For the save direction, this helper listens on a unix socket which QEMU connects to for multifd migration to files. For the restore direction, this helper connects to a unix socket QEMU listens at for multifd migration from files. The file descriptors are passed as command line parameters. Signed-off-by: Claudio Fontana <cfontana@suse.de> --- po/POTFILES.in | 1 + src/libvirt_private.syms | 1 + src/util/meson.build | 16 +++ src/util/multifd-helper.c | 249 ++++++++++++++++++++++++++++++++++++++ src/util/virthread.c | 5 + src/util/virthread.h | 1 + 6 files changed, 273 insertions(+) create mode 100644 src/util/multifd-helper.c diff --git a/po/POTFILES.in b/po/POTFILES.in index 0d9adb0758..4efb330262 100644 --- a/po/POTFILES.in +++ b/po/POTFILES.in @@ -241,6 +241,7 @@ @SRCDIR@src/storage_file/storage_source_backingstore.c @SRCDIR@src/test/test_driver.c @SRCDIR@src/util/iohelper.c +@SRCDIR@src/util/multifd-helper.c @SRCDIR@src/util/viralloc.c @SRCDIR@src/util/virarptable.c @SRCDIR@src/util/viraudit.c diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 97bfca906b..5f2bee985e 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -3427,6 +3427,7 @@ virThreadCreateFull; virThreadID; virThreadIsSelf; virThreadJoin; +virThreadJoinRet; virThreadMaxName; virThreadSelf; virThreadSelfID; diff --git a/src/util/meson.build b/src/util/meson.build index 17755373c8..337e454137 100644 --- a/src/util/meson.build +++ b/src/util/meson.build @@ -178,6 +178,11 @@ io_helper_sources = [ 'virfile.c', ] +multifd_helper_sources = [ + 'multifd-helper.c', + 'virfile.c', +] + virt_util_lib = static_library( 'virt_util', [ @@ -219,6 +224,17 @@ if conf.has('WITH_LIBVIRTD') libutil_dep, ], } + virt_helpers += { + 'name': 'libvirt_multifd_helper', + 'sources': [ + files(multifd_helper_sources), + dtrace_gen_headers, + ], + 'deps': [ + acl_dep, + libutil_dep, + ], + } endif util_inc_dir = include_directories('.') diff --git a/src/util/multifd-helper.c b/src/util/multifd-helper.c new file mode 100644 index 0000000000..59657578e2 --- /dev/null +++ b/src/util/multifd-helper.c @@ -0,0 +1,249 @@ +/* + * multifd-helper.c: listens on Unix socket to perform I/O to multiple files + * + * Copyright (C) 2022 SUSE LLC + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see + * <http://www.gnu.org/licenses/>. + * + * This has been written to support QEMU multifd migration to file, + * allowing better use of cpu resources to speed up the save/restore. + */ + +#include <config.h> + +#include <unistd.h> +#include <fcntl.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/un.h> + +#include "virthread.h" +#include "virfile.h" +#include "virerror.h" +#include "virstring.h" +#include "virgettext.h" + +#define VIR_FROM_THIS VIR_FROM_STORAGE + +typedef struct _multiFdConnData multiFdConnData; +struct _multiFdConnData { + int clientfd; + int filefd; + int oflags; + const char *path; + virThread tid; + + off_t total; +}; + +typedef struct _multiFdThreadArgs multiFdThreadArgs; +struct _multiFdThreadArgs { + int nchannels; + multiFdConnData *conn; /* contains main fd + nchannels */ + const char *sun_path; /* unix socket name to use for the server */ + struct sockaddr_un serv_addr; + + off_t total; +}; + +static void clientThreadFunc(void *a) +{ + multiFdConnData *c = a; + c->total = virFileDiskCopy(c->filefd, c->path, c->clientfd, "socket"); +} + +static off_t waitClientThreads(multiFdConnData *conn, int n) +{ + int idx; + off_t total = 0; + for (idx = 0; idx < n; idx++) { + multiFdConnData *c = &conn[idx]; + if (virThreadJoinRet(&c->tid) < 0) { + total = -1; + } else if (total >= 0) { + total += c->total; + } + if (VIR_CLOSE(c->clientfd) < 0) { + total = -1; + } + } + return total; +} + +static void loadThreadFunc(void *a) +{ + multiFdThreadArgs *args = a; + int idx; + args->total = -1; + + for (idx = 0; idx < args->nchannels + 1; idx++) { + /* Perform outgoing connections */ + multiFdConnData *c = &args->conn[idx]; + c->clientfd = socket(AF_UNIX, SOCK_STREAM, 0); + if (c->clientfd < 0) { + virReportSystemError(errno, "%s", _("loadThread: socket() failed")); + goto cleanup; + } + if (connect(c->clientfd, (const struct sockaddr *)&args->serv_addr, + sizeof(struct sockaddr_un)) < 0) { + virReportSystemError(errno, "%s", _("loadThread: connect() failed")); + goto cleanup; + } + if (virThreadCreate(&c->tid, true, &clientThreadFunc, c) < 0) { + virReportSystemError(errno, "%s", _("loadThread: client thread creation failed")); + goto cleanup; + } + } + args->total = waitClientThreads(args->conn, args->nchannels + 1); + + cleanup: + for (idx = 0; idx < args->nchannels + 1; idx++) { + multiFdConnData *c = &args->conn[idx]; + VIR_FORCE_CLOSE(c->clientfd); + } +} + +static void saveThreadFunc(void *a) +{ + multiFdThreadArgs *args = a; + int idx; + const char buf[1] = {'R'}; + int sockfd; + + if ((sockfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) { + virReportSystemError(errno, "%s", _("saveThread: socket() failed")); + return; + } + unlink(args->sun_path); + if (bind(sockfd, (struct sockaddr *)&args->serv_addr, sizeof(args->serv_addr)) < 0) { + virReportSystemError(errno, "%s", _("saveThread: bind() failed")); + goto cleanup; + } + if (listen(sockfd, args->nchannels + 1) < 0) { + virReportSystemError(errno, "%s", _("saveThread: listen() failed")); + goto cleanup; + } + + /* signal that the server is ready */ + if (safewrite(STDOUT_FILENO, &buf, 1) != 1) { + virReportSystemError(errno, "%s", _("saveThread: safewrite failed")); + goto cleanup; + } + + for (idx = 0; idx < args->nchannels + 1; idx++) { + /* Wait for incoming connection. */ + multiFdConnData *c = &args->conn[idx]; + if ((c->clientfd = accept(sockfd, NULL, NULL)) < 0) { + virReportSystemError(errno, "%s", _("saveThread: accept() failed")); + goto cleanup; + } + if (virThreadCreate(&c->tid, true, &clientThreadFunc, c) < 0) { + virReportSystemError(errno, "%s", _("saveThread: client thread creation failed")); + goto cleanup; + } + } + + args->total = waitClientThreads(args->conn, args->nchannels + 1); + + cleanup: + for (idx = 0; idx < args->nchannels + 1; idx++) { + multiFdConnData *c = &args->conn[idx]; + VIR_FORCE_CLOSE(c->clientfd); + } + if (VIR_CLOSE(sockfd) < 0) + args->total = -1; +} + +static const char *program_name; + +G_GNUC_NORETURN static void +usage(int status) +{ + if (status) { + fprintf(stderr, _("%s: try --help for more details"), program_name); + } else { + fprintf(stderr, _("Usage: %s UNIX_SOCNAME N MAINFD FD0 FD1 ... FDn"), program_name); + } + exit(status); +} + +int +main(int argc, char **argv) +{ + virThread tid; + virThreadFunc func = saveThreadFunc; + multiFdThreadArgs args = { 0 }; + int idx; + + /* sleep(10); */ + + program_name = argv[0]; + + if (virGettextInitialize() < 0 || + virErrorInitialize() < 0) { + fprintf(stderr, _("%s: initialization failed"), program_name); + exit(EXIT_FAILURE); + } + + if (argc > 1 && STREQ(argv[1], "--help")) + usage(EXIT_SUCCESS); + if (argc < 4) + usage(EXIT_FAILURE); + + args.sun_path = argv[1]; + if (virStrToLong_i(argv[2], NULL, 10, &args.nchannels) < 0) + fprintf(stderr, _("%s: malformed number of channels N %s"), program_name, argv[2]); + + if (argc < 4 + args.nchannels) + usage(EXIT_FAILURE); + + args.conn = g_new0(multiFdConnData, args.nchannels + 1); + + for (idx = 3; idx < 3 + args.nchannels + 1; idx++) { + multiFdConnData *c = &args.conn[idx - 3]; + + if (virStrToLong_i(argv[idx], NULL, 10, &c->filefd) < 0) { + fprintf(stderr, _("%s: malformed FD %s"), program_name, argv[idx]); + usage(EXIT_FAILURE); + } +#ifndef F_GETFL +#error "multifd-helper requires F_GETFL parameter of fcntl" +#endif + c->oflags = fcntl(c->filefd, F_GETFL); + if ((c->oflags & O_ACCMODE) == O_RDONLY) { + func = loadThreadFunc; + } + } + + /* initialize server address structure */ + memset(&args.serv_addr, 0, sizeof(args.serv_addr)); + args.serv_addr.sun_family = AF_UNIX; + virStrcpyStatic(args.serv_addr.sun_path, args.sun_path); + + if (virThreadCreate(&tid, true, func, &args) < 0) { + virReportSystemError(errno, _("%s: failed to create server thread"), program_name); + exit(EXIT_FAILURE); + } + + if (virThreadJoinRet(&tid) < 0) + exit(EXIT_FAILURE); + + if (args.total < 0) + exit(EXIT_FAILURE); + + exit(EXIT_SUCCESS); +} diff --git a/src/util/virthread.c b/src/util/virthread.c index 5422bb74fd..0f6c6a68fa 100644 --- a/src/util/virthread.c +++ b/src/util/virthread.c @@ -348,6 +348,11 @@ void virThreadJoin(virThread *thread) pthread_join(thread->thread, NULL); } +int virThreadJoinRet(virThread *thread) +{ + return pthread_join(thread->thread, NULL); +} + void virThreadCancel(virThread *thread) { pthread_cancel(thread->thread); diff --git a/src/util/virthread.h b/src/util/virthread.h index 23abe0b6c9..5cecb9bd8a 100644 --- a/src/util/virthread.h +++ b/src/util/virthread.h @@ -89,6 +89,7 @@ int virThreadCreateFull(virThread *thread, void virThreadSelf(virThread *thread); bool virThreadIsSelf(virThread *thread); void virThreadJoin(virThread *thread); +int virThreadJoinRet(virThread *thread); size_t virThreadMaxName(void); -- 2.35.3

