January 2016 - Devel - libvirt List Archives

[libvirt] [PATCH v2] security_selinux: Fix crash in virSecuritySELinuxRestoreFileLabel
by Shanzhi Yu 03 Feb '16

03 Feb '16

virSecuritySELinuxRestoreFileLabel should never be called with NULL path add check before call this function in case of causeing libvirtd crash https://bugzilla.redhat.com/show_bug.cgi?id=1300532 Signed-off-by: Shanzhi Yu <shyu(a)redhat.com> --- src/security/security_selinux.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/src/security/security_selinux.c b/src/security/security_selinux.c index 9e98635..77e55a3 100644 --- a/src/security/security_selinux.c +++ b/src/security/security_selinux.c @@ -1098,7 +1098,8 @@ virSecuritySELinuxRestoreInputLabel(virSecurityManagerPtr mgr, switch ((virDomainInputType) input->type) { case VIR_DOMAIN_INPUT_TYPE_PASSTHROUGH: - rc = virSecuritySELinuxRestoreFileLabel(mgr, input->source.evdev); + if (input->source.evdev) + rc = virSecuritySELinuxRestoreFileLabel(mgr, input->source.evdev); break; case VIR_DOMAIN_INPUT_TYPE_MOUSE: @@ -1171,7 +1172,9 @@ virSecuritySELinuxRestoreTPMFileLabelInt(virSecurityManagerPtr mgr, switch (tpm->type) { case VIR_DOMAIN_TPM_TYPE_PASSTHROUGH: tpmdev = tpm->data.passthrough.source.data.file.path; - rc = virSecuritySELinuxRestoreFileLabel(mgr, tpmdev); + + if (tpmdev) + rc = virSecuritySELinuxRestoreFileLabel(mgr, tpmdev); if ((cancel_path = virTPMCreateCancelPath(tpmdev)) != NULL) { if (virSecuritySELinuxRestoreFileLabel(mgr, cancel_path) < 0) @@ -1722,7 +1725,9 @@ virSecuritySELinuxRestoreHostdevCapsLabel(virSecurityManagerPtr mgr, if (VIR_STRDUP(path, dev->source.caps.u.storage.block) < 0) return -1; } - ret = virSecuritySELinuxRestoreFileLabel(mgr, path); + if (path) + ret = virSecuritySELinuxRestoreFileLabel(mgr, path); + VIR_FREE(path); break; } @@ -1736,7 +1741,8 @@ virSecuritySELinuxRestoreHostdevCapsLabel(virSecurityManagerPtr mgr, if (VIR_STRDUP(path, dev->source.caps.u.misc.chardev) < 0) return -1; } - ret = virSecuritySELinuxRestoreFileLabel(mgr, path); + if (path) + ret = virSecuritySELinuxRestoreFileLabel(mgr, path); VIR_FREE(path); break; } @@ -1876,13 +1882,15 @@ virSecuritySELinuxRestoreChardevLabel(virSecurityManagerPtr mgr, switch (dev_source->type) { case VIR_DOMAIN_CHR_TYPE_DEV: case VIR_DOMAIN_CHR_TYPE_FILE: - if (virSecuritySELinuxRestoreFileLabel(mgr, dev_source->data.file.path) < 0) - goto done; + if (dev_source->data.file.path) { + if (virSecuritySELinuxRestoreFileLabel(mgr, dev_source->data.file.path) < 0) + goto done; + } ret = 0; break; case VIR_DOMAIN_CHR_TYPE_UNIX: - if (!dev_source->data.nix.listen) { + if (!dev_source->data.nix.listen && dev_source->data.file.path) { if (virSecuritySELinuxRestoreFileLabel(mgr, dev_source->data.file.path) < 0) goto done; } @@ -1898,7 +1906,8 @@ virSecuritySELinuxRestoreChardevLabel(virSecurityManagerPtr mgr, (virSecuritySELinuxRestoreFileLabel(mgr, in) < 0)) { goto done; } - } else if (virSecuritySELinuxRestoreFileLabel(mgr, dev_source->data.file.path) < 0) { + } else if (dev_source->data.file.path && + virSecuritySELinuxRestoreFileLabel(mgr, dev_source->data.file.path) < 0) { goto done; } ret = 0; -- 1.8.3.1

