[libvirt] [PATCH 2/8] Add virDomain{Set, Get}BlockIoTune support to the remote driver

Support Block I/O Throttle setting and query to remote driver. Signed-off-by: Lei Li <lilei(a)linux.vnet.ibm.com&gt; Signed-off-by: Zhi Yong Wu <wuzhy(a)linux.vnet.ibm.com&gt; --- daemon/remote.c | 109 ++++++++++++++++++++++++++++++++++++++++++ src/remote/remote_driver.c | 96 +++++++++++++++++++++++++++++++++++++ src/remote/remote_protocol.x | 27 ++++++++++- src/remote_protocol-structs | 24 +++++++++ 4 files changed, 255 insertions(+), 1 deletions(-) diff --git a/daemon/remote.c b/daemon/remote.c index aa3f768..227d36e 100644 --- a/daemon/remote.c +++ b/daemon/remote.c @@ -1886,6 +1886,115 @@ cleanup: return rv; } +static int +remoteDispatchDomainSetBlockIoThrottle(virNetServerPtr server ATTRIBUTE_UNUSED, + virNetServerClientPtr client ATTRIBUTE_UNUSED, + virNetMessagePtr hdr ATTRIBUTE_UNUSED, + virNetMessageErrorPtr rerr, + remote_domain_set_block_io_throttle_args *args) +{ + virDomainPtr dom = NULL; + int rv = -1; + virTypedParameterPtr params = NULL; + int nparams; + struct daemonClientPrivate *priv = + virNetServerClientGetPrivateData(client); + + if (!priv->conn) { + virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("connection not open")); + goto cleanup; + } + + if (!(dom = get_nonnull_domain(priv->conn, args->dom))) + goto cleanup; + + if ((params = remoteDeserializeTypedParameters(args->params.params_val, + args->params.params_len, + REMOTE_DOMAIN_BLKIOTHROTTLE_PARAMETERS_MAX, + &nparams)) == NULL) + goto cleanup; + + rv = virDomainSetBlockIoTune(dom, args->disk, params, nparams, args->flags); + + if (rv < 0) + goto cleanup; + +cleanup: + if (rv < 0) + virNetMessageSaveError(rerr); + if (dom) + virDomainFree(dom); + return rv; +} + +static int +remoteDispatchDomainGetBlockIoThrottle(virNetServerPtr server ATTRIBUTE_UNUSED, + virNetServerClientPtr client ATTRIBUTE_UNUSED, + virNetMessagePtr hdr ATTRIBUTE_UNUSED, + virNetMessageErrorPtr rerr, + remote_domain_get_block_io_throttle_args *args, + remote_domain_get_block_io_throttle_ret *ret) +{ + virDomainPtr dom = NULL; + int rv = -1; + int i; + virTypedParameterPtr params; + int nparams = args->nparams; + struct daemonClientPrivate *priv = + virNetServerClientGetPrivateData(client); + + if (!priv->conn) { + virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("connection not open")); + goto cleanup; + } + + if (nparams > REMOTE_DOMAIN_BLKIOTHROTTLE_PARAMETERS_MAX) { + virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large")); + goto cleanup; + } + + if (VIR_ALLOC_N(params, nparams) < 0) { + virReportOOMError(); + goto cleanup; + } + + if (!(dom = get_nonnull_domain(priv->conn, args->dom))) + goto cleanup; + + if (virDomainGetBlockIoTune(dom, args->disk, params, &nparams, args->flags) < 0) + goto cleanup; + + /* In this case, we need to send back the number of parameters + * supported + */ + if (args->nparams == 0) { + ret->nparams = nparams; + goto success; + } + + /* Serialise the block I/O throttle. */ + if (remoteSerializeTypedParameters(params, nparams, + &ret->params.params_val, + &ret->params.params_len, + args->flags) < 