*/
#include "qemu/osdep.h"
-#include "qapi-visit.h"
+#include "qemu-common.h"
#include "qapi/error.h"
+#include "qapi/qapi-visit-sockets.h"
+#include "qapi/qapi-visit-block-core.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qobject-input-visitor.h"
+#include "qapi/qobject-output-visitor.h"
#include "qemu/uri.h"
#include "qemu/error-report.h"
+#include "qemu/main-loop.h"
+#include "qemu/module.h"
+#include "qemu/option.h"
#include "qemu/sockets.h"
#include "block/block_int.h"
+#include "block/qdict.h"
#include "sysemu/block-backend.h"
#include "qemu/bitops.h"
#include "qemu/cutils.h"
+#include "trace.h"
#define SD_PROTO_VER 0x01
(1UL << inode->block_size_shift));
}
-#undef DPRINTF
-#ifdef DEBUG_SDOG
-#define DEBUG_SDOG_PRINT 1
-#else
-#define DEBUG_SDOG_PRINT 0
-#endif
-#define DPRINTF(fmt, args...) \
- do { \
- if (DEBUG_SDOG_PRINT) { \
- fprintf(stderr, "%s %d: " fmt, __func__, __LINE__, ##args); \
- } \
- } while (0)
-
typedef struct SheepdogAIOCB SheepdogAIOCB;
typedef struct BDRVSheepdogState BDRVSheepdogState;
uint32_t aioreq_seq_num;
/* Every aio request must be linked to either of these queues. */
- QLIST_HEAD(inflight_aio_head, AIOReq) inflight_aio_head;
- QLIST_HEAD(failed_aio_head, AIOReq) failed_aio_head;
+ QLIST_HEAD(, AIOReq) inflight_aio_head;
+ QLIST_HEAD(, AIOReq) failed_aio_head;
CoMutex queue_lock;
CoQueue overlapping_queue;
- QLIST_HEAD(inflight_aiocb_head, SheepdogAIOCB) inflight_aiocb_head;
+ QLIST_HEAD(, SheepdogAIOCB) inflight_aiocb_head;
};
typedef struct BDRVSheepdogReopenState {
int cache_flags;
} BDRVSheepdogReopenState;
-static const char * sd_strerror(int err)
+static const char *sd_strerror(int err)
{
int i;
qemu_co_mutex_unlock(&s->queue_lock);
}
-static SocketAddress *sd_socket_address(const char *path,
- const char *host, const char *port)
-{
- SocketAddress *addr = g_new0(SocketAddress, 1);
-
- if (path) {
- addr->type = SOCKET_ADDRESS_TYPE_UNIX;
- addr->u.q_unix.path = g_strdup(path);
- } else {
- addr->type = SOCKET_ADDRESS_TYPE_INET;
- addr->u.inet.host = g_strdup(host ?: SD_DEFAULT_ADDR);
- addr->u.inet.port = g_strdup(port ?: stringify(SD_DEFAULT_PORT));
- }
-
- return addr;
-}
-
static SocketAddress *sd_server_config(QDict *options, Error **errp)
{
QDict *server = NULL;
- QObject *crumpled_server = NULL;
Visitor *iv = NULL;
SocketAddress *saddr = NULL;
Error *local_err = NULL;
qdict_extract_subqdict(options, &server, "server.");
- crumpled_server = qdict_crumple(server, errp);
- if (!crumpled_server) {
+ iv = qobject_input_visitor_new_flat_confused(server, errp);
+ if (!iv) {
goto done;
}
- /*
- * FIXME .numeric, .to, .ipv4 or .ipv6 don't work with -drive
- * server.type=inet. .to doesn't matter, it's ignored anyway.
- * That's because when @options come from -blockdev or
- * blockdev_add, members are typed according to the QAPI schema,
- * but when they come from -drive, they're all QString. The
- * visitor expects the former.
