* later. See the COPYING file in the top-level directory.
*/
-#include "blockdev.h"
+#include "sysemu/blockdev.h"
#include "hw/block-common.h"
-#include "monitor.h"
-#include "qerror.h"
-#include "qemu-option.h"
-#include "qemu-config.h"
-#include "qemu-objects.h"
-#include "sysemu.h"
-#include "block_int.h"
+#include "block/blockjob.h"
+#include "monitor/monitor.h"
+#include "qapi/qmp/qerror.h"
+#include "qemu/option.h"
+#include "qemu/config-file.h"
+#include "qapi/qmp/types.h"
+#include "sysemu/sysemu.h"
+#include "block/block_int.h"
#include "qmp-commands.h"
#include "trace.h"
-#include "arch_init.h"
+#include "sysemu/arch_init.h"
static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
qemu_bh_schedule(s->bh);
}
-static int parse_block_error_action(const char *buf, int is_read)
+static int parse_block_error_action(const char *buf, bool is_read)
{
if (!strcmp(buf, "ignore")) {
- return BLOCK_ERR_IGNORE;
+ return BLOCKDEV_ON_ERROR_IGNORE;
} else if (!is_read && !strcmp(buf, "enospc")) {
- return BLOCK_ERR_STOP_ENOSPC;
+ return BLOCKDEV_ON_ERROR_ENOSPC;
} else if (!strcmp(buf, "stop")) {
- return BLOCK_ERR_STOP_ANY;
+ return BLOCKDEV_ON_ERROR_STOP;
} else if (!strcmp(buf, "report")) {
- return BLOCK_ERR_REPORT;
+ return BLOCKDEV_ON_ERROR_REPORT;
} else {
error_report("'%s' invalid %s error action",
buf, is_read ? "read" : "write");
}
}
-static bool do_check_io_limits(BlockIOLimit *io_limits)
+static bool do_check_io_limits(BlockIOLimit *io_limits, Error **errp)
{
bool bps_flag;
bool iops_flag;
&& ((io_limits->iops[BLOCK_IO_LIMIT_READ] != 0)
|| (io_limits->iops[BLOCK_IO_LIMIT_WRITE] != 0));
if (bps_flag || iops_flag) {
+ error_setg(errp, "bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) "
+ "cannot be used at the same time");
+ return false;
+ }
+
+ if (io_limits->bps[BLOCK_IO_LIMIT_TOTAL] < 0 ||
+ io_limits->bps[BLOCK_IO_LIMIT_WRITE] < 0 ||
+ io_limits->bps[BLOCK_IO_LIMIT_READ] < 0 ||
+ io_limits->iops[BLOCK_IO_LIMIT_TOTAL] < 0 ||
+ io_limits->iops[BLOCK_IO_LIMIT_WRITE] < 0 ||
+ io_limits->iops[BLOCK_IO_LIMIT_READ] < 0) {
+ error_setg(errp, "bps and iops values must be 0 or greater");
return false;
}
return true;
}
-DriveInfo *drive_init(QemuOpts *opts, int default_to_scsi)
+DriveInfo *drive_init(QemuOpts *opts, BlockInterfaceType block_default_type)
{
const char *buf;
const char *file = NULL;
int snapshot = 0;
bool copy_on_read;
int ret;
+ Error *error = NULL;
translation = BIOS_ATA_TRANSLATION_AUTO;
media = MEDIA_DISK;
return NULL;
}
} else {
- type = default_to_scsi ? IF_SCSI : IF_IDE;
+ type = block_default_type;
}
max_devs = if_max_devs[type];
}
}
+ if ((buf = qemu_opt_get(opts, "discard")) != NULL) {
+ if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) {
+ error_report("invalid discard option");
+ return NULL;
+ }
+ }
+
bdrv_flags |= BDRV_O_CACHE_WB;
if ((buf = qemu_opt_get(opts, "cache")) != NULL) {
if (bdrv_parse_cache_flags(buf, &bdrv_flags) != 0) {
io_limits.iops[BLOCK_IO_LIMIT_WRITE] =
qemu_opt_get_number(opts, "iops_wr", 0);
- if (!do_check_io_limits(&io_limits)) {
- error_report("bps(iops) and bps_rd/bps_wr(iops_rd/iops_wr) "
- "cannot be used at the same time");
+ if (!do_check_io_limits(&io_limits, &error)) {
