2009-10-09 18:07:55 +00:00
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/*
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* qemu_monitor.h: interaction with QEMU monitor console
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*
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2013-01-31 00:18:44 +00:00
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* Copyright (C) 2006-2013 Red Hat, Inc.
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2009-10-09 18:07:55 +00:00
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* Copyright (C) 2006 Daniel P. Berrange
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2012-09-20 22:30:55 +00:00
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* License along with this library. If not, see
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2012-07-21 10:06:23 +00:00
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* <http://www.gnu.org/licenses/>.
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2009-10-09 18:07:55 +00:00
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*
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* Author: Daniel P. Berrange <berrange@redhat.com>
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*/
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#ifndef QEMU_MONITOR_H
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2010-03-09 18:22:22 +00:00
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# define QEMU_MONITOR_H
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2009-10-09 18:07:55 +00:00
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2010-03-09 18:22:22 +00:00
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# include "internal.h"
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2009-10-09 18:07:55 +00:00
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2010-03-09 18:22:22 +00:00
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# include "domain_conf.h"
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2012-12-04 11:56:32 +00:00
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# include "virbitmap.h"
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2012-01-25 16:13:59 +00:00
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# include "virhash.h"
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2012-12-12 17:53:50 +00:00
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# include "virjson.h"
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2012-08-16 15:41:06 +00:00
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# include "device_conf.h"
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2013-07-22 11:07:23 +00:00
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# include "cpu/cpu.h"
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2009-10-09 18:07:55 +00:00
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2009-10-09 19:13:29 +00:00
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typedef struct _qemuMonitor qemuMonitor;
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typedef qemuMonitor *qemuMonitorPtr;
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2009-10-09 18:07:55 +00:00
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Fully asynchronous monitor I/O processing
Change the QEMU monitor file handle watch to poll for both
read & write events, as well as EOF. All I/O to/from the
QEMU monitor FD is now done in the event callback thread.
When the QEMU driver needs to send a command, it puts the
data to be sent into a qemuMonitorMessagePtr object instance,
queues it for dispatch, and then goes to sleep on a condition
variable. The event thread sends all the data, and then waits
for the reply to arrive, putting the response / error data
back into the qemuMonitorMessagePtr and notifying the condition
variable.
There is a temporary hack in the disk passphrase callback to
avoid acquiring the domain lock. This avoids a deadlock in
the command processing, since the domain lock is still held
when running monitor commands. The next commit will remove
the locking when running commands & thus allow re-introduction
of locking the disk passphrase callback
* src/qemu/qemu_driver.c: Temporarily don't acquire lock in
disk passphrase callback. To be reverted in next commit
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h: Remove
raw I/O functions, and a generic qemuMonitorSend() for
invoking a command
* src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h:
Remove all low level I/O, and use the new qemuMonitorSend()
API. Provide a qemuMonitorTextIOProcess() method for detecting
command/reply/prompt boundaries in the monitor data stream
2009-10-14 17:40:51 +00:00
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typedef struct _qemuMonitorMessage qemuMonitorMessage;
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typedef qemuMonitorMessage *qemuMonitorMessagePtr;
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typedef int (*qemuMonitorPasswordHandler)(qemuMonitorPtr mon,
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qemuMonitorMessagePtr msg,
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const char *data,
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size_t len,
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void *opaque);
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struct _qemuMonitorMessage {
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int txFD;
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char *txBuffer;
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int txOffset;
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int txLength;
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2011-05-29 12:51:08 +00:00
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/* Used by the text monitor reply / error */
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Fully asynchronous monitor I/O processing
Change the QEMU monitor file handle watch to poll for both
read & write events, as well as EOF. All I/O to/from the
QEMU monitor FD is now done in the event callback thread.
When the QEMU driver needs to send a command, it puts the
data to be sent into a qemuMonitorMessagePtr object instance,
queues it for dispatch, and then goes to sleep on a condition
variable. The event thread sends all the data, and then waits
for the reply to arrive, putting the response / error data
back into the qemuMonitorMessagePtr and notifying the condition
variable.
There is a temporary hack in the disk passphrase callback to
avoid acquiring the domain lock. This avoids a deadlock in
the command processing, since the domain lock is still held
when running monitor commands. The next commit will remove
the locking when running commands & thus allow re-introduction
of locking the disk passphrase callback
* src/qemu/qemu_driver.c: Temporarily don't acquire lock in
disk passphrase callback. To be reverted in next commit
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h: Remove
raw I/O functions, and a generic qemuMonitorSend() for
invoking a command
* src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h:
Remove all low level I/O, and use the new qemuMonitorSend()
API. Provide a qemuMonitorTextIOProcess() method for detecting
command/reply/prompt boundaries in the monitor data stream
2009-10-14 17:40:51 +00:00
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char *rxBuffer;
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int rxLength;
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2011-05-29 12:51:08 +00:00
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/* Used by the JSON monitor to hold reply / error */
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void *rxObject;
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Fully asynchronous monitor I/O processing
Change the QEMU monitor file handle watch to poll for both
read & write events, as well as EOF. All I/O to/from the
QEMU monitor FD is now done in the event callback thread.
When the QEMU driver needs to send a command, it puts the
data to be sent into a qemuMonitorMessagePtr object instance,
queues it for dispatch, and then goes to sleep on a condition
variable. The event thread sends all the data, and then waits
for the reply to arrive, putting the response / error data
back into the qemuMonitorMessagePtr and notifying the condition
variable.
There is a temporary hack in the disk passphrase callback to
avoid acquiring the domain lock. This avoids a deadlock in
the command processing, since the domain lock is still held
when running monitor commands. The next commit will remove
the locking when running commands & thus allow re-introduction
of locking the disk passphrase callback
* src/qemu/qemu_driver.c: Temporarily don't acquire lock in
disk passphrase callback. To be reverted in next commit
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h: Remove
raw I/O functions, and a generic qemuMonitorSend() for
invoking a command
* src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h:
Remove all low level I/O, and use the new qemuMonitorSend()
API. Provide a qemuMonitorTextIOProcess() method for detecting
command/reply/prompt boundaries in the monitor data stream
2009-10-14 17:40:51 +00:00
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2011-05-29 12:51:08 +00:00
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/* True if rxBuffer / rxObject are ready, or a
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* fatal error occurred on the monitor channel
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*/
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bool finished;
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Fully asynchronous monitor I/O processing
Change the QEMU monitor file handle watch to poll for both
read & write events, as well as EOF. All I/O to/from the
QEMU monitor FD is now done in the event callback thread.
When the QEMU driver needs to send a command, it puts the
data to be sent into a qemuMonitorMessagePtr object instance,
queues it for dispatch, and then goes to sleep on a condition
variable. The event thread sends all the data, and then waits
for the reply to arrive, putting the response / error data
back into the qemuMonitorMessagePtr and notifying the condition
variable.
