diff options
| -rw-r--r-- | block/nbd-client.c | 3 | ||||
| -rw-r--r-- | block/nbd.c | 2 | ||||
| -rw-r--r-- | include/block/nbd.h | 53 | ||||
| -rw-r--r-- | nbd/client.c | 24 | ||||
| -rw-r--r-- | nbd/common.c | 10 | ||||
| -rw-r--r-- | nbd/server.c | 4 | ||||
| -rw-r--r-- | nbd/trace-events | 8 |
7 files changed, 72 insertions, 32 deletions
diff --git a/block/nbd-client.c b/block/nbd-client.c index 9206652e45..7b68499b76 100644 --- a/block/nbd-client.c +++ b/block/nbd-client.c @@ -846,9 +846,6 @@ int nbd_client_init(BlockDriverState *bs, if (client->info.flags & NBD_FLAG_SEND_WRITE_ZEROES) { bs->supported_zero_flags |= BDRV_REQ_MAY_UNMAP; } - if (client->info.min_block > bs->bl.request_alignment) { - bs->bl.request_alignment = client->info.min_block; - } qemu_co_mutex_init(&client->send_mutex); qemu_co_queue_init(&client->free_sema); diff --git a/block/nbd.c b/block/nbd.c index ef81a9f53b..69b5fd5e8f 100644 --- a/block/nbd.c +++ b/block/nbd.c @@ -474,8 +474,10 @@ static int nbd_co_flush(BlockDriverState *bs) static void nbd_refresh_limits(BlockDriverState *bs, Error **errp) { NBDClientSession *s = nbd_get_client_session(bs); + uint32_t min = s->info.min_block; uint32_t max = MIN_NON_ZERO(NBD_MAX_BUFFER_SIZE, s->info.max_block); + bs->bl.request_alignment = min ? min : BDRV_SECTOR_SIZE; bs->bl.max_pdiscard = max; bs->bl.max_pwrite_zeroes = max; bs->bl.max_transfer = max; diff --git a/include/block/nbd.h b/include/block/nbd.h index fc50003003..495564c73a 100644 --- a/include/block/nbd.h +++ b/include/block/nbd.h @@ -41,6 +41,12 @@ struct NBDOptionReply { } QEMU_PACKED; typedef struct NBDOptionReply NBDOptionReply; +typedef struct NBDOptionReplyMetaContext { + NBDOptionReply h; /* h.type = NBD_REP_META_CONTEXT, h.length > 4 */ + uint32_t context_id; + /* meta context name follows */ +} QEMU_PACKED NBDOptionReplyMetaContext; + /* Transmission phase structs * * Note: these are _NOT_ the same as the network representation of an NBD @@ -105,6 +111,19 @@ typedef struct NBDStructuredError { uint16_t message_length; } QEMU_PACKED NBDStructuredError; +/* Header of NBD_REPLY_TYPE_BLOCK_STATUS */ +typedef struct NBDStructuredMeta { + NBDStructuredReplyChunk h; /* h.length >= 12 (at least one extent) */ + uint32_t context_id; + /* extents follows */ +} QEMU_PACKED NBDStructuredMeta; + +/* Extent chunk for NBD_REPLY_TYPE_BLOCK_STATUS */ +typedef struct NBDExtent { + uint32_t length; + uint32_t flags; /* NBD_STATE_* */ +} QEMU_PACKED NBDExtent; + /* Transmission (export) flags: sent from server to client during handshake, but describe what will happen during transmission */ #define NBD_FLAG_HAS_FLAGS (1 << 0) /* Flags are there */ @@ -128,21 +147,24 @@ typedef struct NBDStructuredError { #define NBD_FLAG_C_NO_ZEROES (1 << 1) /* End handshake without zeroes. */ /* Option requests. */ -#define NBD_OPT_EXPORT_NAME (1) -#define NBD_OPT_ABORT (2) -#define NBD_OPT_LIST (3) -/* #define NBD_OPT_PEEK_EXPORT (4) not in use */ -#define NBD_OPT_STARTTLS (5) -#define NBD_OPT_INFO (6) -#define NBD_OPT_GO (7) -#define NBD_OPT_STRUCTURED_REPLY (8) +#define NBD_OPT_EXPORT_NAME (1) +#define NBD_OPT_ABORT (2) +#define NBD_OPT_LIST (3) +/* #define NBD_OPT_PEEK_EXPORT (4) not in use */ +#define