Signed-off-by: Claudio Fontana <cfontana@suse.de> --- tools/virsh-domain.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index a3b0749fa9..2d90fba9b7 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -5316,15 +5316,21 @@ static bool cmdRestore(vshControl *ctl, const vshCmd *cmd) { const char *from = NULL; + virTypedParameterPtr params = NULL; + int nparams = 0; + int maxparams = 0; unsigned int flags = 0; const char *xmlfile = NULL; g_autofree char *xml = NULL; virshControl *priv = ctl->privData; - int rc; - - if (vshCommandOptStringReq(ctl, cmd, "file", &from) < 0) - return false; + int rc = -1; + if (vshCommandOptStringReq(ctl, cmd, "file", &from) < 0) { + goto out; + } else if (virTypedParamsAddString(¶ms, &nparams, &maxparams, + VIR_SAVE_PARAM_FILE, from) < 0) { + goto out; + } if (vshCommandOptBool(cmd, "bypass-cache")) flags |= VIR_DOMAIN_SAVE_BYPASS_CACHE; if (vshCommandOptBool(cmd, "running")) @@ -5335,11 +5341,15 @@ cmdRestore(vshControl *ctl, const vshCmd *cmd) flags |= VIR_DOMAIN_SAVE_RESET_NVRAM; if (vshCommandOptStringReq(ctl, cmd, "xml", &xmlfile) < 0) - return false; + goto out; - if (xmlfile && - virFileReadAll(xmlfile, VSH_MAX_XML_FILE, &xml) < 0) - return false; + if (xmlfile) { + if (virFileReadAll(xmlfile, VSH_MAX_XML_FILE, &xml) < 0) + goto out; + else if (virTypedParamsAddString(¶ms, &nparams, &maxparams, + VIR_SAVE_PARAM_DXML, xml) < 0) + goto out; + } if (flags || xml) { rc = virDomainRestoreFlags(priv->conn, from, xml, flags); @@ -5349,11 +5359,13 @@ cmdRestore(vshControl *ctl, const vshCmd *cmd) if (rc < 0) { vshError(ctl, _("Failed to restore domain from %s"), from); - return false; + goto out; } vshPrintExtra(ctl, _("Domain restored from %s\n"), from); - return true; + out: + virTypedParamsFree(params, nparams); + return rc >= 0; } /* -- 2.35.3

and its companion param VIR_SAVE_PARAM_PARALLEL_CONNECTIONS Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_driver.c | 17 +++++++++++------ src/qemu/qemu_saveimage.c | 1 + src/qemu/qemu_saveimage.h | 1 + src/qemu/qemu_snapshot.c | 2 +- 4 files changed, 14 insertions(+), 7 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index e3582f62a7..78cc0cef4f 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -2641,7 +2641,7 @@ static int qemuDomainSaveInternal(virQEMUDriver *driver, virDomainObj *vm, const char *path, int compressed, virCommand *compressor, - const char *xmlin, unsigned int flags) + const char *xmlin, int nconn, unsigned int flags) { g_autofree char *xml = NULL; bool was_running = false; @@ -2722,7 +2722,7 @@ qemuDomainSaveInternal(virQEMUDriver *driver, xml = NULL; ret = qemuSaveImageCreate(driver, vm, path, data, compressor, - flags, VIR_ASYNC_JOB_SAVE); + nconn, flags, VIR_ASYNC_JOB_SAVE); if (ret < 0) goto endjob; @@ -2791,7 +2791,7 @@ qemuDomainSaveFlags(virDomainPtr dom, const char *path, const char *dxml, goto cleanup; ret = qemuDomainSaveInternal(driver, vm, path, compressed, - compressor, dxml, flags); + compressor, dxml, -1, flags); cleanup: virDomainObjEndAPI(&vm); @@ -2815,16 +2815,19 @@ qemuDomainSaveParams(virDomainPtr dom, int compressed; g_autoptr(virCommand) compressor = NULL; int ret = -1; + int nconn = 2; virDomainObj *vm = NULL; g_autoptr(virQEMUDriverConfig) cfg = NULL; virCheckFlags(VIR_DOMAIN_SAVE_BYPASS_CACHE | VIR_DOMAIN_SAVE_RUNNING | - VIR_DOMAIN_SAVE_PAUSED, -1); + VIR_DOMAIN_SAVE_PAUSED | + VIR_DOMAIN_SAVE_PARALLEL, -1); if (virTypedParamsValidate(params, nparams, VIR_SAVE_PARAM_FILE, VIR_TYPED_PARAM_STRING, VIR_SAVE_PARAM_DXML, VIR_TYPED_PARAM_STRING, + VIR_SAVE_PARAM_PARALLEL_CONNECTIONS, VIR_TYPED_PARAM_INT, NULL) < 0) return -1; @@ -2832,6 +2835,8 @@ qemuDomainSaveParams(virDomainPtr dom, return -1; if (virTypedParamsGetString(params, nparams, VIR_SAVE_PARAM_DXML, &dxml) < 0) return -1; + if (virTypedParamsGetInt(params, nparams, VIR_SAVE_PARAM_PARALLEL_CONNECTIONS, &nconn) < 0) + return -1; cfg = virQEMUDriverGetConfig(driver); if ((compressed = qemuSaveImageGetCompressionProgram(cfg->saveImageFormat, @@ -2849,7 +2854,7 @@ qemuDomainSaveParams(virDomainPtr dom, goto cleanup; ret = qemuDomainSaveInternal(driver, vm, to, compressed, - compressor, dxml, flags); + compressor, dxml, nconn, flags); cleanup: virDomainObjEndAPI(&vm); @@ -2906,7 +2911,7 @@ qemuDomainManagedSave(virDomainPtr dom, unsigned int flags) VIR_INFO("Saving state of domain '%s' to '%s'", vm->def->name, name); ret = qemuDomainSaveInternal(driver, vm, name, compressed, - compressor, NULL, flags); + compressor, NULL, -1, flags); if (ret == 0) vm->hasManagedSave = true; diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index 4fd4c5cfcd..7c76db359e 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -258,6 +258,7 @@ qemuSaveImageCreate(virQEMUDriver *driver, const char *path, virQEMUSaveData *data, virCommand *compressor, + int nconn G_GNUC_UNUSED, unsigned int flags, virDomainAsyncJob asyncJob) { diff --git a/src/qemu/qemu_saveimage.h b/src/qemu/qemu_saveimage.h index 391cd55ed0..b3d5c02fd6 100644 --- a/src/qemu/qemu_saveimage.h +++ b/src/qemu/qemu_saveimage.h @@ -96,6 +96,7 @@ qemuSaveImageCreate(virQEMUDriver *driver, const char *path, virQEMUSaveData *data, virCommand *compressor, + int nconn, unsigned int flags, virDomainAsyncJob asyncJob); diff --git a/src/qemu/qemu_snapshot.c b/src/qemu/qemu_snapshot.c index b62fab7bb3..2e445e8296 100644 --- a/src/qemu/qemu_snapshot.c +++ b/src/qemu/qemu_snapshot.c @@ -1457,7 +1457,7 @@ qemuSnapshotCreateActiveExternal(virQEMUDriver *driver, memory_existing = virFileExists(snapdef->memorysnapshotfile); if ((ret = qemuSaveImageCreate(driver, vm, snapdef->memorysnapshotfile, - data, compressor, 0, + data, compressor, -1, 0, VIR_ASYNC_JOB_SNAPSHOT)) < 0) goto cleanup; -- 2.35.3

use this data type to encapsulate the pathname, file descriptor, wrapper, and need to unlink. This will make management of the resources associated with an FD used for QEMU save/restore much easier, reducing the amount of explicit cleanup required. Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_saveimage.c | 117 ++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_saveimage.h | 18 ++++++ 2 files changed, 135 insertions(+) diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index 7c76db359e..67c93e3865 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -248,6 +248,123 @@ qemuSaveImageGetCompressionCommand(virQEMUSaveFormat compression) return ret; } +/* + * virQEMUSaveFdInit: initialize a virQEMUSaveFd + * + * @saveFd: the structure to initialize + * @base: the main file name + * @idx: 0 for the main file, >0 for multifd channels. + * @oflags the file descriptor open flags + * @cfg: the driver config + * + * Returns -1 on error, 0 on success, + * and in both cases virQEMUSaveFdFini must be called to free resources. + */ +int virQEMUSaveFdInit(virQEMUSaveFd *saveFd, const char *base, int idx, + int oflags, virQEMUDriverConfig *cfg) +{ + unsigned int wrapperFlags = VIR_FILE_WRAPPER_NON_BLOCKING; + bool isCreat = oflags & O_CREAT; + bool isDirect = O_DIRECT && (oflags & O_DIRECT); + + if (isDirect) + wrapperFlags |= VIR_FILE_WRAPPER_BYPASS_CACHE; + if (idx > 0) { + saveFd->path = g_strdup_printf("%s.