rollback) + chains = {} + jobIds = [] + for drive in snapDrives: + base = drive['baseVolumeID'] + top = drive['volumeID'] + jobId = str(uuid.uuid4()) + chains[drive['imageID']] = [base, top] + status, msg = self.vdsm.merge(vmId, drive, base, top, 0, + jobId) + jobIds.append(jobId) + self._waitBlockJobs(vmId, jobIds) + actual = self._getVolumeChains(vmId) + self.assertEquals(chains, actual) -- To view, visit http://gerrit.ovirt.org/29824 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: Idd5a2f7eedaef9e90981256de66fc3ed21658e89 Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Adam Litke <alitke(a)redhat.com>

5 13

Change in vdsm[master]: lvm: Exclude faulty devices from lvm long filter
by Nir Soffer 15 Nov '15

15 Nov '15

Nir Soffer has uploaded a new change for review. Change subject: lvm: Exclude faulty devices from lvm long filter ...................................................................... lvm: Exclude faulty devices from lvm long filter lvm commands use filter to limit access to relevant devices. When the filter includes a faulty device, lvm commands may block for several minutes (stuck in D state). We have seen getDevicesList command stuck for up to 10 minutes because of faulty devices in the long filter. We used to build the filter from all multipath devices. Now we build the filter only from devices which have at least one active paths. # multipath -ll 360060160f4a0300038ed7058b5e9e311 dm-0 DGC ,VRAID size=15G features='0' hwhandler='1 emc' wp=rw |-+- policy='service-time 0' prio=0 status=enabled | `- 4:0:3:0 sdd 8:48 failed faulty running `-+- policy='service-time 0' prio=0 status=enabled `- 4:0:2:0 sdb 8:16 failed faulty running 360060160f4a030003268ab211002e411 dm-1 DGC ,VRAID size=30G features='1 queue_if_no_path' hwhandler='1 emc' wp=rw |-+- policy='service-time 0' prio=4 status=active | `- 4:0:3:1 sde 8:64 active ready running `-+- policy='service-time 0' prio=1 status=enabled `- 4:0:2:1 sdc 8:32 active ready running Previously, both devices were included in the filter, now only 360060160f4a030003268ab211002e411 will be included in lvm filter. A faulty device which became active again will be included in lvm filter after the next refresh (every 5 minutes), or after trying edit or create a new storage domain. lvm uses also short filter, including devices used by the certain vg or lv. It is possible that we also have to exclude such devices from the short filter. This will be handled later if needed. Change-Id: I6d7a973bcefa95813fdc289847760c0955aca30c Bug-Url: https://bugzilla.redhat.com/880738 Signed-off-by: Nir Soffer <nsoffer(a)redhat.com> --- M vdsm/storage/lvm.py M vdsm/storage/multipath.py 2 files changed, 13 insertions(+), 1 deletion(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/75/31875/1 diff --git a/vdsm/storage/lvm.py b/vdsm/storage/lvm.py index 86edf55..9cfad01 100644 --- a/vdsm/storage/lvm.py +++ b/vdsm/storage/lvm.py @@ -244,7 +244,7 @@ if not self._filterStale: return self._extraCfg - self._extraCfg = _buildConfig(multipath.getMPDevNamesIter()) + self._extraCfg = _buildConfig(multipath.getActiveMPDevNamesIter()) _updateLvmConf(self._extraCfg) self._filterStale = False diff --git a/vdsm/storage/multipath.py b/vdsm/storage/multipath.py index ba98866..2b30995 100644 --- a/vdsm/storage/multipath.py +++ b/vdsm/storage/multipath.py @@ -382,6 +382,18 @@ yield os.path.join(devicemapper.DMPATH_PREFIX, name) +def getActiveMPDevNamesIter(): + status = devicemapper.getPathsStatus() + for dmId, guid in getMPDevsIter(): + active = [slave for slave in devicemapper.getSlaves(dmId) + if status.get(slave) == "active"] + if not active: + log.warning("Skipping device %s - no active slave", guid) + continue + log.debug("Found device %s %s", guid, active) + yield os.path.join(devicemapper.DMPATH_PREFIX, guid) + + def getMPDevsIter(): """ Collect the list of all the multipath block devices. -- To view, visit http://gerrit.ovirt.org/31875 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I6d7a973bcefa95813fdc289847760c0955aca30c Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Nir Soffer <nsoffer(a)redhat.com>

5 18

Change in vdsm[master]: lvm: Decrease number of retries before failing
by Nir Soffer 14 Nov '15

14 Nov '15

Nir Soffer has uploaded a new change for review. Change subject: lvm: Decrease number of retries before failing ...................................................................... lvm: Decrease number of retries before failing Previously we configured lvm to stop accessing a device during an lvm opoeration after 3 errors. This can cause lvm to block 3 times when trying to access inaccessible device. With current iscsi settings, each block can be 120 seconds, total 360 seconds. We have seen lvm block for couple of minutes in such cases. The retries seems uneeded when working with multiple paths, as multipath already retry all available paths after SCSI errors on one path. However when working with single path, multipath should fail after one try. According to lvm developer this may decrease the time lvm is blocked when devices are not accesible. (Not tested yet) Change-Id: I5d11abaaff45ce86e88c6589264e162318ac1f1d Relates-To: https://bugzilla.redhat.com/880738 Signed-off-by: Nir Soffer <nsoffer(a)redhat.com> --- M vdsm/storage/lvm.py 1 file changed, 1 insertion(+), 1 deletion(-) git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/56/32356/1 diff --git a/vdsm/storage/lvm.py b/vdsm/storage/lvm.py index 86edf55..f760f7b 100644 --- a/vdsm/storage/lvm.py +++ b/vdsm/storage/lvm.py @@ -106,7 +106,7 @@ preferred_names = ["^/dev/mapper/"] ignore_suspended_devices=1 write_cache_state=0 -disable_after_error_count=3 +disable_after_error_count=1 obtain_device_list_from_udev=0 %s } -- To view, visit http://gerrit.ovirt.org/32356 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I5d11abaaff45ce86e88c6589264e162318ac1f1d Gerrit-PatchSet: 1 Gerrit-Project: vdsm Gerrit-Branch: master Gerrit-Owner: Nir Soffer <nsoffer(a)redhat.com>

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