There is a temporary hack in the disk passphrase callback to
avoid acquiring the domain lock. This avoids a deadlock in
the command processing, since the domain lock is still held
when running monitor commands. The next commit will remove
the locking when running commands & thus allow re-introduction
of locking the disk passphrase callback
* src/qemu/qemu_driver.c: Temporarily don't acquire lock in
disk passphrase callback. To be reverted in next commit
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h: Remove
raw I/O functions, and a generic qemuMonitorSend() for
invoking a command
* src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h:
Remove all low level I/O, and use the new qemuMonitorSend()
API. Provide a qemuMonitorTextIOProcess() method for detecting
command/reply/prompt boundaries in the monitor data stream
2009-10-14 17:40:51 +00:00
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qemuMonitorPasswordHandler passwordHandler;
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void *passwordOpaque;
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};
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2013-07-25 15:27:52 +00:00
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typedef void (*qemuMonitorDestroyCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef void (*qemuMonitorEofNotifyCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef void (*qemuMonitorErrorNotifyCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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/* XXX we'd really like to avoid virConnectPtr here
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* It is required so the callback can find the active
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* secret driver. Need to change this to work like the
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* security drivers do, to avoid this
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*/
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typedef int (*qemuMonitorDiskSecretLookupCallback)(qemuMonitorPtr mon,
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virConnectPtr conn,
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virDomainObjPtr vm,
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const char *path,
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char **secret,
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2013-07-25 17:26:15 +00:00
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size_t *secretLen,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainShutdownCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainResetCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainPowerdownCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainStopCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainResumeCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainRTCChangeCallback)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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2013-07-25 17:26:15 +00:00
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long long offset,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainWatchdogCallback)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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2013-07-25 17:26:15 +00:00
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int action,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainIOErrorCallback)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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const char *diskAlias,
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int action,
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2013-07-25 17:26:15 +00:00
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const char *reason,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainGraphicsCallback)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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int phase,
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int localFamily,
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const char *localNode,
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const char *localService,
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int remoteFamily,
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const char *remoteNode,
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const char *remoteService,
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const char *authScheme,
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const char *x509dname,
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2013-07-25 17:26:15 +00:00
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const char *saslUsername,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainBlockJobCallback)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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const char *diskAlias,
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int type,
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2013-07-25 17:26:15 +00:00
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int status,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainTrayChangeCallback)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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const char *devAlias,
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2013-07-25 17:26:15 +00:00
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int reason,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainPMWakeupCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainPMSuspendCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainBalloonChangeCallback)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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2013-07-25 17:26:15 +00:00
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unsigned long long actual,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainPMSuspendDiskCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainGuestPanicCallback)(qemuMonitorPtr mon,
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2013-07-25 17:26:15 +00:00
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virDomainObjPtr vm,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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typedef int (*qemuMonitorDomainDeviceDeletedCallback)(qemuMonitorPtr mon,
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virDomainObjPtr vm,
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2013-07-25 17:26:15 +00:00
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const char *devAlias,
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void *opaque);
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2013-07-25 15:27:52 +00:00
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2009-10-15 17:56:52 +00:00
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typedef struct _qemuMonitorCallbacks qemuMonitorCallbacks;
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typedef qemuMonitorCallbacks *qemuMonitorCallbacksPtr;
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struct _qemuMonitorCallbacks {
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2013-07-25 15:27:52 +00:00
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qemuMonitorDestroyCallback destroy;
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qemuMonitorEofNotifyCallback eofNotify;
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qemuMonitorErrorNotifyCallback errorNotify;
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qemuMonitorDiskSecretLookupCallback diskSecretLookup;
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qemuMonitorDomainShutdownCallback domainShutdown;
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qemuMonitorDomainResetCallback domainReset;
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qemuMonitorDomainPowerdownCallback domainPowerdown;
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qemuMonitorDomainStopCallback domainStop;
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qemuMonitorDomainResumeCallback domainResume;
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qemuMonitorDomainRTCChangeCallback domainRTCChange;
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qemuMonitorDomainWatchdogCallback domainWatchdog;
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qemuMonitorDomainIOErrorCallback domainIOError;
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qemuMonitorDomainGraphicsCallback domainGraphics;
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qemuMonitorDomainBlockJobCallback domainBlockJob;
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qemuMonitorDomainTrayChangeCallback domainTrayChange;
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qemuMonitorDomainPMWakeupCallback domainPMWakeup;
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qemuMonitorDomainPMSuspendCallback domainPMSuspend;
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qemuMonitorDomainBalloonChangeCallback domainBalloonChange;
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qemuMonitorDomainPMSuspendDiskCallback domainPMSuspendDisk;
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qemuMonitorDomainGuestPanicCallback domainGuestPanic;
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qemuMonitorDomainDeviceDeletedCallback domainDeviceDeleted;
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2009-10-15 17:56:52 +00:00
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};
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2009-11-26 13:37:11 +00:00
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char *qemuMonitorEscapeArg(const char *in);
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2012-02-26 00:48:02 +00:00
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char *qemuMonitorUnescapeArg(const char *in);
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2009-11-26 13:37:11 +00:00
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2009-10-09 19:13:29 +00:00
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qemuMonitorPtr qemuMonitorOpen(virDomainObjPtr vm,
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2011-01-07 23:36:25 +00:00
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virDomainChrSourceDefPtr config,
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2013-04-26 02:32:41 +00:00
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bool json,
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2013-07-25 17:26:15 +00:00
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qemuMonitorCallbacksPtr cb,
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void *opaque)
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2012-08-20 12:39:47 +00:00
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(4);
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2012-09-06 15:23:57 +00:00
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qemuMonitorPtr qemuMonitorOpenFD(virDomainObjPtr vm,
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int sockfd,
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2013-04-26 02:32:41 +00:00
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bool json,
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2013-07-25 17:26:15 +00:00
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qemuMonitorCallbacksPtr cb,
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void *opaque)
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2012-09-06 15:23:57 +00:00
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(4);
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2009-10-09 19:13:29 +00:00
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2010-06-10 14:11:30 +00:00
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void qemuMonitorClose(qemuMonitorPtr mon);
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2009-10-09 19:13:29 +00:00
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2012-09-13 14:54:02 +00:00
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int qemuMonitorSetCapabilities(qemuMonitorPtr mon);
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2010-02-12 13:45:20 +00:00
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2011-09-06 08:18:57 +00:00
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int qemuMonitorSetLink(qemuMonitorPtr mon,
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const char *name,
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2013-04-26 17:13:45 +00:00
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enum virDomainNetInterfaceLinkState state);
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2011-09-06 08:18:57 +00:00
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2011-03-09 20:24:04 +00:00
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|
|
/* These APIs are for use by the internal Text/JSON monitor impl code only */
|
2011-05-29 12:51:08 +00:00
|
|
|
char *qemuMonitorNextCommandID(qemuMonitorPtr mon);
|
Fully asynchronous monitor I/O processing
Change the QEMU monitor file handle watch to poll for both
read & write events, as well as EOF. All I/O to/from the
QEMU monitor FD is now done in the event callback thread.
When the QEMU driver needs to send a command, it puts the
data to be sent into a qemuMonitorMessagePtr object instance,
queues it for dispatch, and then goes to sleep on a condition
variable. The event thread sends all the data, and then waits
for the reply to arrive, putting the response / error data
back into the qemuMonitorMessagePtr and notifying the condition
variable.
There is a temporary hack in the disk passphrase callback to
avoid acquiring the domain lock. This avoids a deadlock in
the command processing, since the domain lock is still held
when running monitor commands. The next commit will remove
the locking when running commands & thus allow re-introduction
of locking the disk passphrase callback
* src/qemu/qemu_driver.c: Temporarily don't acquire lock in
disk passphrase callback. To be reverted in next commit
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h: Remove
raw I/O functions, and a generic qemuMonitorSend() for
invoking a command
* src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h:
Remove all low level I/O, and use the new qemuMonitorSend()
API. Provide a qemuMonitorTextIOProcess() method for detecting
command/reply/prompt boundaries in the monitor data stream
2009-10-14 17:40:51 +00:00
|
|
|
int qemuMonitorSend(qemuMonitorPtr mon,
|
|
|
|
|
qemuMonitorMessagePtr msg);
|
2013-04-26 17:13:45 +00:00
|
|
|
virJSONValuePtr qemuMonitorGetOptions(qemuMonitorPtr mon)
|
|
|
|
|
ATTRIBUTE_NONNULL(1);
|
|
|
|
|
void qemuMonitorSetOptions(qemuMonitorPtr mon, virJSONValuePtr options)
|
|
|
|
|
ATTRIBUTE_NONNULL(1);
|
2011-03-10 08:33:01 +00:00
|
|
|
int qemuMonitorHMPCommandWithFd(qemuMonitorPtr mon,
|
|
|
|
|
const char *cmd,
|
|
|
|
|
int scm_fd,
|
|
|
|
|
char **reply);
|
|
|
|
|
# define qemuMonitorHMPCommand(mon, cmd, reply) \
|
|
|
|
|
qemuMonitorHMPCommandWithFd(mon, cmd, -1, reply)
|
2009-10-09 18:07:55 +00:00
|
|
|
|
Fully asynchronous monitor I/O processing
Change the QEMU monitor file handle watch to poll for both
read & write events, as well as EOF. All I/O to/from the
QEMU monitor FD is now done in the event callback thread.
When the QEMU driver needs to send a command, it puts the
data to be sent into a qemuMonitorMessagePtr object instance,
queues it for dispatch, and then goes to sleep on a condition
variable. The event thread sends all the data, and then waits
for the reply to arrive, putting the response / error data
back into the qemuMonitorMessagePtr and notifying the condition
variable.
