#include "hw/block/block.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 "qapi-visit.h"
+#include "qapi/qmp-output-visitor.h"
#include "sysemu/sysemu.h"
#include "block/block_int.h"
#include "qmp-commands.h"
#include "sysemu/arch_init.h"
static QTAILQ_HEAD(drivelist, DriveInfo) drives = QTAILQ_HEAD_INITIALIZER(drives);
-extern QemuOptsList qemu_common_drive_opts;
static const char *const if_name[IF_COUNT] = {
[IF_NONE] = "none",
{
DriveInfo *dinfo = drive_get_by_blockdev(bs);
+ if (dinfo && !dinfo->enable_auto_del) {
+ return;
+ }
+
if (bs->job) {
block_job_cancel(bs->job);
}
DriveInfo *dinfo = drive_get_by_blockdev(bs);
if (dinfo && dinfo->auto_del) {
- drive_put_ref(dinfo);
+ drive_del(dinfo);
}
}
error_printf(" %s", name);
}
-static void drive_uninit(DriveInfo *dinfo)
+void drive_del(DriveInfo *dinfo)
{
- qemu_opts_del(dinfo->opts);
+ if (dinfo->opts) {
+ qemu_opts_del(dinfo->opts);
+ }
+
bdrv_unref(dinfo->bdrv);
g_free(dinfo->id);
QTAILQ_REMOVE(&drives, dinfo, next);
g_free(dinfo);
}
-void drive_put_ref(DriveInfo *dinfo)
-{
- assert(dinfo->refcount);
- if (--dinfo->refcount == 0) {
- drive_uninit(dinfo);
- }
-}
-
-void drive_get_ref(DriveInfo *dinfo)
-{
- dinfo->refcount++;
-}
-
typedef struct {
QEMUBH *bh;
BlockDriverState *bs;
qemu_bh_schedule(s->bh);
}
-static int parse_block_error_action(const char *buf, bool is_read)
+static int parse_block_error_action(const char *buf, bool is_read, Error **errp)
{
if (!strcmp(buf, "ignore")) {
return BLOCKDEV_ON_ERROR_IGNORE;
} else if (!strcmp(buf, "report")) {
return BLOCKDEV_ON_ERROR_REPORT;
} else {
- error_report("'%s' invalid %s error action",
- buf, is_read ? "read" : "write");
+ error_setg(errp, "'%s' invalid %s error action",
+ buf, is_read ? "read" : "write");
return -1;
}
}
+static inline int parse_enum_option(const char *lookup[], const char *buf,
+ int max, int def, Error **errp)
+{
+ int i;
+
+ if (!buf) {
+ return def;
+ }
+
+ for (i = 0; i < max; i++) {
+ if (!strcmp(buf, lookup[i])) {
+ return i;
+ }
+ }
+
+ error_setg(errp, "invalid parameter value: %s", buf);
+ return def;
+}
+
static bool check_throttle_config(ThrottleConfig *cfg, Error **errp)
{
if (throttle_conflicting(cfg)) {
return true;
}
-static DriveInfo *blockdev_init(QemuOpts *all_opts,
- BlockInterfaceType block_default_type)
+typedef enum { MEDIA_DISK, MEDIA_CDROM } DriveMediaType;
+
+/* Takes the ownership of bs_opts */
+static DriveInfo *blockdev_init(const char *file, QDict *bs_opts,
+ Error **errp)
{
const char *buf;
- const char *file = NULL;
- const char *serial;
- const char *mediastr = "";
- BlockInterfaceType type;
- enum { MEDIA_DISK, MEDIA_CDROM } media;
- int bus_id, unit_id;
- int cyls, heads, secs, translation;
- int max_devs;
- int index;
int ro = 0;
int bdrv_flags = 0;
int on_read_error, on_write_error;
- const char *devaddr;
DriveInfo *dinfo;
ThrottleConfig cfg;
int snapshot = 0;
int ret;
Error *error = NULL;
QemuOpts *opts;
- QDict *bs_opts;
const char *id;
bool has_driver_specific_opts;
+ BlockdevDetectZeroesOptions detect_zeroes;
BlockDriver *drv = NULL;
- translation = BIOS_ATA_TRANSLATION_AUTO;
- media = MEDIA_DISK;
-
- /* Check common options by copying from all_opts to opts, all other options
- * are stored in bs_opts. */
- id = qemu_opts_id(all_opts);
+ /* Check common options by copying from bs_opts to opts, all other options
+ * stay in bs_opts for processing by bdrv_open(). */
+ id = qdict_get_try_str(bs_opts, "id");
opts = qemu_opts_create(&qemu_common_drive_opts, id, 1, &error);
- if (error_is_set(&error)) {
- qerror_report_err(error);
- error_free(error);
- return NULL;
+ if (error) {
+ error_propagate(errp, error);
+ goto err_no_opts;
}
- bs_opts = qdict_new();
- qemu_opts_to_qdict(all_opts, bs_opts);
qemu_opts_absorb_qdict(opts, bs_opts, &error);
- if (error_is_set(&error)) {
- qerror_report_err(error);
- error_free(error);
- return NULL;
+ if (error) {
+ error_propagate(errp, error);
+ goto early_err;
}
if (id) {
has_driver_specific_opts = !!qdict_size(bs_opts);
/* extract parameters */
- bus_id = qemu_opt_get_number(opts, "bus", 0);
- unit_id = qemu_opt_get_number(opts, "unit", -1);
- index = qemu_opt_get_number(opts, "index", -1);
-
- cyls = qemu_opt_get_number(opts, "cyls", 0);
- heads = qemu_opt_get_number(opts, "heads", 0);
- secs = qemu_opt_get_number(opts, "secs", 0);
-
snapshot = qemu_opt_get_bool(opts, "snapshot", 0);
ro = qemu_opt_get_bool(opts, "read-only", 0);
copy_on_read = qemu_opt_get_bool(opts, "copy-on-read", false);
- file = qemu_opt_get(opts, "file");
- serial = qemu_opt_get(opts, "serial");
-
- if ((buf = qemu_opt_get(opts, "if")) != NULL) {
- for (type = 0; type < IF_COUNT && strcmp(buf, if_name[type]); type++)
- ;
- if (type == IF_COUNT) {
- error_report("unsupported bus type '%s'", buf);
- return NULL;
- }
- } else {
- type = block_default_type;