2 1

[libvirt] [PATCH] qemuDomainResume: allow to resume domain with guest panicked
by Dmitry Andreev 03 Feb '16

03 Feb '16

In case of guest panicked, preserved crashed domain has stopped CPUs. It's not possible to use tools like WinDbg for the problem investigation until we start CPUs back. --- src/qemu/qemu_driver.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index e46404b..0930280 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -1873,6 +1873,7 @@ static int qemuDomainResume(virDomainPtr dom) int ret = -1; virObjectEventPtr event = NULL; int state; + int reason; virQEMUDriverConfigPtr cfg = NULL; if (!(vm = qemuDomObjFromDomain(dom))) @@ -1892,12 +1893,14 @@ static int qemuDomainResume(virDomainPtr dom) goto endjob; } - state = virDomainObjGetState(vm, NULL); + state = virDomainObjGetState(vm, &reason); if (state == VIR_DOMAIN_PMSUSPENDED) { virReportError(VIR_ERR_OPERATION_INVALID, "%s", _("domain is pmsuspended")); goto endjob; - } else if (state == VIR_DOMAIN_PAUSED) { + } else if ((state == VIR_DOMAIN_CRASHED && + reason == VIR_DOMAIN_CRASHED_PANICKED) || + state == VIR_DOMAIN_PAUSED) { if (qemuProcessStartCPUs(driver, vm, dom->conn, VIR_DOMAIN_RUNNING_UNPAUSED, QEMU_ASYNC_JOB_NONE) < 0) { -- 1.8.3.1

2 2

[libvirt] [PATCH 1/2] Move qemuGetDHCPInterfaces to separate file
by Guido Günther 03 Feb '16