0) + goto cleanup; + +success: + rv = 0; + +cleanup: + if (rv < 0) { + virNetMessageSaveError(rerr); + if (ret->params.params_val) { + for (i = 0; i < nparams; i++) + VIR_FREE(ret->params.params_val[i].field); + VIR_FREE(ret->params.params_val); + } + } + if (dom) + virDomainFree(dom); + return rv; +} /*-------------------------------------------------------------*/ diff --git a/src/remote/remote_driver.c b/src/remote/remote_driver.c index 94fd3e7..fa2d2c7 100644 --- a/src/remote/remote_driver.c +++ b/src/remote/remote_driver.c @@ -2178,6 +2178,100 @@ done: return rv; } +static int remoteDomainSetBlockIoTune(virDomainPtr domain, + const char *disk, + virTypedParameterPtr params, + int nparams, + unsigned int flags) +{ + int rv = -1; + remote_domain_set_block_io_throttle_args args; + struct private_data *priv = domain->conn->privateData; + + remoteDriverLock(priv); + + memset(&args, 0, sizeof(args)); + + make_nonnull_domain(&args.dom, domain); + args.disk = (char *)disk; + args.flags = flags; + + if (remoteSerializeTypedParameters(params, nparams, &args.params.params_val, &args.params.params_len) < 0) { + xdr_free((xdrproc_t)xdr_remote_domain_set_block_io_throttle_args, (char *)&args); + goto done; + } + + if (call(domain->conn, priv, 0, REMOTE_PROC_DOMAIN_SET_BLOCK_IO_THROTTLE, + (xdrproc_t) xdr_remote_domain_set_block_io_throttle_args, + (char *) &args, + (xdrproc_t) xdr_void, + (char *) NULL) == -1) { + goto done; + } + rv = 0; + +done: + remoteDriverUnlock(priv); + return rv; +} + +static int remoteDomainGetBlockIoTune(virDomainPtr domain, + const char *disk, + virTypedParameterPtr params, + int *nparams, + unsigned int flags) +{ + int rv = -1; + remote_domain_get_block_io_throttle_args args; + remote_domain_get_block_io_throttle_ret ret; + struct private_data *priv = domain->conn->privateData; + + remoteDriverLock(priv); + + make_nonnull_domain(&args.dom, domain); + args.disk = (char *)disk; + args.nparams = *nparams; + args.flags = flags; + + memset(&ret, 0, sizeof(ret)); + + + if (call(domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_BLOCK_IO_THROTTLE, + (xdrproc_t) xdr_remote_domain_get_block_io_throttle_args, + (char *) &args, + (xdrproc_t) xdr_remote_domain_get_block_io_throttle_ret, + (char *) &ret) == -1) { + goto done; + } + + /* Handle the case when the caller does not know the number of parameters + * and is asking for the number of parameters supported + */ + if (*nparams == 0) { + *nparams = ret.nparams; + rv = 0; + goto cleanup; + } + + if (remoteDeserializeTypedParameters(ret.params.params_val, + ret.params.params_len, + REMOTE_DOMAIN_MEMORY_PARAMETERS_MAX, + params, + nparams) < 0) + goto cleanup; + + rv = 0; + +cleanup: + xdr_free ((xdrproc_t) xdr_remote_domain_get_block_io_throttle_ret, + (char *) &ret); + rv = 0; + +done: + remoteDriverUnlock(priv); + return rv; +} + /*----------------------------------------------------------------------*/ static virDrvOpenStatus ATTRIBUTE_NONNULL (1) @@ -4550,6 +4644,8 @@ static virDriver remote_driver = { .domainGetBlockJobInfo = remoteDomainGetBlockJobInfo, /* 0.9.4 */ .domainBlockJobSetSpeed = remoteDomainBlockJobSetSpeed, /* 