- }
-
- max_devs = if_max_devs[type];
-
- if (cyls || heads || secs) {
- if (cyls < 1) {
- error_report("invalid physical cyls number");
- return NULL;
- }
- if (heads < 1) {
- error_report("invalid physical heads number");
- return NULL;
- }
- if (secs < 1) {
- error_report("invalid physical secs number");
- return NULL;
- }
- }
-
- if ((buf = qemu_opt_get(opts, "trans")) != NULL) {
- if (!cyls) {
- error_report("'%s' trans must be used with cyls, heads and secs",
- buf);
- return NULL;
- }
- if (!strcmp(buf, "none"))
- translation = BIOS_ATA_TRANSLATION_NONE;
- else if (!strcmp(buf, "lba"))
- translation = BIOS_ATA_TRANSLATION_LBA;
- else if (!strcmp(buf, "auto"))
- translation = BIOS_ATA_TRANSLATION_AUTO;
- else {
- error_report("'%s' invalid translation type", buf);
- return NULL;
- }
- }
-
- if ((buf = qemu_opt_get(opts, "media")) != NULL) {
- if (!strcmp(buf, "disk")) {
- media = MEDIA_DISK;
- } else if (!strcmp(buf, "cdrom")) {
- if (cyls || secs || heads) {
- error_report("CHS can't be set with media=%s", buf);
- return NULL;
- }
- media = MEDIA_CDROM;
- } else {
- error_report("'%s' invalid media", buf);
- return NULL;
- }
- }
-
if ((buf = qemu_opt_get(opts, "discard")) != NULL) {
if (bdrv_parse_discard_flags(buf, &bdrv_flags) != 0) {
- error_report("invalid discard option");
- return NULL;
+ error_setg(errp, "invalid discard option");
+ goto early_err;
}
}
if (qemu_opt_get_bool(opts, "cache.direct", false)) {
bdrv_flags |= BDRV_O_NOCACHE;
}
- if (qemu_opt_get_bool(opts, "cache.no-flush", true)) {
+ if (qemu_opt_get_bool(opts, "cache.no-flush", false)) {
bdrv_flags |= BDRV_O_NO_FLUSH;
}
} else if (!strcmp(buf, "threads")) {
/* this is the default */
} else {
- error_report("invalid aio option");
- return NULL;
+ error_setg(errp, "invalid aio option");
+ goto early_err;
}
}
#endif
error_printf("Supported formats:");
bdrv_iterate_format(bdrv_format_print, NULL);
error_printf("\n");
- return NULL;
+ goto early_err;
}
- drv = bdrv_find_whitelisted_format(buf, ro);
+ drv = bdrv_find_format(buf);
if (!drv) {
- if (!ro && bdrv_find_whitelisted_format(buf, !ro)) {
- error_report("'%s' can be only used as read-only device.", buf);
- } else {
- error_report("'%s' invalid format", buf);
- }
- return NULL;
+ error_setg(errp, "'%s' invalid format", buf);
+ goto early_err;
}
}
cfg.op_size = qemu_opt_get_number(opts, "throttling.iops-size", 0);
if (!check_throttle_config(&cfg, &error)) {
- error_report("%s", error_get_pretty(error));
- error_free(error);
- return NULL;
- }
-
- 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");
+ error_propagate(errp, error);
+ goto early_err;
}
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");
- return NULL;
- }
-
- on_write_error = parse_block_error_action(buf, 0);
- if (on_write_error < 0) {
- return NULL;
+ on_write_error = parse_block_error_action(buf, 0, &error);
+ if (error) {
+ error_propagate(errp, error);
+ goto early_err;
}
}
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");
- return NULL;
- }
-
- on_read_error = parse_block_error_action(buf, 1);
- if (on_read_error < 0) {
- return NULL;
+ on_read_error = parse_block_error_action(buf, 1, &error);
+ if (error) {
+ error_propagate(errp, error);
+ goto early_err;
}
}
- if ((devaddr = qemu_opt_get(opts, "addr")) != NULL) {
- if (type != IF_VIRTIO) {
- error_report("addr is not supported by this bus type");
- return NULL;
- }
+ detect_zeroes =
+ parse_enum_option(BlockdevDetectZeroesOptions_lookup,
+ qemu_opt_get(opts, "detect-zeroes"),
+ BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX,
+ BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF,
+ &error);
+ if (error) {
+ error_propagate(errp, error);
+ goto early_err;
}
- /* compute bus and unit according index */
-
- if (index != -1) {
- if (bus_id != 0 || unit_id != -1) {
- error_report("index cannot be used with bus and unit");
- return NULL;
- }
- bus_id = drive_index_to_bus_id(type, index);
- unit_id = drive_index_to_unit_id(type, index);
- }
-
- /* if user doesn't specify a unit_id,
- * try to find the first free
- */
-
- if (unit_id == -1) {
- unit_id = 0;
- while (drive_get(type, bus_id, unit_id) != NULL) {
- unit_id++;
- if (max_devs && unit_id >= max_devs) {
- unit_id -= max_devs;
- bus_id++;
- }
- }
- }
-
- /* check unit id */
-
- if (max_devs && unit_id >= max_devs) {
- error_report("unit %d too big (max is %d)",
- unit_id, max_devs - 1);
- return NULL;
- }
-
- /*
- * catch multiple definitions
- */
-
- if (drive_get(type, bus_id, unit_id) != NULL) {
- error_report("drive with bus=%d, unit=%d (index=%d) exists",
- bus_id, unit_id, index);
- return NULL;
+ if (detect_zeroes == BLOCKDEV_DETECT_ZEROES_OPTIONS_UNMAP &&
+ !(bdrv_flags & BDRV_O_UNMAP)) {
+ error_setg(errp, "setting detect-zeroes to unmap is not allowed "