NBD_OPT_STARTTLS (5) +#define NBD_OPT_INFO (6) +#define NBD_OPT_GO (7) +#define NBD_OPT_STRUCTURED_REPLY (8) +#define NBD_OPT_LIST_META_CONTEXT (9) +#define NBD_OPT_SET_META_CONTEXT (10) /* Option reply types. */ #define NBD_REP_ERR(value) ((UINT32_C(1) << 31) | (value)) -#define NBD_REP_ACK (1) /* Data sending finished. */ -#define NBD_REP_SERVER (2) /* Export description. */ -#define NBD_REP_INFO (3) /* NBD_OPT_INFO/GO. */ +#define NBD_REP_ACK (1) /* Data sending finished. */ +#define NBD_REP_SERVER (2) /* Export description. */ +#define NBD_REP_INFO (3) /* NBD_OPT_INFO/GO. */ +#define NBD_REP_META_CONTEXT (4) /* NBD_OPT_{LIST,SET}_META_CONTEXT */ #define NBD_REP_ERR_UNSUP NBD_REP_ERR(1) /* Unknown option */ #define NBD_REP_ERR_POLICY NBD_REP_ERR(2) /* Server denied */ @@ -163,6 +185,8 @@ typedef struct NBDStructuredError { #define NBD_CMD_FLAG_FUA (1 << 0) /* 'force unit access' during write */ #define NBD_CMD_FLAG_NO_HOLE (1 << 1) /* don't punch hole on zero run */ #define NBD_CMD_FLAG_DF (1 << 2) /* don't fragment structured read */ +#define NBD_CMD_FLAG_REQ_ONE (1 << 3) /* only one extent in BLOCK_STATUS + * reply chunk */ /* Supported request types */ enum { @@ -173,6 +197,7 @@ enum { NBD_CMD_TRIM = 4, /* 5 reserved for failed experiment NBD_CMD_CACHE */ NBD_CMD_WRITE_ZEROES = 6, + NBD_CMD_BLOCK_STATUS = 7, }; #define NBD_DEFAULT_PORT 10809 @@ -200,9 +225,15 @@ enum { #define NBD_REPLY_TYPE_NONE 0 #define NBD_REPLY_TYPE_OFFSET_DATA 1 #define NBD_REPLY_TYPE_OFFSET_HOLE 2 +#define NBD_REPLY_TYPE_BLOCK_STATUS 5 #define NBD_REPLY_TYPE_ERROR NBD_REPLY_ERR(1) #define NBD_REPLY_TYPE_ERROR_OFFSET NBD_REPLY_ERR(2) +/* Flags for extents (NBDExtent.flags) of NBD_REPLY_TYPE_BLOCK_STATUS, + * for base:allocation meta context */ +#define NBD_STATE_HOLE (1 << 0) +#define NBD_STATE_ZERO (1 << 1) + static inline bool nbd_reply_type_is_error(int type) { return type & (1 << 15); diff --git a/nbd/client.c b/nbd/client.c index 89f80f9590..9c3fe4aaa6 100644 --- a/nbd/client.c +++ b/nbd/client.c @@ -158,14 +158,14 @@ static int nbd_handle_reply_err(QIOChannel *ioc, NBDOptionReply *reply, if (reply->length) { if (reply->length > NBD_MAX_BUFFER_SIZE) { - error_setg(errp, "server error 0x%" PRIx32 + error_setg(errp, "server error %" PRIu32 " (%s) message is too long", reply->type, nbd_rep_lookup(reply->type)); goto cleanup; } msg = g_malloc(reply->length + 1); if (nbd_read(ioc, msg, reply->length, errp) < 0) { - error_prepend(errp, "failed to read option error 0x%" PRIx32 + error_prepend(errp, "failed to read option error %" PRIu32 " (%s) message: ", reply->type, nbd_rep_lookup(reply->type)); goto cleanup; @@ -180,22 +180,22 @@ static int nbd_handle_reply_err(QIOChannel *ioc, NBDOptionReply *reply, goto cleanup; case NBD_REP_ERR_POLICY: - error_setg(errp, "Denied by server for option %" PRIx32 " (%s)", + error_setg(errp, "Denied by server for option %" PRIu32 " (%s)", reply->option, nbd_opt_lookup(reply->option)); break; case NBD_REP_ERR_INVALID: - error_setg(errp, "Invalid data length for option %" PRIx32 " (%s)", + error_setg(errp, "Invalid parameters for option %" PRIu32 " (%s)", reply->option, nbd_opt_lookup(reply->option)); break; case NBD_REP_ERR_PLATFORM: - error_setg(errp, "Server lacks