There is a temporary hack in the disk passphrase callback to
avoid acquiring the domain lock. This avoids a deadlock in
the command processing, since the domain lock is still held
when running monitor commands. The next commit will remove
the locking when running commands & thus allow re-introduction
of locking the disk passphrase callback
* src/qemu/qemu_driver.c: Temporarily don't acquire lock in
disk passphrase callback. To be reverted in next commit
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h: Remove
raw I/O functions, and a generic qemuMonitorSend() for
invoking a command
* src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h:
Remove all low level I/O, and use the new qemuMonitorSend()
API. Provide a qemuMonitorTextIOProcess() method for detecting
command/reply/prompt boundaries in the monitor data stream
2009-10-14 17:40:51 +00:00
|
|
|
/* XXX same comment about virConnectPtr as above */
|
2009-10-09 19:34:24 +00:00
|
|
|
int qemuMonitorGetDiskSecret(qemuMonitorPtr mon,
|
|
|
|
|
virConnectPtr conn,
|
|
|
|
|
const char *path,
|
|
|
|
|
char **secret,
|
|
|
|
|
size_t *secretLen);
|
2009-10-09 18:07:55 +00:00
|
|
|
|
2009-11-26 13:05:24 +00:00
|
|
|
int qemuMonitorEmitShutdown(qemuMonitorPtr mon);
|
|
|
|
|
int qemuMonitorEmitReset(qemuMonitorPtr mon);
|
|
|
|
|
int qemuMonitorEmitPowerdown(qemuMonitorPtr mon);
|
|
|
|
|
int qemuMonitorEmitStop(qemuMonitorPtr mon);
|
2013-01-07 21:25:01 +00:00
|
|
|
int qemuMonitorEmitResume(qemuMonitorPtr mon);
|
2010-03-18 18:28:15 +00:00
|
|
|
int qemuMonitorEmitRTCChange(qemuMonitorPtr mon, long long offset);
|
Add support for an explicit watchdog event
This introduces a new event type
VIR_DOMAIN_EVENT_ID_WATCHDOG
This event includes the action that is about to be taken
as a result of the watchdog triggering
typedef enum {
VIR_DOMAIN_EVENT_WATCHDOG_NONE = 0,
VIR_DOMAIN_EVENT_WATCHDOG_PAUSE,
VIR_DOMAIN_EVENT_WATCHDOG_RESET,
VIR_DOMAIN_EVENT_WATCHDOG_POWEROFF,
VIR_DOMAIN_EVENT_WATCHDOG_SHUTDOWN,
VIR_DOMAIN_EVENT_WATCHDOG_DEBUG,
} virDomainEventWatchdogAction;
Thus there is a new callback definition for this event type
typedef void (*virConnectDomainEventWatchdogCallback)(virConnectPtr conn,
virDomainPtr dom,
int action,
void *opaque);
* daemon/remote.c: Dispatch watchdog events to client
* examples/domain-events/events-c/event-test.c: Watch for
watchdog events
* include/libvirt/libvirt.h.in: Define new watchdg event ID
and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
src/libvirt_private.syms: Extend API to handle watchdog events
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
for watchdogs and emit a libvirt watchdog event
* src/remote/remote_driver.c: Receive and dispatch watchdog
events to application
* src/remote/remote_protocol.x: Wire protocol definition for
watchdog events
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c: Watch for WATCHDOG event
from QEMU monitor
2010-03-18 19:07:48 +00:00
|
|
|
int qemuMonitorEmitWatchdog(qemuMonitorPtr mon, int action);
|
Add support for an explicit IO error event
This introduces a new event type
VIR_DOMAIN_EVENT_ID_IO_ERROR
This event includes the action that is about to be taken
as a result of the watchdog triggering
typedef enum {
VIR_DOMAIN_EVENT_IO_ERROR_NONE = 0,
VIR_DOMAIN_EVENT_IO_ERROR_PAUSE,
VIR_DOMAIN_EVENT_IO_ERROR_REPORT,
} virDomainEventIOErrorAction;
In addition it has the source path of the disk that had the
error and its unique device alias. It does not include the
target device name (/dev/sda), since this would preclude
triggering IO errors from other file backed devices (eg
serial ports connected to a file)
Thus there is a new callback definition for this event type
typedef void (*virConnectDomainEventIOErrorCallback)(virConnectPtr conn,
virDomainPtr dom,
const char *srcPath,
const char *devAlias,
int action,
void *opaque);
This is currently wired up to the QEMU block IO error events
* daemon/remote.c: Dispatch IO error events to client
* examples/domain-events/events-c/event-test.c: Watch for
IO error events
* include/libvirt/libvirt.h.in: Define new IO error event ID
and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
src/libvirt_private.syms: Extend API to handle IO error events
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
for block IO errors and emit a libvirt IO error event
* src/remote/remote_driver.c: Receive and dispatch IO error
events to application
* src/remote/remote_protocol.x: Wire protocol definition for
IO error events
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c: Watch for BLOCK_IO_ERROR event
from QEMU monitor
2010-03-18 19:37:44 +00:00
|
|
|
int qemuMonitorEmitIOError(qemuMonitorPtr mon,
|
|
|
|
|
const char *diskAlias,
|
Add support for another explicit IO error event
This introduces a new event type
VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON
This event is the same as the previous VIR_DOMAIN_ID_IO_ERROR
event, but also includes a string describing the cause of
the event.
Thus there is a new callback definition for this event type
typedef void (*virConnectDomainEventIOErrorReasonCallback)(virConnectPtr conn,
virDomainPtr dom,
const char *srcPath,
const char *devAlias,
int action,
const char *reason,
void *opaque);
This is currently wired up to the QEMU block IO error events
* daemon/remote.c: Dispatch IO error events to client
* examples/domain-events/events-c/event-test.c: Watch for
IO error events
* include/libvirt/libvirt.h.in: Define new IO error event ID
and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
src/libvirt_private.syms: Extend API to handle IO error events
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
for block IO errors and emit a libvirt IO error event
* src/remote/remote_driver.c: Receive and dispatch IO error
events to application
* src/remote/remote_protocol.x: Wire protocol definition for
IO error events
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c: Watch for BLOCK_IO_ERROR event
from QEMU monitor
2010-03-18 19:37:44 +00:00
|
|
|
int action,
|
|
|
|
|
const char *reason);
|
Add domain events for graphics network clients
This introduces a new event type
VIR_DOMAIN_EVENT_ID_GRAPHICS
The same event can be emitted in 3 scenarios
typedef enum {
VIR_DOMAIN_EVENT_GRAPHICS_CONNECT = 0,
VIR_DOMAIN_EVENT_GRAPHICS_INITIALIZE,
VIR_DOMAIN_EVENT_GRAPHICS_DISCONNECT,
} virDomainEventGraphicsPhase;
Connect/disconnect are triggered at socket accept/close.
The initialize phase is immediately after the protocol
setup and authentication has completed. ie when the
client is authorized and about to start interacting with
the graphical desktop
This event comes with *a lot* of potential information
- IP address, port & address family of client
- IP address, port & address family of server
- Authentication scheme (arbitrary string)
- Authenticated subject identity. A subject may have
multiple identities with some authentication schemes.
For example, vencrypt+sasl results in a x509dname
and saslUsername identities.
This results in a very complicated callback :-(
typedef enum {
VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_IPV4,
VIR_DOMAIN_EVENT_GRAPHICS_ADDRESS_IPV6,
} virDomainEventGraphicsAddressType;
struct _virDomainEventGraphicsAddress {
int family;
const char *node;
const char *service;
};
typedef struct _virDomainEventGraphicsAddress virDomainEventGraphicsAddress;
typedef virDomainEventGraphicsAddress *virDomainEventGraphicsAddressPtr;
struct _virDomainEventGraphicsSubject {
int nidentity;
struct {
const char *type;
const char *name;
} *identities;
};
typedef struct _virDomainEventGraphicsSubject virDomainEventGraphicsSubject;
typedef virDomainEventGraphicsSubject *virDomainEventGraphicsSubjectPtr;
typedef void (*virConnectDomainEventGraphicsCallback)(virConnectPtr conn,
virDomainPtr dom,
int phase,
virDomainEventGraphicsAddressPtr local,
virDomainEventGraphicsAddressPtr remote,
const char *authScheme,
virDomainEventGraphicsSubjectPtr subject,
void *opaque);
The wire protocol is similarly complex
struct remote_domain_event_graphics_address {
int family;
remote_nonnull_string node;
remote_nonnull_string service;
};
const REMOTE_DOMAIN_EVENT_GRAPHICS_IDENTITY_MAX = 20;
struct remote_domain_event_graphics_identity {
remote_nonnull_string type;
remote_nonnull_string name;
};
struct remote_domain_event_graphics_msg {
remote_nonnull_domain dom;
int phase;
remote_domain_event_graphics_address local;
remote_domain_event_graphics_address remote;
remote_nonnull_string authScheme;
remote_domain_event_graphics_identity subject<REMOTE_DOMAIN_EVENT_GRAPHICS_IDENTITY_MAX>;
};
This is currently implemented in QEMU for the VNC graphics
protocol, but designed to be usable with SPICE graphics in
the future too.