+ error_report("%s", error_get_pretty(error));
+ error_free(error);
return NULL;
}
- on_write_error = BLOCK_ERR_STOP_ENOSPC;
+ if (qemu_opt_get(opts, "boot") != NULL) {
+ fprintf(stderr, "qemu-kvm: boot=on|off is deprecated and will be "
+ "ignored. Future versions will reject this parameter. Please "
+ "update your scripts.\n");
+ }
+
+ on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
if ((buf = qemu_opt_get(opts, "werror")) != NULL) {
if (type != IF_IDE && type != IF_SCSI && type != IF_VIRTIO && type != IF_NONE) {
error_report("werror is not supported by this bus type");
}
}
- on_read_error = BLOCK_ERR_REPORT;
+ on_read_error = BLOCKDEV_ON_ERROR_REPORT;
if ((buf = qemu_opt_get(opts, "rerror")) != NULL) {
if (type != IF_IDE && type != IF_VIRTIO && type != IF_SCSI && type != IF_NONE) {
error_report("rerror is not supported by this bus type");
if_name[type], mediastr, unit_id);
}
dinfo->bdrv = bdrv_new(dinfo->id);
+ dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
+ dinfo->bdrv->read_only = ro;
dinfo->devaddr = devaddr;
dinfo->type = type;
dinfo->bus = bus_id;
break;
case IF_VIRTIO:
/* add virtio block device */
- opts = qemu_opts_create(qemu_find_opts("device"), NULL, 0, NULL);
+ opts = qemu_opts_create_nofail(qemu_find_opts("device"));
if (arch_type == QEMU_ARCH_S390X) {
qemu_opt_set(opts, "driver", "virtio-blk-s390");
} else {
ret = bdrv_open(dinfo->bdrv, file, bdrv_flags, drv);
if (ret < 0) {
- error_report("could not open disk image %s: %s",
- file, strerror(-ret));
+ if (ret == -EMEDIUMTYPE) {
+ error_report("could not open disk image %s: not in %s format",
+ file, drv->format_name);
+ } else {
+ error_report("could not open disk image %s: %s",
+ file, strerror(-ret));
+ }
goto err;
}
if (!strcmp(device, "all")) {
ret = bdrv_commit_all();
- if (ret == -EBUSY) {
- qerror_report(QERR_DEVICE_IN_USE, device);
- return;
- }
} else {
bs = bdrv_find(device);
if (!bs) {
- qerror_report(QERR_DEVICE_NOT_FOUND, device);
+ monitor_printf(mon, "Device '%s' not found\n", device);
return;
}
ret = bdrv_commit(bs);
- if (ret == -EBUSY) {
- qerror_report(QERR_DEVICE_IN_USE, device);
- return;
- }
+ }
+ if (ret < 0) {
+ monitor_printf(mon, "'commit' error for '%s': %s\n", device,
+ strerror(-ret));
}
}
int ret = 0;
BlockdevActionList *dev_entry = dev_list;
BlkTransactionStates *states, *next;
+ Error *local_err = NULL;
QSIMPLEQ_HEAD(snap_bdrv_states, BlkTransactionStates) snap_bdrv_states;
QSIMPLEQ_INIT(&snap_bdrv_states);
/* create new image w/backing file */
if (mode != NEW_IMAGE_MODE_EXISTING) {
- ret = bdrv_img_create(new_image_file, format,
- states->old_bs->filename,
- states->old_bs->drv->format_name,
- NULL, -1, flags);
- if (ret) {
- error_set(errp, QERR_OPEN_FILE_FAILED, new_image_file);
+ bdrv_img_create(new_image_file, format,
+ states->old_bs->filename,
+ states->old_bs->drv->format_name,
+ NULL, -1, flags, &local_err, false);
+ if (error_is_set(&local_err)) {
+ error_propagate(errp, local_err);
goto delete_and_fail;
}
}
QSIMPLEQ_FOREACH(states, &snap_bdrv_states, entry) {
/* This removes our old bs from the bdrv_states, and adds the new bs */
bdrv_append(states->new_bs, states->old_bs);
+ /* We don't need (or want) to use the transactional