03 Feb '16

so we can use it from the LXC driver as well. --- I couldn't find a nice place to add this so I went for a separate file. I'm happy to move this elsewhere. Cheers, -- Guido po/POTFILES.in | 1 + src/Makefile.am | 1 + src/libvirt_private.syms | 4 ++ src/qemu/qemu_driver.c | 104 +---------------------------------- src/util/virdhcpinterfaces.c | 127 +++++++++++++++++++++++++++++++++++++++++++ src/util/virdhcpinterfaces.h | 34 ++++++++++++ 6 files changed, 169 insertions(+), 102 deletions(-) create mode 100644 src/util/virdhcpinterfaces.c create mode 100644 src/util/virdhcpinterfaces.h diff --git a/po/POTFILES.in b/po/POTFILES.in index 82e8d3e..64eaa9d 100644 --- a/po/POTFILES.in +++ b/po/POTFILES.in @@ -186,6 +186,7 @@ src/util/vircommand.c src/util/virconf.c src/util/vircrypto.c src/util/virdbus.c +src/util/virdhcpinterfaces.c src/util/virdnsmasq.c src/util/virerror.c src/util/virerror.h diff --git a/src/Makefile.am b/src/Makefile.am index a4aef0f..bddfd21 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -104,6 +104,7 @@ UTIL_SOURCES = \ util/virconf.c util/virconf.h \ util/vircrypto.c util/vircrypto.h \ util/virdbus.c util/virdbus.h util/virdbuspriv.h \ + util/virdhcpinterfaces.c util/virdhcpinterfaces.h \ util/virdnsmasq.c util/virdnsmasq.h \ util/virebtables.c util/virebtables.h \ util/virendian.h \ diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 3d0ec9d..ea3e83c 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -1377,6 +1377,10 @@ virDBusMessageRead; virDBusSetSharedBus; +# util/virdhcpinterfaces.h +virGetDHCPInterfaces; + + # util/virdnsmasq.h dnsmasqAddDhcpHost; dnsmasqAddHost; diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index abcdbe6..fe1cb6d 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -101,6 +101,7 @@ #include "virnuma.h" #include "dirname.h" #include "network/bridge_driver.h" +#include "virdhcpinterfaces.h" #define VIR_FROM_THIS VIR_FROM_QEMU @@ -173,10 +174,6 @@ static int qemuOpenFileAs(uid_t fallback_uid, gid_t fallback_gid, const char *path, int oflags, bool *needUnlink, bool *bypassSecurityDriver); -static int qemuGetDHCPInterfaces(virDomainPtr dom, - virDomainObjPtr vm, - virDomainInterfacePtr **ifaces); - virQEMUDriverPtr qemu_driver = NULL; @@ -19794,7 +19791,7 @@ qemuDomainInterfaceAddresses(virDomainPtr dom, switch (source) { case VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_LEASE: - ret = qemuGetDHCPInterfaces(dom, vm, ifaces); + ret = virGetDHCPInterfaces(dom, vm, ifaces); break; case VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_AGENT: @@ -19825,103 +19822,6 @@ qemuDomainInterfaceAddresses(virDomainPtr dom, return ret; } -static int -qemuGetDHCPInterfaces(virDomainPtr dom, - virDomainObjPtr vm, - virDomainInterfacePtr **ifaces) -{ - int rv = -1; - int n_leases = 0; - size_t i, j; - size_t ifaces_count = 0; - virNetworkPtr network = NULL; - char macaddr[VIR_MAC_STRING_BUFLEN]; - virDomainInterfacePtr iface = NULL; - virNetworkDHCPLeasePtr *leases = NULL; - virDomainInterfacePtr *ifaces_ret = NULL; - - if (!dom->conn->networkDriver || - !dom->conn->networkDriver->networkGetDHCPLeases) { - virReportError(VIR_ERR_INTERNAL_ERROR, "%s", - _("Network driver does not support DHCP lease query")); - return -1; - } - - for (i = 0; i < vm->def->nnets; i++) { - if (vm->def->nets[i]->type != VIR_DOMAIN_NET_TYPE_NETWORK) - continue; - - virMacAddrFormat(&(vm->def->nets[i]->mac), macaddr); - virObjectUnref(network); - network = virNetworkLookupByName(dom->conn, - vm->def->nets[i]->data.network.name); - - if ((n_leases = virNetworkGetDHCPLeases(network, macaddr, - &leases, 0)) < 0) - goto error; - - if (n_leases) { - if (VIR_EXPAND_N(ifaces_ret, ifaces_count, 1) < 0) - goto error; - - if (VIR_ALLOC(ifaces_ret[ifaces_count - 1]) < 0) - goto error; - - iface = ifaces_ret[ifaces_count - 1]; - /* Assuming each lease corresponds to a separate IP */ - iface->naddrs = n_leases; - - if (VIR_ALLOC_N(iface->addrs, iface->naddrs) < 0) - goto error; - - if (VIR_STRDUP(iface->name, vm->def->nets[i]->ifname) < 0) - goto cleanup; - - if (VIR_STRDUP(iface->hwaddr, macaddr) < 0) - goto cleanup; - } - - for (j = 0; j < n_leases; j++) { - virNetworkDHCPLeasePtr lease = leases[j]; - virDomainIPAddressPtr ip_addr = &iface->addrs[j]; - - if (VIR_STRDUP(ip_addr->addr, lease->ipaddr) < 0) - goto cleanup; - - ip_addr->type = lease->type; - ip_addr->prefix = lease->prefix; - } - - for (j = 0; j < n_leases; j++) - virNetworkDHCPLeaseFree(leases[j]); - - VIR_FREE(leases); - } - - *ifaces = ifaces_ret; - ifaces_ret = NULL; - rv = ifaces_count; - - cleanup: - virObjectUnref(network); - if (leases) { - for (i = 0; i < n_leases; i++) - virNetworkDHCPLeaseFree(leases[i]); - } - VIR_FREE(leases); - - return rv; - - error: - if (ifaces_ret) { - for (i = 0; i < ifaces_count; i++) - virDomainInterfaceFree(ifaces_ret[i]); - } - VIR_FREE(ifaces_ret); - - goto cleanup; -} - static int qemuDomainSetUserPassword(virDomainPtr dom, diff --git a/src/util/virdhcpinterfaces.c b/src/util/virdhcpinterfaces.c new file mode 100644 index 0000000..80135f7 --- /dev/null +++ b/src/util/virdhcpinterfaces.c @@ -0,0 +1,127 @@ +/* + * virdhcpinterfaces.c: get a domains dhcp managed interfaces + * + * Copyright (C) 2016 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * <http://www.gnu.org/licenses/>. + * + * Author: Daniel P. Berrange <berrange(a)redhat.com> + */ + +#include <config.h> + +#include "virdhcpinterfaces.h" +#include "viralloc.h" +#include "virstring.h" +#include "datatypes.h" + +#define VIR_FROM_THIS VIR_FROM_AUDIT + +int +virGetDHCPInterfaces(virDomainPtr dom, + virDomainObjPtr vm, + virDomainInterfacePtr **ifaces) +{ + int rv = -1; + int n_leases = 0; + size_t i, j; + size_t ifaces_count = 0; + virNetworkPtr network = NULL; + char macaddr[VIR_MAC_STRING_BUFLEN]; + virDomainInterfacePtr iface = NULL; + virNetworkDHCPLeasePtr *leases = NULL; + virDomainInterfacePtr *ifaces_ret = NULL; + + if (!dom->conn->networkDriver || + !dom->conn->networkDriver->networkGetDHCPLeases) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Network driver does not support DHCP lease query")); + return -1; + } + + for (i = 0; i < vm->def->nnets; i++) { + if (vm->def->nets[i]->type != VIR_DOMAIN_NET_TYPE_NETWORK) + continue; + + virMacAddrFormat(&(vm->def->nets[i]->mac), macaddr); + virObjectUnref(network); + network = virNetworkLookupByName(dom->conn, + vm->def->nets[i]->data.network.name); + + if ((n_leases = virNetworkGetDHCPLeases(network, macaddr, + &leases, 0)) < 0) + goto error; + + if (n_leases) { + if (VIR_EXPAND_N(ifaces_ret, ifaces_count, 1) < 0) + goto error; + + if (VIR_ALLOC(ifaces_ret[ifaces_count - 1]) < 0) + goto error; + + iface = ifaces_ret[ifaces_count - 1]; + /* Assuming each lease corresponds to a separate IP */ + iface->naddrs = n_leases; + + if (VIR_ALLOC_N(iface->addrs, iface->naddrs) < 0) + goto error; + + if (VIR_STRDUP(iface->name, vm->def->nets[i]->ifname) < 0) + goto cleanup; + + if (VIR_STRDUP(iface->hwaddr, macaddr) < 0) + goto cleanup; + } + + for (j = 0; j < n_leases; j++) { + virNetworkDHCPLeasePtr lease = leases[j]; + virDomainIPAddressPtr ip_addr = &iface->addrs[j]; + + if (VIR_STRDUP(ip_addr->addr, lease->ipaddr) < 0) + goto cleanup; + + ip_addr->type = lease->type; + ip_addr->prefix = lease->prefix; + } + + for (j = 0; j < n_leases; j++) + virNetworkDHCPLeaseFree(leases[j]); + + VIR_FREE(leases); + } + + *ifaces = ifaces_ret; + ifaces_ret = NULL; + rv = ifaces_count; + + cleanup: + virObjectUnref(network); + if (leases) { + for (i = 0; i < n_leases; i++) + virNetworkDHCPLeaseFree(leases[i]); + } + VIR_FREE(leases); + + return rv; + + error: + if (ifaces_ret) { + for (i = 0; i < ifaces_count; i++) + virDomainInterfaceFree(ifaces_ret[i]); + } + VIR_FREE(ifaces_ret); + + goto cleanup; +} diff --git a/src/util/virdhcpinterfaces.h b/src/util/virdhcpinterfaces.h new file mode 100644 index 0000000..c7acb8f --- /dev/null +++ b/src/util/virdhcpinterfaces.h @@ -0,0 +1,34 @@ +/* + * virdhcpinterfaces.h: get a domains dhcp managed interfaces + * + * Copyright (C) 2016 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * <http://www.gnu.org/licenses/>. + * + * Author: Daniel P. Berrange <berrange(a)redhat.com> + */ + +#ifndef __VIR_DHCP_INTERFACES_H__ +# define __VIR_DHCP_INTERFACES_H__ + +# include "internal.h" +# include "virdomainobjlist.h" + +int +virGetDHCPInterfaces(virDomainPtr dom, + virDomainObjPtr vm, + virDomainInterfacePtr **ifaces); + +#endif /* __VIR_DHCP_INTERFACES_H__ */ -- 2.7.0.rc3