%d", base, idx); + } else { + saveFd->path = g_strdup(base); + } + saveFd->wrapper = NULL; + if (isCreat) { + saveFd->fd = virQEMUFileOpenAs(cfg->user, cfg->group, false, saveFd->path, + oflags, &saveFd->need_unlink); + } else { + saveFd->fd = qemuDomainOpenFile(cfg, NULL, saveFd->path, oflags, NULL); + } + if (saveFd->fd < 0) + return -1; + /* + * no wrapper required for the multifd channels. + * For O_CREAT, we always add the wrapper for the main file. + * For !O_CREAT, we only add the wrapper if using O_DIRECT. + */ + if (idx == 0 && (isDirect || isCreat)) { + saveFd->wrapper = virFileWrapperFdNew(&saveFd->fd, saveFd->path, wrapperFlags); + if (!saveFd->wrapper) + return -1; + } + return 0; +} + +/* + * virQEMUSaveFdClose: close a virQEMUSaveFd descriptor with normal close. + * + * @saveFd: the saveFd structure with the file descriptors to close. + * @vm: the virDomainObj (necessary to release lock), or NULL. + * + * If saveFd is NULL, the function will return success. + * + * Returns -1 on error, 0 on success. + */ +int virQEMUSaveFdClose(virQEMUSaveFd *saveFd, virDomainObj *vm) +{ + if (!saveFd) + return 0; + + if (VIR_CLOSE(saveFd->fd) < 0) { + virReportSystemError(errno, _("unable to close %s"), saveFd->path); + return -1; + } + if (vm) { + if (qemuDomainFileWrapperFDClose(vm, saveFd->wrapper) < 0) + return -1; + } else { + if (virFileWrapperFdClose(saveFd->wrapper) < 0) + return -1; + } + return 0; +} + +/* + * virQEMUSaveFdFini: finalize a virQEMUSaveFd + * + * @saveFd: the saveFd structure containing the resources to free. + * @vm: the virDomainObj (necessary to release lock for long close ops), or NULL. + * @ret: the current operation result (< 0 is failure) + * + * If saveFd is NULL, the return value will be unchanged. + * + * Returns ret, or -1 if an error is detected. + */ +int virQEMUSaveFdFini(virQEMUSaveFd *saveFd, virDomainObj *vm, int ret) +{ + if (!saveFd) + return ret; + VIR_FORCE_CLOSE(saveFd->fd); + if (vm) { + if (qemuDomainFileWrapperFDClose(vm, saveFd->wrapper) < 0) + ret = -1; + } else { + if (virFileWrapperFdClose(saveFd->wrapper) < 0) + ret = -1; + } + + if (ret < 0 && saveFd->need_unlink && saveFd->path) { + if (unlink(saveFd->path) < 0) { + virReportSystemError(errno, _("cannot remove file: %s"), + saveFd->path); + } + } + if (saveFd->wrapper) { + virFileWrapperFdFree(saveFd->wrapper); + saveFd->wrapper = NULL; + } + + g_free(saveFd->path); + saveFd->path = NULL; + return ret; +} + /* Helper function to execute a migration to file with a correct save header * the caller needs to make sure that the processors are stopped and do all other diff --git a/src/qemu/qemu_saveimage.h b/src/qemu/qemu_saveimage.h index b3d5c02fd6..41937e5eb5 100644 --- a/src/qemu/qemu_saveimage.h +++ b/src/qemu/qemu_saveimage.h @@ -54,6 +54,24 @@ struct _virQEMUSaveData { }; +typedef struct _virQEMUSaveFd virQEMUSaveFd; +struct _virQEMUSaveFd { + char *path; + int fd; + bool need_unlink; + virFileWrapperFd *wrapper; +}; + +#define QEMU_SAVEFD_INVALID (virQEMUSaveFd) { .path = NULL, .fd = -1, .need_unlink = false, .wrapper = NULL } + +int virQEMUSaveFdInit(virQEMUSaveFd *saveFd, const char *base, int idx, + int oflags, virQEMUDriverConfig *cfg) + ATTRIBUTE_NONNULL(5); + +int virQEMUSaveFdClose(virQEMUSaveFd *saveFd, virDomainObj *vm); + +int virQEMUSaveFdFini(virQEMUSaveFd *saveFd, virDomainObj *vm, int ret); + virDomainDef * qemuSaveImageUpdateDef(virQEMUDriver *driver, virDomainDef *def, -- 2.35.3

all the logic to open a fd, create a wrapper etc, is boilerplate code that is best reused, so change the Open function to take an existing already initialized virQEMUSaveFd. Adapt all callers of qemuSaveImageOpen. Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_driver.c | 101 ++++++++++++++++++++++---------------- src/qemu/qemu_saveimage.c | 86 ++++++++------------------------ src/qemu/qemu_saveimage.h | 9 ++-- 3 files changed, 83 insertions(+), 113 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index ce399cd197..f3d5f3937d 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -5824,12 +5824,13 @@ qemuDomainRestoreInternal(virConnectPtr conn, virDomainObj *vm = NULL; g_autofree char *xmlout = NULL; const char *newxml = dxml; - int fd = -1; int ret = -1; virQEMUSaveData *data = NULL; - virFileWrapperFd *wrapperFd = NULL; + virQEMUSaveFd saveFd = QEMU_SAVEFD_INVALID; bool hook_taint = false; bool reset_nvram = false; + g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver); + int oflags = O_RDONLY; virCheckFlags(VIR_DOMAIN_SAVE_BYPASS_CACHE | VIR_DOMAIN_SAVE_RUNNING | @@ -5840,10 +5841,17 @@ qemuDomainRestoreInternal(virConnectPtr conn, if (flags & VIR_DOMAIN_SAVE_RESET_NVRAM) reset_nvram = true; - fd = qemuSaveImageOpen(driver, NULL, path, &def, &data, - (flags & VIR_DOMAIN_SAVE_BYPASS_CACHE) != 0, - &wrapperFd, false, false); - if (fd < 0) + if (flags & VIR_DOMAIN_SAVE_BYPASS_CACHE) { + if (virFileDirectFdFlag() < 0) { + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("bypass cache unsupported by this system")); + return -1; + } + oflags |= O_DIRECT; + } + if (virQEMUSaveFdInit(&saveFd, path, 0, oflags, cfg) < 0) + return -1; + if (qemuSaveImageOpen(driver, NULL, &def, &data, false, &saveFd) < 0) goto cleanup; if (ensureACL(conn, def) < 0) @@ -5897,16 +5905,13 @@ qemuDomainRestoreInternal(virConnectPtr conn, flags) < 0) goto cleanup; - ret = qemuSaveImageStartVM(conn, driver, vm, &fd, data, path, + ret = qemuSaveImageStartVM(conn, driver, vm, &saveFd.fd, data, path, false, reset_nvram, VIR_ASYNC_JOB_START); qemuProcessEndJob(vm); cleanup: - VIR_FORCE_CLOSE(fd); - if (virFileWrapperFdClose(wrapperFd) < 0) - ret = -1; - virFileWrapperFdFree(wrapperFd); + ret = virQEMUSaveFdFini(&saveFd, vm, ret); virQEMUSaveDataFree(data); if (vm && ret < 0) qemuDomainRemoveInactive(driver, vm); @@ -5964,15 +5969,15 @@ qemuDomainSaveImageGetXMLDesc(virConnectPtr conn, const char *path, virQEMUDriver *driver = conn->privateData; char *ret = NULL; g_autoptr(virDomainDef) def = NULL; - int fd = -1; virQEMUSaveData *data = NULL; + g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver); + virQEMUSaveFd saveFd = QEMU_SAVEFD_INVALID; virCheckFlags(VIR_DOMAIN_SAVE_IMAGE_XML_SECURE, NULL); - fd = qemuSaveImageOpen(driver, NULL, path, &def, &data, - false, NULL, false, false); - - if (fd < 0) + if (virQEMUSaveFdInit(&saveFd, path, 0, O_RDONLY, cfg) < 0) + return NULL; + if (qemuSaveImageOpen(driver, NULL, &def, &data, false, &saveFd) < 0) goto cleanup; if (virDomainSaveImageGetXMLDescEnsureACL(conn, def) < 0) @@ -5982,7 +5987,8 @@ qemuDomainSaveImageGetXMLDesc(virConnectPtr conn, const char *path, cleanup: virQEMUSaveDataFree(data); - VIR_FORCE_CLOSE(fd); + if (virQEMUSaveFdFini(&saveFd, NULL, ret ? 0 : -1) < 0) + ret = NULL; return ret; } @@ -5994,8 +6000,9 @@ qemuDomainSaveImageDefineXML(virConnectPtr conn, const char *path, int ret = -1; g_autoptr(virDomainDef) def = NULL; g_autoptr(virDomainDef) newdef = NULL; - int fd = -1; virQEMUSaveData *data = NULL; + virQEMUSaveFd saveFd = QEMU_SAVEFD_INVALID; + g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver); int state = -1; virCheckFlags(VIR_DOMAIN_SAVE_RUNNING | @@ -6006,10 +6013,9 @@ qemuDomainSaveImageDefineXML(virConnectPtr conn, const char *path, else if (flags & VIR_DOMAIN_SAVE_PAUSED) state = 0; - fd = qemuSaveImageOpen(driver, NULL, path, &def, &data, - false, NULL, true, false); - - if (fd < 0) + if (virQEMUSaveFdInit(&saveFd, path, 0, O_RDWR, cfg) < 0) + return -1; + if (qemuSaveImageOpen(driver, NULL, &def, &data, false, &saveFd) < 0) goto cleanup; if (virDomainSaveImageDefineXMLEnsureACL(conn, def) < 0) @@ -6036,15 +6042,15 @@ qemuDomainSaveImageDefineXML(virConnectPtr conn, const char *path, VIR_DOMAIN_XML_MIGRATABLE))) goto cleanup; - if (lseek(fd, 0, SEEK_SET) != 0) { + if (lseek(saveFd.fd, 0, SEEK_SET) != 0) { virReportSystemError(errno, _("cannot seek in '%s'"), path); goto cleanup; } - if (virQEMUSaveDataWrite(data, fd, path) < 0) + if (virQEMUSaveDataWrite(data, saveFd.fd, path) < 0) goto cleanup; - if (VIR_CLOSE(fd) < 0) { + if (virQEMUSaveFdClose(&saveFd, NULL) < 0) { virReportSystemError(errno, _("failed to write header data to '%s'"), path); goto cleanup; } @@ -6052,8 +6058,8 @@ qemuDomainSaveImageDefineXML(virConnectPtr conn, const char *path, ret = 0; cleanup: - VIR_FORCE_CLOSE(fd); virQEMUSaveDataFree(data); + ret = virQEMUSaveFdFini(&saveFd, NULL, ret); return ret; } @@ -6065,8 +6071,9 @@ qemuDomainManagedSaveGetXMLDesc(virDomainPtr dom, unsigned int flags) g_autofree char *path = NULL; char *ret = NULL; g_autoptr(virDomainDef) def = NULL; - int fd = -1; virQEMUSaveData *data = NULL; + virQEMUSaveFd saveFd = QEMU_SAVEFD_INVALID; + g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver); qemuDomainObjPrivate *priv; virCheckFlags(VIR_DOMAIN_SAVE_IMAGE_XML_SECURE, NULL); @@ -6088,15 +6095,18 @@ qemuDomainManagedSaveGetXMLDesc(virDomainPtr dom, unsigned int flags) goto cleanup; } - if ((fd = qemuSaveImageOpen(driver, priv->qemuCaps, path, &def, &data, - false, NULL, false, false)) < 0) + if (virQEMUSaveFdInit(&saveFd, path, 0, O_RDONLY, cfg) < 0) + goto cleanup; + if (qemuSaveImageOpen(driver, priv->qemuCaps, &def, &data, false, + &saveFd) < 0) goto cleanup; ret = qemuDomainDefFormatXML(driver, priv->qemuCaps, def, flags); cleanup: virQEMUSaveDataFree(data); - VIR_FORCE_CLOSE(fd); + if (virQEMUSaveFdFini(&saveFd, vm, ret ? 