+ * bdrv_reopen_multiple() across all the entries at once, because we
+ * don't want to abort all of them if one of them fails the reopen */
+ bdrv_reopen(states->new_bs, states->new_bs->open_flags & ~BDRV_O_RDWR,
+ NULL);
}
/* success */
QSIMPLEQ_FOREACH_SAFE(states, &snap_bdrv_states, entry, next) {
g_free(states);
}
- return;
}
io_limits.iops[BLOCK_IO_LIMIT_READ] = iops_rd;
io_limits.iops[BLOCK_IO_LIMIT_WRITE]= iops_wr;
- if (!do_check_io_limits(&io_limits)) {
- error_set(errp, QERR_INVALID_PARAMETER_COMBINATION);
+ if (!do_check_io_limits(&io_limits, errp)) {
return;
}
}
}
-static QObject *qobject_from_block_job(BlockJob *job)
-{
- return qobject_from_jsonf("{ 'type': %s,"
- "'device': %s,"
- "'len': %" PRId64 ","
- "'offset': %" PRId64 ","
- "'speed': %" PRId64 " }",
- job->job_type->job_type,
- bdrv_get_device_name(job->bs),
- job->len,
- job->offset,
- job->speed);
-}
-
-static void block_stream_cb(void *opaque, int ret)
+static void block_job_cb(void *opaque, int ret)
{
BlockDriverState *bs = opaque;
QObject *obj;
- trace_block_stream_cb(bs, bs->job, ret);
+ trace_block_job_cb(bs, bs->job, ret);
assert(bs->job);
obj = qobject_from_block_job(bs->job);
}
void qmp_block_stream(const char *device, bool has_base,
- const char *base, bool has_speed,
- int64_t speed, Error **errp)
+ const char *base, bool has_speed, int64_t speed,
+ bool has_on_error, BlockdevOnError on_error,
+ Error **errp)
{
BlockDriverState *bs;
BlockDriverState *base_bs = NULL;
Error *local_err = NULL;
+ if (!has_on_error) {
+ on_error = BLOCKDEV_ON_ERROR_REPORT;
+ }
+
bs = bdrv_find(device);
if (!bs) {
error_set(errp, QERR_DEVICE_NOT_FOUND, device);
}
stream_start(bs, base_bs, base, has_speed ? speed : 0,
- block_stream_cb, bs, &local_err);
+ on_error, block_job_cb, bs, &local_err);
if (error_is_set(&local_err)) {
error_propagate(errp, local_err);
return;
trace_qmp_block_stream(bs, bs->job);
}
+void qmp_block_commit(const char *device,
+ bool has_base, const char *base, const char *top,
+ bool has_speed, int64_t speed,
+ Error **errp)
+{
+ BlockDriverState *bs;
+ BlockDriverState *base_bs, *top_bs;
+ Error *local_err = NULL;
+ /* This will be part of the QMP command, if/when the
+ * BlockdevOnError change for blkmirror makes it in
+ */
+ BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT;
+
+ /* drain all i/o before commits */
+ bdrv_drain_all();
+
+ bs = bdrv_find(device);
+ if (!bs) {
+ error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ return;
+ }
+
+ /* default top_bs is the active layer */
+ top_bs = bs;
+
+ if (top) {
+ if (strcmp(bs->filename, top) != 0) {
+ top_bs = bdrv_find_backing_image(bs, top);
+ }
+ }
+
+ if (top_bs == NULL) {
+ error_setg(errp, "Top image file %s not found", top ? top : "NULL");
+ return;
+ }
+
+ if (has_base && base) {
+ base_bs = bdrv_find_backing_image(top_bs, base);
+ } else {
+ base_bs = bdrv_find_base(top_bs);
+ }
+
+ if (base_bs == NULL) {
+ error_set(errp, QERR_BASE_NOT_FOUND, base ? base : "NULL");
+ return;
+ }
+
+ commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs,
+ &local_err);
+ if (local_err != NULL) {
+ error_propagate(errp, local_err);
+ return;
+ }
+ /* Grab a reference so hotplug does not delete the BlockDriverState from
+ * underneath us.
