This patch makes use of the QEMU guest agent to implement the
virDomainMemoryDump API.
Signed-off-by: Qiao Nuohan <qiaonuohan@xxxxxxxxxxxxxx>
---
src/qemu/qemu_driver.c | 42 ++++++++++++++++++++++++++++++++----------
src/qemu/qemu_monitor.c | 7 ++++---
src/qemu/qemu_monitor.h | 3 ++-
src/qemu/qemu_monitor_json.c | 4 +++-
src/qemu/qemu_monitor_json.h | 3 ++-
tests/qemumonitorjsontest.c | 2 +-
6 files changed, 44 insertions(+), 17 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index c9a865e..e063a42 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -3391,7 +3391,8 @@ cleanup:
}
static int qemuDumpToFd(virQEMUDriverPtr driver, virDomainObjPtr vm,
- int fd, enum qemuDomainAsyncJob asyncJob)
+ int fd, enum qemuDomainAsyncJob asyncJob,
+ const char* memory_dump_format)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
int ret = -1;
@@ -3411,7 +3412,7 @@ static int qemuDumpToFd(virQEMUDriverPtr driver, virDomainObjPtr vm,
if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
return -1;
- ret = qemuMonitorDumpToFd(priv->mon, fd);
+ ret = qemuMonitorDumpToFd(priv->mon, fd, memory_dump_format);
qemuDomainObjExitMonitor(driver, vm);
return ret;
@@ -3422,13 +3423,15 @@ doCoreDump(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *path,
virQEMUSaveFormat compress,
- unsigned int dump_flags)
+ unsigned int dump_flags,
+ unsigned int dumpformat)
{
int fd = -1;
int ret = -1;
virFileWrapperFdPtr wrapperFd = NULL;
int directFlag = 0;
unsigned int flags = VIR_FILE_WRAPPER_NON_BLOCKING;
+ const char *memory_dump_format;
/* Create an empty file with appropriate ownership. */
if (dump_flags & VIR_DUMP_BYPASS_CACHE) {
@@ -3452,7 +3455,16 @@ doCoreDump(virQEMUDriverPtr driver,
goto cleanup;
if (dump_flags & VIR_DUMP_MEMORY_ONLY) {
- ret = qemuDumpToFd(driver, vm, fd, QEMU_ASYNC_JOB_DUMP);
+ if (dumpformat == VIR_MEMORY_DUMP_COMPRESS_ZLIB)
+ memory_dump_format = "kdump-zlib";
+ else if (dumpformat == VIR_MEMORY_DUMP_COMPRESS_LZO)
+ memory_dump_format = "kdump-lzo";
+ else if (dumpformat == VIR_MEMORY_DUMP_COMPRESS_SNAPPY)
+ memory_dump_format = "kdump-snappy";
+ else
+ memory_dump_format = "elf";
+ ret = qemuDumpToFd(driver, vm, fd, QEMU_ASYNC_JOB_DUMP,
+ memory_dump_format);
} else {
ret = qemuMigrationToFile(driver, vm, fd, 0, path,
qemuCompressProgramName(compress), false,
@@ -3515,9 +3527,10 @@ cleanup:
return ret;
}
-static int qemuDomainCoreDump(virDomainPtr dom,
+static int qemuDomainMemoryDump(virDomainPtr dom,
const char *path,
- unsigned int flags)
+ unsigned int flags,
+ unsigned int dumpformat)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
@@ -3533,7 +3546,7 @@ static int qemuDomainCoreDump(virDomainPtr dom,
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
- if (virDomainCoreDumpEnsureACL(dom->conn, vm->def) < 0)
+ if (virDomainMemoryDumpEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAsyncJob(driver, vm,
@@ -3565,7 +3578,8 @@ static int qemuDomainCoreDump(virDomainPtr dom,
}
}
- ret = doCoreDump(driver, vm, path, getCompressionType(driver), flags);
+ ret = doCoreDump(driver, vm, path, getCompressionType(driver), flags,
+ dumpformat);
if (ret < 0)
goto endjob;
@@ -3619,6 +3633,13 @@ cleanup:
return ret;
}
+static int qemuDomainCoreDump(virDomainPtr dom,
+ const char *path,
+ unsigned int flags)
+{
+ return qemuDomainMemoryDump(dom, path, flags, 0);
+}
+
static char *
qemuDomainScreenshot(virDomainPtr dom,
virStreamPtr st,
@@ -3742,7 +3763,7 @@ static void processWatchdogEvent(virQEMUDriverPtr driver, virDomainObjPtr vm, in
flags |= cfg->autoDumpBypassCache ? VIR_DUMP_BYPASS_CACHE: 0;
ret = doCoreDump(driver, vm, dumpfile,
- getCompressionType(driver), flags);
+ getCompressionType(driver), flags, 0);
if (ret < 0)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("Dump failed"));
@@ -3806,7 +3827,7 @@ doCoreDumpToAutoDumpPath(virQEMUDriverPtr driver,