0 : -1) < 0) + ret = NULL; virDomainObjEndAPI(&vm); return ret; } @@ -6147,20 +6157,30 @@ qemuDomainObjRestore(virConnectPtr conn, { g_autoptr(virDomainDef) def = NULL; qemuDomainObjPrivate *priv = vm->privateData; - int fd = -1; int ret = -1; g_autofree char *xmlout = NULL; virQEMUSaveData *data = NULL; - virFileWrapperFd *wrapperFd = NULL; + virQEMUSaveFd saveFd = QEMU_SAVEFD_INVALID; + int oflags = O_RDONLY; + g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver); - fd = qemuSaveImageOpen(driver, NULL, path, &def, &data, - bypass_cache, &wrapperFd, false, true); - if (fd < 0) { - if (fd == -3) + if (bypass_cache) { + if (virFileDirectFdFlag() < 0) { + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("bypass cache unsupported by this system")); + return -1; + } + oflags |= O_DIRECT; + } + if (virQEMUSaveFdInit(&saveFd, path, 0, oflags, cfg) < 0) + goto cleanup; + ret = qemuSaveImageOpen(driver, NULL, &def, &data, true, &saveFd); + if (ret < 0) { + if (ret == -3) ret = 1; goto cleanup; } - + ret = -1; if (virHookPresent(VIR_HOOK_DRIVER_QEMU)) { int hookret; @@ -6200,15 +6220,12 @@ qemuDomainObjRestore(virConnectPtr conn, virDomainObjAssignDef(vm, &def, true, NULL); - ret = qemuSaveImageStartVM(conn, driver, vm, &fd, data, path, + ret = qemuSaveImageStartVM(conn, driver, vm, &saveFd.fd, data, path, start_paused, reset_nvram, asyncJob); cleanup: virQEMUSaveDataFree(data); - VIR_FORCE_CLOSE(fd); - if (virFileWrapperFdClose(wrapperFd) < 0) - ret = -1; - virFileWrapperFdFree(wrapperFd); + ret = virQEMUSaveFdFini(&saveFd, vm, ret); return ret; } diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index 30e9a16307..33807fe373 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -514,94 +514,53 @@ qemuSaveImageGetCompressionProgram(const char *imageFormat, * @path: path of the save image * @ret_def: returns domain definition created from the XML stored in the image * @ret_data: returns structure filled with data from the image header - * @bypass_cache: bypass cache when opening the file - * @wrapperFd: returns the file wrapper structure - * @open_write: open the file for writing (for updates) - * @unlink_corrupt: remove the image file if it is corrupted + * @unlink_corrupt: mark the image file for removal if it is corrupted + * @saveFd: the save file * - * Returns the opened fd of the save image file and fills the appropriate fields - * on success. On error returns -1 on most failures, -3 if corrupt image was - * unlinked (no error raised). + * Returns 0 on success or -1 on failure. + * -3 is a special failure in which the saveFd has been marked for unlinking. + * On success, the appropriate fields are filled. */ int qemuSaveImageOpen(virQEMUDriver *driver, virQEMUCaps *qemuCaps, - const char *path, virDomainDef **ret_def, virQEMUSaveData **ret_data, - bool bypass_cache, - virFileWrapperFd **wrapperFd, - bool open_write, - bool unlink_corrupt) + bool unlink_corrupt, + virQEMUSaveFd *saveFd) { - g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver); - VIR_AUTOCLOSE fd = -1; - int ret = -1; g_autoptr(virQEMUSaveData) data = NULL; virQEMUSaveHeader *header; g_autoptr(virDomainDef) def = NULL; - int oflags = open_write ? O_RDWR : O_RDONLY; size_t xml_len; size_t cookie_len; - if (bypass_cache) { - int directFlag = virFileDirectFdFlag(); - if (directFlag < 0) { - virReportError(VIR_ERR_OPERATION_FAILED, "%s", - _("bypass cache unsupported by this system")); - return -1; - } - oflags |= directFlag; - } - - if ((fd = qemuDomainOpenFile(cfg, NULL, path, oflags, NULL)) < 0) - return -1; - - if (bypass_cache && - !(*wrapperFd = virFileWrapperFdNew(&fd, path, - VIR_FILE_WRAPPER_BYPASS_CACHE))) - return -1; data = g_new0(virQEMUSaveData, 1); header = &data->header; - if (saferead(fd, header, sizeof(*header)) != sizeof(*header)) { - if (unlink_corrupt) { - if (unlink(path) < 0) { - virReportSystemError(errno, - _("cannot remove corrupt file: %s"), - path); - return -1; - } else { - return -3; - } - } - + if (saferead(saveFd->fd, header, sizeof(*header)) != sizeof(*header)) { virReportError(VIR_ERR_OPERATION_FAILED, "%s", _("failed to read qemu header")); + if (unlink_corrupt) { + saveFd->need_unlink = true; + return -3; + } return -1; } if (memcmp(header->magic, QEMU_SAVE_MAGIC, sizeof(header->magic)) != 0) { if (memcmp(header->magic, QEMU_SAVE_PARTIAL, sizeof(header->magic)) == 0) { + virReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("save image is incomplete")); if (unlink_corrupt) { - if (unlink(path) < 0) { - virReportSystemError(errno, - _("cannot remove corrupt file: %s"), - path); - return -1; - } else { - return -3; - } + saveFd->need_unlink = true; + return -3; } - + } else { virReportError(VIR_ERR_OPERATION_FAILED, "%s", - _("save image is incomplete")); - return -1; + _("image magic is incorrect")); } - - virReportError(VIR_ERR_OPERATION_FAILED, "%s", - _("image magic is incorrect")); return -1; } @@ -632,7 +591,7 @@ qemuSaveImageOpen(virQEMUDriver *driver, data->xml = g_new0(char, xml_len); - if (saferead(fd, data->xml, xml_len) != xml_len) { + if (saferead(saveFd->fd, data->xml, xml_len) != xml_len) { virReportError(VIR_ERR_OPERATION_FAILED, "%s", _("failed to read domain XML")); return -1; @@ -641,7 +600,7 @@ qemuSaveImageOpen(virQEMUDriver *driver, if (cookie_len > 0) { data->cookie = g_new0(char, cookie_len); - if (saferead(fd, data->cookie, cookie_len) != cookie_len) { + if (saferead(saveFd->fd, data->cookie, cookie_len) != cookie_len) { virReportError(VIR_ERR_OPERATION_FAILED, "%s", _("failed to read cookie")); return -1; @@ -657,10 +616,7 @@ qemuSaveImageOpen(virQEMUDriver *driver, *ret_def = g_steal_pointer(&def); *ret_data = g_steal_pointer(&data); - ret = fd; - fd = -1; - - return ret; + return 0; } int diff --git a/src/qemu/qemu_saveimage.h b/src/qemu/qemu_saveimage.h index 41937e5eb5..5dc63f3661 100644 --- a/src/qemu/qemu_saveimage.h +++ b/src/qemu/qemu_saveimage.h @@ -92,14 +92,11 @@ qemuSaveImageStartVM(virConnectPtr conn, int qemuSaveImageOpen(virQEMUDriver *driver, virQEMUCaps *qemuCaps, - const char *path, virDomainDef **ret_def, virQEMUSaveData **ret_data, - bool bypass_cache, - virFileWrapperFd **wrapperFd, - bool open_write, - bool unlink_corrupt) - ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4); + bool unlink_corrupt, + virQEMUSaveFd *saveFd) + ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(6); int qemuSaveImageGetCompressionProgram(const char *imageFormat, -- 2.35.3