+ "without setting discard operation to unmap");
+ goto early_err;
}
/* init */
-
dinfo = g_malloc0(sizeof(*dinfo));
- if ((buf = qemu_opts_id(opts)) != NULL) {
- dinfo->id = g_strdup(buf);
- } else {
- /* no id supplied -> create one */
- dinfo->id = g_malloc0(32);
- if (type == IF_IDE || type == IF_SCSI)
- mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
- if (max_devs)
- snprintf(dinfo->id, 32, "%s%i%s%i",
- if_name[type], bus_id, mediastr, unit_id);
- else
- snprintf(dinfo->id, 32, "%s%s%i",
- if_name[type], mediastr, unit_id);
- }
- dinfo->bdrv = bdrv_new(dinfo->id);
+ dinfo->id = g_strdup(qemu_opts_id(opts));
+ dinfo->bdrv = bdrv_new(dinfo->id, &error);
+ if (error) {
+ error_propagate(errp, error);
+ goto bdrv_new_err;
+ }
dinfo->bdrv->open_flags = snapshot ? BDRV_O_SNAPSHOT : 0;
dinfo->bdrv->read_only = ro;
- dinfo->devaddr = devaddr;
- dinfo->type = type;
- dinfo->bus = bus_id;
- dinfo->unit = unit_id;
- dinfo->cyls = cyls;
- dinfo->heads = heads;
- dinfo->secs = secs;
- dinfo->trans = translation;
- dinfo->opts = all_opts;
- dinfo->refcount = 1;
- if (serial != NULL) {
- dinfo->serial = g_strdup(serial);
- }
+ dinfo->bdrv->detect_zeroes = detect_zeroes;
QTAILQ_INSERT_TAIL(&drives, dinfo, next);
bdrv_set_on_error(dinfo->bdrv, on_read_error, on_write_error);
bdrv_set_io_limits(dinfo->bdrv, &cfg);
}
- switch(type) {
- case IF_IDE:
- case IF_SCSI:
- case IF_XEN:
- case IF_NONE:
- dinfo->media_cd = media == MEDIA_CDROM;
- break;
- case IF_SD:
- case IF_FLOPPY:
- case IF_PFLASH:
- case IF_MTD:
- break;
- case IF_VIRTIO:
- {
- /* add virtio block device */
- QemuOpts *devopts;
- devopts = qemu_opts_create_nofail(qemu_find_opts("device"));
- if (arch_type == QEMU_ARCH_S390X) {
- qemu_opt_set(devopts, "driver", "virtio-blk-s390");
- } else {
- qemu_opt_set(devopts, "driver", "virtio-blk-pci");
- }
- qemu_opt_set(devopts, "drive", dinfo->id);
- if (devaddr)
- qemu_opt_set(devopts, "addr", devaddr);
- break;
- }
- default:
- abort();
- }
if (!file || !*file) {
if (has_driver_specific_opts) {
file = NULL;
} else {
+ QDECREF(bs_opts);
+ qemu_opts_del(opts);
return dinfo;
}
}
bdrv_flags |= BDRV_O_COPY_ON_READ;
}
- if (runstate_check(RUN_STATE_INMIGRATE)) {
- bdrv_flags |= BDRV_O_INCOMING;
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ bdrv_flags |= BDRV_O_INCOMING;
+ }
+
+ bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
+
+ QINCREF(bs_opts);
+ ret = bdrv_open(&dinfo->bdrv, file, NULL, bs_opts, bdrv_flags, drv, &error);
+
+ if (ret < 0) {
+ error_setg(errp, "could not open disk image %s: %s",
+ file ?: dinfo->id, error_get_pretty(error));
+ error_free(error);
+ goto err;
+ }
+
+ if (bdrv_key_required(dinfo->bdrv))
+ autostart = 0;
+
+ QDECREF(bs_opts);
+ qemu_opts_del(opts);
+
+ return dinfo;
+
+err:
+ bdrv_unref(dinfo->bdrv);
+ QTAILQ_REMOVE(&drives, dinfo, next);
+bdrv_new_err:
+ g_free(dinfo->id);
+ g_free(dinfo);
+early_err:
+ qemu_opts_del(opts);
+err_no_opts:
+ QDECREF(bs_opts);
+ return NULL;
+}
+
+static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to)
+{
+ const char *value;
+
+ value = qemu_opt_get(opts, from);
+ if (value) {
+ qemu_opt_set(opts, to, value);
+ qemu_opt_unset(opts, from);
+ }
+}
+
+QemuOptsList qemu_legacy_drive_opts = {
+ .name = "drive",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_legacy_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 = "index",
+ .type = QEMU_OPT_NUMBER,
+ .help = "index number",
+ },{
+ .name = "media",
+ .type = QEMU_OPT_STRING,
+ .help = "media type (disk, cdrom)",
+ },{
+ .name = "if",
+ .type = QEMU_OPT_STRING,
+ .help = "interface (ide, scsi, sd, mtd, floppy, pflash, virtio)",
+ },{
+ .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 = "boot",
+ .type = QEMU_OPT_BOOL,
+ .help = "(deprecated, ignored)",
+ },{
+ .name = "addr",
+ .type = QEMU_OPT_STRING,
+ .help = "pci address (virtio only)",
+ },{
+ .name = "serial",
+ .type = QEMU_OPT_STRING,
+ .help = "disk serial number",
+ },{
+ .name = "file",
+ .type = QEMU_OPT_STRING,
+ .help = "file name",
+ },
+
+ /* Options that are passed on, but have special semantics with -drive */
+ {
+ .name = "read-only",
+ .type = QEMU_OPT_BOOL,
+ .help = "open drive file as read-only",
+ },{
+ .name = "rerror",
+ .type = QEMU_OPT_STRING,
+ .help = "read error action",
+ },{
+ .name = "werror",
+ .type = QEMU_OPT_STRING,
+ .help = "write error action",
+ },{
+ .name = "copy-on-read",
+ .type = QEMU_OPT_BOOL,
+ .help = "copy read data from backing file into image file",
+ },
+
+ { /* end of list */ }
+ },
+};
+
+DriveInfo *drive_new(QemuOpts *all_opts, BlockInterfaceType block_default_type)
+{
+ const char *value;
+ DriveInfo *dinfo = NULL;
+ QDict *bs_opts;
+ QemuOpts *legacy_opts;
+ DriveMediaType media = MEDIA_DISK;
+ BlockInterfaceType type;
+ int cyls, heads, secs, translation;
+ int max_devs, bus_id, unit_id, index;