+ */
+ drive_get_ref(drive_get_by_blockdev(bs));
+}
+
+#define DEFAULT_MIRROR_BUF_SIZE (10 << 20)
+
+void qmp_drive_mirror(const char *device, const char *target,
+ bool has_format, const char *format,
+ enum MirrorSyncMode sync,
+ bool has_mode, enum NewImageMode mode,
+ bool has_speed, int64_t speed,
+ bool has_granularity, uint32_t granularity,
+ bool has_buf_size, int64_t buf_size,
+ bool has_on_source_error, BlockdevOnError on_source_error,
+ bool has_on_target_error, BlockdevOnError on_target_error,
+ Error **errp)
+{
+ BlockDriverState *bs;
+ BlockDriverState *source, *target_bs;
+ BlockDriver *proto_drv;
+ BlockDriver *drv = NULL;
+ Error *local_err = NULL;
+ int flags;
+ uint64_t size;
+ int ret;
+
+ if (!has_speed) {
+ speed = 0;
+ }
+ if (!has_on_source_error) {
+ on_source_error = BLOCKDEV_ON_ERROR_REPORT;
+ }
+ if (!has_on_target_error) {
+ on_target_error = BLOCKDEV_ON_ERROR_REPORT;
+ }
+ if (!has_mode) {
+ mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
+ }
+ if (!has_granularity) {
+ granularity = 0;
+ }
+ if (!has_buf_size) {
+ buf_size = DEFAULT_MIRROR_BUF_SIZE;
+ }
+
+ if (granularity != 0 && (granularity < 512 || granularity > 1048576 * 64)) {
+ error_set(errp, QERR_INVALID_PARAMETER, device);
+ return;
+ }
+ if (granularity & (granularity - 1)) {
+ error_set(errp, QERR_INVALID_PARAMETER, device);
+ return;
+ }
+
+ bs = bdrv_find(device);
+ if (!bs) {
+ error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ return;
+ }
+
+ if (!bdrv_is_inserted(bs)) {
+ error_set(errp, QERR_DEVICE_HAS_NO_MEDIUM, device);
+ return;
+ }
+
+ if (!has_format) {
+ format = mode == NEW_IMAGE_MODE_EXISTING ? NULL : bs->drv->format_name;
+ }
+ if (format) {
+ drv = bdrv_find_format(format);
+ if (!drv) {
+ error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
+ return;
+ }
+ }
+
+ if (bdrv_in_use(bs)) {
+ error_set(errp, QERR_DEVICE_IN_USE, device);
+ return;
+ }
+
+ flags = bs->open_flags | BDRV_O_RDWR;
+ source = bs->backing_hd;
+ if (!source && sync == MIRROR_SYNC_MODE_TOP) {
+ sync = MIRROR_SYNC_MODE_FULL;
+ }
+
+ proto_drv = bdrv_find_protocol(target);
+ if (!proto_drv) {
+ error_set(errp, QERR_INVALID_BLOCK_FORMAT, format);
+ return;
+ }
+
+ bdrv_get_geometry(bs, &size);
+ size *= 512;
+ if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) {
+ /* create new image w/o backing file */
+ assert(format && drv);
+ bdrv_img_create(target, format,
+ NULL, NULL, NULL, size, flags, &local_err, false);
+ } else {
+ switch (mode) {
+ case NEW_IMAGE_MODE_EXISTING:
+ ret = 0;
+ break;
+ case NEW_IMAGE_MODE_ABSOLUTE_PATHS:
+ /* create new image with backing file */
+ bdrv_img_create(target, format,
+ source->filename,
+ source->drv->format_name,
+ NULL, size, flags, &local_err, false);
+ break;
+ default:
+ abort();
+ }
+ }
+
+ if (error_is_set(&local_err)) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ /* Mirroring takes care of copy-on-write using the source's backing
+ * file.