use the multifd helper and the new virQEMUSaveFd APIs for multifd. Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_saveimage.c | 42 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 39 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index 264868b5a4..2a9ef622be 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -17,6 +17,7 @@ */ #include <config.h> +#include <configmake.h> #include "qemu_saveimage.h" #include "qemu_domain.h" @@ -478,6 +479,7 @@ qemuSaveImageCreate(virQEMUDriver *driver, { g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver); virQEMUSaveFd saveFd = QEMU_SAVEFD_INVALID; + virQEMUSaveFd *multiFd = NULL; unsigned int oflags = O_WRONLY | O_TRUNC | O_CREAT; int ret = -1; @@ -497,9 +499,42 @@ qemuSaveImageCreate(virQEMUDriver *driver, if (virQEMUSaveDataWrite(data, saveFd.fd, saveFd.path) < 0) goto cleanup; - /* Perform the migration */ - if (qemuMigrationSrcToFile(driver, vm, saveFd.fd, compressor, asyncJob) < 0) - goto cleanup; + if (flags & VIR_DOMAIN_SAVE_PARALLEL) { + g_autoptr(virCommand) cmd = NULL; + g_autofree char *helper_path = NULL; + qemuDomainObjPrivate *priv = vm->privateData; + g_autofree char *sun_path = g_strdup_printf("%s/save-multifd.sock", priv->libDir); + char buf[1]; + int helper_out = -1; + if (!(helper_path = virFileFindResource("libvirt_multifd_helper", + abs_top_builddir "/src", + LIBEXECDIR))) + goto cleanup; + cmd = virCommandNewArgList(helper_path, sun_path, NULL); + virCommandAddArgFormat(cmd, "%d", nconn); + virCommandAddArgFormat(cmd, "%d", saveFd.fd); + virCommandPassFD(cmd, saveFd.fd, 0); + virCommandSetOutputFD(cmd, &helper_out); /* should create pipe automagically */ + + /* Perform parallel multifd migration to files (main fd + channels) */ + if (!(multiFd = qemuSaveImageCreateMultiFd(driver, vm, cmd, saveFd.path, oflags, cfg, nconn))) + goto cleanup; + if (virCommandRunAsync(cmd, NULL) < 0) + goto cleanup; + if (saferead(helper_out, &buf, 1) != 1 || buf[0] != 'R') + goto cleanup; + if (chown(sun_path, cfg->user, cfg->group) < 0) + goto cleanup; + /* still using single fd migration for now */ + if (qemuMigrationSrcToFile(driver, vm, saveFd.fd, compressor, asyncJob) < 0) + goto cleanup; + if (qemuSaveImageCloseMultiFd(multiFd, nconn, vm) < 0) + goto cleanup; + } else { + /* Perform non-parallel migration to file */ + if (qemuMigrationSrcToFile(driver, vm, saveFd.fd, compressor, asyncJob) < 0) + goto cleanup; + } if (virQEMUSaveFdClose(&saveFd, vm) < 0) goto cleanup; @@ -518,6 +553,7 @@ qemuSaveImageCreate(virQEMUDriver *driver, ret = 0; cleanup: + ret = qemuSaveImageFreeMultiFd(multiFd, vm, nconn, ret); ret = virQEMUSaveFdFini(&saveFd, vm, ret); return ret; } -- 2.35.3

similarly to qemuMigrationParamsSetULL, we need to be able to set fields from qemu_saveimage. Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_migration_params.c | 22 ++++++++++++++++++++++ src/qemu/qemu_migration_params.h | 9 +++++++++ 2 files changed, 31 insertions(+) diff --git a/src/qemu/qemu_migration_params.c b/src/qemu/qemu_migration_params.c index df2384b213..36174a66d8 100644 --- a/src/qemu/qemu_migration_params.c +++ b/src/qemu/qemu_migration_params.c @@ -1109,6 +1109,28 @@ qemuMigrationParamsFetch(virQEMUDriver *driver, } +void +qemuMigrationParamsSetCap(qemuMigrationParams *migParams, + virQEMUCapsFlags flag) +{ + ignore_value(virBitmapSetBit(migParams->caps, flag)); +} + + +int +qemuMigrationParamsSetInt(qemuMigrationParams *migParams, + qemuMigrationParam param, + int value) +{ + if (qemuMigrationParamsCheckType(param, QEMU_MIGRATION_PARAM_TYPE_INT) < 0) + return -1; + + migParams->params[param].value.i = value; + migParams->params[param].set = true; + return 0; +} + + int qemuMigrationParamsSetULL(qemuMigrationParams *migParams, qemuMigrationParam param, diff --git a/src/qemu/qemu_migration_params.h b/src/qemu/qemu_migration_params.h index 4a8815e776..99af73b4a4 100644 --- a/src/qemu/qemu_migration_params.h +++ b/src/qemu/qemu_migration_params.h @@ -123,6 +123,15 @@ qemuMigrationParamsFetch(virQEMUDriver *driver, int asyncJob, qemuMigrationParams **migParams); +void +qemuMigrationParamsSetCap(qemuMigrationParams *migParams, + virQEMUCapsFlags flag); + +int +qemuMigrationParamsSetInt(qemuMigrationParams *migParams, + qemuMigrationParam param, + int value); + int qemuMigrationParamsSetULL(qemuMigrationParams *migParams, qemuMigrationParam param, -- 2.35.3

The distinction on whether to wait for the migration completion or not was made on the async job type, but with the future addition of multifd migration from files, we need a way to avoid waiting, so we can prepare multifd migration parameters before starting the transfers. Adapt all callers. Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_driver.c | 8 ++++---- src/qemu/qemu_migration.c | 18 ++++++++++-------- src/qemu/qemu_migration.h | 3 ++- src/qemu/qemu_process.c | 3 ++- src/qemu/qemu_process.h | 5 +++-- src/qemu/qemu_saveimage.c | 4 +++- src/qemu/qemu_saveimage.h | 1 + src/qemu/qemu_snapshot.c | 4 ++-- 8 files changed, 27 insertions(+), 19 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index f3d5f3937d..0e8dd7748c 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -1630,7 +1630,7 @@ static virDomainPtr qemuDomainCreateXML(virConnectPtr conn, } if (qemuProcessStart(conn, driver, vm, NULL, VIR_ASYNC_JOB_START, - NULL, -1, NULL, NULL, + NULL, -1, NULL, false, NULL, VIR_NETDEV_VPORT_PROFILE_OP_CREATE, start_flags) < 0) { virDomainAuditStart(vm, "booted", false); @@ -5906,7 +5906,7 @@ qemuDomainRestoreInternal(virConnectPtr conn, goto cleanup; ret = qemuSaveImageStartVM(conn, driver, vm, &saveFd.fd, data, path, - false, reset_nvram, VIR_ASYNC_JOB_START); + false, reset_nvram, true, VIR_ASYNC_JOB_START); qemuProcessEndJob(vm); @@ -6221,7 +6221,7 @@ qemuDomainObjRestore(virConnectPtr conn, virDomainObjAssignDef(vm, &def, true, NULL); ret = qemuSaveImageStartVM(conn, driver, vm, &saveFd.fd, data, path, - start_paused, reset_nvram, asyncJob); + start_paused, reset_nvram, true, asyncJob); cleanup: virQEMUSaveDataFree(data); @@ -6484,7 +6484,7 @@ qemuDomainObjStart(virConnectPtr conn, } ret = qemuProcessStart(conn, driver, vm, NULL, asyncJob, - NULL, -1, NULL, NULL, + NULL, -1, NULL, false, NULL, VIR_NETDEV_VPORT_PROFILE_OP_CREATE, start_flags); virDomainAuditStart(vm, "booted", ret >= 0); if (ret >= 0) { diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index 004e84556c..93cd446b23 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -2139,7 +2139,8 @@ int qemuMigrationDstRun(virQEMUDriver *driver, virDomainObj *vm, const char *uri, - virDomainAsyncJob asyncJob) + virDomainAsyncJob asyncJob, + bool wait) { qemuDomainObjPrivate *priv = vm->privateData; int rv; @@ -2160,14 +2161,15 @@ qemuMigrationDstRun(virQEMUDriver *driver, if (rv < 0) return -1; - if (asyncJob == VIR_ASYNC_JOB_MIGRATION_IN) { - /* qemuMigrationDstWaitForCompletion is called from the Finish phase */ - return 0; + if (wait) { + /* + * the Migration Finish phase, as well as the multifd load from files, + * need to call qemuMigrationDstWaitForCompletion separately, not here. + */ + if (qemuMigrationDstWaitForCompletion(driver, vm, asyncJob, false) < 0) + return -1; } - if (qemuMigrationDstWaitForCompletion(driver, vm, asyncJob, false) < 0) - return -1; - return 0; } @@ -3041,7 +3043,7 @@ qemuMigrationDstPrepareAny(virQEMUDriver *driver, } if (qemuMigrationDstRun(driver, vm, incoming->uri, - VIR_ASYNC_JOB_MIGRATION_IN) < 0) + VIR_ASYNC_JOB_MIGRATION_IN, false) < 0) goto stopjob; if (qemuProcessFinishStartup(driver, vm, VIR_ASYNC_JOB_MIGRATION_IN, diff --git a/src/qemu/qemu_migration.h b/src/qemu/qemu_migration.h index ddc8e65489..c3c48c19c0 100644 --- a/src/qemu/qemu_migration.h +++ b/src/qemu/qemu_migration.h @@ -255,7 +255,8 @@ int qemuMigrationDstRun(virQEMUDriver *driver, virDomainObj *vm, const char *uri, - virDomainAsyncJob asyncJob); + virDomainAsyncJob asyncJob, + bool wait); void qemuMigrationAnyPostcopyFailed(virQEMUDriver *driver, diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index b0b00eb0a2..0a1e7985fb 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -7788,6 +7788,7 @@ qemuProcessStart(virConnectPtr conn, const char *migrateFrom, int migrateFd, const char *migratePath, + bool wait_incoming, virDomainMomentObj *snapshot, virNetDevVPortProfileOp vmop, unsigned int flags) @@ -7850,7 +7851,7 @@ qemuProcessStart(virConnectPtr conn, relabel = true; if (incoming) { - if (qemuMigrationDstRun(driver, vm, incoming->uri, asyncJob) < 0) + if (qemuMigrationDstRun(driver, vm, incoming->uri, asyncJob, wait_incoming) < 0) goto stop; } else { /* Refresh state of devices from QEMU. During migration this happens diff --git a/src/qemu/qemu_process.h