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d763466edc
Implements QEMU support for vhost-user-blk together with live hotplug/unplug. Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com> Reviewed-by: Peter Krempa <pkrempa@redhat.com>
301 lines
10 KiB
C
301 lines
10 KiB
C
/*
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* qemu_block.h: helper functions for QEMU block subsystem
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "internal.h"
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#include "qemu_conf.h"
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#include "qemu_domain.h"
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#include "virhash.h"
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#include "virjson.h"
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#include "viruri.h"
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typedef struct qemuBlockNodeNameBackingChainData qemuBlockNodeNameBackingChainData;
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typedef qemuBlockNodeNameBackingChainData *qemuBlockNodeNameBackingChainDataPtr;
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struct qemuBlockNodeNameBackingChainData {
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char *qemufilename; /* name of the image from qemu */
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char *nodeformat; /* node name of the format layer */
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char *nodestorage; /* node name of the storage backing the format node */
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qemuBlockNodeNameBackingChainDataPtr backing;
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/* for testing purposes */
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char *drvformat;
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char *drvstorage;
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};
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GHashTable *
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qemuBlockNodeNameGetBackingChain(virJSONValuePtr namednodesdata,
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virJSONValuePtr blockstats);
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int
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qemuBlockNodeNamesDetect(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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qemuDomainAsyncJob asyncJob);
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GHashTable *
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qemuBlockGetNodeData(virJSONValuePtr data);
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bool
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qemuBlockStorageSourceSupportsConcurrentAccess(virStorageSourcePtr src);
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typedef enum {
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QEMU_BLOCK_STORAGE_SOURCE_BACKEND_PROPS_LEGACY = 1 << 0,
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QEMU_BLOCK_STORAGE_SOURCE_BACKEND_PROPS_TARGET_ONLY = 1 << 1,
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QEMU_BLOCK_STORAGE_SOURCE_BACKEND_PROPS_AUTO_READONLY = 1 << 2,
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QEMU_BLOCK_STORAGE_SOURCE_BACKEND_PROPS_SKIP_UNMAP = 1 << 3,
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} qemuBlockStorageSourceBackendPropsFlags;
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virJSONValuePtr
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qemuBlockStorageSourceGetBackendProps(virStorageSourcePtr src,
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unsigned int flags);
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virURIPtr
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qemuBlockStorageSourceGetURI(virStorageSourcePtr src);
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virJSONValuePtr
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qemuBlockStorageSourceGetBlockdevProps(virStorageSourcePtr src,
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virStorageSourcePtr backingStore);
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virJSONValuePtr
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qemuBlockStorageGetCopyOnReadProps(virDomainDiskDefPtr disk);
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typedef struct qemuBlockStorageSourceAttachData qemuBlockStorageSourceAttachData;
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typedef qemuBlockStorageSourceAttachData *qemuBlockStorageSourceAttachDataPtr;
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struct qemuBlockStorageSourceAttachData {
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virJSONValuePtr prmgrProps;
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char *prmgrAlias;
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virJSONValuePtr storageProps;
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const char *storageNodeName;
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bool storageAttached;
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virJSONValuePtr storageSliceProps;
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const char *storageSliceNodeName;
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bool storageSliceAttached;
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virJSONValuePtr formatProps;
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const char *formatNodeName;
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bool formatAttached;
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char *driveCmd;
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char *driveAlias;
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bool driveAdded;
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virDomainChrSourceDefPtr chardevDef;
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char *chardevAlias;
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char *chardevCmd;
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bool chardevAdded;
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virJSONValuePtr authsecretProps;
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char *authsecretAlias;
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virJSONValuePtr encryptsecretProps;
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char *encryptsecretAlias;
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virJSONValuePtr httpcookiesecretProps;
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char *httpcookiesecretAlias;
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virJSONValuePtr tlsProps;
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char *tlsAlias;
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virJSONValuePtr tlsKeySecretProps;
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char *tlsKeySecretAlias;
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};
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void
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qemuBlockStorageSourceAttachDataFree(qemuBlockStorageSourceAttachDataPtr data);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuBlockStorageSourceAttachData,
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qemuBlockStorageSourceAttachDataFree);
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qemuBlockStorageSourceAttachDataPtr
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qemuBlockStorageSourceAttachPrepareBlockdev(virStorageSourcePtr src,
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virStorageSourcePtr backingStore,
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bool autoreadonly);
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qemuBlockStorageSourceAttachDataPtr
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qemuBlockStorageSourceDetachPrepare(virStorageSourcePtr src,
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char *driveAlias);
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int
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qemuBlockStorageSourceAttachApply(qemuMonitorPtr mon,
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qemuBlockStorageSourceAttachDataPtr data);
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void
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qemuBlockStorageSourceAttachRollback(qemuMonitorPtr mon,
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qemuBlockStorageSourceAttachDataPtr data);
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int
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qemuBlockStorageSourceDetachOneBlockdev(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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qemuDomainAsyncJob asyncJob,
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virStorageSourcePtr src);
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struct _qemuBlockStorageSourceChainData {
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qemuBlockStorageSourceAttachDataPtr *srcdata;
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size_t nsrcdata;
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};
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typedef struct _qemuBlockStorageSourceChainData qemuBlockStorageSourceChainData;
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typedef qemuBlockStorageSourceChainData *qemuBlockStorageSourceChainDataPtr;
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void