+ */
+ target_bs = bdrv_new("");
+ ret = bdrv_open(target_bs, target, flags | BDRV_O_NO_BACKING, drv);
+
+ if (ret < 0) {
+ bdrv_delete(target_bs);
+ error_set(errp, QERR_OPEN_FILE_FAILED, target);
+ return;
+ }
+
+ mirror_start(bs, target_bs, speed, granularity, buf_size, sync,
+ on_source_error, on_target_error,
+ block_job_cb, bs, &local_err);
+ if (local_err != NULL) {
+ bdrv_delete(target_bs);
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ /* Grab a reference so hotplug does not delete the BlockDriverState from
+ * underneath us.
+ */
+ drive_get_ref(drive_get_by_blockdev(bs));
+}
+
static BlockJob *find_block_job(const char *device)
{
BlockDriverState *bs;
BlockJob *job = find_block_job(device);
if (!job) {
- error_set(errp, QERR_DEVICE_NOT_ACTIVE, device);
+ error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
return;
}
block_job_set_speed(job, speed, errp);
}
-void qmp_block_job_cancel(const char *device, Error **errp)
+void qmp_block_job_cancel(const char *device,
+ bool has_force, bool force, Error **errp)
{
BlockJob *job = find_block_job(device);
+ if (!has_force) {
+ force = false;
+ }
+
if (!job) {
- error_set(errp, QERR_DEVICE_NOT_ACTIVE, device);
+ error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
+ return;
+ }
+ if (job->paused && !force) {
+ error_set(errp, QERR_BLOCK_JOB_PAUSED, device);
return;
}
block_job_cancel(job);
}
+void qmp_block_job_pause(const char *device, Error **errp)
+{
+ BlockJob *job = find_block_job(device);
+
+ if (!job) {
+ error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
+ return;
+ }
+
+ trace_qmp_block_job_pause(job);
+ block_job_pause(job);
+}
+
+void qmp_block_job_resume(const char *device, Error **errp)
+{
+ BlockJob *job = find_block_job(device);
+
+ if (!job) {
+ error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
+ return;
+ }
+
+ trace_qmp_block_job_resume(job);
+ block_job_resume(job);
+}
+
+void qmp_block_job_complete(const char *device, Error **errp)
+{
+ BlockJob *job = find_block_job(device);
+
+ if (!job) {
+ error_set(errp, QERR_BLOCK_JOB_NOT_ACTIVE, device);
+ return;
+ }
+
+ trace_qmp_block_job_complete(job);
+ block_job_complete(job, errp);
+}
+
static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs)
{
BlockJobInfoList **prev = opaque;
BlockJob *job = bs->job;
if (job) {
- BlockJobInfoList *elem;
- BlockJobInfo *info = g_new(BlockJobInfo, 1);
- *info = (BlockJobInfo){
- .type = g_strdup(job->job_type->job_type),
- .device = g_strdup(bdrv_get_device_name(bs)),
- .len = job->len,
- .offset = job->offset,
- .speed = job->speed,
- };
-
- elem = g_new0(BlockJobInfoList, 1);
- elem->value = info;
-
+ BlockJobInfoList *elem = g_new0(BlockJobInfoList, 1);
+ elem->value = block_job_query(bs->job);
(*prev)->next = elem;
*prev = elem;
}
bdrv_iterate(do_qmp_query_block_jobs_one, &prev);
return dummy.next;
}
+
+QemuOptsList qemu_drive_opts = {