2 3

[libvirt] [PATCH v2 00/21] vcpu info storage refactors - part 2
by Peter Krempa 03 Feb '16

03 Feb '16

Some of patches were pushed. The rest fixes most of the feedback that made sense that was against v1. Peter Krempa (21): cgroup: Clean up virCgroupGetPercpuStats conf: Add helper to retrieve bitmap of active vcpus for a definition cgroup: Prepare for sparse vCPU topologies in virCgroupGetPercpuStats qemu: cpu hotplug: Set vcpu state directly in the new structure qemu: Move and rename qemuProcessDetectVcpuPIDs to qemuDomainDetectVcpuPids qemu: domain: Prepare qemuDomainDetectVcpuPids for reuse qemu: Reuse qemuDomainDetectVcpuPids in cpu hot(un)plug conf: Don't copy def->cpumask into cpu pinning info conf: Split out logic to determine whether cpupin was provided conf: Store cpu pinning data in def->vcpus conf: remove unused cpu pinning helpers and data structures conf: Extract code that formats <cputune> util: bitmap: Introduce bitmap subtraction conf: Add helper to return a bitmap of active iothread ids conf: Extract code for parsing thread resource scheduler info conf: Don't store vcpusched orthogonally to other vcpu info conf: Fix how iothread scheduler info is stored qemu: vcpu: Aggregate code to set vCPU tuning qemu: vcpu: Reuse qemuProcessSetupVcpu in vcpu hotplug qemu: iothread: Aggregate code to set IOTrhead tuning qemu: iothread: Reuse qemuProcessSetupIOThread in iothread hotplug src/conf/domain_conf.c | 940 +++++++++++---------- src/conf/domain_conf.h | 45 +- src/libvirt_private.syms | 10 +- src/libxl/libxl_domain.c | 20 +- src/libxl/libxl_driver.c | 41 +- src/lxc/lxc_driver.c | 2 +- src/qemu/qemu_cgroup.c | 195 ----- src/qemu/qemu_cgroup.h | 2 - src/qemu/qemu_domain.c | 84 ++ src/qemu/qemu_domain.h | 2 + src/qemu/qemu_driver.c | 405 +++------ src/qemu/qemu_process.c | 478 ++++++----- src/qemu/qemu_process.h | 6 + src/test/test_driver.c | 45 +- src/util/virbitmap.c | 21 + src/util/virbitmap.h | 3 + src/util/vircgroup.c | 74 +- src/util/vircgroup.h | 3 +- src/vz/vz_sdk.c | 4 +- .../qemuxml2xmlout-cputune-iothreadsched.xml | 3 +- tests/virbitmaptest.c | 55 ++ tests/vircgrouptest.c | 2 +- 22 files changed, 1148 insertions(+), 1292 deletions(-) -- 2.6.2

2 43

[libvirt] [PATCH v4] qemu: Connect to guest agent iff needed
by Michal Privoznik 03 Feb '16