* daemon/remote.c: Dispatch graphics events to client
* examples/domain-events/events-c/event-test.c: Watch for
graphics events
* include/libvirt/libvirt.h.in: Define new graphics event ID
and callback signature
* src/conf/domain_event.c, src/conf/domain_event.h,
src/libvirt_private.syms: Extend API to handle graphics events
* src/qemu/qemu_driver.c: Connect to the QEMU monitor event
for VNC events and emit a libvirt graphics event
* src/remote/remote_driver.c: Receive and dispatch graphics
events to application
* src/remote/remote_protocol.x: Wire protocol definition for
graphics events
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c: Watch for VNC_CONNECTED,
VNC_INITIALIZED & VNC_DISCONNETED events from QEMU monitor
2010-03-19 13:27:45 +00:00
|
|
|
int qemuMonitorEmitGraphics(qemuMonitorPtr mon,
|
|
|
|
|
int phase,
|
|
|
|
|
int localFamily,
|
|
|
|
|
const char *localNode,
|
|
|
|
|
const char *localService,
|
|
|
|
|
int remoteFamily,
|
|
|
|
|
const char *remoteNode,
|
|
|
|
|
const char *remoteService,
|
|
|
|
|
const char *authScheme,
|
|
|
|
|
const char *x509dname,
|
|
|
|
|
const char *saslUsername);
|
2012-03-23 13:44:50 +00:00
|
|
|
int qemuMonitorEmitTrayChange(qemuMonitorPtr mon,
|
|
|
|
|
const char *devAlias,
|
|
|
|
|
int reason);
|
2012-03-23 14:43:14 +00:00
|
|
|
int qemuMonitorEmitPMWakeup(qemuMonitorPtr mon);
|
2012-03-23 14:50:36 +00:00
|
|
|
int qemuMonitorEmitPMSuspend(qemuMonitorPtr mon);
|
2011-07-22 05:57:42 +00:00
|
|
|
int qemuMonitorEmitBlockJob(qemuMonitorPtr mon,
|
|
|
|
|
const char *diskAlias,
|
|
|
|
|
int type,
|
|
|
|
|
int status);
|
2012-07-12 15:45:57 +00:00
|
|
|
int qemuMonitorEmitBalloonChange(qemuMonitorPtr mon,
|
|
|
|
|
unsigned long long actual);
|
2012-10-12 19:13:39 +00:00
|
|
|
int qemuMonitorEmitPMSuspendDisk(qemuMonitorPtr mon);
|
2013-06-07 10:23:34 +00:00
|
|
|
int qemuMonitorEmitGuestPanic(qemuMonitorPtr mon);
|
2013-07-11 15:07:26 +00:00
|
|
|
int qemuMonitorEmitDeviceDeleted(qemuMonitorPtr mon,
|
|
|
|
|
const char *devAlias);
|
2011-07-22 05:57:42 +00:00
|
|
|
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorStartCPUs(qemuMonitorPtr mon,
|
|
|
|
|
virConnectPtr conn);
|
|
|
|
|
int qemuMonitorStopCPUs(qemuMonitorPtr mon);
|
2011-09-27 09:42:04 +00:00
|
|
|
|
|
|
|
|
typedef enum {
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_DEBUG,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_INMIGRATE,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_INTERNAL_ERROR,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_IO_ERROR,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_PAUSED,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_POSTMIGRATE,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_PRELAUNCH,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_FINISH_MIGRATE,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_RESTORE_VM,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_RUNNING,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_SAVE_VM,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_SHUTDOWN,
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_WATCHDOG,
|
2013-06-07 10:23:34 +00:00
|
|
|
QEMU_MONITOR_VM_STATUS_GUEST_PANICKED,
|
2011-09-27 09:42:04 +00:00
|
|
|
|
|
|
|
|
QEMU_MONITOR_VM_STATUS_LAST
|
|
|
|
|
} qemuMonitorVMStatus;
|
|
|
|
|
VIR_ENUM_DECL(qemuMonitorVMStatus)
|
|
|
|
|
int qemuMonitorVMStatusToPausedReason(const char *status);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorGetStatus(qemuMonitorPtr mon,
|
|
|
|
|
bool *running,
|
|
|
|
|
virDomainPausedReason *reason);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
2011-06-15 16:49:58 +00:00
|
|
|
int qemuMonitorSystemReset(qemuMonitorPtr mon);
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorSystemPowerdown(qemuMonitorPtr mon);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorGetCPUInfo(qemuMonitorPtr mon,
|
|
|
|
|
int **pids);
|
2011-06-17 14:31:45 +00:00
|
|
|
int qemuMonitorGetVirtType(qemuMonitorPtr mon,
|
|
|
|
|
int *virtType);
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorGetBalloonInfo(qemuMonitorPtr mon,
|
2012-03-02 20:27:39 +00:00
|
|
|
unsigned long long *currmem);
|
2010-04-12 11:31:15 +00:00
|
|
|
int qemuMonitorGetMemoryStats(qemuMonitorPtr mon,
|
|
|
|
|
virDomainMemoryStatPtr stats,
|
|
|
|
|
unsigned int nr_stats);
|
2013-06-27 15:00:31 +00:00
|
|
|
int qemuMonitorSetMemoryStatsPeriod(qemuMonitorPtr mon,
|
|
|
|
|
int period);
|
2012-01-18 21:01:30 +00:00
|
|
|
|
2012-01-19 16:58:58 +00:00
|
|
|
int qemuMonitorBlockIOStatusToError(const char *status);
|
2012-01-18 21:01:30 +00:00
|
|
|
virHashTablePtr qemuMonitorGetBlockInfo(qemuMonitorPtr mon);
|
|
|
|
|
struct qemuDomainDiskInfo *
|
|
|
|
|
qemuMonitorBlockInfoLookup(virHashTablePtr blockInfo,
|
|
|
|
|
const char *devname);
|
|
|
|
|
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorGetBlockStatsInfo(qemuMonitorPtr mon,
|
2011-09-16 12:05:58 +00:00
|
|
|
const char *dev_name,
|
2009-10-09 20:13:06 +00:00
|
|
|
long long *rd_req,
|
|
|
|
|
long long *rd_bytes,
|
2011-09-05 08:22:17 +00:00
|
|
|
long long *rd_total_times,
|
2009-10-09 20:13:06 +00:00
|
|
|
long long *wr_req,
|
|
|
|
|
long long *wr_bytes,
|
2011-09-05 08:22:17 +00:00
|
|
|
long long *wr_total_times,
|
|
|
|
|
long long *flush_req,
|
|
|
|
|
long long *flush_total_times,
|
2009-10-09 20:13:06 +00:00
|
|
|
long long *errs);
|
2011-09-05 08:22:17 +00:00
|
|
|
int qemuMonitorGetBlockStatsParamsNumber(qemuMonitorPtr mon,
|
|
|
|
|
int *nparams);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
2010-05-14 13:10:01 +00:00
|
|
|
int qemuMonitorGetBlockExtent(qemuMonitorPtr mon,
|
2011-09-16 12:05:58 +00:00
|
|
|
const char *dev_name,
|
2010-05-14 13:10:01 +00:00
|
|
|
unsigned long long *extent);
|
2011-11-29 07:34:53 +00:00
|
|
|
int qemuMonitorBlockResize(qemuMonitorPtr mon,
|
|
|
|
|
const char *devname,
|
|
|
|
|
unsigned long long size);
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorSetVNCPassword(qemuMonitorPtr mon,
|
|
|
|
|
const char *password);
|
2011-01-10 11:12:32 +00:00
|
|
|
int qemuMonitorSetPassword(qemuMonitorPtr mon,
|
|
|
|
|
int type,
|
|
|
|
|
const char *password,
|
|
|
|
|
const char *action_if_connected);
|
|
|
|
|
int qemuMonitorExpirePassword(qemuMonitorPtr mon,
|
|
|
|
|
int type,
|
|
|
|
|
const char *expire_time);
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorSetBalloon(qemuMonitorPtr mon,
|
|
|
|
|
unsigned long newmem);
|
2013-05-27 13:35:35 +00:00
|
|
|
int qemuMonitorSetCPU(qemuMonitorPtr mon, int cpu, bool online);
|
2010-02-08 16:37:17 +00:00
|
|
|
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
/* XXX should we pass the virDomainDiskDefPtr instead
|
|
|
|
|
* and hide devname details inside monitor. Reconsider
|
|
|
|
|
* this when doing the QMP implementation
|
|
|
|
|
*/
|
|
|
|
|
int qemuMonitorEjectMedia(qemuMonitorPtr mon,
|
2011-09-16 12:05:58 +00:00
|
|
|
const char *dev_name,
|
2010-11-08 17:52:48 +00:00
|
|
|
bool force);
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorChangeMedia(qemuMonitorPtr mon,
|
2011-09-16 12:05:58 +00:00
|
|
|
const char *dev_name,
|
2009-11-26 13:48:17 +00:00
|
|
|
const char *newmedia,
|
|
|
|
|
const char *format);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
int qemuMonitorSaveVirtualMemory(qemuMonitorPtr mon,
|
|
|
|
|
unsigned long long offset,
|
|
|
|
|
size_t length,
|
|
|
|
|
const char *path);
|
|
|
|
|
int qemuMonitorSavePhysicalMemory(qemuMonitorPtr mon,
|
|
|
|
|
unsigned long long offset,
|
|
|
|
|
size_t length,
|
|
|
|
|
const char *path);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorSetMigrationSpeed(qemuMonitorPtr mon,
|
|
|
|
|
unsigned long bandwidth);
|
|
|
|
|
|
2010-03-17 15:53:14 +00:00
|
|
|
int qemuMonitorSetMigrationDowntime(qemuMonitorPtr mon,
|
|
|
|
|
unsigned long long downtime);
|
|
|
|
|
|
2013-02-18 20:54:58 +00:00
|
|
|
int qemuMonitorGetMigrationCacheSize(qemuMonitorPtr mon,
|
|
|
|
|
unsigned long long *cacheSize);
|
|
|
|
|
int qemuMonitorSetMigrationCacheSize(qemuMonitorPtr mon,
|
|
|
|
|
unsigned long long cacheSize);
|
|
|
|
|
|
2009-10-09 20:13:06 +00:00
|
|
|
enum {
|
|
|
|
|
QEMU_MONITOR_MIGRATION_STATUS_INACTIVE,
|
|
|
|
|
QEMU_MONITOR_MIGRATION_STATUS_ACTIVE,
|
|
|
|
|
QEMU_MONITOR_MIGRATION_STATUS_COMPLETED,
|
|
|
|
|
QEMU_MONITOR_MIGRATION_STATUS_ERROR,
|
|
|
|
|
QEMU_MONITOR_MIGRATION_STATUS_CANCELLED,
|
2013-11-15 11:47:43 +00:00
|
|
|
QEMU_MONITOR_MIGRATION_STATUS_SETUP,
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
QEMU_MONITOR_MIGRATION_STATUS_LAST
|
|
|
|
|
};
|
|
|
|
|
|
2009-11-26 13:37:11 +00:00
|
|
|
VIR_ENUM_DECL(qemuMonitorMigrationStatus)
|
|
|
|
|