- */
- iv = qobject_input_visitor_new(crumpled_server);
visit_type_SocketAddress(iv, NULL, &saddr, &local_err);
if (local_err) {
error_propagate(errp, local_err);
done:
visit_free(iv);
- qobject_decref(crumpled_server);
- QDECREF(server);
+ qobject_unref(server);
return saddr;
}
if (s->addr->type == SOCKET_ADDRESS_TYPE_INET && fd >= 0) {
int ret = socket_set_nodelay(fd);
if (ret < 0) {
- error_report("%s", strerror(errno));
+ warn_report("can't set TCP_NODELAY: %s", strerror(errno));
}
}
Error *local_err = NULL;
s->fd = get_sheep_fd(s, &local_err);
if (s->fd < 0) {
- DPRINTF("Wait for connection to be established\n");
+ trace_sheepdog_reconnect_to_sdog();
error_report_err(local_err);
qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 1000000000ULL);
}
break;
case AIOCB_FLUSH_CACHE:
if (rsp.result == SD_RES_INVALID_PARMS) {
- DPRINTF("disable cache since the server doesn't support it\n");
+ trace_sheepdog_aio_read_response();
s->cache_flags = SD_FLAG_CMD_DIRECT;
rsp.result = SD_RES_SUCCESS;
}
cfg->uri = uri = uri_parse(filename);
if (!uri) {
- error_setg(&err, "invalid URI");
+ error_setg(&err, "invalid URI '%s'", filename);
goto out;
}
SheepdogVdiReq hdr;
SheepdogVdiRsp *rsp = (SheepdogVdiRsp *)&hdr;
unsigned int wlen, rlen = 0;
- char buf[SD_MAX_VDI_LEN + SD_MAX_VDI_TAG_LEN];
+ char buf[SD_MAX_VDI_LEN + SD_MAX_VDI_TAG_LEN] QEMU_NONSTRING;
fd = connect_to_sdog(s, errp);
if (fd < 0) {
if (!tag) {
tag = "";
}
- if (tag && strlen(tag) >= SD_MAX_VDI_TAG_LEN) {
+ if (strlen(tag) >= SD_MAX_VDI_TAG_LEN) {
error_setg(errp, "value of parameter 'tag' is too long");
ret = -EINVAL;
goto err_no_fd;
s->discard_supported = true;
if (snap_id || tag[0]) {
- DPRINTF("%" PRIx32 " snapshot inode was open.\n", vid);
+ trace_sheepdog_open(vid);
s->is_snapshot = true;
}
return 0;
}
-static int sd_prealloc(const char *filename, Error **errp)
+static int sd_prealloc(BlockDriverState *bs, int64_t old_size, int64_t new_size,
+ Error **errp)
{
BlockBackend *blk = NULL;
- BDRVSheepdogState *base = NULL;
+ BDRVSheepdogState *base = bs->opaque;
unsigned long buf_size;
uint32_t idx, max_idx;
uint32_t object_size;
- int64_t vdi_size;
void *buf = NULL;
int ret;
- blk = blk_new_open(filename, NULL, NULL,
- BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, errp);
- if (blk == NULL) {
- ret = -EIO;
+ blk = blk_new(bdrv_get_aio_context(bs),
+ BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE | BLK_PERM_RESIZE,
+ BLK_PERM_ALL);
+
+ ret = blk_insert_bs(blk, bs, errp);
+ if (ret < 0) {
goto out_with_err_set;
}
blk_set_allow_write_beyond_eof(blk, true);
- vdi_size = blk_getlength(blk);
- if (vdi_size < 0) {
- ret = vdi_size;
- goto out;
- }
-
- base = blk_bs(blk)->opaque;
object_size = (UINT32_C(1) << base->inode.block_size_shift);
buf_size = MIN(object_size, SD_DATA_OBJ_SIZE);
buf = g_malloc0(buf_size);
- max_idx = DIV_ROUND_UP(vdi_size, buf_size);
+ max_idx = DIV_ROUND_UP(new_size, buf_size);
- for (idx = 0; idx < max_idx; idx++) {
+ for (idx = old_size / buf_size; idx < max_idx; idx++) {
/*
* The created image can be a cloned image, so we need to read
* a data from the source image.
error_setg_errno(errp, -ret, "Can't pre-allocate");
}
out_with_err_set:
- if (blk) {
- blk_unref(blk);
- }
+ blk_unref(blk);
g_free(buf);
return ret;
}
+static int sd_create_prealloc(BlockdevOptionsSheepdog *location, int64_t size,
+ Error **errp)
+{
+ BlockDriverState *bs;
+ Visitor *v;
+ QObject *obj = NULL;
+ QDict *qdict;
+ int ret;
+
+ v = qobject_output_visitor_new(&obj);
+ visit_type_BlockdevOptionsSheepdog(v, NULL, &location, &error_abort);
+ visit_free(v);
+
+ qdict = qobject_to(QDict, obj);
+ qdict_flatten(qdict);
+
+ qdict_put_str(qdict, "driver", "sheepdog");
+
+ bs = bdrv_open(NULL, NULL, qdict, BDRV_O_PROTOCOL | BDRV_O_RDWR, errp);
+ if (bs == NULL) {
+ ret = -EIO;
+ goto fail;
+ }
+
+ ret = sd_prealloc(bs, 0, size, errp);
+fail:
+ bdrv_unref(bs);
+ qobject_unref(qdict);
+ return ret;
+}
+
+static int parse_redundancy(BDRVSheepdogState *s, SheepdogRedundancy *opt)
+{
+ struct SheepdogInode *inode = &s->inode;
+
+ switch (opt->type) {
+ case SHEEPDOG_REDUNDANCY_TYPE_FULL:
+ if (opt->u.full.copies > SD_MAX_COPIES || opt->u.full.copies < 1) {
+ return -EINVAL;
+ }
+ inode->copy_policy = 0;
+ inode->nr_copies = opt->u.full.copies;
+ return 0;
+
+ case SHEEPDOG_REDUNDANCY_TYPE_ERASURE_CODED:
+ {
+ int64_t copy = opt->u.erasure_coded.data_strips;
+ int64_t parity = opt->u.erasure_coded.parity_strips;
+
+ if (copy != 2 && copy != 4 && copy != 8 && copy != 16) {
+ return -EINVAL;
+ }
+
+ if (parity >= SD_EC_MAX_STRIP || parity < 1) {
+ return -EINVAL;
+ }
+
+ /*
+ * 4 bits for parity and 4 bits for data.