+ const char *devaddr;
+ const char *werror, *rerror;
+ bool read_only = false;
+ bool copy_on_read;
+ const char *serial;
+ const char *filename;
+ Error *local_err = NULL;
+
+ /* Change legacy command line options into QMP ones */
+ qemu_opt_rename(all_opts, "iops", "throttling.iops-total");
+ qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read");
+ qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write");
+
+ qemu_opt_rename(all_opts, "bps", "throttling.bps-total");
+ qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read");
+ qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write");
+
+ qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max");
+ qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max");
+ qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max");
+
+ qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max");
+ qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max");
+ qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max");
+
+ qemu_opt_rename(all_opts,
+ "iops_size", "throttling.iops-size");
+
+ qemu_opt_rename(all_opts, "readonly", "read-only");
+
+ value = qemu_opt_get(all_opts, "cache");
+ if (value) {
+ int flags = 0;
+
+ if (bdrv_parse_cache_flags(value, &flags) != 0) {
+ error_report("invalid cache option");
+ return NULL;
+ }
+
+ /* Specific options take precedence */
+ if (!qemu_opt_get(all_opts, "cache.writeback")) {
+ qemu_opt_set_bool(all_opts, "cache.writeback",
+ !!(flags & BDRV_O_CACHE_WB));
+ }
+ if (!qemu_opt_get(all_opts, "cache.direct")) {
+ qemu_opt_set_bool(all_opts, "cache.direct",
+ !!(flags & BDRV_O_NOCACHE));
+ }
+ if (!qemu_opt_get(all_opts, "cache.no-flush")) {
+ qemu_opt_set_bool(all_opts, "cache.no-flush",
+ !!(flags & BDRV_O_NO_FLUSH));
+ }
+ qemu_opt_unset(all_opts, "cache");
+ }
+
+ /* Get a QDict for processing the options */
+ bs_opts = qdict_new();
+ qemu_opts_to_qdict(all_opts, bs_opts);
+
+ legacy_opts = qemu_opts_create(&qemu_legacy_drive_opts, NULL, 0,
+ &error_abort);
+ qemu_opts_absorb_qdict(legacy_opts, bs_opts, &local_err);
+ if (local_err) {
+ error_report("%s", error_get_pretty(local_err));
+ error_free(local_err);
+ goto fail;
+ }
+
+ /* Deprecated option boot=[on|off] */
+ if (qemu_opt_get(legacy_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");
+ }
+
+ /* Media type */
+ value = qemu_opt_get(legacy_opts, "media");
+ if (value) {
+ if (!strcmp(value, "disk")) {
+ media = MEDIA_DISK;
+ } else if (!strcmp(value, "cdrom")) {
+ media = MEDIA_CDROM;
+ read_only = true;
+ } else {
+ error_report("'%s' invalid media", value);
+ goto fail;
+ }
+ }
+
+ /* copy-on-read is disabled with a warning for read-only devices */
+ read_only |= qemu_opt_get_bool(legacy_opts, "read-only", false);
+ copy_on_read = qemu_opt_get_bool(legacy_opts, "copy-on-read", false);
+
+ if (read_only && copy_on_read) {
+ error_report("warning: disabling copy-on-read on read-only drive");
+ copy_on_read = false;
+ }
+
+ qdict_put(bs_opts, "read-only",
+ qstring_from_str(read_only ? "on" : "off"));
+ qdict_put(bs_opts, "copy-on-read",
+ qstring_from_str(copy_on_read ? "on" :"off"));
+
+ /* Controller type */
+ value = qemu_opt_get(legacy_opts, "if");
+ if (value) {
+ for (type = 0;
+ type < IF_COUNT && strcmp(value, if_name[type]);
+ type++) {
+ }
+ if (type == IF_COUNT) {
+ error_report("unsupported bus type '%s'", value);
+ goto fail;
+ }
+ } else {
+ type = block_default_type;
+ }
+
+ /* Geometry */
+ cyls = qemu_opt_get_number(legacy_opts, "cyls", 0);
+ heads = qemu_opt_get_number(legacy_opts, "heads", 0);
+ secs = qemu_opt_get_number(legacy_opts, "secs", 0);
+
+ if (cyls || heads || secs) {
+ if (cyls < 1) {
+ error_report("invalid physical cyls number");
+ goto fail;
+ }
+ if (heads < 1) {
+ error_report("invalid physical heads number");
+ goto fail;
+ }
+ if (secs < 1) {
+ error_report("invalid physical secs number");
+ goto fail;
+ }
+ }
+
+ translation = BIOS_ATA_TRANSLATION_AUTO;
+ value = qemu_opt_get(legacy_opts, "trans");
+ if (value != NULL) {
+ if (!cyls) {
+ error_report("'%s' trans must be used with cyls, heads and secs",
+ value);
+ goto fail;
+ }
+ if (!strcmp(value, "none")) {
+ translation = BIOS_ATA_TRANSLATION_NONE;
+ } else if (!strcmp(value, "lba")) {
+ translation = BIOS_ATA_TRANSLATION_LBA;
+ } else if (!strcmp(value, "large")) {
+ translation = BIOS_ATA_TRANSLATION_LARGE;
+ } else if (!strcmp(value, "rechs")) {
+ translation = BIOS_ATA_TRANSLATION_RECHS;
+ } else if (!strcmp(value, "auto")) {
+ translation = BIOS_ATA_TRANSLATION_AUTO;
+ } else {
+ error_report("'%s' invalid translation type", value);
+ goto fail;
+ }
+ }
+
+ if (media == MEDIA_CDROM) {
+ if (cyls || secs || heads) {
+ error_report("CHS can't be set with media=cdrom");
+ goto fail;
+ }
+ }
+
+ /* Device address specified by bus/unit or index.