|
2013-02-08 08:58:03 +00:00
|
|
|
typedef struct _qemuMonitorMigrationStatus qemuMonitorMigrationStatus;
|
|
|
|
|
typedef qemuMonitorMigrationStatus *qemuMonitorMigrationStatusPtr;
|
|
|
|
|
struct _qemuMonitorMigrationStatus {
|
|
|
|
|
int status;
|
|
|
|
|
unsigned long long total_time;
|
|
|
|
|
/* total or expected depending on status */
|
|
|
|
|
bool downtime_set;
|
|
|
|
|
unsigned long long downtime;
|
|
|
|
|
|
|
|
|
|
unsigned long long ram_transferred;
|
|
|
|
|
unsigned long long ram_remaining;
|
|
|
|
|
unsigned long long ram_total;
|
|
|
|
|
bool ram_duplicate_set;
|
|
|
|
|
unsigned long long ram_duplicate;
|
|
|
|
|
unsigned long long ram_normal;
|
|
|
|
|
unsigned long long ram_normal_bytes;
|
|
|
|
|
|
|
|
|
|
unsigned long long disk_transferred;
|
|
|
|
|
unsigned long long disk_remaining;
|
|
|
|
|
unsigned long long disk_total;
|
|
|
|
|
|
|
|
|
|
bool xbzrle_set;
|
|
|
|
|
unsigned long long xbzrle_cache_size;
|
|
|
|
|
unsigned long long xbzrle_bytes;
|
|
|
|
|
unsigned long long xbzrle_pages;
|
|
|
|
|
unsigned long long xbzrle_cache_miss;
|
|
|
|
|
unsigned long long xbzrle_overflow;
|
|
|
|
|
};
|
|
|
|
|
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorGetMigrationStatus(qemuMonitorPtr mon,
|
2013-02-08 08:58:03 +00:00
|
|
|
qemuMonitorMigrationStatusPtr status);
|
2012-09-20 09:15:31 +00:00
|
|
|
int qemuMonitorGetSpiceMigrationStatus(qemuMonitorPtr mon,
|
|
|
|
|
bool *spice_migrated);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
2013-01-14 11:45:20 +00:00
|
|
|
typedef enum {
|
|
|
|
|
QEMU_MONITOR_MIGRATION_CAPS_XBZRLE,
|
|
|
|
|
|
|
|
|
|
QEMU_MONITOR_MIGRATION_CAPS_LAST
|
|
|
|
|
} qemuMonitorMigrationCaps;
|
|
|
|
|
|
|
|
|
|
VIR_ENUM_DECL(qemuMonitorMigrationCaps);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorGetMigrationCapability(qemuMonitorPtr mon,
|
|
|
|
|
qemuMonitorMigrationCaps capability);
|
|
|
|
|
int qemuMonitorSetMigrationCapability(qemuMonitorPtr mon,
|
|
|
|
|
qemuMonitorMigrationCaps capability);
|
|
|
|
|
|
2010-05-04 21:36:42 +00:00
|
|
|
typedef enum {
|
2010-12-21 15:58:03 +00:00
|
|
|
QEMU_MONITOR_MIGRATE_BACKGROUND = 1 << 0,
|
2010-05-04 21:36:42 +00:00
|
|
|
QEMU_MONITOR_MIGRATE_NON_SHARED_DISK = 1 << 1, /* migration with non-shared storage with full disk copy */
|
|
|
|
|
QEMU_MONITOR_MIGRATE_NON_SHARED_INC = 1 << 2, /* migration with non-shared storage with incremental copy */
|
|
|
|
|
QEMU_MONITOR_MIGRATION_FLAGS_LAST
|
|
|
|
|
} QEMU_MONITOR_MIGRATE;
|
|
|
|
|
|
2011-03-02 04:37:30 +00:00
|
|
|
int qemuMonitorMigrateToFd(qemuMonitorPtr mon,
|
|
|
|
|
unsigned int flags,
|
|
|
|
|
int fd);
|
|
|
|
|
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorMigrateToHost(qemuMonitorPtr mon,
|
2010-06-24 18:58:36 +00:00
|
|
|
unsigned int flags,
|
2009-10-09 20:13:06 +00:00
|
|
|
const char *hostname,
|
|
|
|
|
int port);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorMigrateToCommand(qemuMonitorPtr mon,
|
2010-06-24 18:58:36 +00:00
|
|
|
unsigned int flags,
|
2010-04-21 13:06:37 +00:00
|
|
|
const char * const *argv);
|
|
|
|
|
|
2010-06-10 02:23:51 +00:00
|
|
|
/* In general, BS is the smallest fundamental block size we can use to
|
|
|
|
|
* access a block device; everything must be aligned to a multiple of
|
|
|
|
|
* this. Linux generally supports a BS as small as 512, but with
|
|
|
|
|
* newer disks with 4k sectors, performance is better if we guarantee
|
|
|
|
|
* alignment to the sector size. However, operating on BS-sized
|
|
|
|
|
* blocks is painfully slow, so we also have a transfer size that is
|
|
|
|
|
* larger but only aligned to the smaller block size.
|
2010-06-04 03:36:00 +00:00
|
|
|
*/
|
2010-06-10 02:23:51 +00:00
|
|
|
# define QEMU_MONITOR_MIGRATE_TO_FILE_BS (1024llu * 4)
|
|
|
|
|
# define QEMU_MONITOR_MIGRATE_TO_FILE_TRANSFER_SIZE (1024llu * 1024)
|
2010-04-21 13:06:37 +00:00
|
|
|
|
|
|
|
|
int qemuMonitorMigrateToFile(qemuMonitorPtr mon,
|
2010-06-24 18:58:36 +00:00
|
|
|
unsigned int flags,
|
2010-04-21 13:06:37 +00:00
|
|
|
const char * const *argv,
|
|
|
|
|
const char *target,
|
|
|
|
|
unsigned long long offset);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
int qemuMonitorMigrateToUnix(qemuMonitorPtr mon,
|
2010-06-24 18:58:36 +00:00
|
|
|
unsigned int flags,
|
2009-10-09 20:13:06 +00:00
|
|
|
const char *unixfile);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorMigrateCancel(qemuMonitorPtr mon);
|
|
|
|
|
|
2012-06-12 03:04:51 +00:00
|
|
|
int qemuMonitorDumpToFd(qemuMonitorPtr mon,
|
2012-09-17 19:05:29 +00:00
|
|
|
int fd);
|
2012-06-12 03:04:51 +00:00
|
|
|
|
2011-02-17 13:39:36 +00:00
|
|
|
int qemuMonitorGraphicsRelocate(qemuMonitorPtr mon,
|
|
|
|
|
int type,
|
|
|
|
|
const char *hostname,
|
|
|
|
|
int port,
|
|
|
|
|
int tlsPort,
|
|
|
|
|
const char *tlsSubject);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
/* XXX disk driver type eg, qcow/etc.
|
|
|
|
|
* XXX cache mode
|
|
|
|
|
*/
|
|
|
|
|
int qemuMonitorAddUSBDisk(qemuMonitorPtr mon,
|
|
|
|
|
const char *path);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorAddUSBDeviceExact(qemuMonitorPtr mon,
|
|
|
|
|
int bus,
|
|
|
|
|
int dev);
|
|
|
|
|
int qemuMonitorAddUSBDeviceMatch(qemuMonitorPtr mon,
|
|
|
|
|
int vendor,
|
|
|
|
|
int product);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
int qemuMonitorAddPCIHostDevice(qemuMonitorPtr mon,
|
2012-08-16 15:41:06 +00:00
|
|
|
virDevicePCIAddress *hostAddr,
|
|
|
|
|
virDevicePCIAddress *guestAddr);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
/* XXX disk driver type eg, qcow/etc.
|
|
|
|
|
* XXX cache mode
|
|
|
|
|
*/
|
|
|
|
|
int qemuMonitorAddPCIDisk(qemuMonitorPtr mon,
|
|
|
|
|
const char *path,
|
|
|
|
|
const char *bus,
|
2012-08-16 15:41:06 +00:00
|
|
|
virDevicePCIAddress *guestAddr);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
/* XXX do we really want to hardcode 'nicstr' as the
|
|
|
|
|
* sendable item here
|
|
|
|
|
*/
|
|
|
|
|
int qemuMonitorAddPCINetwork(qemuMonitorPtr mon,
|
|
|
|
|
const char *nicstr,
|
2012-08-16 15:41:06 +00:00
|
|
|
virDevicePCIAddress *guestAddr);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
int qemuMonitorRemovePCIDevice(qemuMonitorPtr mon,
|
2012-08-16 15:41:06 +00:00
|
|
|
virDevicePCIAddress *guestAddr);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
int qemuMonitorSendFileHandle(qemuMonitorPtr mon,
|
|
|
|
|
const char *fdname,
|
|
|
|
|
int fd);
|
2013-01-31 00:18:44 +00:00
|
|
|
int qemuMonitorAddFd(qemuMonitorPtr mon, int fdset, int fd, const char *name);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
2013-01-31 00:18:44 +00:00
|
|
|
/* These two functions preserve previous error and only set their own
|
|
|
|
|
* error if no error was set before.
|
2011-07-13 09:16:20 +00:00
|
|
|
*/
|
2009-10-09 20:13:06 +00:00
|
|
|
int qemuMonitorCloseFileHandle(qemuMonitorPtr mon,
|
|
|
|
|
const char *fdname);
|
2013-01-31 00:18:44 +00:00
|
|
|
int qemuMonitorRemoveFd(qemuMonitorPtr mon, int fdset, int fd);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
/* XXX do we really want to hardcode 'netstr' as the
|
|
|
|
|
* sendable item here
|
|
|
|
|
*/
|
|
|
|
|
int qemuMonitorAddHostNetwork(qemuMonitorPtr mon,
|
2011-03-16 02:21:45 +00:00
|
|
|
const char *netstr,
|
2013-05-21 13:50:09 +00:00
|
|
|
int *tapfd, char **tapfdName, int tapfdSize,
|
|
|
|
|
int *vhostfd, char **vhostfdName, int vhostfdSize);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
|
|
|
|
int qemuMonitorRemoveHostNetwork(qemuMonitorPtr mon,
|
|
|
|
|
int vlan,
|
|
|
|
|
const char *netname);
|
|
|
|
|
|
2010-04-15 13:52:03 +00:00
|
|
|
int qemuMonitorAddNetdev(qemuMonitorPtr mon,
|
2011-03-16 02:21:45 +00:00
|
|
|
const char *netdevstr,
|
2013-05-21 13:50:09 +00:00
|
|
|
int *tapfd, char **tapfdName, int tapfdSize,
|
|
|
|
|
int *vhostfd, char **vhostfdName, int vhostfdSize);
|
2010-04-15 13:52:03 +00:00
|
|
|
|
|
|
|
|
int qemuMonitorRemoveNetdev(qemuMonitorPtr mon,
|
|
|
|
|
const char *alias);
|
|
|
|
|
|
2009-12-14 09:50:01 +00:00
|
|
|
int qemuMonitorGetPtyPaths(qemuMonitorPtr mon,
|
|
|
|
|
virHashTablePtr paths);
|
2009-10-09 20:13:06 +00:00
|
|
|
|
2009-12-07 19:28:05 +00:00
|
|
|
int qemuMonitorAttachPCIDiskController(qemuMonitorPtr mon,
|
|
|
|
|
const char *bus,
|
2012-08-16 15:41:06 +00:00
|
|
|
virDevicePCIAddress *guestAddr);
|
2009-12-07 19:28:05 +00:00
|
|
|
|
Properly support SCSI drive hotplug
The current SCSI hotplug support attaches a brand new SCSI controller
for every disk. This is broken because the semantics differ from those
used when starting the VM initially. In the latter case, each SCSI
controller is filled before a new one is added.