+ * We have to compress upper data bits because it can't represent 16
+ */
+ inode->copy_policy = ((copy / 2) << 4) + parity;
+ inode->nr_copies = copy + parity;
+ return 0;
+ }
+
+ default:
+ g_assert_not_reached();
+ }
+
+ return -EINVAL;
+}
+
/*
* Sheepdog support two kinds of redundancy, full replication and erasure
* coding.
* # create a erasure coded vdi with x data strips and y parity strips
* -o redundancy=x:y (x must be one of {2,4,8,16} and 1 <= y < SD_EC_MAX_STRIP)
*/
-static int parse_redundancy(BDRVSheepdogState *s, const char *opt)
+static SheepdogRedundancy *parse_redundancy_str(const char *opt)
{
- struct SheepdogInode *inode = &s->inode;
+ SheepdogRedundancy *redundancy;
const char *n1, *n2;
long copy, parity;
char p[10];
+ int ret;
pstrcpy(p, sizeof(p), opt);
n1 = strtok(p, ":");
n2 = strtok(NULL, ":");
if (!n1) {
- return -EINVAL;
+ return NULL;
}
- copy = strtol(n1, NULL, 10);
- /* FIXME fix error checking by switching to qemu_strtol() */
- if (copy > SD_MAX_COPIES || copy < 1) {
- return -EINVAL;
- }
- if (!n2) {
- inode->copy_policy = 0;
- inode->nr_copies = copy;
- return 0;
+ ret = qemu_strtol(n1, NULL, 10, ©);
+ if (ret < 0) {
+ return NULL;
}
- if (copy != 2 && copy != 4 && copy != 8 && copy != 16) {
- return -EINVAL;
- }
+ redundancy = g_new0(SheepdogRedundancy, 1);
+ if (!n2) {
+ *redundancy = (SheepdogRedundancy) {
+ .type = SHEEPDOG_REDUNDANCY_TYPE_FULL,
+ .u.full.copies = copy,
+ };
+ } else {
+ ret = qemu_strtol(n2, NULL, 10, &parity);
+ if (ret < 0) {
+ g_free(redundancy);
+ return NULL;
+ }
- parity = strtol(n2, NULL, 10);
- /* FIXME fix error checking by switching to qemu_strtol() */
- if (parity >= SD_EC_MAX_STRIP || parity < 1) {
- return -EINVAL;
+ *redundancy = (SheepdogRedundancy) {
+ .type = SHEEPDOG_REDUNDANCY_TYPE_ERASURE_CODED,
+ .u.erasure_coded = {
+ .data_strips = copy,
+ .parity_strips = parity,
+ },
+ };
}
- /*
- * 4 bits for parity and 4 bits for data.
- * We have to compress upper data bits because it can't represent 16
- */
- inode->copy_policy = ((copy / 2) << 4) + parity;
- inode->nr_copies = copy + parity;
-
- return 0;
+ return redundancy;
}
-static int parse_block_size_shift(BDRVSheepdogState *s, QemuOpts *opt)
+static int parse_block_size_shift(BDRVSheepdogState *s,
+ BlockdevCreateOptionsSheepdog *opts)
{
struct SheepdogInode *inode = &s->inode;
uint64_t object_size;
int obj_order;
- object_size = qemu_opt_get_size_del(opt, BLOCK_OPT_OBJECT_SIZE, 0);
- if (object_size) {
+ if (opts->has_object_size) {
+ object_size = opts->object_size;
+
if ((object_size - 1) & object_size) { /* not a power of 2? */
return -EINVAL;
}
return 0;
}
-static int sd_create(const char *filename, QemuOpts *opts,
- Error **errp)
+static int sd_co_create(BlockdevCreateOptions *options, Error **errp)
{
- Error *err = NULL;
+ BlockdevCreateOptionsSheepdog *opts = &options->u.sheepdog;
int ret = 0;
uint32_t vid = 0;
char *backing_file = NULL;
char *buf = NULL;
BDRVSheepdogState *s;
- SheepdogConfig cfg;
uint64_t max_vdi_size;
bool prealloc = false;
+ assert(options->driver == BLOCKDEV_DRIVER_SHEEPDOG);
+
s = g_new0(BDRVSheepdogState, 1);
- if (strstr(filename, "://")) {
- sd_parse_uri(&cfg, filename, &err);
- } else {
- parse_vdiname(&cfg, filename, &err);
- }
- if (err) {
- error_propagate(errp, err);
+ /* Steal SocketAddress from QAPI, set NULL to prevent double free */
+ s->addr = opts->location->server;
+ opts->location->server = NULL;
+
+ if (strlen(opts->location->vdi) >= sizeof(s->name)) {
+ error_setg(errp, "'vdi' string too long");
+ ret = -EINVAL;
goto out;
}
+ pstrcpy(s->name, sizeof(s->name), opts->location->vdi);
- buf = cfg.port ? g_strdup_printf("%d", cfg.port) : NULL;