+ * If none was specified, try to find the first free one. */
+ bus_id = qemu_opt_get_number(legacy_opts, "bus", 0);
+ unit_id = qemu_opt_get_number(legacy_opts, "unit", -1);
+ index = qemu_opt_get_number(legacy_opts, "index", -1);
+
+ max_devs = if_max_devs[type];
+
+ if (index != -1) {
+ if (bus_id != 0 || unit_id != -1) {
+ error_report("index cannot be used with bus and unit");
+ goto fail;
+ }
+ bus_id = drive_index_to_bus_id(type, index);
+ unit_id = drive_index_to_unit_id(type, index);
+ }
+
+ if (unit_id == -1) {
+ unit_id = 0;
+ while (drive_get(type, bus_id, unit_id) != NULL) {
+ unit_id++;
+ if (max_devs && unit_id >= max_devs) {
+ unit_id -= max_devs;
+ bus_id++;
+ }
+ }
+ }
+
+ if (max_devs && unit_id >= max_devs) {
+ error_report("unit %d too big (max is %d)", unit_id, max_devs - 1);
+ goto fail;
}
- if (media == MEDIA_CDROM) {
- /* CDROM is fine for any interface, don't check. */
- ro = 1;
- } else if (ro == 1) {
- if (type != IF_SCSI && type != IF_VIRTIO && type != IF_FLOPPY &&
- type != IF_NONE && type != IF_PFLASH) {
- error_report("read-only not supported by this bus type");
- goto err;
- }
+ if (drive_get(type, bus_id, unit_id) != NULL) {
+ error_report("drive with bus=%d, unit=%d (index=%d) exists",
+ bus_id, unit_id, index);
+ goto fail;
}
- bdrv_flags |= ro ? 0 : BDRV_O_RDWR;
+ /* Serial number */
+ serial = qemu_opt_get(legacy_opts, "serial");
- if (ro && copy_on_read) {
- error_report("warning: disabling copy_on_read on read-only drive");
+ /* no id supplied -> create one */
+ if (qemu_opts_id(all_opts) == NULL) {
+ char *new_id;
+ const char *mediastr = "";
+ if (type == IF_IDE || type == IF_SCSI) {
+ mediastr = (media == MEDIA_CDROM) ? "-cd" : "-hd";
+ }
+ if (max_devs) {
+ new_id = g_strdup_printf("%s%i%s%i", if_name[type], bus_id,
+ mediastr, unit_id);
+ } else {
+ new_id = g_strdup_printf("%s%s%i", if_name[type],
+ mediastr, unit_id);
+ }
+ qdict_put(bs_opts, "id", qstring_from_str(new_id));
+ g_free(new_id);
}
- QINCREF(bs_opts);
- ret = bdrv_open(dinfo->bdrv, file, bs_opts, bdrv_flags, drv, &error);
-
- if (ret < 0) {
- error_report("could not open disk image %s: %s",
- file ?: dinfo->id, error_get_pretty(error));
- goto err;
+ /* Add virtio block device */
+ devaddr = qemu_opt_get(legacy_opts, "addr");
+ if (devaddr && type != IF_VIRTIO) {
+ error_report("addr is not supported by this bus type");
+ goto fail;
}
- if (bdrv_key_required(dinfo->bdrv))
- autostart = 0;
-
- QDECREF(bs_opts);
- qemu_opts_del(opts);
-
- return dinfo;
-
-err:
- qemu_opts_del(opts);
- QDECREF(bs_opts);
- bdrv_unref(dinfo->bdrv);
- g_free(dinfo->id);
- QTAILQ_REMOVE(&drives, dinfo, next);
- g_free(dinfo);
- return NULL;
-}
-
-static void qemu_opt_rename(QemuOpts *opts, const char *from, const char *to)
-{
- const char *value;
-
- value = qemu_opt_get(opts, from);
- if (value) {
- qemu_opt_set(opts, to, value);
- qemu_opt_unset(opts, from);
+ if (type == IF_VIRTIO) {
+ QemuOpts *devopts;
+ devopts = qemu_opts_create(qemu_find_opts("device"), NULL, 0,
+ &error_abort);
+ if (arch_type == QEMU_ARCH_S390X) {
+ qemu_opt_set(devopts, "driver", "virtio-blk-s390");
+ } else {
+ qemu_opt_set(devopts, "driver", "virtio-blk-pci");
+ }
+ qemu_opt_set(devopts, "drive", qdict_get_str(bs_opts, "id"));
+ if (devaddr) {
+ qemu_opt_set(devopts, "addr", devaddr);
+ }
}
-}
-
-DriveInfo *drive_init(QemuOpts *all_opts, BlockInterfaceType block_default_type)
-{
- const char *value;
- /* Change legacy command line options into QMP ones */
- qemu_opt_rename(all_opts, "iops", "throttling.iops-total");
- qemu_opt_rename(all_opts, "iops_rd", "throttling.iops-read");
- qemu_opt_rename(all_opts, "iops_wr", "throttling.iops-write");
+ filename = qemu_opt_get(legacy_opts, "file");
- qemu_opt_rename(all_opts, "bps", "throttling.bps-total");
- qemu_opt_rename(all_opts, "bps_rd", "throttling.bps-read");
- qemu_opt_rename(all_opts, "bps_wr", "throttling.bps-write");
+ /* Check werror/rerror compatibility with if=... */
+ werror = qemu_opt_get(legacy_opts, "werror");
+ if (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");
+ goto fail;
+ }
+ qdict_put(bs_opts, "werror", qstring_from_str(werror));
+ }
- qemu_opt_rename(all_opts, "iops_max", "throttling.iops-total-max");
- qemu_opt_rename(all_opts, "iops_rd_max", "throttling.iops-read-max");
- qemu_opt_rename(all_opts, "iops_wr_max", "throttling.iops-write-max");
+ rerror = qemu_opt_get(legacy_opts, "rerror");
+ if (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");
+ goto fail;
+ }
+ qdict_put(bs_opts, "rerror", qstring_from_str(rerror));
+ }
- qemu_opt_rename(all_opts, "bps_max", "throttling.bps-total-max");
- qemu_opt_rename(all_opts, "bps_rd_max", "throttling.bps-read-max");
- qemu_opt_rename(all_opts, "bps_wr_max", "throttling.bps-write-max");
+ /* Actual block device init: Functionality shared with blockdev-add */
+ dinfo = blockdev_init(filename, bs_opts, &local_err);
+ bs_opts = NULL;
+ if (dinfo == NULL) {
+ if (local_err) {