03 Feb '16

https://bugzilla.redhat.com/show_bug.cgi?id=1293351 Since we already have virtio channel events, we know when guest agent within guest has (dis-)connected. Instead of us blindly connecting to a socket that no one is listening to, we can just follow what qemu-ga does. This has a nice benefit that we don't need to 'guest-ping' the agent just to timeout and find out nobody is listening. The way that this commit is implemented: - don't connect in qemuProcessStart directly, defer that to event callback (which already follows the agent). - after migration is settled, before we resume vCPUs, ask qemu whether somebody is listening on the socket and if so, connect to it. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- diff to v3: -Move cap detection into qemuConnectAgent src/qemu/qemu_driver.c | 13 ++++++++++++- src/qemu/qemu_migration.c | 12 ++++++++++++ src/qemu/qemu_process.c | 24 ++++++++++++++++++++++++ 3 files changed, 48 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 8ccf68b..3751ba6 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -6650,12 +6650,13 @@ qemuDomainSaveImageStartVM(virConnectPtr conn, bool start_paused, qemuDomainAsyncJob asyncJob) { - int ret = -1; + int rc, ret = -1; virObjectEventPtr event; int intermediatefd = -1; virCommandPtr cmd = NULL; char *errbuf = NULL; virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); + qemuDomainObjPrivatePtr priv = vm->privateData; if ((header->version == 2) && (header->compressed != QEMU_SAVE_FORMAT_RAW)) { @@ -6710,6 +6711,16 @@ qemuDomainSaveImageStartVM(virConnectPtr conn, goto cleanup; } + if ((rc = qemuConnectAgent(driver, vm)) < 0) { + if (rc == -2) + goto cleanup; + + VIR_WARN("Cannot connect to QEMU guest agent for %s", + vm->def->name); + virResetLastError(); + priv->agentError = true; + } + event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STARTED, VIR_DOMAIN_EVENT_STARTED_RESTORED); diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index 51e7125..9678adf 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -5795,6 +5795,7 @@ qemuMigrationFinish(virQEMUDriverPtr driver, unsigned short port; unsigned long long timeReceived = 0; virObjectEventPtr event; + int rc; VIR_DEBUG("driver=%p, dconn=%p, vm=%p, cookiein=%s, cookieinlen=%d, " "cookieout=%p, cookieoutlen=%p, flags=%lx, retcode=%d", @@ -5863,6 +5864,17 @@ qemuMigrationFinish(virQEMUDriverPtr driver, if (qemuMigrationStopNBDServer(driver, vm, mig) < 0) goto endjob; + if ((rc = qemuConnectAgent(driver, vm)) < 0) { + if (rc == -2) + goto endjob; + + VIR_WARN("Cannot connect to QEMU guest agent for %s", + vm->def->name); + virResetLastError(); + priv->agentError = true; + } + + if (flags & VIR_MIGRATE_PERSIST_DEST) { if (qemuMigrationPersist(driver, vm, mig, !v3proto) < 0) { /* Hmpf. Migration was successful, but making it persistent diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 05cbda2..e1a25dd 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -77,6 +77,10 @@ VIR_LOG_INIT("qemu.qemu_process"); +static int +qemuProcessReconnectRefreshChannelVirtioState(virQEMUDriverPtr driver, + virDomainObjPtr vm); + /** * qemuProcessRemoveDomainStatus * @@ -208,6 +212,26 @@ qemuConnectAgent(virQEMUDriverPtr driver, virDomainObjPtr vm) if (!config) return 0; + if (priv->agent) + return 0; + + if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_VSERPORT_CHANGE) && + config->state != VIR_DOMAIN_CHR_DEVICE_STATE_CONNECTED) { + /* So qemu is capable of sending us event whenever guest agent + * (dis-)connects. And we reflect its state in config->state. Well, + * nearly. It may happen that what we think about the guest agent state + * is not accurate, e.g. right after migration. Ask qemu to be sure. */ + + if (qemuProcessReconnectRefreshChannelVirtioState(driver, vm) < 0) + goto cleanup; + + /* Now we are sure about the channel state. */ + if (config->state != VIR_DOMAIN_CHR_DEVICE_STATE_CONNECTED) { + VIR_DEBUG("Deferring connecting to guest agent"); + return 0; + } + } + if (virSecurityManagerSetDaemonSocketLabel(driver->securityManager, vm->def) < 0) { VIR_ERROR(_("Failed to set security context for agent for %s"), -- 2.4.10

2 3

[libvirt] oVirt considers using macTableManager='libvirt'
by Ido Barkan 02 Feb '16

02 Feb '16

Hi guys, We, at oVirt, are considring using the automatic bridge management feature of libvirt for our hosts (macTableManager='libvirt'). I could find any discussion in the mailing list archives about the motivation for this feature. (was there?). If there wasn't I would like to start a new one, about the possible trade offs it would have in oVirt. Specifically I have a few questions: 1) The obvious performance motivation is clear: considering N hosts with M vms each connected to the same LAN, the first packet to any unknown yet host will flood all the vms in all N bridges. -- was there any other motivation that I do not understand (apart from slightly better security? 2) oVirt uses TC for port mirroring, in case this is requested by users, to mirror traffic from a chosen bridge to a chosen NIC in the host. I could not understand if macTableManager will interfere with it, or not. 3) Are there any drawbacks to enabling this feature? 4) We aim for rhel7.2. Will the feature be supported (or partially supported) for kernels older then 3.17? And if so, in what way? 5) oVirt currently builds its own bridges and tell libvirt about them. Does that have any affect on the functionality of that feature? 6) are there any plans to support OVS for this feature in the future? -- Thanks, Ido Barkan

