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aefaeb3d48
Currently libvirt doesn't confirm whether the guest has responded to the disk removal request. In some cases this can leave the guest with continued access to the device while the mgmt layer believes that it has been removed. With a recent qemu monitor command[1] we can deterministically revoke a guests access to the disk (on the QEMU side) to ensure no futher access is permitted. This patch adds support for the drive_del() command and introduces it in the disk removal paths. If the guest is running in a QEMU without this command we currently explicitly check for unknown command/CommandNotFound and log the issue. If QEMU supports the command we issue the drive_del command after we attempt to remove the device. The guest may respond and remove the block device before we get to attempt to call drive_del. In that case, we explicitly check for 'Device not found' from the monitor indicating that the target drive was auto-deleted upon guest responds to the device removal notification. 1. http://thread.gmane.org/gmane.comp.emulators.qemu/84745 Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
208 lines
8.4 KiB
C
208 lines
8.4 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 qemuMonitorJSONGetBlockExtent(qemuMonitorPtr mon,
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const char *devname,
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unsigned long long *extent);
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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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bool force);
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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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unsigned int flags,
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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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unsigned int flags,
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const char * const *argv);
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int qemuMonitorJSONMigrateToFile(qemuMonitorPtr mon,
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unsigned int flags,
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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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unsigned int flags,
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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 qemuMonitorJSONAddNetdev(qemuMonitorPtr mon,
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const char *netdevstr);
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int qemuMonitorJSONRemoveNetdev(qemuMonitorPtr mon,
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const char *alias);
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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 qemuMonitorJSONDriveDel(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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int qemuMonitorJSONArbitraryCommand(qemuMonitorPtr mon,
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const char *cmd_str,
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char **reply_str);
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#endif /* QEMU_MONITOR_JSON_H */
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