support for option %" PRIx32 " (%s)", + error_setg(errp, "Server lacks support for option %" PRIu32 " (%s)", reply->option, nbd_opt_lookup(reply->option)); break; case NBD_REP_ERR_TLS_REQD: - error_setg(errp, "TLS negotiation required before option %" PRIx32 + error_setg(errp, "TLS negotiation required before option %" PRIu32 " (%s)", reply->option, nbd_opt_lookup(reply->option)); break; @@ -204,17 +204,17 @@ static int nbd_handle_reply_err(QIOChannel *ioc, NBDOptionReply *reply, break; case NBD_REP_ERR_SHUTDOWN: - error_setg(errp, "Server shutting down before option %" PRIx32 " (%s)", + error_setg(errp, "Server shutting down before option %" PRIu32 " (%s)", reply->option, nbd_opt_lookup(reply->option)); break; case NBD_REP_ERR_BLOCK_SIZE_REQD: - error_setg(errp, "Server requires INFO_BLOCK_SIZE for option %" PRIx32 + error_setg(errp, "Server requires INFO_BLOCK_SIZE for option %" PRIu32 " (%s)", reply->option, nbd_opt_lookup(reply->option)); break; default: - error_setg(errp, "Unknown error code when asking for option %" PRIx32 + error_setg(errp, "Unknown error code when asking for option %" PRIu32 " (%s)", reply->option, nbd_opt_lookup(reply->option)); break; } @@ -378,8 +378,8 @@ static int nbd_opt_go(QIOChannel *ioc, const char *wantname, return 1; } if (reply.type != NBD_REP_INFO) { - error_setg(errp, "unexpected reply type %" PRIx32 - " (%s), expected %x", + error_setg(errp, "unexpected reply type %" PRIu32 + " (%s), expected %u", reply.type, nbd_rep_lookup(reply.type), NBD_REP_INFO); nbd_send_opt_abort(ioc); return -1; @@ -534,7 +534,7 @@ static int nbd_request_simple_option(QIOChannel *ioc, int opt, Error **errp) if (reply.type != NBD_REP_ACK) { error_setg(errp, "Server answered option %d (%s) with unexpected " - "reply %" PRIx32 " (%s)", opt, nbd_opt_lookup(opt), + "reply %" PRIu32 " (%s)", opt, nbd_opt_lookup(opt), reply.type, nbd_rep_lookup(reply.type)); nbd_send_opt_abort(ioc); return -1; diff --git a/nbd/common.c b/nbd/common.c index 6295526dd1..8c95c1d606 100644 --- a/nbd/common.c +++ b/nbd/common.c @@ -75,6 +75,10 @@ const char *nbd_opt_lookup(uint32_t opt) return "go"; case NBD_OPT_STRUCTURED_REPLY: return "structured reply"; + case NBD_OPT_LIST_META_CONTEXT: + return "list meta context"; + case NBD_OPT_SET_META_CONTEXT: + return "set meta context"; default: return "<unknown>"; } @@ -90,6 +94,8 @@ const char *nbd_rep_lookup(uint32_t rep) return "server"; case NBD_REP_INFO: return "info"; + case NBD_REP_META_CONTEXT: + return "meta context"; case NBD_REP_ERR_UNSUP: return "unsupported"; case NBD_REP_ERR_POLICY: @@ -144,6 +150,8 @@ const char *nbd_cmd_lookup(uint16_t cmd) return "trim"; case NBD_CMD_WRITE_ZEROES: return "write zeroes"; + case NBD_CMD_BLOCK_STATUS: + return "block status"; default: return "<unknown>"; } @@ -159,6 +167,8 @@ const char *nbd_reply_type_lookup(uint16_t type) return "data"; case NBD_REPLY_TYPE_OFFSET_HOLE: return "hole"; + case NBD_REPLY_TYPE_BLOCK_STATUS: + return "block status"; case NBD_REPLY_TYPE_ERROR: return "generic error"; case NBD_REPLY_TYPE_ERROR_OFFSET: diff --git a/nbd/server.c b/nbd/server.c index 112e3f69df..4990a5826e 100644 --- a/nbd/server.c +++ b/nbd/server.c @@ -806,7 +806,7 @@ static int nbd_negotiate_options(NBDClient *client, uint16_t myflags, default: ret = nbd_opt_drop(client, NBD_REP_ERR_UNSUP, errp, - "Unsupported option 0x%" PRIx32 " (%s)", + "Unsupported option %" PRIu32 " (%s)", option, nbd_opt_lookup(option)); break; } @@ -822,7 +822,7 @@ static int nbd_negotiate_options(NBDClient *client, uint16_t myflags, errp); default: - error_setg(errp, "Unsupported option 0x%" PRIx32 " (%s)", + error_setg(errp, "Unsupported option %" PRIu32 " (%s)", option, nbd_opt_lookup(option)); return -EINVAL; } diff --git a/nbd/trace-events b/nbd/trace-events index 2b8268ce8c..0d03edc967 100644 --- a/nbd/trace-events +++ b/nbd/trace-events @@ -1,7 +1,7 @@ # nbd/client.c nbd_send_option_request(uint32_t opt, const char *name, uint32_t len) "Sending option request %" PRIu32" (%s), len %" PRIu32 -nbd_receive_option_reply(uint32_t option, const char *optname, uint32_t type, const char *typename, uint32_t length) "Received option reply 0x%" PRIx32" (%s), type 0x%" PRIx32" (%s), len %" PRIu32 -nbd_reply_err_unsup(uint32_t option, const char *name) "server doesn't understand request 0x%" PRIx32 " (%s), attempting fallback" +nbd_receive_option_reply(uint32_t option, const char *optname, uint32_t type, const char *typename, uint32_t length) "Received option reply %" PRIu32" (%s), type %" PRIu32" (%s), len %" PRIu32 +nbd_reply_err_unsup(uint32_t option, const char *name) "server doesn't understand request %" PRIu32 " (%s), attempting fallback" nbd_opt_go_start(const char *name) "Attempting NBD_OPT_GO for export '%s'" nbd_opt_go_success(void) "Export is good to go" nbd_opt_go_info_unknown(int info, const char *name) "Ignoring unknown info %d (%s)" @@ -33,7 +33,7 @@ nbd_receive_structured_reply_chunk(uint16_t flags, uint16_t type, const char *na nbd_unknown_error(int err) "Squashing unexpected error %d to EINVAL" # nbd/server.c -nbd_negotiate_send_rep_len(uint32_t opt, const char *optname, uint32_t type, const char *typename, uint32_t len) "Reply opt=0x%" PRIx32 " (%s), type=0x%" PRIx32 " (%s), len=%" PRIu32 +nbd_negotiate_send_rep_len(uint32_t opt, const char *optname, uint32_t type, const char *typename, uint32_t len) "Reply opt=%" PRIu32 " (%s), type=%" PRIu32 " (%s), len=%" PRIu32 nbd_negotiate_send_rep_err(const char *msg) "sending error message \"%s\"" nbd_negotiate_send_rep_list(const char *name, const char *desc) "Advertising export name '%s' description '%s'" nbd_negotiate_handle_export_name(void) "Checking length" @@ -46,7 +46,7 @@ nbd_negotiate_handle_starttls(void) "Setting up TLS" nbd_negotiate_handle_starttls_handshake(void) "Starting TLS handshake" nbd_negotiate_options_flags(uint32_t flags) "Received client flags 0x%" PRIx32 nbd_negotiate_options_check_magic(uint64_t magic) "Checking opts magic 0x%" PRIx64 -nbd_negotiate_options_check_option(uint32_t option, const char *name) "Checking option 0x%" PRIx32 " (%s)" +nbd_negotiate_options_check_option(uint32_t option, const char *name) "Checking option %" PRIu32 " (%s)" nbd_negotiate_begin(void) "Beginning negotiation" nbd_negotiate_old_style(uint64_t size, unsigned flags) "advertising size %" PRIu64 " and flags 0x%x" nbd_negotiate_new_style_size_flags(uint64_t size, unsigned flags) "advertising size %" PRIu64 " and flags 0x%x" |