- s->addr = sd_socket_address(cfg.path, cfg.host, buf);
- g_free(buf);
- strcpy(s->name, cfg.vdi);
- sd_config_done(&cfg);
+ s->inode.vdi_size = opts->size;
+ backing_file = opts->backing_file;
- s->inode.vdi_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
- BDRV_SECTOR_SIZE);
- backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE);
- buf = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
- if (!buf || !strcmp(buf, "off")) {
+ if (!opts->has_preallocation) {
+ opts->preallocation = PREALLOC_MODE_OFF;
+ }
+ switch (opts->preallocation) {
+ case PREALLOC_MODE_OFF:
prealloc = false;
- } else if (!strcmp(buf, "full")) {
+ break;
+ case PREALLOC_MODE_FULL:
prealloc = true;
- } else {
- error_setg(errp, "Invalid preallocation mode: '%s'", buf);
+ break;
+ default:
+ error_setg(errp, "Preallocation mode not supported for Sheepdog");
ret = -EINVAL;
goto out;
}
- g_free(buf);
- buf = qemu_opt_get_del(opts, BLOCK_OPT_REDUNDANCY);
- if (buf) {
- ret = parse_redundancy(s, buf);
+ if (opts->has_redundancy) {
+ ret = parse_redundancy(s, opts->redundancy);
if (ret < 0) {
- error_setg(errp, "Invalid redundancy mode: '%s'", buf);
+ error_setg(errp, "Invalid redundancy mode");
goto out;
}
}
goto out;
}
- if (backing_file) {
+ if (opts->has_backing_file) {
BlockBackend *blk;
BDRVSheepdogState *base;
BlockDriver *drv;
/* Currently, only Sheepdog backing image is supported. */
- drv = bdrv_find_protocol(backing_file, true, NULL);
+ drv = bdrv_find_protocol(opts->backing_file, true, NULL);
if (!drv || strcmp(drv->protocol_name, "sheepdog") != 0) {
error_setg(errp, "backing_file must be a sheepdog image");
ret = -EINVAL;
goto out;
}
- blk = blk_new_open(backing_file, NULL, NULL,
+ blk = blk_new_open(opts->backing_file, NULL, NULL,
BDRV_O_PROTOCOL, errp);
if (blk == NULL) {
ret = -EIO;
}
if (prealloc) {
- ret = sd_prealloc(filename, errp);
+ ret = sd_create_prealloc(opts->location, opts->size, errp);
}
out:
g_free(backing_file);
g_free(buf);
+ g_free(s->addr);
g_free(s);
return ret;
}
+static int coroutine_fn sd_co_create_opts(BlockDriver *drv,
+ const char *filename,
+ QemuOpts *opts,
+ Error **errp)
+{
+ BlockdevCreateOptions *create_options = NULL;
+ QDict *qdict, *location_qdict;
+ Visitor *v;
+ char *redundancy;
+ Error *local_err = NULL;
+ int ret;
+
+ redundancy = qemu_opt_get_del(opts, BLOCK_OPT_REDUNDANCY);
+
+ qdict = qemu_opts_to_qdict(opts, NULL);
+ qdict_put_str(qdict, "driver", "sheepdog");
+
+ location_qdict = qdict_new();
+ qdict_put(qdict, "location", location_qdict);
+
+ sd_parse_filename(filename, location_qdict, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ qdict_flatten(qdict);
+
+ /* Change legacy command line options into QMP ones */
+ static const QDictRenames opt_renames[] = {
+ { BLOCK_OPT_BACKING_FILE, "backing-file" },
+ { BLOCK_OPT_OBJECT_SIZE, "object-size" },
+ { NULL, NULL },
+ };
+
+ if (!qdict_rename_keys(qdict, opt_renames, errp)) {
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ /* Get the QAPI object */
+ v = qobject_input_visitor_new_flat_confused(qdict, errp);
+ if (!v) {
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ visit_type_BlockdevCreateOptions(v, NULL, &create_options, &local_err);
+ visit_free(v);
+
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto fail;
+ }
+
+ assert(create_options->driver == BLOCKDEV_DRIVER_SHEEPDOG);
+ create_options->u.sheepdog.size =
+ ROUND_UP(create_options->u.sheepdog.size, BDRV_SECTOR_SIZE);
+
+ if (redundancy) {
+ create_options->u.sheepdog.has_redundancy = true;
+ create_options->u.sheepdog.redundancy =
+ parse_redundancy_str(redundancy);
+ if (create_options->u.sheepdog.redundancy == NULL) {