4 7

[libvirt] [PATCH v2 0/6] Some logical pool/volume changes
by John Ferlan 02 Feb '16

02 Feb '16

v1: http://www.redhat.com/archives/libvir-list/2016-January/msg01023.html Differences to v1: Patch 1 is the former patch 2 with the following adjuments: - Change helper name to be virStorageBackendLogicalParseVolExtents - Include all 'extent' parsing needs - including fetch/parse of 'stripes' to determine 'nextents' value, allocation of vol->source.extents, parse of groups[6] to be 'length', parse of groups[7] to be 'size' Patch 2 is new, but replaces some of the concepts from patch 3: - I rototilled the virStorageBackendLogicalParseVolExtents to remove the unnecessary trip through regex/regcomp. - Used virStringSplitCount instread and then parse the resultant string. - Removed the need for the 'stripes' fetch since it really wasn't doing what it was supposed to. - I adjusted the virstringtest to exhibit what is being parsed (it can be removed if you think that's excessive). Patches 3-5 are new - These could be combined. I left them separate to show the process... - Essentially adding a new "source" field to be used to display in the vol-dumpxml output Patch 6 is part of the old patch 4: - Since the old patch 3 isn't necessary - it's essentially gone. This just takes the patch 4 concept of changing the regex, but also applies it to the current code. John Ferlan (6): logical: Create helper virStorageBackendLogicalParseVolExtents logical: Fix parsing of the 'devices' field lvs output logical: Search for a segtype of "thin" and mark lv as sparse vol: Add thin_pool to _virStorageVolSource logical: Add capability to get the thin pool name logical: Display thin lv's found in a libvirt managed volume group docs/formatstorage.html.in | 9 +- src/conf/storage_conf.c | 5 + src/conf/storage_conf.h | 1 + src/storage/storage_backend_logical.c | 221 ++++++++++++++++------------------ tests/virstringtest.c | 11 ++ 5 files changed, 127 insertions(+), 120 deletions(-) -- 2.5.0

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[libvirt] [PATCH v3 0/4] virshBlockJobWait improvements
by Michael Chapman 01 Feb '16

01 Feb '16

v2 discussion at: http://www.redhat.com/archives/libvir-list/2016-January/msg01063.html As requested I've split this into separate commits. All of the comment nitpicks have been applied. With regards to using "break" or "goto cleanup" to exit the loop, I decided to use "goto" on all the error cases and "break" everywhere else. I had noticed another bug where the SIGINT signal action wasn't reset if the virTimeMillisNow() call failed; that's fixed in patch 3 in this series. Michael Chapman (4): virsh: avoid unnecessary progress updates virsh: be consistent with style of loop exit virsh: ensure SIGINT action is reset on all errors virsh: improve waiting for block job readiness tools/virsh-domain.c | 65 ++++++++++++++++++++++++++++++---------------------- 1 file changed, 37 insertions(+), 28 deletions(-) -- 2.4.3

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[libvirt] [PATCH] qemu: Mark some functions as static
by Cole Robinson 01 Feb '16

