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93e0b3c8d6
The save process was relying on use of the shell >> append operator to ensure the save data was placed after the libvirt header + XML. This doesn't work for block devices though. Replace this code with use of 'dd' and its 'seek' parameter. This means that we need to pad the header + XML out to a multiple of dd block size (in this case we choose 512). The qemuMonitorMigateToCommand() monitor API is used for both save/coredump, and migration via UNIX socket. We can't simply switch this to use 'dd' since this causes problems with the migration usage. Thus, create a dedicated qemuMonitorMigateToFile which can accept an filename + offset, and remove the filename from the current qemuMonitorMigateToCommand() API * src/qemu/qemu_driver.c: Switch to qemuMonitorMigateToFile for save and core dump * 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: Create a new qemuMonitorMigateToFile, separate from the existing qemuMonitorMigateToCommand to allow handling file offsets
191 lines
7.7 KiB
C
191 lines
7.7 KiB
C
/*
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* qemu_monitor_json.h: interaction with QEMU monitor console
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*
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* Copyright (C) 2006-2009 Red Hat, Inc.
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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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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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_JSON_H
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# define QEMU_MONITOR_JSON_H
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# include "internal.h"
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# include "qemu_monitor.h"
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int qemuMonitorJSONIOProcess(qemuMonitorPtr mon,
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const char *data,
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size_t len,
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qemuMonitorMessagePtr msg);
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int qemuMonitorJSONSetCapabilities(qemuMonitorPtr mon);
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int qemuMonitorJSONStartCPUs(qemuMonitorPtr mon,
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virConnectPtr conn);
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int qemuMonitorJSONStopCPUs(qemuMonitorPtr mon);
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int qemuMonitorJSONSystemPowerdown(qemuMonitorPtr mon);
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int qemuMonitorJSONGetCPUInfo(qemuMonitorPtr mon,
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int **pids);
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int qemuMonitorJSONGetBalloonInfo(qemuMonitorPtr mon,
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unsigned long *currmem);
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int qemuMonitorJSONGetMemoryStats(qemuMonitorPtr mon,
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virDomainMemoryStatPtr stats,
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unsigned int nr_stats);
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int qemuMonitorJSONGetBlockStatsInfo(qemuMonitorPtr mon,
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const char *devname,
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long long *rd_req,
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long long *rd_bytes,
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long long *wr_req,
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long long *wr_bytes,
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long long *errs);
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int qemuMonitorJSONSetVNCPassword(qemuMonitorPtr mon,
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const char *password);
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int qemuMonitorJSONSetBalloon(qemuMonitorPtr mon,
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unsigned long newmem);
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int qemuMonitorJSONSetCPU(qemuMonitorPtr mon, int cpu, int online);
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int qemuMonitorJSONEjectMedia(qemuMonitorPtr mon,
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const char *devname);
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int qemuMonitorJSONChangeMedia(qemuMonitorPtr mon,
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const char *devname,
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const char *newmedia,
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const char *format);
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int qemuMonitorJSONSaveVirtualMemory(qemuMonitorPtr mon,
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unsigned long long offset,
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size_t length,
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const char *path);
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int qemuMonitorJSONSavePhysicalMemory(qemuMonitorPtr mon,
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unsigned long long offset,
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size_t length,
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const char *path);
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int qemuMonitorJSONSetMigrationSpeed(qemuMonitorPtr mon,
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unsigned long bandwidth);
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int qemuMonitorJSONSetMigrationDowntime(qemuMonitorPtr mon,
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unsigned long long downtime);
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int qemuMonitorJSONGetMigrationStatus(qemuMonitorPtr mon,
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int *status,
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unsigned long long *transferred,
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unsigned long long *remaining,
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unsigned long long *total);
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int qemuMonitorJSONMigrateToHost(qemuMonitorPtr mon,
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int background,
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const char *hostname,
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int port);
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int qemuMonitorJSONMigrateToCommand(qemuMonitorPtr mon,
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int background,
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const char * const *argv);
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int qemuMonitorJSONMigrateToFile(qemuMonitorPtr mon,
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int background,
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const char * const *argv,
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const char *target,
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unsigned long long offset);
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int qemuMonitorJSONMigrateToUnix(qemuMonitorPtr mon,
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int background,
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const char *unixfile);
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int qemuMonitorJSONMigrateCancel(qemuMonitorPtr mon);
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int qemuMonitorJSONAddUSBDisk(qemuMonitorPtr mon,
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const char *path);
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int qemuMonitorJSONAddUSBDeviceExact(qemuMonitorPtr mon,
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int bus,
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int dev);
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int qemuMonitorJSONAddUSBDeviceMatch(qemuMonitorPtr mon,
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int vendor,
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int product);
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int qemuMonitorJSONAddPCIHostDevice(qemuMonitorPtr mon,
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virDomainDevicePCIAddress *hostAddr,
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virDomainDevicePCIAddress *guestAddr);
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int qemuMonitorJSONAddPCIDisk(qemuMonitorPtr mon,
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const char *path,
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const char *bus,
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virDomainDevicePCIAddress *guestAddr);
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int qemuMonitorJSONAddPCINetwork(qemuMonitorPtr mon,
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const char *nicstr,
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virDomainDevicePCIAddress *guestAddr);
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int qemuMonitorJSONRemovePCIDevice(qemuMonitorPtr mon,
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virDomainDevicePCIAddress *guestAddr);
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int qemuMonitorJSONSendFileHandle(qemuMonitorPtr mon,
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const char *fdname,
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int fd);
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int qemuMonitorJSONCloseFileHandle(qemuMonitorPtr mon,
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const char *fdname);
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int qemuMonitorJSONAddHostNetwork(qemuMonitorPtr mon,
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const char *netstr);
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int qemuMonitorJSONRemoveHostNetwork(qemuMonitorPtr mon,
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int vlan,
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const char *netname);
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int qemuMonitorJSONGetPtyPaths(qemuMonitorPtr mon,
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virHashTablePtr paths);
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int qemuMonitorJSONAttachPCIDiskController(qemuMonitorPtr mon,
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const char *bus,
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virDomainDevicePCIAddress *guestAddr);
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int qemuMonitorJSONAttachDrive(qemuMonitorPtr mon,
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const char *drivestr,
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virDomainDevicePCIAddress *controllerAddr,
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virDomainDeviceDriveAddress *driveAddr);
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int qemuMonitorJSONGetAllPCIAddresses(qemuMonitorPtr mon,
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qemuMonitorPCIAddress **addrs);
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int qemuMonitorJSONAddDevice(qemuMonitorPtr mon,
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const char *devicestr);
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int qemuMonitorJSONDelDevice(qemuMonitorPtr mon,
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const char *devalias);
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int qemuMonitorJSONAddDrive(qemuMonitorPtr mon,
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const char *drivestr);
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int qemuMonitorJSONSetDrivePassphrase(qemuMonitorPtr mon,
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const char *alias,
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const char *passphrase);
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int qemuMonitorJSONCreateSnapshot(qemuMonitorPtr mon, const char *name);
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int qemuMonitorJSONLoadSnapshot(qemuMonitorPtr mon, const char *name);
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int qemuMonitorJSONDeleteSnapshot(qemuMonitorPtr mon, const char *name);
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#endif /* QEMU_MONITOR_JSON_H */
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