0.9.4 */ .domainBlockPull = remoteDomainBlockPull, /* 0.9.4 */ + .domainSetBlockIoTune = remoteDomainSetBlockIoTune, /* 0.9.8 */ + .domainGetBlockIoTune = remoteDomainGetBlockIoTune, /* 0.9.8 */ }; static virNetworkDriver network_driver = { diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x index 5ea1114..9ab3314 100644 --- a/src/remote/remote_protocol.x +++ b/src/remote/remote_protocol.x @@ -125,6 +125,9 @@ const REMOTE_DOMAIN_BLKIO_PARAMETERS_MAX = 16; /* Upper limit on list of memory parameters. */ const REMOTE_DOMAIN_MEMORY_PARAMETERS_MAX = 16; +/* Upper limit on list of blockio throttle parameters. */ +const REMOTE_DOMAIN_BLKIOTHROTTLE_PARAMETERS_MAX = 16; + /* Upper limit on list of node cpu stats. */ const REMOTE_NODE_CPU_STATS_MAX = 16; @@ -1075,6 +1078,25 @@ struct remote_domain_block_pull_args { unsigned int flags; }; +struct remote_domain_set_block_io_throttle_args { + remote_nonnull_domain dom; + remote_nonnull_string disk; + remote_typed_param params<REMOTE_DOMAIN_BLKIOTHROTTLE_PARAMETERS_MAX>; + unsigned int flags; +}; + +struct remote_domain_get_block_io_throttle_args { + remote_nonnull_domain dom; + remote_nonnull_string disk; + int nparams; + unsigned int flags; +}; + +struct remote_domain_get_block_io_throttle_ret { + remote_typed_param params<REMOTE_DOMAIN_BLKIOTHROTTLE_PARAMETERS_MAX>; + int nparams; +}; + /* Network calls: */ struct remote_num_of_networks_ret { @@ -2564,7 +2586,10 @@ enum remote_procedure { REMOTE_PROC_DOMAIN_SNAPSHOT_NUM_CHILDREN = 246, /* autogen autogen priority:high */ REMOTE_PROC_DOMAIN_SNAPSHOT_LIST_CHILDREN_NAMES = 247, /* autogen autogen priority:high */ REMOTE_PROC_DOMAIN_EVENT_DISK_CHANGE = 248, /* skipgen skipgen */ - REMOTE_PROC_DOMAIN_OPEN_GRAPHICS = 249 /* skipgen skipgen */ + REMOTE_PROC_DOMAIN_OPEN_GRAPHICS = 249, /* skipgen skipgen */ + REMOTE_PROC_DOMAIN_SET_BLOCK_IO_THROTTLE = 250, /* skipgen skipgen */ + REMOTE_PROC_DOMAIN_GET_BLOCK_IO_THROTTLE = 251 /* skipgen skipgen */ + /* * Notice how the entries are grouped in sets of 10 ? diff --git a/src/remote_protocol-structs b/src/remote_protocol-structs index b460b77..eabf5e5 100644 --- a/src/remote_protocol-structs +++ b/src/remote_protocol-structs @@ -759,6 +759,28 @@ struct remote_domain_block_pull_args { uint64_t bandwidth; u_int flags; }; +struct remote_domain_set_block_io_throttle_args { + remote_nonnull_domain dom; + remote_nonnull_string disk; + struct { + u_int params_len; + remote_typed_param * params_val; + } params; + u_int flags; +}; +struct remote_domain_get_block_io_throttle_args { + remote_nonnull_domain dom; + remote_nonnull_string disk; + int nparams; + u_int flags; +}; +struct remote_domain_get_block_io_throttle_ret { + struct { + u_int params_len; + remote_typed_param * params_val; + } params; + int nparams; +}; struct remote_num_of_networks_ret { int num; }; @@ -2007,4 +2029,6 @@ enum remote_procedure { REMOTE_PROC_DOMAIN_SNAPSHOT_LIST_CHILDREN_NAMES = 247, REMOTE_PROC_DOMAIN_EVENT_DISK_CHANGE = 248, REMOTE_PROC_DOMAIN_OPEN_GRAPHICS = 249, + REMOTE_PROC_DOMAIN_SET_BLOCK_IO_THROTTLE = 250, + REMOTE_PROC_DOMAIN_GET_BLOCK_IO_THROTTLE = 251, }; -- 1.7.1