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iostatus: reorganize io error code

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Move the common part of IDE/SCSI/virtio error handling to the block
layer.  The new function bdrv_error_action subsumes all three of
bdrv_emit_qmp_error_event, vm_stop, bdrv_iostatus_set_err.

The same scheme will be used for errors in block jobs.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2012-09-28 17:22:57 +02:00 • committed by Kevin Wolf
parent 1ceee0d5cc
commit 3e1caa5f76
6 changed files with 64 additions and 55 deletions
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23
hw/scsi-disk.c
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@ -388,21 +388,9 @@ static int scsi_handle_rw_error(SCSIDiskReq *r, int error)
{
bool is_read = (r->req.cmd.xfer == SCSI_XFER_FROM_DEV);
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
BlockdevOnError action = bdrv_get_on_error(s->qdev.conf.bs, is_read);
BlockErrorAction action = bdrv_get_error_action(s->qdev.conf.bs, is_read, error);
if (action == BLOCKDEV_ON_ERROR_IGNORE) {
bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_IGNORE, is_read);
return 0;
}
if ((error == ENOSPC && action == BLOCKDEV_ON_ERROR_ENOSPC)
|| action == BLOCKDEV_ON_ERROR_STOP) {
bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_STOP, is_read);
vm_stop(RUN_STATE_IO_ERROR);
bdrv_iostatus_set_err(s->qdev.conf.bs, error);
scsi_req_retry(&r->req);
} else {
if (action == BDRV_ACTION_REPORT) {
switch (error) {
case ENOMEDIUM:
scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
@ -417,9 +405,12 @@ static int scsi_handle_rw_error(SCSIDiskReq *r, int error)
scsi_check_condition(r, SENSE_CODE(IO_ERROR));
break;
}
bdrv_emit_qmp_error_event(s->qdev.conf.bs, BDRV_ACTION_REPORT, is_read);
}
return 1;
bdrv_error_action(s->qdev.conf.bs, action, is_read, error);
if (action == BDRV_ACTION_STOP) {
scsi_req_retry(&r->req);
}
return action != BDRV_ACTION_IGNORE;
}
static void scsi_write_complete(void * opaque, int ret)