+ error_setg(errp, "Invalid redundancy mode");
+ ret = -EINVAL;
+ goto fail;
+ }
+ }
+
+ ret = sd_co_create(create_options, errp);
+fail:
+ qapi_free_BlockdevCreateOptions(create_options);
+ qobject_unref(qdict);
+ g_free(redundancy);
+ return ret;
+}
+
static void sd_close(BlockDriverState *bs)
{
Error *local_err = NULL;
unsigned int wlen, rlen = 0;
int fd, ret;
- DPRINTF("%s\n", s->name);
+ trace_sheepdog_close(s->name);
fd = connect_to_sdog(s, &local_err);
if (fd < 0) {
return s->inode.vdi_size;
}
-static int sd_truncate(BlockDriverState *bs, int64_t offset,
- PreallocMode prealloc, Error **errp)
+static int coroutine_fn sd_co_truncate(BlockDriverState *bs, int64_t offset,
+ bool exact, PreallocMode prealloc,
+ BdrvRequestFlags flags, Error **errp)
{
BDRVSheepdogState *s = bs->opaque;
int ret, fd;
unsigned int datalen;
uint64_t max_vdi_size;
+ int64_t old_size = s->inode.vdi_size;
- if (prealloc != PREALLOC_MODE_OFF) {
+ if (prealloc != PREALLOC_MODE_OFF && prealloc != PREALLOC_MODE_FULL) {
error_setg(errp, "Unsupported preallocation mode '%s'",
PreallocMode_str(prealloc));
return -ENOTSUP;
}
max_vdi_size = (UINT64_C(1) << s->inode.block_size_shift) * MAX_DATA_OBJS;
- if (offset < s->inode.vdi_size) {
+ if (offset < old_size) {
error_setg(errp, "shrinking is not supported");
return -EINVAL;
} else if (offset > max_vdi_size) {
}
/* we don't need to update entire object */
- datalen = SD_INODE_SIZE - sizeof(s->inode.data_vdi_id);
+ datalen = SD_INODE_HEADER_SIZE;
s->inode.vdi_size = offset;
ret = write_object(fd, s->bs, (char *)&s->inode,
vid_to_vdi_oid(s->inode.vdi_id), s->inode.nr_copies,
if (ret < 0) {
error_setg_errno(errp, -ret, "failed to update an inode");
+ return ret;
}
- return ret;
+ if (prealloc == PREALLOC_MODE_FULL) {
+ ret = sd_prealloc(bs, old_size, offset, errp);
+ if (ret < 0) {
+ return ret;
+ }
+ }
+
+ return 0;
}
/*
char *buf;
bool deleted;
- DPRINTF("%" PRIx32 " is snapshot.\n", s->inode.vdi_id);
+ trace_sheepdog_create_branch_snapshot(s->inode.vdi_id);
buf = g_malloc(SD_INODE_SIZE);
goto out;
}
- DPRINTF("%" PRIx32 " is created.\n", vid);
+ trace_sheepdog_create_branch_created(vid);
fd = connect_to_sdog(s, &local_err);
if (fd < 0) {
s->is_snapshot = false;
ret = 0;
- DPRINTF("%" PRIx32 " was newly created.\n", s->inode.vdi_id);
+ trace_sheepdog_create_branch_new(s->inode.vdi_id);
out:
g_free(buf);
}
if (create) {
- DPRINTF("update ino (%" PRIu32 ") %" PRIu64 " %" PRIu64 " %ld\n",
- inode->vdi_id, oid,
- vid_to_data_oid(inode->data_vdi_id[idx], idx), idx);
+ trace_sheepdog_co_rw_vector_update(inode->vdi_id, oid,
+ vid_to_data_oid(inode->data_vdi_id[idx], idx),
+ idx);
oid = vid_to_data_oid(inode->vdi_id, idx);
- DPRINTF("new oid %" PRIx64 "\n", oid);
+ trace_sheepdog_co_rw_vector_new(oid);
}
aio_req = alloc_aio_req(s, acb, oid, len, offset, flags, create,
}
static coroutine_fn int sd_co_writev(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, QEMUIOVector *qiov)
+ int nb_sectors, QEMUIOVector *qiov,
+ int flags)
{
SheepdogAIOCB acb;
int ret;
int64_t offset = (sector_num + nb_sectors) * BDRV_SECTOR_SIZE;
BDRVSheepdogState *s = bs->opaque;
+ assert(!flags);
if (offset > s->inode.vdi_size) {
- ret = sd_truncate(bs, offset, PREALLOC_MODE_OFF, NULL);
+ ret = sd_co_truncate(bs, offset, false, PREALLOC_MODE_OFF, 0, NULL);
if (ret < 0) {
return ret;
}
SheepdogInode *inode;
unsigned int datalen;
- DPRINTF("sn_info: name %s id_str %s s: name %s vm_state_size %" PRId64 " "
- "is_snapshot %d\n", sn_info->name, sn_info->id_str,
- s->name, sn_info->vm_state_size, s->is_snapshot);
+ trace_sheepdog_snapshot_create_info(sn_info->name, sn_info->id_str, s->name,
