32c81a4a6e
The following behaviors are possible: 'report': The behavior is the same as in 1.1. An I/O error, respectively during a read or a write, will complete the job immediately with an error code. 'ignore': An I/O error, respectively during a read or a write, will be ignored. For streaming, the job will complete with an error and the backing file will be left in place. For mirroring, the sector will be marked again as dirty and re-examined later. 'stop': The job will be paused and the job iostatus will be set to failed or nospace, while the VM will keep running. This can only be specified if the block device has rerror=stop and werror=stop or enospc. 'enospc': Behaves as 'stop' for ENOSPC errors, 'report' for others. In all cases, even for 'report', the I/O error is reported as a QMP event BLOCK_JOB_ERROR, with the same arguments as BLOCK_IO_ERROR. It is possible that while stopping the VM a BLOCK_IO_ERROR event will be reported and will clobber the event from BLOCK_JOB_ERROR, or vice versa. This is not really avoidable since stopping the VM completes all pending I/O requests. In fact, it is already possible now that a series of BLOCK_IO_ERROR events are reported with rerror=stop, because vm_stop calls bdrv_drain_all and this can generate further errors. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
99 lines
2.9 KiB
C
99 lines
2.9 KiB
C
#ifndef MONITOR_H
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#define MONITOR_H
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#include "qemu-common.h"
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#include "qemu-char.h"
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#include "qerror.h"
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#include "qdict.h"
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#include "block.h"
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#include "readline.h"
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extern Monitor *cur_mon;
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extern Monitor *default_mon;
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/* flags for monitor_init */
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#define MONITOR_IS_DEFAULT 0x01
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#define MONITOR_USE_READLINE 0x02
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#define MONITOR_USE_CONTROL 0x04
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#define MONITOR_USE_PRETTY 0x08
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/* flags for monitor commands */
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#define MONITOR_CMD_ASYNC 0x0001
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/* QMP events */
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typedef enum MonitorEvent {
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QEVENT_SHUTDOWN,
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QEVENT_RESET,
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QEVENT_POWERDOWN,
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QEVENT_STOP,
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QEVENT_RESUME,
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QEVENT_VNC_CONNECTED,
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QEVENT_VNC_INITIALIZED,
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QEVENT_VNC_DISCONNECTED,
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QEVENT_BLOCK_IO_ERROR,
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QEVENT_RTC_CHANGE,
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QEVENT_WATCHDOG,
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QEVENT_SPICE_CONNECTED,
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QEVENT_SPICE_INITIALIZED,
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QEVENT_SPICE_DISCONNECTED,
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QEVENT_BLOCK_JOB_COMPLETED,
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QEVENT_BLOCK_JOB_CANCELLED,
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QEVENT_BLOCK_JOB_ERROR,
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QEVENT_DEVICE_TRAY_MOVED,
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QEVENT_SUSPEND,
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QEVENT_SUSPEND_DISK,
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QEVENT_WAKEUP,
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QEVENT_BALLOON_CHANGE,
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QEVENT_SPICE_MIGRATE_COMPLETED,
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/* Add to 'monitor_event_names' array in monitor.c when
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* defining new events here */
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QEVENT_MAX,
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} MonitorEvent;
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int monitor_cur_is_qmp(void);
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void monitor_protocol_event(MonitorEvent event, QObject *data);
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void monitor_init(CharDriverState *chr, int flags);
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int monitor_suspend(Monitor *mon);
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void monitor_resume(Monitor *mon);
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int monitor_read_bdrv_key_start(Monitor *mon, BlockDriverState *bs,
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BlockDriverCompletionFunc *completion_cb,
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void *opaque);
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int monitor_read_block_device_key(Monitor *mon, const char *device,
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BlockDriverCompletionFunc *completion_cb,
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void *opaque);
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int monitor_get_fd(Monitor *mon, const char *fdname);
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int monitor_handle_fd_param(Monitor *mon, const char *fdname);
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void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
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GCC_FMT_ATTR(2, 0);
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void monitor_printf(Monitor *mon, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
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void monitor_print_filename(Monitor *mon, const char *filename);
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void monitor_flush(Monitor *mon);
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int monitor_set_cpu(int cpu_index);
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int monitor_get_cpu_index(void);
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typedef void (MonitorCompletion)(void *opaque, QObject *ret_data);
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void monitor_set_error(Monitor *mon, QError *qerror);
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void monitor_read_command(Monitor *mon, int show_prompt);
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ReadLineState *monitor_get_rs(Monitor *mon);
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int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
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void *opaque);
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int qmp_qom_set(Monitor *mon, const QDict *qdict, QObject **ret);
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int qmp_qom_get(Monitor *mon, const QDict *qdict, QObject **ret);
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int monitor_fdset_get_fd(int64_t fdset_id, int flags);
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int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd);
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int monitor_fdset_dup_fd_remove(int dup_fd);
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int monitor_fdset_dup_fd_find(int dup_fd);
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#endif /* !MONITOR_H */
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