+ error_report("%s", error_get_pretty(local_err));
+ error_free(local_err);
+ }
+ goto fail;
+ } else {
+ assert(!local_err);
+ }
- qemu_opt_rename(all_opts,
- "iops_size", "throttling.iops-size");
+ /* Set legacy DriveInfo fields */
+ dinfo->enable_auto_del = true;
+ dinfo->opts = all_opts;
- qemu_opt_rename(all_opts, "readonly", "read-only");
+ dinfo->cyls = cyls;
+ dinfo->heads = heads;
+ dinfo->secs = secs;
+ dinfo->trans = translation;
- value = qemu_opt_get(all_opts, "cache");
- if (value) {
- int flags = 0;
+ dinfo->type = type;
+ dinfo->bus = bus_id;
+ dinfo->unit = unit_id;
+ dinfo->devaddr = devaddr;
- if (bdrv_parse_cache_flags(value, &flags) != 0) {
- error_report("invalid cache option");
- return NULL;
- }
+ dinfo->serial = g_strdup(serial);
- /* Specific options take precedence */
- if (!qemu_opt_get(all_opts, "cache.writeback")) {
- qemu_opt_set_bool(all_opts, "cache.writeback",
- !!(flags & BDRV_O_CACHE_WB));
- }
- if (!qemu_opt_get(all_opts, "cache.direct")) {
- qemu_opt_set_bool(all_opts, "cache.direct",
- !!(flags & BDRV_O_NOCACHE));
- }
- if (!qemu_opt_get(all_opts, "cache.no-flush")) {
- qemu_opt_set_bool(all_opts, "cache.no-flush",
- !!(flags & BDRV_O_NO_FLUSH));
- }
- qemu_opt_unset(all_opts, "cache");
+ switch(type) {
+ case IF_IDE:
+ case IF_SCSI:
+ case IF_XEN:
+ case IF_NONE:
+ dinfo->media_cd = media == MEDIA_CDROM;
+ break;
+ default:
+ break;
}
- return blockdev_init(all_opts, block_default_type);
+fail:
+ qemu_opts_del(legacy_opts);
+ QDECREF(bs_opts);
+ return dinfo;
}
void do_commit(Monitor *mon, const QDict *qdict)
qmp_transaction(&list, errp);
}
-void qmp_blockdev_snapshot_sync(const char *device, const char *snapshot_file,
+void qmp_blockdev_snapshot_sync(bool has_device, const char *device,
+ bool has_node_name, const char *node_name,
+ const char *snapshot_file,
+ bool has_snapshot_node_name,
+ const char *snapshot_node_name,
bool has_format, const char *format,
- bool has_mode, enum NewImageMode mode,
- Error **errp)
+ bool has_mode, NewImageMode mode, Error **errp)
{
BlockdevSnapshot snapshot = {
+ .has_device = has_device,
.device = (char *) device,
+ .has_node_name = has_node_name,
+ .node_name = (char *) node_name,
.snapshot_file = (char *) snapshot_file,
+ .has_snapshot_node_name = has_snapshot_node_name,
+ .snapshot_node_name = (char *) snapshot_node_name,
.has_format = has_format,
.format = (char *) format,
.has_mode = has_mode,
}
ret = bdrv_snapshot_find_by_id_and_name(bs, id, name, &sn, &local_err);
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
return NULL;
}
}
bdrv_snapshot_delete(bs, id, name, &local_err);
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
return NULL;
}
static void internal_snapshot_prepare(BlkTransactionState *common,
Error **errp)
{
+ Error *local_err = NULL;
const char *device;
const char *name;
BlockDriverState *bs;
}
/* check whether a snapshot with name exist */
- ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn, errp);
- if (error_is_set(errp)) {
+ ret = bdrv_snapshot_find_by_id_and_name(bs, NULL, name, &old_sn,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
return;
} else if (ret) {
error_setg(errp,
{
BlockDriver *drv;
int flags, ret;
+ QDict *options = NULL;
Error *local_err = NULL;
+ bool has_device = false;
const char *device;
+ bool has_node_name = false;
+ const char *node_name;
+ bool has_snapshot_node_name = false;
+ const char *snapshot_node_name;
const char *new_image_file;
const char *format = "qcow2";
enum NewImageMode mode = NEW_IMAGE_MODE_ABSOLUTE_PATHS;
/* get parameters */
g_assert(action->kind == TRANSACTION_ACTION_KIND_BLOCKDEV_SNAPSHOT_SYNC);
+ has_device = action->blockdev_snapshot_sync->has_device;
device = action->blockdev_snapshot_sync->device;
+ has_node_name = action->blockdev_snapshot_sync->has_node_name;
+ node_name = action->blockdev_snapshot_sync->node_name;
+ has_snapshot_node_name =
+ action->blockdev_snapshot_sync->has_snapshot_node_name;
+ snapshot_node_name = action->blockdev_snapshot_sync->snapshot_node_name;
+
new_image_file = action->blockdev_snapshot_sync->snapshot_file;
if (action->blockdev_snapshot_sync->has_format) {
format = action->blockdev_snapshot_sync->format;
return;
}
- state->old_bs = bdrv_find(device);
- if (!state->old_bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ state->old_bs = bdrv_lookup_bs(has_device ? device : NULL,
+ has_node_name ? node_name : NULL,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ if (has_node_name && !has_snapshot_node_name) {
+ error_setg(errp, "New snapshot node name missing");
+ return;
+ }
+
+ if (has_snapshot_node_name && bdrv_find_node(snapshot_node_name)) {
+ error_setg(errp, "New snapshot node name already existing");
return;
}
return;
}
- if (bdrv_in_use(state->old_bs)) {
- error_set(errp, QERR_DEVICE_IN_USE, device);
+ if (bdrv_op_is_blocked(state->old_bs,
+ BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT, errp)) {
return;
}
}
}
+ if (!bdrv_is_first_non_filter(state->old_bs)) {
+ error_set(errp, QERR_FEATURE_DISABLED, "snapshot");