flags |= cfg->autoDumpBypassCache ? VIR_DUMP_BYPASS_CACHE: 0;
ret = doCoreDump(driver, vm, dumpfile,
- getCompressionType(driver), flags);
+ getCompressionType(driver), flags, 0);
if (ret < 0)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("Dump failed"));
@@ -16610,6 +16631,7 @@ static virDriver qemuDriver = {
.domainSaveImageGetXMLDesc = qemuDomainSaveImageGetXMLDesc, /* 0.9.4 */
.domainSaveImageDefineXML = qemuDomainSaveImageDefineXML, /* 0.9.4 */
.domainCoreDump = qemuDomainCoreDump, /* 0.7.0 */
+ .domainMemoryDump = qemuDomainMemoryDump, /* 1.2.3 */
.domainScreenshot = qemuDomainScreenshot, /* 0.9.2 */
.domainSetVcpus = qemuDomainSetVcpus, /* 0.4.4 */
.domainSetVcpusFlags = qemuDomainSetVcpusFlags, /* 0.8.5 */
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index a2769db..bcb457f 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -2345,10 +2345,11 @@ int qemuMonitorMigrateCancel(qemuMonitorPtr mon)
}
int
-qemuMonitorDumpToFd(qemuMonitorPtr mon, int fd)
+qemuMonitorDumpToFd(qemuMonitorPtr mon, int fd, const char* memory_dump_format)
{
int ret;
- VIR_DEBUG("mon=%p fd=%d", mon, fd);
+ VIR_DEBUG("mon=%p fd=%d memory_dump_format=%s", mon, fd,
+ memory_dump_format);
if (!mon) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
@@ -2368,7 +2369,7 @@ qemuMonitorDumpToFd(qemuMonitorPtr mon, int fd)
if (qemuMonitorSendFileHandle(mon, "dump", fd) < 0)
return -1;
- ret = qemuMonitorJSONDump(mon, "fd:dump");
+ ret = qemuMonitorJSONDump(mon, "fd:dump", memory_dump_format);
if (ret < 0) {
if (qemuMonitorCloseFileHandle(mon, "dump") < 0)
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index eabf000..a6fc8ee 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -495,7 +495,8 @@ int qemuMonitorMigrateToUnix(qemuMonitorPtr mon,
int qemuMonitorMigrateCancel(qemuMonitorPtr mon);
int qemuMonitorDumpToFd(qemuMonitorPtr mon,
- int fd);
+ int fd,
+ const char* memory_dump_format);
int qemuMonitorGraphicsRelocate(qemuMonitorPtr mon,
int type,
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index 5e825ac..f77b35a 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -2636,7 +2636,8 @@ int qemuMonitorJSONMigrateCancel(qemuMonitorPtr mon)
int
qemuMonitorJSONDump(qemuMonitorPtr mon,
- const char *protocol)
+ const char *protocol,
+ const char *memory_dump_format)
{
int ret;
virJSONValuePtr cmd = NULL;
@@ -2645,6 +2646,7 @@ qemuMonitorJSONDump(qemuMonitorPtr mon,
cmd = qemuMonitorJSONMakeCommand("dump-guest-memory",
"b:paging", false,
"s:protocol", protocol,
+ "s:format", memory_dump_format,
NULL);
if (!cmd)
return -1;
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index a93c51e..af6f666 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -148,7 +148,8 @@ int qemuMonitorJSONGetSpiceMigrationStatus(qemuMonitorPtr mon,
int qemuMonitorJSONMigrateCancel(qemuMonitorPtr mon);
int qemuMonitorJSONDump(qemuMonitorPtr mon,
- const char *protocol);
+ const char *protocol,
+ const char *memory_dump_format);
int qemuMonitorJSONGraphicsRelocate(qemuMonitorPtr mon,
int type,
diff --git a/tests/qemumonitorjsontest.c b/tests/qemumonitorjsontest.c
index d7da5a8..f21de84 100644
--- a/tests/qemumonitorjsontest.c
+++ b/tests/qemumonitorjsontest.c
@@ -1154,7 +1154,7 @@ GEN_TEST_FUNC(qemuMonitorJSONSetMigrationDowntime, 1)
GEN_TEST_FUNC(qemuMonitorJSONMigrate, QEMU_MONITOR_MIGRATE_BACKGROUND |
QEMU_MONITOR_MIGRATE_NON_SHARED_DISK |
QEMU_MONITOR_MIGRATE_NON_SHARED_INC, "tcp:localhost:12345")
-GEN_TEST_FUNC(qemuMonitorJSONDump, "dummy_protocol")
+GEN_TEST_FUNC(qemuMonitorJSONDump, "dummy_protocol", "dummy_memory_dump_format")
GEN_TEST_FUNC(qemuMonitorJSONGraphicsRelocate, VIR_DOMAIN_GRAPHICS_TYPE_SPICE,
"localhost", 12345, 12346, NULL)
GEN_TEST_FUNC(qemuMonitorJSONAddNetdev, "some_dummy_netdevstr")
--
1.8.5.3
--
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