If the user specifies an high drive index (sdazz) then at initial
startup, many intermediate SCSI controllers may be added with no
drives.
This patch changes SCSI hotplug so that it exactly matches the
behaviour of initial startup. First the SCSI controller number is
determined for the drive to be hotplugged. If any controller upto
and including that controller number is not yet present, it is
attached. Then finally the drive is attached to the last controller.
NB, this breaks SCSI hotunplug, because there is no 'drive_del'
command in current QEMU. Previous SCSI hotunplug was broken in
any case because it was unplugging the entire controller, not
just the drive in question.
A future QEMU will allow proper SCSI hotunplug of a drive.
This patch is derived from work done by Wolfgang Mauerer on disk
controllers.
* src/qemu/qemu_driver.c: Fix SCSI hotplug to add a drive to
the correct controller, instead of just attaching a new
controller.
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_json.h,
src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h: Add
support for 'drive_add' command
2009-12-09 17:57:09 +00:00
|
|
|
int qemuMonitorAttachDrive(qemuMonitorPtr mon,
|
|
|
|
|
const char *drivestr,
|
2012-08-16 15:41:06 +00:00
|
|
|
virDevicePCIAddress *controllerAddr,
|
Properly support SCSI drive hotplug
The current SCSI hotplug support attaches a brand new SCSI controller
for every disk. This is broken because the semantics differ from those
used when starting the VM initially. In the latter case, each SCSI
controller is filled before a new one is added.
If the user specifies an high drive index (sdazz) then at initial
startup, many intermediate SCSI controllers may be added with no
drives.
This patch changes SCSI hotplug so that it exactly matches the
behaviour of initial startup. First the SCSI controller number is
determined for the drive to be hotplugged. If any controller upto
and including that controller number is not yet present, it is
attached. Then finally the drive is attached to the last controller.
NB, this breaks SCSI hotunplug, because there is no 'drive_del'
command in current QEMU. Previous SCSI hotunplug was broken in
any case because it was unplugging the entire controller, not
just the drive in question.
A future QEMU will allow proper SCSI hotunplug of a drive.
This patch is derived from work done by Wolfgang Mauerer on disk
controllers.
* src/qemu/qemu_driver.c: Fix SCSI hotplug to add a drive to
the correct controller, instead of just attaching a new
controller.
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_json.h,
src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h: Add
support for 'drive_add' command
2009-12-09 17:57:09 +00:00
|
|
|
virDomainDeviceDriveAddress *driveAddr);
|
|
|
|
|
|
Detect PCI addresses at QEMU startup
Hotunplug of devices requires that we know their PCI address. Even
hotplug of SCSI drives, required that we know the PCI address of
the SCSI controller to attach the drive to. We can find this out
by running 'info pci' and then correlating the vendor/product IDs
with the devices we booted with.
Although this approach is somewhat fragile, it is the only viable
option with QEMU < 0.12, since there is no way for libvirto set
explicit PCI addresses when creating devices in the first place.
For QEMU > 0.12, this code will not be used.
* src/qemu/qemu_driver.c: Assign all dynamic PCI addresses on
startup of QEMU VM, matching vendor/product IDs
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_json.h,
src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h: Add
API for fetching PCI device address mapping
2009-12-09 21:59:04 +00:00
|
|
|
|
|
|
|
|
typedef struct _qemuMonitorPCIAddress qemuMonitorPCIAddress;
|
|
|
|
|
struct _qemuMonitorPCIAddress {
|
|
|
|
|
unsigned int vendor;
|
|
|
|
|
unsigned int product;
|
2012-08-16 15:41:06 +00:00
|
|
|
virDevicePCIAddress addr;
|
Detect PCI addresses at QEMU startup
Hotunplug of devices requires that we know their PCI address. Even
hotplug of SCSI drives, required that we know the PCI address of
the SCSI controller to attach the drive to. We can find this out
by running 'info pci' and then correlating the vendor/product IDs
with the devices we booted with.
Although this approach is somewhat fragile, it is the only viable
option with QEMU < 0.12, since there is no way for libvirto set
explicit PCI addresses when creating devices in the first place.
For QEMU > 0.12, this code will not be used.
* src/qemu/qemu_driver.c: Assign all dynamic PCI addresses on
startup of QEMU VM, matching vendor/product IDs
* src/qemu/qemu_monitor.c, src/qemu/qemu_monitor.h,
src/qemu/qemu_monitor_json.c, src/qemu/qemu_monitor_json.h,
src/qemu/qemu_monitor_text.c, src/qemu/qemu_monitor_text.h: Add
API for fetching PCI device address mapping
2009-12-09 21:59:04 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
int qemuMonitorGetAllPCIAddresses(qemuMonitorPtr mon,
|
|
|
|
|
qemuMonitorPCIAddress **addrs);
|
|
|
|
|
|
2010-01-26 15:34:46 +00:00
|
|
|
int qemuMonitorAddDevice(qemuMonitorPtr mon,
|
|
|
|
|
const char *devicestr);
|
|
|
|
|
|
2011-03-15 23:10:16 +00:00
|
|
|
int qemuMonitorAddDeviceWithFd(qemuMonitorPtr mon,
|
|
|
|
|
const char *devicestr,
|
|
|
|
|
int fd,
|
|
|
|
|
const char *fdname);
|
|
|
|
|
|
2010-03-02 08:40:51 +00:00
|
|
|
int qemuMonitorDelDevice(qemuMonitorPtr mon,
|
2010-04-14 14:36:42 +00:00
|
|
|
const char *devalias);
|
2010-03-02 08:40:51 +00:00
|
|
|
|
2010-01-26 15:34:46 +00:00
|
|
|
int qemuMonitorAddDrive(qemuMonitorPtr mon,
|
|
|
|
|
const char *drivestr);
|
|
|
|
|
|
2010-12-08 21:30:12 +00:00
|
|
|
int qemuMonitorDriveDel(qemuMonitorPtr mon,
|
2010-10-22 14:14:22 +00:00
|
|
|
const char *drivestr);
|
|
|
|
|
|
2010-02-11 14:28:16 +00:00
|
|
|
int qemuMonitorSetDrivePassphrase(qemuMonitorPtr mon,
|
|
|
|
|
const char *alias,
|
|
|
|
|
const char *passphrase);
|
|
|
|
|
|
2010-04-02 14:10:37 +00:00
|
|
|
int qemuMonitorCreateSnapshot(qemuMonitorPtr mon, const char *name);
|
|
|
|
|
int qemuMonitorLoadSnapshot(qemuMonitorPtr mon, const char *name);
|
|
|
|
|
int qemuMonitorDeleteSnapshot(qemuMonitorPtr mon, const char *name);
|
|
|
|
|
|
2011-08-15 23:25:54 +00:00
|
|
|
int qemuMonitorDiskSnapshot(qemuMonitorPtr mon,
|
2012-03-17 04:17:28 +00:00
|
|
|
virJSONValuePtr actions,
|
2011-08-15 23:25:54 +00:00
|
|
|
const char *device,
|
snapshot: improve qemu handling of reused snapshot targets
The oVirt developers have stated that the real reasons they want
to have qemu reuse existing volumes when creating a snapshot are:
1. the management framework is set up so that creation has to be
done from a central node for proper resource tracking, and having
libvirt and/or qemu create things violates the framework, and
2. qemu defaults to creating snapshots with an absolute path to
the backing file, but oVirt wants to manage a backing chain that
uses just relative names, to allow for easier migration of a chain
across storage locations.
When 0.9.10 added VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT (commit
4e9953a4), it only addressed point 1, but libvirt was still using
O_TRUNC which violates point 2. Meanwhile, the new qemu
'transaction' monitor command includes a new optional mode argument
that will force qemu to reuse the metadata of the file it just
opened (with the burden on the caller to have valid metadata there
in the first place). So, this tweaks the meaning of the flag to
cover both points as intended for use by oVirt. It is not strictly
backward-compatible to 0.9.10 behavior, but it can be argued that
the O_TRUNC of 0.9.10 was a bug.