+ return;
+ }
+
flags = state->old_bs->open_flags;
/* create new image w/backing file */
state->old_bs->filename,
state->old_bs->drv->format_name,
NULL, -1, flags, &local_err, false);
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
return;
}
}
- /* We will manually add the backing_hd field to the bs later */
- state->new_bs = bdrv_new("");
+ if (has_snapshot_node_name) {
+ options = qdict_new();
+ qdict_put(options, "node-name",
+ qstring_from_str(snapshot_node_name));
+ }
+
/* TODO Inherit bs->options or only take explicit options with an
* extended QMP command? */
- ret = bdrv_open(state->new_bs, new_image_file, NULL,
+ assert(state->new_bs == NULL);
+ ret = bdrv_open(&state->new_bs, new_image_file, NULL, options,
flags | BDRV_O_NO_BACKING, drv, &local_err);
+ /* We will manually add the backing_hd field to the bs later */
if (ret != 0) {
error_propagate(errp, local_err);
}
backup->has_on_source_error, backup->on_source_error,
backup->has_on_target_error, backup->on_target_error,
&local_err);
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
state->bs = NULL;
state->job = NULL;
QSIMPLEQ_INSERT_TAIL(&snap_bdrv_states, state, entry);
state->ops->prepare(state, &local_err);
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
goto delete_and_fail;
}
static void eject_device(BlockDriverState *bs, int force, Error **errp)
{
- if (bdrv_in_use(bs)) {
- error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs));
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) {
return;
}
if (!bdrv_dev_has_removable_media(bs)) {
- error_set(errp, QERR_DEVICE_NOT_REMOVABLE, bdrv_get_device_name(bs));
+ error_setg(errp, "Device '%s' is not removable",
+ bdrv_get_device_name(bs));
return;
}
if (bdrv_dev_is_medium_locked(bs) && !bdrv_dev_is_tray_open(bs)) {
bdrv_dev_eject_request(bs, force);
if (!force) {
- error_set(errp, QERR_DEVICE_LOCKED, bdrv_get_device_name(bs));
+ error_setg(errp, "Device '%s' is locked",
+ bdrv_get_device_name(bs));
return;
}
}
eject_device(bs, force, errp);
}
-void qmp_block_passwd(const char *device, const char *password, Error **errp)
+void qmp_block_passwd(bool has_device, const char *device,
+ bool has_node_name, const char *node_name,
+ const char *password, Error **errp)
{
+ Error *local_err = NULL;
BlockDriverState *bs;
int err;
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ bs = bdrv_lookup_bs(has_device ? device : NULL,
+ has_node_name ? node_name : NULL,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
return;
}
Error *local_err = NULL;
int ret;
- ret = bdrv_open(bs, filename, NULL, bdrv_flags, drv, &local_err);
+ ret = bdrv_open(&bs, filename, NULL, NULL, bdrv_flags, drv, &local_err);
if (ret < 0) {
error_propagate(errp, local_err);
return;
}
void qmp_change_blockdev(const char *device, const char *filename,
- bool has_format, const char *format, Error **errp)
+ const char *format, Error **errp)
{
BlockDriverState *bs;
BlockDriver *drv = NULL;
}
eject_device(bs, 0, &err);
- if (error_is_set(&err)) {
+ if (err) {
error_propagate(errp, err);
return;
}
{
ThrottleConfig cfg;
BlockDriverState *bs;
+ AioContext *aio_context;
bs = bdrv_find(device);
if (!bs) {
return;
}
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
if (!bs->io_limits_enabled && throttle_enabled(&cfg)) {
bdrv_io_limits_enable(bs);
} else if (bs->io_limits_enabled && !throttle_enabled(&cfg)) {
if (bs->io_limits_enabled) {
bdrv_set_io_limits(bs, &cfg);
}
+
+ aio_context_release(aio_context);
}
int do_drive_del(Monitor *mon, const QDict *qdict, QObject **ret_data)
{
const char *id = qdict_get_str(qdict, "id");
BlockDriverState *bs;
+ Error *local_err = NULL;
bs = bdrv_find(id);
if (!bs) {
- qerror_report(QERR_DEVICE_NOT_FOUND, id);
+ error_report("Device '%s' not found", id);
return -1;
}
- if (bdrv_in_use(bs)) {
- qerror_report(QERR_DEVICE_IN_USE, id);
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) {
+ error_report("%s", error_get_pretty(local_err));
+ error_free(local_err);
return -1;
}
bdrv_set_on_error(bs, BLOCKDEV_ON_ERROR_REPORT,
BLOCKDEV_ON_ERROR_REPORT);
} else {
- drive_uninit(drive_get_by_blockdev(bs));
+ drive_del(drive_get_by_blockdev(bs));
}
return 0;
}
-void qmp_block_resize(const char *device, int64_t size, Error **errp)
+void qmp_block_resize(bool has_device, const char *device,
+ bool has_node_name, const char *node_name,
+ int64_t size, Error **errp)
{
+ Error *local_err = NULL;
BlockDriverState *bs;
int ret;
- bs = bdrv_find(device);
- if (!bs) {
- error_set(errp, QERR_DEVICE_NOT_FOUND, device);
+ bs = bdrv_lookup_bs(has_device ? device : NULL,
+ has_node_name ? node_name : NULL,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ if (!bdrv_is_first_non_filter(bs)) {
+ error_set(errp, QERR_FEATURE_DISABLED, "resize");
return;
}
return;
}
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_STREAM, errp)) {
+ return;
+ }
+
if (base) {
base_bs = bdrv_find_backing_image(bs, base);
if (base_bs == NULL) {
stream_start(bs, base_bs, base, has_speed ? speed : 0,