b/src/qemu/qemu_process.h index f81bfd930a..5a1d005cb0 100644 --- a/src/qemu/qemu_process.h +++ b/src/qemu/qemu_process.h @@ -86,8 +86,9 @@ int qemuProcessStart(virConnectPtr conn, virCPUDef *updatedCPU, virDomainAsyncJob asyncJob, const char *migrateFrom, - int stdin_fd, - const char *stdin_path, + int fd, + const char *migratePath, + bool wait_incoming, virDomainMomentObj *snapshot, virNetDevVPortProfileOp vmop, unsigned int flags); diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index 485e3163b7..83dea78718 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -781,6 +781,7 @@ qemuSaveImageStartVM(virConnectPtr conn, const char *path, bool start_paused, bool reset_nvram, + bool wait_incoming, virDomainAsyncJob asyncJob) { qemuDomainObjPrivate *priv = vm->privateData; @@ -835,7 +836,8 @@ qemuSaveImageStartVM(virConnectPtr conn, priv->disableSlirp = true; if (qemuProcessStart(conn, driver, vm, cookie ? cookie->cpu : NULL, - asyncJob, "stdio", *fd, path, NULL, + asyncJob, "stdio", *fd, path, wait_incoming, + NULL, VIR_NETDEV_VPORT_PROFILE_OP_RESTORE, start_flags) == 0) started = true; diff --git a/src/qemu/qemu_saveimage.h b/src/qemu/qemu_saveimage.h index 356fc7561e..412624b968 100644 --- a/src/qemu/qemu_saveimage.h +++ b/src/qemu/qemu_saveimage.h @@ -99,6 +99,7 @@ qemuSaveImageStartVM(virConnectPtr conn, const char *path, bool start_paused, bool reset_nvram, + bool wait_incoming, virDomainAsyncJob asyncJob) ATTRIBUTE_NONNULL(4) ATTRIBUTE_NONNULL(5) ATTRIBUTE_NONNULL(6); diff --git a/src/qemu/qemu_snapshot.c b/src/qemu/qemu_snapshot.c index 2e445e8296..626a5a14b9 100644 --- a/src/qemu/qemu_snapshot.c +++ b/src/qemu/qemu_snapshot.c @@ -2092,7 +2092,7 @@ qemuSnapshotRevertActive(virDomainObj *vm, rc = qemuProcessStart(snapshot->domain->conn, driver, vm, cookie ? cookie->cpu : NULL, - VIR_ASYNC_JOB_START, NULL, -1, NULL, snap, + VIR_ASYNC_JOB_START, NULL, -1, NULL, false, snap, VIR_NETDEV_VPORT_PROFILE_OP_CREATE, start_flags); virDomainAuditStart(vm, "from-snapshot", rc >= 0); @@ -2215,7 +2215,7 @@ qemuSnapshotRevertInactive(virDomainObj *vm, start_flags |= paused ? VIR_QEMU_PROCESS_START_PAUSED : 0; rc = qemuProcessStart(snapshot->domain->conn, driver, vm, NULL, - VIR_ASYNC_JOB_START, NULL, -1, NULL, NULL, + VIR_ASYNC_JOB_START, NULL, -1, NULL, false, NULL, VIR_NETDEV_VPORT_PROFILE_OP_CREATE, start_flags); virDomainAuditStart(vm, "from-snapshot", rc >= 0); -- 2.35.3

Signed-off-by: Claudio Fontana <cfontana@suse.de> --- docs/manpages/virsh.rst | 23 +++++++++++++++++------ tools/virsh-domain.c | 24 ++++++++++++++++++++++-- 2 files changed, 39 insertions(+), 8 deletions(-) diff --git a/docs/manpages/virsh.rst b/docs/manpages/virsh.rst index e73e590754..e9012b85d1 100644 --- a/docs/manpages/virsh.rst +++ b/docs/manpages/virsh.rst @@ -3803,15 +3803,18 @@ save :: save domain state-file [--bypass-cache] [--xml file] + [--parallel] [--parallel-connections connections] [{--running | --paused}] [--verbose] -Saves a running domain (RAM, but not disk state) to a state file so that -it can be restored -later. Once saved, the domain will no longer be running on the -system, thus the memory allocated for the domain will be free for -other domains to use. ``virsh restore`` restores from this state file. +Saves a paused or running domain (RAM, but not disk state) to one or more +state files, so that it can be restored later. +Once saved, the domain will no longer be running on the system, +thus the memory allocated for the domain will be free for +other domains to use. ``virsh restore`` restores from state file/s. + If *--bypass-cache* is specified, the save will avoid the file system -cache, although this may slow down the operation. +cache; depending on the specific scenario this may slow down or speed up +the operation. The progress may be monitored using ``domjobinfo`` virsh command and canceled with ``domjobabort`` command (sent by another virsh instance). Another option @@ -3833,6 +3836,14 @@ based on the state the domain was in when the save was done; passing either the *--running* or *--paused* flag will allow overriding which state the ``restore`` should use. +*--parallel* option will cause the save data to be sent over multiple +parallel connections to multiple files. The main save file is specified +with ``state-file``, and a number of additional connections can be +set using *--parallel-connections*, which will save to files named +``state-file``.1 , ``state-file``.2 ... up to ``connections``. + +Parallel connections may help in speeding up the save operation. + Domain saved state files assume that disk images will be unchanged between the creation and restore point. For a more complete system restore point, where the disk state is saved alongside the memory diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index 2d90fba9b7..40791f2135 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -4174,6 +4174,14 @@ static const vshCmdOptDef opts_save[] = { .type = VSH_OT_BOOL, .help = N_("avoid file system cache when saving") }, + {.name = "parallel", + .type = VSH_OT_BOOL, + .help = N_("enable parallel save to files") + }, + {.name = "parallel-connections", + .type = VSH_OT_INT, + .help = N_("number of connections/files for parallel save") + }, {.name = "xml", .type = VSH_OT_STRING, .completer = virshCompletePathLocalExisting, @@ -4206,6 +4214,8 @@ doSave(void *opaque) virTypedParameterPtr params = NULL; int nparams = 0; int maxparams = 0; + int intOpt = 0; + int rv = -1; unsigned int flags = 0; const char *xmlfile = NULL; g_autofree char *xml = NULL; @@ -4227,6 +4237,15 @@ doSave(void *opaque) } if (vshCommandOptBool(cmd, "bypass-cache")) flags |= VIR_DOMAIN_SAVE_BYPASS_CACHE; + if (vshCommandOptBool(cmd, "parallel")) + flags |= VIR_DOMAIN_SAVE_PARALLEL; + if ((rv = vshCommandOptInt(ctl, cmd, "parallel-connections", &intOpt)) < 0) { + goto out; + } else if (rv > 0) { + if (virTypedParamsAddInt(¶ms, &nparams, &maxparams, + VIR_SAVE_PARAM_PARALLEL_CONNECTIONS, intOpt) < 0) + goto out; + } if (vshCommandOptBool(cmd, "running")) flags |= VIR_DOMAIN_SAVE_RUNNING; if (vshCommandOptBool(cmd, "paused")) @@ -4247,8 +4266,9 @@ doSave(void *opaque) goto out; } } - - if (flags || xml) { + if (flags & VIR_DOMAIN_SAVE_PARALLEL) { + rc = virDomainSaveParams(dom, params, nparams, flags); + } else if (flags || xml) { rc = virDomainSaveFlags(dom, to, xml, flags); } else { rc = virDomainSave(dom, to); -- 2.35.3

add it to both capabilities and migration parameters Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_capabilities.c | 2 ++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_migration_params.c | 2 ++ src/qemu/qemu_migration_params.h | 1 + tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml | 1 + tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml | 1 + tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_5.1.0.sparc.xml | 1 + tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml | 1 + tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml | 1 + tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml | 1 + tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_6.2.0.aarch64.xml | 1 + tests/qemucapabilitiesdata/caps_6.2.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_6.2.