Note that this flag is all-or-nothing, and only selects between
'existing' and the default 'absolute-paths'. A more flexible
approach that would allow per-disk selections, as well as adding
support for the 'no-backing-file' mode, would be possible by
extending the <domainsnapshot> xml to have a per-disk mode, but
until we have a management application expressing a need for that
additional complexity, it is not worth doing.
* src/libvirt.c (virDomainSnapshotCreateXML): Tweak documentation.
* src/qemu/qemu_monitor.h (qemuMonitorDiskSnapshot): Add
parameters.
* src/qemu/qemu_monitor_json.h (qemuMonitorJSONDiskSnapshot):
Likewise.
* src/qemu/qemu_monitor.c (qemuMonitorDiskSnapshot): Pass them
through.
* src/qemu/qemu_monitor_json.c (qemuMonitorJSONDiskSnapshot): Use
new monitor command arguments.
* src/qemu/qemu_driver.c (qemuDomainSnapshotCreateDiskActive)
(qemuDomainSnapshotCreateSingleDiskActive): Adjust callers.
(qemuDomainSnapshotDiskPrepare): Allow qed, modify rules on reuse.
2012-03-20 21:03:45 +00:00
|
|
|
const char *file,
|
|
|
|
|
const char *format,
|
|
|
|
|
bool reuse);
|
2012-03-17 04:17:28 +00:00
|
|
|
int qemuMonitorTransaction(qemuMonitorPtr mon, virJSONValuePtr actions)
|
|
|
|
|
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
|
blockjob: add qemu capabilities related to block jobs
Upstream qemu 1.3 is adding two new monitor commands, 'drive-mirror'
and 'block-job-complete'[1], which can drive live block copy and
storage migration. [Additionally, RHEL 6.3 had backported an earlier
version of most of the same functionality, but under the names
'__com.redhat_drive-mirror' and '__com.redhat_drive-reopen' and with
slightly different JSON arguments, and has been using patches similar
to these upstream patches for several months now.]
The libvirt API virDomainBlockRebase as already committed for 0.9.12
is flexible enough to expose the basics of block copy, but some
additional features in the 'drive-mirror' qemu command, such as
setting error policy, setting granularity, or using a persistent
bitmap, may later require a new libvirt API virDomainBlockCopy. I
will wait to add that API until we know more about what qemu 1.3
will finally provide.
This patch caters only to the upstream qemu 1.3 interface, although
I have proven that the changes for RHEL 6.3 can be isolated to
just qemu_monitor_json.c, and the rest of this series will
gracefully handle either interface once the JSON differences are
papered over in a downstream patch.
For consistency with other block job commands, libvirt must handle
the bandwidth argument as MiB/sec from the user, even though qemu
exposes the speed argument as bytes/sec; then again, qemu rounds
up to cluster size internally, so using MiB hides the worst effects
of that rounding if you pass small numbers.
[1]https://lists.gnu.org/archive/html/qemu-devel/2012-10/msg04123.html
* src/qemu/qemu_capabilities.h (QEMU_CAPS_DRIVE_MIRROR)
(QEMU_CAPS_DRIVE_REOPEN): New bits.
* src/qemu/qemu_capabilities.c (qemuCaps): Name them.
* src/qemu/qemu_monitor_json.c (qemuMonitorJSONCheckCommands): Set
them.
(qemuMonitorJSONDriveMirror, qemuMonitorDrivePivot): New functions.
* src/qemu/qemu_monitor_json.h (qemuMonitorJSONDriveMirror)
(qemuMonitorDrivePivot): Declare them.
* src/qemu/qemu_monitor.c (qemuMonitorDriveMirror)
(qemuMonitorDrivePivot): New passthroughs.
* src/qemu/qemu_monitor.h (qemuMonitorDriveMirror)
(qemuMonitorDrivePivot): Declare them.
2012-09-28 23:29:53 +00:00
|
|
|
int qemuMonitorDriveMirror(qemuMonitorPtr mon,
|
|
|
|
|
const char *device,
|
|
|
|
|
const char *file,
|
|
|
|
|
const char *format,
|
|
|
|
|
unsigned long bandwidth,
|
|
|
|
|
unsigned int flags)
|
|
|
|
|
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
|
|
|
|
|
int qemuMonitorDrivePivot(qemuMonitorPtr mon,
|
|
|
|
|
const char *device,
|
|
|
|
|
const char *file,
|
|
|
|
|
const char *format)
|
|
|
|
|
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
|
2011-08-15 23:25:54 +00:00
|
|
|
|
2012-10-03 21:13:21 +00:00
|
|
|
int qemuMonitorBlockCommit(qemuMonitorPtr mon,
|
|
|
|
|
const char *device,
|
|
|
|
|
const char *top,
|
|
|
|
|
const char *base,
|
|
|
|
|
unsigned long bandwidth)
|
|
|
|
|
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
|
|
|
|
|
|
2011-02-02 15:37:10 +00:00
|
|
|
int qemuMonitorArbitraryCommand(qemuMonitorPtr mon,
|
|
|
|
|
const char *cmd,
|
|
|
|
|
char **reply,
|
|
|
|
|
bool hmp);
|
2010-04-17 02:12:45 +00:00
|
|
|
|
2011-05-10 08:26:06 +00:00
|
|
|
int qemuMonitorInjectNMI(qemuMonitorPtr mon);
|
|
|
|
|
|
2011-04-01 06:23:58 +00:00
|
|
|
int qemuMonitorScreendump(qemuMonitorPtr mon,
|
|
|
|
|
const char *file);
|
|
|
|
|
|
2011-07-21 07:55:56 +00:00
|
|
|
int qemuMonitorSendKey(qemuMonitorPtr mon,
|
|
|
|
|
unsigned int holdtime,
|
|
|
|
|
unsigned int *keycodes,
|
|
|
|
|
unsigned int nkeycodes);
|
|
|
|
|
|
2011-07-22 05:39:37 +00:00
|
|
|
typedef enum {
|
blockjob: fix block-stream bandwidth race
With RHEL 6.2, virDomainBlockPull(dom, dev, bandwidth, 0) has a race
with non-zero bandwidth: there is a window between the block_stream
and block_job_set_speed monitor commands where an unlimited amount
of data was let through, defeating the point of a throttle.
This race was first identified in commit a9d3495e, and libvirt was
able to reduce the size of the window for that race. In the meantime,
the qemu developers decided to fix things properly; per this message:
https://lists.gnu.org/archive/html/qemu-devel/2012-04/msg03793.html
the fix will be in qemu 1.1, and changes block-job-set-speed to use
a different parameter name, as well as adding a new optional parameter
to block-stream, which eliminates the race altogether.
Since our documentation already mentioned that we can refuse a non-zero
bandwidth for some hypervisors, I think the best solution is to do
just that for RHEL 6.2 qemu, so that the race is obvious to the user
(anyone using stock RHEL 6.2 binaries won't have this patch, and anyone
building their own libvirt with this patch for RHEL can also rebuild
qemu to get the modern semantics, so it is no real loss in behavior).
Meanwhile the code must be fixed to honor actual qemu 1.1 naming.
Rename the parameter to 'modern', since the naming difference now
covers more than just 'async' block-job-cancel. And while at it,
fix an unchecked integer overflow.
* src/qemu/qemu_monitor.h (enum BLOCK_JOB_CMD): Drop unused value,
rename enum to match conventions.
* src/qemu/qemu_monitor.c (qemuMonitorBlockJob): Reflect enum rename.
* src/qemu_qemu_monitor_json.h (qemuMonitorJSONBlockJob): Likewise.
* src/qemu/qemu_monitor_json.c (qemuMonitorJSONBlockJob): Likewise,
and support difference between RHEL 6.2 and qemu 1.1 block pull.
* src/qemu/qemu_driver.c (qemuDomainBlockJobImpl): Reject
bandwidth during pull with too-old qemu.
* src/libvirt.c (virDomainBlockPull, virDomainBlockRebase):
Document this.
2012-04-25 22:49:44 +00:00
|
|
|
BLOCK_JOB_ABORT,
|
|
|
|
|
BLOCK_JOB_INFO,
|
|
|
|
|
BLOCK_JOB_SPEED,
|
|
|
|
|
BLOCK_JOB_PULL,
|
|
|
|
|
} qemuMonitorBlockJobCmd;
|
2011-07-22 05:39:37 +00:00
|
|
|
|
|
|
|
|
int qemuMonitorBlockJob(qemuMonitorPtr mon,
|
|
|
|
|
const char *device,
|
2012-02-18 16:20:01 +00:00
|
|
|
const char *back,
|
2011-07-22 05:39:37 +00:00
|
|
|
unsigned long bandwidth,
|
|
|
|
|
virDomainBlockJobInfoPtr info,
|
blockjob: fix block-stream bandwidth race
With RHEL 6.2, virDomainBlockPull(dom, dev, bandwidth, 0) has a race
with non-zero bandwidth: there is a window between the block_stream
and block_job_set_speed monitor commands where an unlimited amount
of data was let through, defeating the point of a throttle.
This race was first identified in commit a9d3495e, and libvirt was
able to reduce the size of the window for that race. In the meantime,
the qemu developers decided to fix things properly; per this message:
https://lists.gnu.org/archive/html/qemu-devel/2012-04/msg03793.html
the fix will be in qemu 1.1, and changes block-job-set-speed to use
a different parameter name, as well as adding a new optional parameter
to block-stream, which eliminates the race altogether.