+ sn_info->vm_state_size, s->is_snapshot);
if (s->is_snapshot) {
error_report("You can't create a snapshot of a snapshot VDI, "
return -EINVAL;
}
- DPRINTF("%s %s\n", sn_info->name, sn_info->id_str);
+ trace_sheepdog_snapshot_create(sn_info->name, sn_info->id_str);
s->inode.vm_state_size = sn_info->vm_state_size;
s->inode.vm_clock_nsec = sn_info->vm_clock_nsec;
*/
strncpy(s->inode.tag, sn_info->name, sizeof(s->inode.tag));
/* we don't need to update entire object */
- datalen = SD_INODE_SIZE - sizeof(s->inode.data_vdi_id);
+ datalen = SD_INODE_HEADER_SIZE;
inode = g_malloc(datalen);
/* refresh inode. */
}
memcpy(&s->inode, inode, datalen);
- DPRINTF("s->inode: name %s snap_id %x oid %x\n",
- s->inode.name, s->inode.snap_id, s->inode.vdi_id);
+ trace_sheepdog_snapshot_create_inode(s->inode.name, s->inode.snap_id,
+ s->inode.vdi_id);
cleanup:
g_free(inode);
QEMUSnapshotInfo *sn_tab = NULL;
unsigned wlen, rlen;
int found = 0;
- static SheepdogInode inode;
+ SheepdogInode *inode;
unsigned long *vdi_inuse;
unsigned int start_nr;
uint64_t hval;
uint32_t vid;
vdi_inuse = g_malloc(max);
+ inode = g_malloc(SD_INODE_HEADER_SIZE);
fd = connect_to_sdog(s, &local_err);
if (fd < 0) {
}
/* we don't need to read entire object */
- ret = read_object(fd, s->bs, (char *)&inode,
+ ret = read_object(fd, s->bs, (char *)inode,
vid_to_vdi_oid(vid),
- 0, SD_INODE_SIZE - sizeof(inode.data_vdi_id), 0,
+ 0, SD_INODE_HEADER_SIZE, 0,
s->cache_flags);
if (ret) {
continue;
}
- if (!strcmp(inode.name, s->name) && is_snapshot(&inode)) {
- sn_tab[found].date_sec = inode.snap_ctime >> 32;
- sn_tab[found].date_nsec = inode.snap_ctime & 0xffffffff;
- sn_tab[found].vm_state_size = inode.vm_state_size;
- sn_tab[found].vm_clock_nsec = inode.vm_clock_nsec;
+ if (!strcmp(inode->name, s->name) && is_snapshot(inode)) {
+ sn_tab[found].date_sec = inode->snap_ctime >> 32;
+ sn_tab[found].date_nsec = inode->snap_ctime & 0xffffffff;
+ sn_tab[found].vm_state_size = inode->vm_state_size;
+ sn_tab[found].vm_clock_nsec = inode->vm_clock_nsec;
snprintf(sn_tab[found].id_str, sizeof(sn_tab[found].id_str),
- "%" PRIu32, inode.snap_id);
+ "%" PRIu32, inode->snap_id);
pstrcpy(sn_tab[found].name,
- MIN(sizeof(sn_tab[found].name), sizeof(inode.tag)),
- inode.tag);
+ MIN(sizeof(sn_tab[found].name), sizeof(inode->tag)),
+ inode->tag);
found++;
}
}
*psn_tab = sn_tab;
g_free(vdi_inuse);
+ g_free(inode);
if (ret < 0) {
return ret;
return acb.ret;
}
-static coroutine_fn int64_t
-sd_co_get_block_status(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
- int *pnum, BlockDriverState **file)
+static coroutine_fn int
+sd_co_block_status(BlockDriverState *bs, bool want_zero, int64_t offset,
+ int64_t bytes, int64_t *pnum, int64_t *map,
+ BlockDriverState **file)
{
BDRVSheepdogState *s = bs->opaque;
SheepdogInode *inode = &s->inode;
uint32_t object_size = (UINT32_C(1) << inode->block_size_shift);
- uint64_t offset = sector_num * BDRV_SECTOR_SIZE;
unsigned long start = offset / object_size,
- end = DIV_ROUND_UP((sector_num + nb_sectors) *
- BDRV_SECTOR_SIZE, object_size);
+ end = DIV_ROUND_UP(offset + bytes, object_size);
unsigned long idx;
- int64_t ret = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID | offset;
+ *map = offset;
+ int ret = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID;
for (idx = start; idx < end; idx++) {
if (inode->data_vdi_id[idx] == 0) {
}
}
- *pnum = (idx - start) * object_size / BDRV_SECTOR_SIZE;
- if (*pnum > nb_sectors) {
- *pnum = nb_sectors;
+ *pnum = (idx - start) * object_size;
+ if (*pnum > bytes) {
+ *pnum = bytes;
}
if (ret > 0 && ret & BDRV_BLOCK_OFFSET_VALID) {
*file = bs;
}
};