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_7.0.0.aarch64.xml | 1 + tests/qemucapabilitiesdata/caps_7.0.0.ppc64.xml | 1 + tests/qemucapabilitiesdata/caps_7.0.0.x86_64.xml | 1 + 25 files changed, 27 insertions(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 581b6a40df..9c2d5643eb 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -675,6 +675,7 @@ VIR_ENUM_IMPL(virQEMUCaps, /* 430 */ "migrate-multifd", /* QEMU_CAPS_MIGRATE_MULTIFD */ + "migration-param.multifd-compression", /* QEMU_CAPS_MIGRATION_PARAM_MULTIFD_COMPRESSION */ ); @@ -1612,6 +1613,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsQMPSchemaQueries[] = { { "migrate-set-parameters/arg-type/downtime-limit", QEMU_CAPS_MIGRATION_PARAM_DOWNTIME }, { "migrate-set-parameters/arg-type/xbzrle-cache-size", QEMU_CAPS_MIGRATION_PARAM_XBZRLE_CACHE_SIZE }, { "migrate-set-parameters/arg-type/block-bitmap-mapping/bitmaps/transform", QEMU_CAPS_MIGRATION_PARAM_BLOCK_BITMAP_MAPPING }, + { "migrate-set-parameters/arg-type/multifd-compression", QEMU_CAPS_MIGRATION_PARAM_MULTIFD_COMPRESSION }, { "nbd-server-start/arg-type/tls-creds", QEMU_CAPS_NBD_TLS }, { "nbd-server-add/arg-type/bitmap", QEMU_CAPS_NBD_BITMAP }, { "netdev_add/arg-type/+vhost-vdpa", QEMU_CAPS_NETDEV_VHOST_VDPA }, diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index b089f83da1..e226b1a51a 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -650,6 +650,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */ /* 430 */ QEMU_CAPS_MIGRATE_MULTIFD, /* migrate can set multifd parameter */ + QEMU_CAPS_MIGRATION_PARAM_MULTIFD_COMPRESSION, /* multifd-compression in migrate-set-parameters */ QEMU_CAPS_LAST /* this must always be the last item */ } virQEMUCapsFlags; diff --git a/src/qemu/qemu_migration_params.c b/src/qemu/qemu_migration_params.c index 36174a66d8..75b29e93a1 100644 --- a/src/qemu/qemu_migration_params.c +++ b/src/qemu/qemu_migration_params.c @@ -115,6 +115,7 @@ VIR_ENUM_IMPL(qemuMigrationParam, "xbzrle-cache-size", "max-postcopy-bandwidth", "multifd-channels", + "multifd-compression", ); typedef struct _qemuMigrationParamsAlwaysOnItem qemuMigrationParamsAlwaysOnItem; @@ -234,6 +235,7 @@ static const qemuMigrationParamType qemuMigrationParamTypes[] = { [QEMU_MIGRATION_PARAM_XBZRLE_CACHE_SIZE] = QEMU_MIGRATION_PARAM_TYPE_ULL, [QEMU_MIGRATION_PARAM_MAX_POSTCOPY_BANDWIDTH] = QEMU_MIGRATION_PARAM_TYPE_ULL, [QEMU_MIGRATION_PARAM_MULTIFD_CHANNELS] = QEMU_MIGRATION_PARAM_TYPE_INT, + [QEMU_MIGRATION_PARAM_MULTIFD_COMPRESSION] = QEMU_MIGRATION_PARAM_TYPE_STRING, }; G_STATIC_ASSERT(G_N_ELEMENTS(qemuMigrationParamTypes) == QEMU_MIGRATION_PARAM_LAST); diff --git a/src/qemu/qemu_migration_params.h b/src/qemu/qemu_migration_params.h index 99af73b4a4..8b2d6ab210 100644 --- a/src/qemu/qemu_migration_params.h +++ b/src/qemu/qemu_migration_params.h @@ -60,6 +60,7 @@ typedef enum { QEMU_MIGRATION_PARAM_XBZRLE_CACHE_SIZE, QEMU_MIGRATION_PARAM_MAX_POSTCOPY_BANDWIDTH, QEMU_MIGRATION_PARAM_MULTIFD_CHANNELS, + QEMU_MIGRATION_PARAM_MULTIFD_COMPRESSION, QEMU_MIGRATION_PARAM_LAST } qemuMigrationParam; diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml index c45b2e6cf6..1d032789b7 100644 --- a/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml +++ b/tests/qemucapabilitiesdata/caps_5.0.0.aarch64.xml @@ -176,6 +176,7 @@ <flag name='memory-backend-file.prealloc-threads'/> <flag name='virtio-iommu-pci'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>61700241</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml index a3ad743d70..4748bf791e 100644 --- a/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_5.0.0.ppc64.xml @@ -182,6 +182,7 @@ <flag name='memory-backend-file.prealloc-threads'/> <flag name='virtio-iommu-pci'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900241</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml index e1b5cac26b..859638fb1c 100644 --- a/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml +++ b/tests/qemucapabilitiesdata/caps_5.0.0.riscv64.xml @@ -168,6 +168,7 @@ <flag name='memory-backend-file.prealloc-threads'/> <flag name='virtio-iommu-pci'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>0</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml index 796adb9066..305ae0bf26 100644 --- a/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_5.0.0.x86_64.xml @@ -216,6 +216,7 @@ <flag name='memory-backend-file.prealloc-threads'/> <flag name='virtio-iommu-pci'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100241</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.1.0.sparc.xml b/tests/qemucapabilitiesdata/caps_5.1.0.sparc.xml index cb203df125..e0ff08a445 100644 --- a/tests/qemucapabilitiesdata/caps_5.1.0.sparc.xml +++ b/tests/qemucapabilitiesdata/caps_5.1.0.sparc.xml @@ -88,6 +88,7 @@ <flag name='query-display-options'/> <flag name='memory-backend-file.prealloc-threads'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5001000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>0</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml index 7479d942a2..9f089f551e 100644 --- a/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_5.1.0.x86_64.xml @@ -220,6 +220,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5001000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100242</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml index 268d1444ad..3de49adf5b 100644 --- a/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml +++ b/tests/qemucapabilitiesdata/caps_5.2.0.aarch64.xml @@ -183,6 +183,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>61700243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml index eabf4b600c..ec2ee445a1 100644 --- a/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_5.2.0.ppc64.xml @@ -187,6 +187,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml b/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml index 0dbaf5a5ec..cf250f2e42 100644 --- a/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml +++ b/tests/qemucapabilitiesdata/caps_5.2.0.riscv64.xml @@ -173,6 +173,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>0</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml b/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml index b0fbab9cb5..6dc5f25f36 100644 --- a/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml +++ b/tests/qemucapabilitiesdata/caps_5.2.0.s390x.xml @@ -141,6 +141,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>39100243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml index 1a1717bf2a..69bfdcea01 100644 --- a/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_5.2.0.x86_64.xml @@ -224,6 +224,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>5002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml index 1c18d122e2..cd25ee8ccb 100644 --- a/tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml +++ b/tests/qemucapabilitiesdata/caps_6.0.0.aarch64.xml @@ -191,6 +191,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>61700242</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml b/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml index 8fa4cb2307..659d952b08 100644 --- a/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml +++ b/tests/qemucapabilitiesdata/caps_6.0.0.s390x.xml @@ -149,6 +149,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>39100242</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml index 70c67202b1..7a2fdde901 100644 --- a/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_6.0.0.x86_64.xml @@ -233,6 +233,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100242</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml index a5ec77878f..f8c8266153 100644 --- a/tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml @@ -237,6 +237,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6001000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_6.2.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_6.2.0.aarch64.xml index 92d8ceff7e..09f7787797 100644 --- a/tests/qemucapabilitiesdata/caps_6.2.0.aarch64.xml +++ b/tests/qemucapabilitiesdata/caps_6.2.0.aarch64.xml @@ -202,6 +202,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6001050</version> <kvmVersion>0</kvmVersion> <microcodeVersion>61700244</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_6.2.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_6.2.0.ppc64.xml index f219912927..5c3342d67a 100644 --- a/tests/qemucapabilitiesdata/caps_6.2.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_6.2.0.ppc64.xml @@ -198,6 +198,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900244</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_6.2.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_6.2.0.x86_64.xml index 38fd3878ea..2ce9f7bb6c 100644 --- a/tests/qemucapabilitiesdata/caps_6.2.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_6.2.0.x86_64.xml @@ -239,6 +239,7 @@ <flag name='virtio-iommu-pci'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6002000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100244</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_7.0.