Since our documentation already mentioned that we can refuse a non-zero
bandwidth for some hypervisors, I think the best solution is to do
just that for RHEL 6.2 qemu, so that the race is obvious to the user
(anyone using stock RHEL 6.2 binaries won't have this patch, and anyone
building their own libvirt with this patch for RHEL can also rebuild
qemu to get the modern semantics, so it is no real loss in behavior).
Meanwhile the code must be fixed to honor actual qemu 1.1 naming.
Rename the parameter to 'modern', since the naming difference now
covers more than just 'async' block-job-cancel. And while at it,
fix an unchecked integer overflow.
* src/qemu/qemu_monitor.h (enum BLOCK_JOB_CMD): Drop unused value,
rename enum to match conventions.
* src/qemu/qemu_monitor.c (qemuMonitorBlockJob): Reflect enum rename.
* src/qemu_qemu_monitor_json.h (qemuMonitorJSONBlockJob): Likewise.
* src/qemu/qemu_monitor_json.c (qemuMonitorJSONBlockJob): Likewise,
and support difference between RHEL 6.2 and qemu 1.1 block pull.
* src/qemu/qemu_driver.c (qemuDomainBlockJobImpl): Reject
bandwidth during pull with too-old qemu.
* src/libvirt.c (virDomainBlockPull, virDomainBlockRebase):
Document this.
2012-04-25 22:49:44 +00:00
|
|
|
qemuMonitorBlockJobCmd mode,
|
|
|
|
|
bool modern)
|
2012-04-11 21:40:16 +00:00
|
|
|
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);
|
2011-07-22 05:39:37 +00:00
|
|
|
|
2011-10-21 08:00:13 +00:00
|
|
|
int qemuMonitorOpenGraphics(qemuMonitorPtr mon,
|
|
|
|
|
const char *protocol,
|
|
|
|
|
int fd,
|
|
|
|
|
const char *fdname,
|
|
|
|
|
bool skipauth);
|
|
|
|
|
|
2011-11-15 09:02:45 +00:00
|
|
|
int qemuMonitorSetBlockIoThrottle(qemuMonitorPtr mon,
|
|
|
|
|
const char *device,
|
|
|
|
|
virDomainBlockIoTuneInfoPtr info);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorGetBlockIoThrottle(qemuMonitorPtr mon,
|
|
|
|
|
const char *device,
|
|
|
|
|
virDomainBlockIoTuneInfoPtr reply);
|
|
|
|
|
|
2012-02-10 12:33:52 +00:00
|
|
|
int qemuMonitorSystemWakeup(qemuMonitorPtr mon);
|
|
|
|
|
|
2012-08-15 14:04:09 +00:00
|
|
|
int qemuMonitorGetVersion(qemuMonitorPtr mon,
|
|
|
|
|
int *major,
|
|
|
|
|
int *minor,
|
|
|
|
|
int *micro,
|
|
|
|
|
char **package)
|
|
|
|
|
ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4);
|
|
|
|
|
|
2012-08-15 15:18:41 +00:00
|
|
|
|
|
|
|
|
typedef struct _qemuMonitorMachineInfo qemuMonitorMachineInfo;
|
|
|
|
|
typedef qemuMonitorMachineInfo *qemuMonitorMachineInfoPtr;
|
|
|
|
|
|
|
|
|
|
struct _qemuMonitorMachineInfo {
|
|
|
|
|
char *name;
|
|
|
|
|
bool isDefault;
|
|
|
|
|
char *alias;
|
2013-06-26 15:46:35 +00:00
|
|
|
unsigned int maxCpus;
|
2012-08-15 15:18:41 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
int qemuMonitorGetMachines(qemuMonitorPtr mon,
|
|
|
|
|
qemuMonitorMachineInfoPtr **machines);
|
|
|
|
|
|
|
|
|
|
void qemuMonitorMachineInfoFree(qemuMonitorMachineInfoPtr machine);
|
|
|
|
|
|
2012-08-20 14:58:20 +00:00
|
|
|
int qemuMonitorGetCPUDefinitions(qemuMonitorPtr mon,
|
|
|
|
|
char ***cpus);
|
|
|
|
|
|
2012-08-22 09:25:20 +00:00
|
|
|
int qemuMonitorGetCommands(qemuMonitorPtr mon,
|
|
|
|
|
char ***commands);
|
2012-08-22 09:48:41 +00:00
|
|
|
int qemuMonitorGetEvents(qemuMonitorPtr mon,
|
|
|
|
|
char ***events);
|
2013-04-26 17:13:45 +00:00
|
|
|
int qemuMonitorGetCommandLineOptionParameters(qemuMonitorPtr mon,
|
|
|
|
|
const char *option,
|
|
|
|
|
char ***params);
|
2012-08-22 09:25:20 +00:00
|
|
|
|
Make non-KVM machines work with QMP probing
When there is no 'qemu-kvm' binary and the emulator used for a machine
is, for example, 'qemu-system-x86_64' that, by default, runs without
kvm enabled, libvirt still supplies '-no-kvm' option to this process,
even though it does not recognize such option (making the start of a
domain fail in that case).
This patch fixes building a command-line for QEMU machines without KVM
acceleration and is based on following assumptions:
- QEMU_CAPS_KVM flag means that QEMU is running KVM accelerated
machines by default (without explicitly requesting that using a
command-line option). It is the closest to the truth according to
the code with the only exception being the comment next to the
flag, so it's fixed in this patch as well.
- QEMU_CAPS_ENABLE_KVM flag means that QEMU is, by default, running
without KVM acceleration and in case we need KVM acceleration it
needs to be explicitly instructed to do so. This is partially
true for the past (this option essentially means that QEMU
recognizes the '-enable-kvm' option, even though it's almost the
same).
2012-10-31 07:31:49 +00:00
|
|
|
int qemuMonitorGetKVMState(qemuMonitorPtr mon,
|
|
|
|
|
bool *enabled,
|
|
|
|
|
bool *present);
|
|
|
|
|
|
2012-08-22 09:48:41 +00:00
|
|
|
int qemuMonitorGetObjectTypes(qemuMonitorPtr mon,
|
|
|
|
|
char ***types);
|
2012-08-22 09:48:41 +00:00
|
|
|
int qemuMonitorGetObjectProps(qemuMonitorPtr mon,
|
|
|
|
|
const char *type,
|
|
|
|
|
char ***props);
|
2012-08-22 09:48:41 +00:00
|
|
|
char *qemuMonitorGetTargetArch(qemuMonitorPtr mon);
|
2012-08-20 14:58:20 +00:00
|
|
|
|
2012-11-22 15:08:52 +00:00
|
|
|
int qemuMonitorNBDServerStart(qemuMonitorPtr mon,
|
|
|
|
|
const char *host,
|
|
|
|
|
unsigned int port);
|
2012-11-22 15:17:13 +00:00
|
|
|
int qemuMonitorNBDServerAdd(qemuMonitorPtr mon,
|
|
|
|
|
const char *deviceID,
|
|
|
|
|
bool writable);
|
2013-01-31 13:47:49 +00:00
|
|
|
int qemuMonitorNBDServerStop(qemuMonitorPtr);
|
2013-04-12 20:55:45 +00:00
|
|
|
int qemuMonitorGetTPMModels(qemuMonitorPtr mon,
|
|
|
|
|
char ***tpmmodels);
|
|
|
|
|
|
|
|
|
|
int qemuMonitorGetTPMTypes(qemuMonitorPtr mon,
|
|
|
|
|
char ***tpmtypes);
|
|
|
|
|
|
2013-03-12 18:48:04 +00:00
|
|
|
int qemuMonitorAttachCharDev(qemuMonitorPtr mon,
|
|
|
|
|
const char *chrID,
|
|
|
|
|
virDomainChrSourceDefPtr chr);
|
2013-03-12 18:57:48 +00:00
|
|
|
int qemuMonitorDetachCharDev(qemuMonitorPtr mon,
|
|
|
|
|
const char *chrID);
|
2013-07-19 13:01:38 +00:00
|
|
|
|
|
|
|
|
int qemuMonitorGetDeviceAliases(qemuMonitorPtr mon,
|
|
|
|
|
char ***aliases);
|
|
|
|
|
|
2013-09-18 14:12:17 +00:00
|
|
|
int qemuMonitorSetDomainLog(qemuMonitorPtr mon, int logfd);
|
|
|
|
|
|
2013-11-11 13:47:08 +00:00
|
|
|
int qemuMonitorGetGuestCPU(qemuMonitorPtr mon,
|
|
|
|
|
virArch arch,
|
|
|
|
|
virCPUDataPtr *data);
|
2013-07-22 11:07:23 +00:00
|
|
|
|
2010-10-22 23:26:08 +00:00
|
|
|
/**
|
|
|
|
|
* When running two dd process and using <> redirection, we need a
|
|
|
|
|
* shell that will not truncate files. These two strings serve that
|
|
|
|
|
* purpose.
|
|
|
|
|
*/
|
|
|
|
|
# ifdef VIR_WRAPPER_SHELL
|
|
|
|
|
# define VIR_WRAPPER_SHELL_PREFIX VIR_WRAPPER_SHELL " -c '"
|
|
|
|
|
# define VIR_WRAPPER_SHELL_SUFFIX "'"
|
|
|
|
|
# else
|
|
|
|
|
# define VIR_WRAPPER_SHELL_PREFIX /* nothing */
|
|
|
|
|
# define VIR_WRAPPER_SHELL_SUFFIX /* nothing */
|
|
|
|
|
# endif
|
|
|
|
|
|
2009-10-09 18:07:55 +00:00
|
|
|
#endif /* QEMU_MONITOR_H */
|