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qemuBlockStorageSourceChainDataFree(qemuBlockStorageSourceChainDataPtr data);
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qemuBlockStorageSourceChainDataPtr
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qemuBlockStorageSourceChainDetachPrepareBlockdev(virStorageSourcePtr src);
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qemuBlockStorageSourceChainDataPtr
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qemuBlockStorageSourceChainDetachPrepareDrive(virStorageSourcePtr src,
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char *driveAlias);
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qemuBlockStorageSourceChainDataPtr
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qemuBlockStorageSourceChainDetachPrepareChardev(char *chardevAlias);
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int
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qemuBlockStorageSourceChainAttach(qemuMonitorPtr mon,
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qemuBlockStorageSourceChainDataPtr data);
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void
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qemuBlockStorageSourceChainDetach(qemuMonitorPtr mon,
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qemuBlockStorageSourceChainDataPtr data);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(qemuBlockStorageSourceChainData,
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qemuBlockStorageSourceChainDataFree);
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int
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qemuBlockSnapshotAddLegacy(virJSONValuePtr actions,
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virDomainDiskDefPtr disk,
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virStorageSourcePtr newsrc,
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bool reuse);
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int
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qemuBlockSnapshotAddBlockdev(virJSONValuePtr actions,
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virDomainDiskDefPtr disk,
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virStorageSourcePtr newsrc);
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char *
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qemuBlockGetBackingStoreString(virStorageSourcePtr src,
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bool pretty)
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ATTRIBUTE_NONNULL(1);
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int
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qemuBlockStorageSourceCreateGetFormatProps(virStorageSourcePtr src,
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virStorageSourcePtr backing,
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virJSONValuePtr *props)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3) G_GNUC_WARN_UNUSED_RESULT;
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int
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qemuBlockStorageSourceCreateGetStorageProps(virStorageSourcePtr src,
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virJSONValuePtr *props)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) G_GNUC_WARN_UNUSED_RESULT;
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int
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qemuBlockStorageSourceCreate(virDomainObjPtr vm,
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virStorageSourcePtr src,
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virStorageSourcePtr backingStore,
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virStorageSourcePtr chain,
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qemuBlockStorageSourceAttachDataPtr data,
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qemuDomainAsyncJob asyncJob);
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int
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qemuBlockStorageSourceCreateDetectSize(GHashTable *blockNamedNodeData,
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virStorageSourcePtr src,
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virStorageSourcePtr templ);
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int
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qemuBlockRemoveImageMetadata(virQEMUDriverPtr driver,
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virDomainObjPtr vm,
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const char *diskTarget,
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virStorageSourcePtr src);
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qemuBlockNamedNodeDataBitmapPtr
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qemuBlockNamedNodeDataGetBitmapByName(GHashTable *blockNamedNodeData,
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virStorageSourcePtr src,
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const char *bitmap);
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GHashTable *
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qemuBlockGetNamedNodeData(virDomainObjPtr vm,
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qemuDomainAsyncJob asyncJob);
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int
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qemuBlockGetBitmapMergeActions(virStorageSourcePtr topsrc,
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virStorageSourcePtr basesrc,
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virStorageSourcePtr target,
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const char *bitmapname,
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const char *dstbitmapname,
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virStorageSourcePtr writebitmapsrc,
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virJSONValuePtr *actions,
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GHashTable *blockNamedNodeData);
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bool
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qemuBlockBitmapChainIsValid(virStorageSourcePtr src,
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const char *bitmapname,
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GHashTable *blockNamedNodeData);
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int
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qemuBlockBitmapsHandleBlockcopy(virStorageSourcePtr src,
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virStorageSourcePtr mirror,
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GHashTable *blockNamedNodeData,
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bool shallow,
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virJSONValuePtr *actions);
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int
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qemuBlockBitmapsHandleCommitFinish(virStorageSourcePtr topsrc,
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virStorageSourcePtr basesrc,
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bool active,
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GHashTable *blockNamedNodeData,
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virJSONValuePtr *actions);
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int
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qemuBlockReopenReadWrite(virDomainObjPtr vm,
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virStorageSourcePtr src,
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qemuDomainAsyncJob asyncJob);
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int
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qemuBlockReopenReadOnly(virDomainObjPtr vm,
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virStorageSourcePtr src,
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qemuDomainAsyncJob asyncJob);
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bool
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qemuBlockStorageSourceNeedsStorageSliceLayer(const virStorageSource *src);
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char *
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qemuBlockStorageSourceGetCookieString(virStorageSourcePtr src);
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int
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qemuBlockUpdateRelativeBacking(virDomainObjPtr vm,
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virStorageSourcePtr src,
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virStorageSourcePtr topsrc);
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virJSONValuePtr
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qemuBlockExportGetNBDProps(const char *nodename,
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const char *exportname,
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bool writable,
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const char **bitmaps);
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int
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qemuBlockExportAddNBD(virDomainObjPtr vm,
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const char *drivealias,
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virStorageSourcePtr src,
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const char *exportname,
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bool writable,
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const char *bitmap);
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