+static const char *const sd_strong_runtime_opts[] = {
+ "vdi",
+ "snap-id",
+ "tag",
+ "server.",
+
+ NULL
+};
+
static BlockDriver bdrv_sheepdog = {
- .format_name = "sheepdog",
- .protocol_name = "sheepdog",
- .instance_size = sizeof(BDRVSheepdogState),
- .bdrv_parse_filename = sd_parse_filename,
- .bdrv_file_open = sd_open,
- .bdrv_reopen_prepare = sd_reopen_prepare,
- .bdrv_reopen_commit = sd_reopen_commit,
- .bdrv_reopen_abort = sd_reopen_abort,
- .bdrv_close = sd_close,
- .bdrv_create = sd_create,
- .bdrv_has_zero_init = bdrv_has_zero_init_1,
- .bdrv_getlength = sd_getlength,
+ .format_name = "sheepdog",
+ .protocol_name = "sheepdog",
+ .instance_size = sizeof(BDRVSheepdogState),
+ .bdrv_parse_filename = sd_parse_filename,
+ .bdrv_file_open = sd_open,
+ .bdrv_reopen_prepare = sd_reopen_prepare,
+ .bdrv_reopen_commit = sd_reopen_commit,
+ .bdrv_reopen_abort = sd_reopen_abort,
+ .bdrv_close = sd_close,
+ .bdrv_co_create = sd_co_create,
+ .bdrv_co_create_opts = sd_co_create_opts,
+ .bdrv_has_zero_init = bdrv_has_zero_init_1,
+ .bdrv_has_zero_init_truncate = bdrv_has_zero_init_1,
+ .bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
- .bdrv_truncate = sd_truncate,
+ .bdrv_co_truncate = sd_co_truncate,
- .bdrv_co_readv = sd_co_readv,
- .bdrv_co_writev = sd_co_writev,
- .bdrv_co_flush_to_disk = sd_co_flush_to_disk,
- .bdrv_co_pdiscard = sd_co_pdiscard,
- .bdrv_co_get_block_status = sd_co_get_block_status,
+ .bdrv_co_readv = sd_co_readv,
+ .bdrv_co_writev = sd_co_writev,
+ .bdrv_co_flush_to_disk = sd_co_flush_to_disk,
+ .bdrv_co_pdiscard = sd_co_pdiscard,
+ .bdrv_co_block_status = sd_co_block_status,
- .bdrv_snapshot_create = sd_snapshot_create,
- .bdrv_snapshot_goto = sd_snapshot_goto,
- .bdrv_snapshot_delete = sd_snapshot_delete,
- .bdrv_snapshot_list = sd_snapshot_list,
+ .bdrv_snapshot_create = sd_snapshot_create,
+ .bdrv_snapshot_goto = sd_snapshot_goto,
+ .bdrv_snapshot_delete = sd_snapshot_delete,
+ .bdrv_snapshot_list = sd_snapshot_list,
- .bdrv_save_vmstate = sd_save_vmstate,
- .bdrv_load_vmstate = sd_load_vmstate,
+ .bdrv_save_vmstate = sd_save_vmstate,
+ .bdrv_load_vmstate = sd_load_vmstate,
- .bdrv_detach_aio_context = sd_detach_aio_context,
- .bdrv_attach_aio_context = sd_attach_aio_context,
+ .bdrv_detach_aio_context = sd_detach_aio_context,
+ .bdrv_attach_aio_context = sd_attach_aio_context,
- .create_opts = &sd_create_opts,
+ .create_opts = &sd_create_opts,
+ .strong_runtime_opts = sd_strong_runtime_opts,
};
static BlockDriver bdrv_sheepdog_tcp = {
- .format_name = "sheepdog",
- .protocol_name = "sheepdog+tcp",
- .instance_size = sizeof(BDRVSheepdogState),
- .bdrv_parse_filename = sd_parse_filename,
- .bdrv_file_open = sd_open,
- .bdrv_reopen_prepare = sd_reopen_prepare,
- .bdrv_reopen_commit = sd_reopen_commit,
- .bdrv_reopen_abort = sd_reopen_abort,
- .bdrv_close = sd_close,
- .bdrv_create = sd_create,
- .bdrv_has_zero_init = bdrv_has_zero_init_1,
- .bdrv_getlength = sd_getlength,
+ .format_name = "sheepdog",
+ .protocol_name = "sheepdog+tcp",
+ .instance_size = sizeof(BDRVSheepdogState),
+ .bdrv_parse_filename = sd_parse_filename,
+ .bdrv_file_open = sd_open,
+ .bdrv_reopen_prepare = sd_reopen_prepare,
+ .bdrv_reopen_commit = sd_reopen_commit,
+ .bdrv_reopen_abort = sd_reopen_abort,
+ .bdrv_close = sd_close,
+ .bdrv_co_create = sd_co_create,
+ .bdrv_co_create_opts = sd_co_create_opts,
+ .bdrv_has_zero_init = bdrv_has_zero_init_1,
+ .bdrv_has_zero_init_truncate = bdrv_has_zero_init_1,
+ .bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
- .bdrv_truncate = sd_truncate,
+ .bdrv_co_truncate = sd_co_truncate,
- .bdrv_co_readv = sd_co_readv,
- .bdrv_co_writev = sd_co_writev,