+ .name = "drive",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_drive_opts.head),
+ .desc = {
+ {
+ .name = "bus",
+ .type = QEMU_OPT_NUMBER,
+ .help = "bus number",
+ },{
+ .name = "unit",
+ .type = QEMU_OPT_NUMBER,
+ .help = "unit number (i.e. lun for scsi)",
+ },{
+ .name = "if",
+ .type = QEMU_OPT_STRING,
+ .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
+ },{
+ .name = "index",
+ .type = QEMU_OPT_NUMBER,
+ .help = "index number",
+ },{
+ .name = "cyls",
+ .type = QEMU_OPT_NUMBER,
+ .help = "number of cylinders (ide disk geometry)",
+ },{
+ .name = "heads",
+ .type = QEMU_OPT_NUMBER,
+ .help = "number of heads (ide disk geometry)",
+ },{
+ .name = "secs",
+ .type = QEMU_OPT_NUMBER,
+ .help = "number of sectors (ide disk geometry)",
+ },{
+ .name = "trans",
+ .type = QEMU_OPT_STRING,
+ .help = "chs translation (auto, lba. none)",
+ },{
+ .name = "media",
+ .type = QEMU_OPT_STRING,
+ .help = "media type (disk, cdrom)",
+ },{
+ .name = "snapshot",
+ .type = QEMU_OPT_BOOL,
+ .help = "enable/disable snapshot mode",
+ },{
+ .name = "file",
+ .type = QEMU_OPT_STRING,
+ .help = "disk image",
+ },{
+ .name = "discard",
+ .type = QEMU_OPT_STRING,
+ .help = "discard operation (ignore/off, unmap/on)",
+ },{
+ .name = "cache",
+ .type = QEMU_OPT_STRING,
+ .help = "host cache usage (none, writeback, writethrough, "
+ "directsync, unsafe)",
+ },{
+ .name = "aio",
+ .type = QEMU_OPT_STRING,
+ .help = "host AIO implementation (threads, native)",
+ },{
+ .name = "format",
+ .type = QEMU_OPT_STRING,
+ .help = "disk format (raw, qcow2, ...)",
+ },{
+ .name = "serial",
+ .type = QEMU_OPT_STRING,
+ .help = "disk serial number",
+ },{
+ .name = "rerror",
+ .type = QEMU_OPT_STRING,
+ .help = "read error action",
+ },{
+ .name = "werror",
+ .type = QEMU_OPT_STRING,
+ .help = "write error action",
+ },{
+ .name = "addr",
+ .type = QEMU_OPT_STRING,
+ .help = "pci address (virtio only)",
+ },{
+ .name = "readonly",
+ .type = QEMU_OPT_BOOL,
+ .help = "open drive file as read-only",
+ },{
+ .name = "iops",
+ .type = QEMU_OPT_NUMBER,
+ .help = "limit total I/O operations per second",
+ },{
+ .name = "iops_rd",
+ .type = QEMU_OPT_NUMBER,
+ .help = "limit read operations per second",
+ },{
+ .name = "iops_wr",
+ .type = QEMU_OPT_NUMBER,
+ .help = "limit write operations per second",
+ },{
+ .name = "bps",
+ .type = QEMU_OPT_NUMBER,
+ .help = "limit total bytes per second",
+ },{
+ .name = "bps_rd",
+ .type = QEMU_OPT_NUMBER,
+ .help = "limit read bytes per second",
+ },{
+ .name = "bps_wr",
+ .type = QEMU_OPT_NUMBER,
+ .help = "limit write bytes per second",
+ },{
+ .name = "copy-on-read",
+ .type = QEMU_OPT_BOOL,
+ .help = "copy read data from backing file into image file",
+ },{
+ .name = "boot",
+ .type = QEMU_OPT_BOOL,
+ .help = "(deprecated, ignored)",
+ },
+ { /* end of list */ }
+ },
+};
projects / qemu.git / blobdiff