on_error, block_job_cb, bs, &local_err);
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
return;
}
*/
BlockdevOnError on_error = BLOCKDEV_ON_ERROR_REPORT;
+ if (!has_speed) {
+ speed = 0;
+ }
+
/* drain all i/o before commits */
bdrv_drain_all();
return;
}
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_COMMIT, errp)) {
+ return;
+ }
+
/* default top_bs is the active layer */
top_bs = bs;
return;
}
- commit_start(bs, base_bs, top_bs, speed, on_error, block_job_cb, bs,
- &local_err);
+ if (top_bs == bs) {
+ commit_active_start(bs, base_bs, speed, on_error, block_job_cb,
+ bs, &local_err);
+ } else {
+ 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;
}
}
- if (bdrv_in_use(bs)) {
- error_set(errp, QERR_DEVICE_IN_USE, device);
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_BACKUP_SOURCE, errp)) {
return;
}
}
}
- if (error_is_set(&local_err)) {
+ if (local_err) {
error_propagate(errp, local_err);
return;
}
- target_bs = bdrv_new("");
- ret = bdrv_open(target_bs, target, NULL, flags, drv, &local_err);
+ target_bs = NULL;
+ ret = bdrv_open(&target_bs, target, NULL, NULL, flags, drv, &local_err);
if (ret < 0) {
- bdrv_unref(target_bs);
error_propagate(errp, local_err);
return;
}
}
}
+BlockDeviceInfoList *qmp_query_named_block_nodes(Error **errp)
+{
+ return bdrv_named_nodes_list();
+}
+
#define DEFAULT_MIRROR_BUF_SIZE (10 << 20)
void qmp_drive_mirror(const char *device, const char *target,
}
}
- if (bdrv_in_use(bs)) {
- error_set(errp, QERR_DEVICE_IN_USE, device);
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_MIRROR, errp)) {
return;
}
if (!source && sync == MIRROR_SYNC_MODE_TOP) {
sync = MIRROR_SYNC_MODE_FULL;
}
+ if (sync == MIRROR_SYNC_MODE_NONE) {
+ source = bs;
+ }
size = bdrv_getlength(bs);
if (size < 0) {
return;
}
- if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) {
+ if ((sync == MIRROR_SYNC_MODE_FULL || !source)
+ && mode != NEW_IMAGE_MODE_EXISTING)
+ {
/* create new image w/o backing file */
assert(format && drv);
bdrv_img_create(target, format,
} else {
switch (mode) {
case NEW_IMAGE_MODE_EXISTING:
- ret = 0;
break;
case NEW_IMAGE_MODE_ABSOLUTE_PATHS:
/* create new image with backing file */
}
}
- if (error_is_set(&local_err)) {
+ if (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, NULL, flags | BDRV_O_NO_BACKING, drv,
- &local_err);
+ target_bs = NULL;
+ ret = bdrv_open(&target_bs, target, NULL, NULL, flags | BDRV_O_NO_BACKING,
+ drv, &local_err);
if (ret < 0) {
- bdrv_unref(target_bs);
error_propagate(errp, local_err);
return;
}
return;
}
if (job->paused && !force) {
- error_set(errp, QERR_BLOCK_JOB_PAUSED, device);
+ error_setg(errp, "The block job for device '%s' is currently paused",
+ device);
return;
}
block_job_complete(job, errp);
}
+void qmp_blockdev_add(BlockdevOptions *options, Error **errp)
+{
+ QmpOutputVisitor *ov = qmp_output_visitor_new();
+ DriveInfo *dinfo;
+ QObject *obj;
+ QDict *qdict;
+ Error *local_err = NULL;
+
+ /* Require an ID in the top level */
+ if (!options->has_id) {
+ error_setg(errp, "Block device needs an ID");
+ goto fail;
+ }
+
+ /* TODO Sort it out in raw-posix and drive_new(): Reject aio=native with
+ * cache.direct=false instead of silently switching to aio=threads, except
+ * when called from drive_new().
+ *
+ * For now, simply forbidding the combination for all drivers will do. */
+ if (options->has_aio && options->aio == BLOCKDEV_AIO_OPTIONS_NATIVE) {
+ bool direct = options->has_cache &&
+ options->cache->has_direct &&
+ options->cache->direct;
+ if (!direct) {
+ error_setg(errp, "aio=native requires cache.direct=true");
+ goto fail;
+ }
+ }
+
+ visit_type_BlockdevOptions(qmp_output_get_visitor(ov),
+ &options, NULL, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto fail;
+ }
+
+ obj = qmp_output_get_qobject(ov);
+ qdict = qobject_to_qdict(obj);
+
+ qdict_flatten(qdict);
+
+ dinfo = blockdev_init(NULL, qdict, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto fail;
+ }
+
+ if (bdrv_key_required(dinfo->bdrv)) {
+ drive_del(dinfo);
+ error_setg(errp, "blockdev-add doesn't support encrypted devices");
+ goto fail;
+ }
+
+fail:
+ qmp_output_visitor_cleanup(ov);
+}
+
static void do_qmp_query_block_jobs_one(void *opaque, BlockDriverState *bs)
{
BlockJobInfoList **prev = opaque;
.head = QTAILQ_HEAD_INITIALIZER(qemu_common_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,
.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,
.name = "werror",
.type = QEMU_OPT_STRING,
.help = "write error action",
- },{
- .name = "addr",
- .type = QEMU_OPT_STRING,
- .help = "pci address (virtio only)",
},{
.name = "read-only",
.type = QEMU_OPT_BOOL,
.type = QEMU_OPT_BOOL,
.help = "copy read data from backing file into image file",
},{
- .name = "boot",
- .type = QEMU_OPT_BOOL,
- .help = "(deprecated, ignored)",
+ .name = "detect-zeroes",
+ .type = QEMU_OPT_STRING,
+ .help = "try to optimize zero writes (off, on, unmap)",
},
{ /* end of list */ }
},
projects / qemu.git / blobdiff