- .bdrv_co_flush_to_disk = sd_co_flush_to_disk,
- .bdrv_co_pdiscard = sd_co_pdiscard,
- .bdrv_co_get_block_status = sd_co_get_block_status,
+ .bdrv_co_readv = sd_co_readv,
+ .bdrv_co_writev = sd_co_writev,
+ .bdrv_co_flush_to_disk = sd_co_flush_to_disk,
+ .bdrv_co_pdiscard = sd_co_pdiscard,
+ .bdrv_co_block_status = sd_co_block_status,
- .bdrv_snapshot_create = sd_snapshot_create,
- .bdrv_snapshot_goto = sd_snapshot_goto,
- .bdrv_snapshot_delete = sd_snapshot_delete,
- .bdrv_snapshot_list = sd_snapshot_list,
+ .bdrv_snapshot_create = sd_snapshot_create,
+ .bdrv_snapshot_goto = sd_snapshot_goto,
+ .bdrv_snapshot_delete = sd_snapshot_delete,
+ .bdrv_snapshot_list = sd_snapshot_list,
- .bdrv_save_vmstate = sd_save_vmstate,
- .bdrv_load_vmstate = sd_load_vmstate,
+ .bdrv_save_vmstate = sd_save_vmstate,
+ .bdrv_load_vmstate = sd_load_vmstate,
- .bdrv_detach_aio_context = sd_detach_aio_context,
- .bdrv_attach_aio_context = sd_attach_aio_context,
+ .bdrv_detach_aio_context = sd_detach_aio_context,
+ .bdrv_attach_aio_context = sd_attach_aio_context,
- .create_opts = &sd_create_opts,
+ .create_opts = &sd_create_opts,
+ .strong_runtime_opts = sd_strong_runtime_opts,
};
static BlockDriver bdrv_sheepdog_unix = {
- .format_name = "sheepdog",
- .protocol_name = "sheepdog+unix",
- .instance_size = sizeof(BDRVSheepdogState),
- .bdrv_parse_filename = sd_parse_filename,
- .bdrv_file_open = sd_open,
- .bdrv_reopen_prepare = sd_reopen_prepare,
- .bdrv_reopen_commit = sd_reopen_commit,
- .bdrv_reopen_abort = sd_reopen_abort,
- .bdrv_close = sd_close,
- .bdrv_create = sd_create,
- .bdrv_has_zero_init = bdrv_has_zero_init_1,
- .bdrv_getlength = sd_getlength,
+ .format_name = "sheepdog",
+ .protocol_name = "sheepdog+unix",
+ .instance_size = sizeof(BDRVSheepdogState),
+ .bdrv_parse_filename = sd_parse_filename,
+ .bdrv_file_open = sd_open,
+ .bdrv_reopen_prepare = sd_reopen_prepare,
+ .bdrv_reopen_commit = sd_reopen_commit,
+ .bdrv_reopen_abort = sd_reopen_abort,
+ .bdrv_close = sd_close,
+ .bdrv_co_create = sd_co_create,
+ .bdrv_co_create_opts = sd_co_create_opts,
+ .bdrv_has_zero_init = bdrv_has_zero_init_1,
+ .bdrv_has_zero_init_truncate = bdrv_has_zero_init_1,
+ .bdrv_getlength = sd_getlength,
.bdrv_get_allocated_file_size = sd_get_allocated_file_size,
- .bdrv_truncate = sd_truncate,
+ .bdrv_co_truncate = sd_co_truncate,
- .bdrv_co_readv = sd_co_readv,
- .bdrv_co_writev = sd_co_writev,
- .bdrv_co_flush_to_disk = sd_co_flush_to_disk,
- .bdrv_co_pdiscard = sd_co_pdiscard,
- .bdrv_co_get_block_status = sd_co_get_block_status,
+ .bdrv_co_readv = sd_co_readv,
+ .bdrv_co_writev = sd_co_writev,
+ .bdrv_co_flush_to_disk = sd_co_flush_to_disk,
+ .bdrv_co_pdiscard = sd_co_pdiscard,
+ .bdrv_co_block_status = sd_co_block_status,
- .bdrv_snapshot_create = sd_snapshot_create,
- .bdrv_snapshot_goto = sd_snapshot_goto,
- .bdrv_snapshot_delete = sd_snapshot_delete,
- .bdrv_snapshot_list = sd_snapshot_list,
+ .bdrv_snapshot_create = sd_snapshot_create,
+ .bdrv_snapshot_goto = sd_snapshot_goto,
+ .bdrv_snapshot_delete = sd_snapshot_delete,
+ .bdrv_snapshot_list = sd_snapshot_list,
- .bdrv_save_vmstate = sd_save_vmstate,
- .bdrv_load_vmstate = sd_load_vmstate,
+ .bdrv_save_vmstate = sd_save_vmstate,
+ .bdrv_load_vmstate = sd_load_vmstate,
- .bdrv_detach_aio_context = sd_detach_aio_context,
- .bdrv_attach_aio_context = sd_attach_aio_context,
+ .bdrv_detach_aio_context = sd_detach_aio_context,
+ .bdrv_attach_aio_context = sd_attach_aio_context,
- .create_opts = &sd_create_opts,
+ .create_opts = &sd_create_opts,
+ .strong_runtime_opts = sd_strong_runtime_opts,
};
static void bdrv_sheepdog_init(void)
projects / mirror_qemu.git / blobdiff