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_7.0.0.aarch64.xml index 522e225c8f..9de4d8bc51 100644 --- a/tests/qemucapabilitiesdata/caps_7.0.0.aarch64.xml +++ b/tests/qemucapabilitiesdata/caps_7.0.0.aarch64.xml @@ -210,6 +210,7 @@ <flag name='virtio-iommu.boot-bypass'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6002092</version> <kvmVersion>0</kvmVersion> <microcodeVersion>61700243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_7.0.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_7.0.0.ppc64.xml index 1eb43799c0..9a0e30b25a 100644 --- a/tests/qemucapabilitiesdata/caps_7.0.0.ppc64.xml +++ b/tests/qemucapabilitiesdata/caps_7.0.0.ppc64.xml @@ -211,6 +211,7 @@ <flag name='virtio-iommu.boot-bypass'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>6002092</version> <kvmVersion>0</kvmVersion> <microcodeVersion>42900243</microcodeVersion> diff --git a/tests/qemucapabilitiesdata/caps_7.0.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_7.0.0.x86_64.xml index e5023c4219..250993cd3f 100644 --- a/tests/qemucapabilitiesdata/caps_7.0.0.x86_64.xml +++ b/tests/qemucapabilitiesdata/caps_7.0.0.x86_64.xml @@ -243,6 +243,7 @@ <flag name='virtio-iommu.boot-bypass'/> <flag name='virtio-net.rss'/> <flag name='migrate-multifd'/> + <flag name='migration-param.multifd-compression'/> <version>7000000</version> <kvmVersion>0</kvmVersion> <microcodeVersion>43100243</microcodeVersion> -- 2.35.3

Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_driver.c | 11 ++++++----- src/qemu/qemu_saveimage.c | 1 + src/qemu/qemu_saveimage.h | 1 + src/qemu/qemu_snapshot.c | 2 +- 4 files changed, 9 insertions(+), 6 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 72ab679336..864825960d 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -2641,7 +2641,8 @@ static int qemuDomainSaveInternal(virQEMUDriver *driver, virDomainObj *vm, const char *path, int compressed, virCommand *compressor, - const char *xmlin, int nconn, unsigned int flags) + const char *xmlin, int nconn, const char *pcomp, + unsigned int flags) { g_autofree char *xml = NULL; bool was_running = false; @@ -2722,7 +2723,7 @@ qemuDomainSaveInternal(virQEMUDriver *driver, xml = NULL; ret = qemuSaveImageCreate(driver, vm, path, data, compressor, - nconn, flags, VIR_ASYNC_JOB_SAVE); + nconn, pcomp, flags, VIR_ASYNC_JOB_SAVE); if (ret < 0) goto endjob; @@ -2791,7 +2792,7 @@ qemuDomainSaveFlags(virDomainPtr dom, const char *path, const char *dxml, goto cleanup; ret = qemuDomainSaveInternal(driver, vm, path, compressed, - compressor, dxml, -1, flags); + compressor, dxml, -1, NULL, flags); cleanup: virDomainObjEndAPI(&vm); @@ -2854,7 +2855,7 @@ qemuDomainSaveParams(virDomainPtr dom, goto cleanup; ret = qemuDomainSaveInternal(driver, vm, to, compressed, - compressor, dxml, nconn, flags); + compressor, dxml, nconn, NULL, flags); cleanup: virDomainObjEndAPI(&vm); @@ -2911,7 +2912,7 @@ qemuDomainManagedSave(virDomainPtr dom, unsigned int flags) VIR_INFO("Saving state of domain '%s' to '%s'", vm->def->name, name); ret = qemuDomainSaveInternal(driver, vm, name, compressed, - compressor, NULL, -1, flags); + compressor, NULL, -1, NULL, flags); if (ret == 0) vm->hasManagedSave = true; diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index 753e297226..0162cb242d 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -491,6 +491,7 @@ qemuSaveImageCreate(virQEMUDriver *driver, virQEMUSaveData *data, virCommand *compressor, int nconn, + const char *pcomp G_GNUC_UNUSED, unsigned int flags, virDomainAsyncJob asyncJob) { diff --git a/src/qemu/qemu_saveimage.h b/src/qemu/qemu_saveimage.h index 719e6506a5..184cc17a68 100644 --- a/src/qemu/qemu_saveimage.h +++ b/src/qemu/qemu_saveimage.h @@ -132,6 +132,7 @@ qemuSaveImageCreate(virQEMUDriver *driver, virQEMUSaveData *data, virCommand *compressor, int nconn, + const char *pcomp, unsigned int flags, virDomainAsyncJob asyncJob); diff --git a/src/qemu/qemu_snapshot.c b/src/qemu/qemu_snapshot.c index 626a5a14b9..daa72983b3 100644 --- a/src/qemu/qemu_snapshot.c +++ b/src/qemu/qemu_snapshot.c @@ -1457,7 +1457,7 @@ qemuSnapshotCreateActiveExternal(virQEMUDriver *driver, memory_existing = virFileExists(snapdef->memorysnapshotfile); if ((ret = qemuSaveImageCreate(driver, vm, snapdef->memorysnapshotfile, - data, compressor, -1, 0, + data, compressor, -1, NULL, 0, VIR_ASYNC_JOB_SNAPSHOT)) < 0) goto cleanup; -- 2.35.3

change from static to external linkage, and move the function close to the other similar ones, near qemuMigrationParamsSetULL. Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_migration_params.c | 47 +++++++++++++++----------------- src/qemu/qemu_migration_params.h | 5 ++++ 2 files changed, 27 insertions(+), 25 deletions(-) diff --git a/src/qemu/qemu_migration_params.c b/src/qemu/qemu_migration_params.c index 75b29e93a1..f6b9dc337d 100644 --- a/src/qemu/qemu_migration_params.c +++ b/src/qemu/qemu_migration_params.c @@ -900,31 +900,6 @@ qemuMigrationParamsApply(virQEMUDriver *driver, } -/** - * qemuMigrationParamsSetString: - * @migrParams: migration parameter object - * @param: parameter to set - * @value: new value - * - * Enables and sets the migration parameter @param in @migrParams. Returns 0 on - * success and -1 on error. Libvirt error is reported. - */ -static int -qemuMigrationParamsSetString(qemuMigrationParams *migParams, - qemuMigrationParam param, - const char *value) -{ - if (qemuMigrationParamsCheckType(param, QEMU_MIGRATION_PARAM_TYPE_STRING) < 0) - return -1; - - migParams->params[param].value.s = g_strdup(value); - - migParams->params[param].set = true; - - return 0; -} - - /* qemuMigrationParamsEnableTLS * @driver: pointer to qemu driver * @vm: domain object @@ -1146,6 +1121,28 @@ qemuMigrationParamsSetULL(qemuMigrationParams *migParams, return 0; } +/** + * qemuMigrationParamsSetString: + * @migrParams: migration parameter object + * @param: parameter to set + * @value: new value + * + * Enables and sets the migration parameter @param in @migrParams. Returns 0 on + * success and -1 on error. Libvirt error is reported. + */ +int +qemuMigrationParamsSetString(qemuMigrationParams *migParams, + qemuMigrationParam param, + const char *value) +{ + if (qemuMigrationParamsCheckType(param, QEMU_MIGRATION_PARAM_TYPE_STRING) < 0) + return -1; + + migParams->params[param].value.s = g_strdup(value); + migParams->params[param].set = true; + return 0; +} + /** * Returns -1 on error, diff --git a/src/qemu/qemu_migration_params.h b/src/qemu/qemu_migration_params.h index 8b2d6ab210..23a4e0c8a2 100644 --- a/src/qemu/qemu_migration_params.h +++ b/src/qemu/qemu_migration_params.h @@ -138,6 +138,11 @@ qemuMigrationParamsSetULL(qemuMigrationParams *migParams, qemuMigrationParam param, unsigned long long value); +int +qemuMigrationParamsSetString(qemuMigrationParams *migParams, + qemuMigrationParam param, + const char *value); + int qemuMigrationParamsGetULL(qemuMigrationParams *migParams, qemuMigrationParam param, -- 2.35.3

Signed-off-by: Claudio Fontana <cfontana@suse.de> --- src/qemu/qemu_saveimage.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/src/qemu/qemu_saveimage.c b/src/qemu/qemu_saveimage.c index df273eba66..eed52140ed 100644 --- a/src/qemu/qemu_saveimage.c +++ b/src/qemu/qemu_saveimage.c @@ -649,6 +649,23 @@ int qemuSaveImageLoadMultiFd(virConnectPtr conn, virDomainObj *vm, int oflags, QEMU_MIGRATION_PARAM_MULTIFD_CHANNELS, nchannels) < 0) goto cleanup; + if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_MIGRATION_PARAM_MULTIFD_COMPRESSION)) { + const char *pcomp = qemuSaveMultiFdCompTypeToString(data->header.multifd_comp); + if (!pcomp) { + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, + _("libvirt does not support parallel compression type %u"), + data->header.multifd_comp); + goto cleanup; + } + if (qemuMigrationParamsSetString(migParams, + QEMU_MIGRATION_PARAM_MULTIFD_COMPRESSION, + pcomp) < 0) + goto cleanup; + } else if (data->header.multifd_comp != QEMU_SAVE_MULTIFD_COMP_NONE) { + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("QEMU does not seem to support multifd compression")); + goto cleanup; + } if (qemuMigrationParamsApply(driver, vm, asyncJob, migParams) < 0) goto cleanup; -- 2.35.3