01 Feb '16

--- src/qemu/qemu_command.c | 16 +++++++++++++--- src/qemu/qemu_command.h | 11 ----------- src/qemu/qemu_process.h | 2 -- 3 files changed, 13 insertions(+), 16 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 5d3ab3a..8943270 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -1775,6 +1775,16 @@ qemuDomainPCIBusFullyReserved(virDomainPCIAddressBusPtr bus) } +static int +qemuAssignDevicePCISlots(virDomainDefPtr def, + virQEMUCapsPtr qemuCaps, + virDomainPCIAddressSetPtr addrs); +static int +qemuDomainAssignPCIAddresses(virDomainDefPtr def, + virQEMUCapsPtr qemuCaps, + virDomainObjPtr obj); + + int qemuDomainAssignAddresses(virDomainDefPtr def, virQEMUCapsPtr qemuCaps, virDomainObjPtr obj) @@ -1801,7 +1811,7 @@ int qemuDomainAssignAddresses(virDomainDefPtr def, } -virDomainPCIAddressSetPtr +static virDomainPCIAddressSetPtr qemuDomainPCIAddressSetCreate(virDomainDefPtr def, unsigned int nbuses, bool dryRun) @@ -2238,7 +2248,7 @@ qemuValidateDevicePCISlotsChipsets(virDomainDefPtr def, return 0; } -int +static int qemuDomainAssignPCIAddresses(virDomainDefPtr def, virQEMUCapsPtr qemuCaps, virDomainObjPtr obj) @@ -2451,7 +2461,7 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def, * function must only try to reserve addresses if info.type == NONE and * skip over info.type == PCI */ -int +static int qemuAssignDevicePCISlots(virDomainDefPtr def, virQEMUCapsPtr qemuCaps, virDomainPCIAddressSetPtr addrs) diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h index a96e57d..53bfda5 100644 --- a/src/qemu/qemu_command.h +++ b/src/qemu/qemu_command.h @@ -274,17 +274,6 @@ void qemuDomainReleaseDeviceAddress(virDomainObjPtr vm, const char *devstr); -int qemuDomainAssignPCIAddresses(virDomainDefPtr def, - virQEMUCapsPtr qemuCaps, - virDomainObjPtr obj); -virDomainPCIAddressSetPtr qemuDomainPCIAddressSetCreate(virDomainDefPtr def, - unsigned int nbuses, - bool dryRun); - -int qemuAssignDevicePCISlots(virDomainDefPtr def, - virQEMUCapsPtr qemuCaps, - virDomainPCIAddressSetPtr addrs); - int qemuAssignDeviceAliases(virDomainDefPtr def, virQEMUCapsPtr qemuCaps); int qemuDomainNetVLAN(virDomainNetDefPtr def); int qemuAssignDeviceNetAlias(virDomainDefPtr def, virDomainNetDefPtr net, int idx); diff --git a/src/qemu/qemu_process.h b/src/qemu/qemu_process.h index c674111..cb5cee1 100644 --- a/src/qemu/qemu_process.h +++ b/src/qemu/qemu_process.h @@ -42,8 +42,6 @@ int qemuProcessStopCPUs(virQEMUDriverPtr driver, void qemuProcessAutostartAll(virQEMUDriverPtr driver); void qemuProcessReconnectAll(virConnectPtr conn, virQEMUDriverPtr driver); -int qemuProcessAssignPCIAddresses(virDomainDefPtr def); - typedef struct _qemuProcessIncomingDef qemuProcessIncomingDef; typedef qemuProcessIncomingDef *qemuProcessIncomingDefPtr; struct _qemuProcessIncomingDef { -- 2.5.0

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[libvirt] [PATCH] qemu: Align dump options for watchdog and on_crash events
by Boris Fiuczynski 01 Feb '16

01 Feb '16

Having on_crash set to either coredump-destroy or coredump-restart creates core dumps with option memory-only in the directory specified by auto_dump_path. When a watchdog is triggered with the action dump the core dump is also placed into the directory specified by auto_dump_path but is created without the option memory-only. This patch sets the option memory-only also for core dumps created by the watchdog event. Signed-off-by: Boris Fiuczynski <fiuczy(a)linux.vnet.ibm.com> Reviewed-by: Bjoern Walk <bwalk(a)linux.vnet.ibm.com> Reviewed-by: Stefan Zimmermann <stzi(a)linux.vnet.ibm.com> --- src/qemu/qemu_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index f429832..88ecf48 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -3894,7 +3894,7 @@ static void processWatchdogEvent(virQEMUDriverPtr driver, virDomainObjPtr vm, in case VIR_DOMAIN_WATCHDOG_ACTION_DUMP: { char *dumpfile; - unsigned int flags = 0; + unsigned int flags = VIR_DUMP_MEMORY_ONLY; if (virAsprintf(&dumpfile, "%s/%s-%u", cfg->autoDumpPath, -- 2.3.0

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