74c38cf7fd
Instead of print it to STDERR, bring the error upwards so that it can be
reported via QMP responses.
E.g.:
{ "execute": "migrate-set-capabilities" ,
"arguments": { "capabilities":
[ { "capability": "postcopy-ram", "state": true } ] } }
{ "error":
{ "class": "GenericError",
"desc": "Postcopy is not supported: Host backend files need to be TMPFS
or HUGETLBFS only" } }
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
1153 lines
32 KiB
C
1153 lines
32 KiB
C
/*
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* QEMU migration capabilities
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*
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* Copyright (c) 2012-2023 Red Hat Inc
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*
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* Authors:
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* Orit Wasserman <owasserm@redhat.com>
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* Juan Quintela <quintela@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "exec/target_page.h"
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#include "qapi/clone-visitor.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-migration.h"
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#include "qapi/qapi-visit-migration.h"
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#include "qapi/qmp/qerror.h"
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#include "qapi/qmp/qnull.h"
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#include "sysemu/runstate.h"
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#include "migration/colo.h"
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#include "migration/misc.h"
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#include "migration.h"
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#include "qemu-file.h"
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#include "ram.h"
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#include "options.h"
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/* Maximum migrate downtime set to 2000 seconds */
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#define MAX_MIGRATE_DOWNTIME_SECONDS 2000
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#define MAX_MIGRATE_DOWNTIME (MAX_MIGRATE_DOWNTIME_SECONDS * 1000)
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bool migrate_auto_converge(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_AUTO_CONVERGE];
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}
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bool migrate_background_snapshot(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_BACKGROUND_SNAPSHOT];
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}
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bool migrate_block(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_BLOCK];
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}
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bool migrate_colo(void)
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{
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MigrationState *s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_X_COLO];
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}
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bool migrate_compress(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_COMPRESS];
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}
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bool migrate_dirty_bitmaps(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_DIRTY_BITMAPS];
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}
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bool migrate_events(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_EVENTS];
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}
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bool migrate_ignore_shared(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_X_IGNORE_SHARED];
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}
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bool migrate_late_block_activate(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_LATE_BLOCK_ACTIVATE];
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}
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bool migrate_multifd(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_MULTIFD];
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}
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bool migrate_pause_before_switchover(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_PAUSE_BEFORE_SWITCHOVER];
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}
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bool migrate_postcopy_blocktime(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME];
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}
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bool migrate_postcopy_preempt(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_POSTCOPY_PREEMPT];
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}
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bool migrate_postcopy_ram(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_POSTCOPY_RAM];
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}
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bool migrate_rdma_pin_all(void)
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{
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MigrationState *s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_RDMA_PIN_ALL];
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}
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bool migrate_release_ram(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_RELEASE_RAM];
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}
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bool migrate_return_path(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_RETURN_PATH];
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}
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bool migrate_validate_uuid(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_VALIDATE_UUID];
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}
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bool migrate_xbzrle(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_XBZRLE];
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}
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bool migrate_zero_blocks(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_ZERO_BLOCKS];
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}
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bool migrate_zero_copy_send(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->capabilities[MIGRATION_CAPABILITY_ZERO_COPY_SEND];
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}
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/* pseudo capabilities */
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bool migrate_postcopy(void)
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{
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return migrate_postcopy_ram() || migrate_dirty_bitmaps();
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}
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bool migrate_tls(void)
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->parameters.tls_creds && *s->parameters.tls_creds;
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}
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typedef enum WriteTrackingSupport {
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WT_SUPPORT_UNKNOWN = 0,
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WT_SUPPORT_ABSENT,
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WT_SUPPORT_AVAILABLE,
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WT_SUPPORT_COMPATIBLE
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} WriteTrackingSupport;
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static
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WriteTrackingSupport migrate_query_write_tracking(void)
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{
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/* Check if kernel supports required UFFD features */
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if (!ram_write_tracking_available()) {
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return WT_SUPPORT_ABSENT;
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}
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/*
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* Check if current memory configuration is
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* compatible with required UFFD features.
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*/
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if (!ram_write_tracking_compatible()) {
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return WT_SUPPORT_AVAILABLE;
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}
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return WT_SUPPORT_COMPATIBLE;
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}
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/* Migration capabilities set */
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struct MigrateCapsSet {
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int size; /* Capability set size */
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MigrationCapability caps[]; /* Variadic array of capabilities */
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};
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typedef struct MigrateCapsSet MigrateCapsSet;
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/* Define and initialize MigrateCapsSet */
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#define INITIALIZE_MIGRATE_CAPS_SET(_name, ...) \
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MigrateCapsSet _name = { \
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.size = sizeof((int []) { __VA_ARGS__ }) / sizeof(int), \
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.caps = { __VA_ARGS__ } \
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}
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/* Background-snapshot compatibility check list */
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static const
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INITIALIZE_MIGRATE_CAPS_SET(check_caps_background_snapshot,
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MIGRATION_CAPABILITY_POSTCOPY_RAM,
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MIGRATION_CAPABILITY_DIRTY_BITMAPS,
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MIGRATION_CAPABILITY_POSTCOPY_BLOCKTIME,
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MIGRATION_CAPABILITY_LATE_BLOCK_ACTIVATE,
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MIGRATION_CAPABILITY_RETURN_PATH,
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MIGRATION_CAPABILITY_MULTIFD,
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MIGRATION_CAPABILITY_PAUSE_BEFORE_SWITCHOVER,
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MIGRATION_CAPABILITY_AUTO_CONVERGE,
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MIGRATION_CAPABILITY_RELEASE_RAM,
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MIGRATION_CAPABILITY_RDMA_PIN_ALL,
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MIGRATION_CAPABILITY_COMPRESS,
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MIGRATION_CAPABILITY_XBZRLE,
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MIGRATION_CAPABILITY_X_COLO,
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MIGRATION_CAPABILITY_VALIDATE_UUID,
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MIGRATION_CAPABILITY_ZERO_COPY_SEND);
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/**
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* @migration_caps_check - check capability compatibility
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*
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* @old_caps: old capability list
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* @new_caps: new capability list
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* @errp: set *errp if the check failed, with reason
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*
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* Returns true if check passed, otherwise false.
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*/
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bool migrate_caps_check(bool *old_caps, bool *new_caps, Error **errp)
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{
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MigrationIncomingState *mis = migration_incoming_get_current();
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ERRP_GUARD();
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#ifndef CONFIG_LIVE_BLOCK_MIGRATION
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if (new_caps[MIGRATION_CAPABILITY_BLOCK]) {
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error_setg(errp, "QEMU compiled without old-style (blk/-b, inc/-i) "
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"block migration");
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error_append_hint(errp, "Use drive_mirror+NBD instead.\n");
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return false;
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}
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#endif
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#ifndef CONFIG_REPLICATION
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if (new_caps[MIGRATION_CAPABILITY_X_COLO]) {
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error_setg(errp, "QEMU compiled without replication module"
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" can't enable COLO");
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error_append_hint(errp, "Please enable replication before COLO.\n");
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return false;
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}
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#endif
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if (new_caps[MIGRATION_CAPABILITY_POSTCOPY_RAM]) {
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/* This check is reasonably expensive, so only when it's being
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* set the first time, also it's only the destination that needs
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* special support.
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*/
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if (!old_caps[MIGRATION_CAPABILITY_POSTCOPY_RAM] &&
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runstate_check(RUN_STATE_INMIGRATE) &&
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!postcopy_ram_supported_by_host(mis, errp)) {
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error_prepend(errp, "Postcopy is not supported: ");
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return false;
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}
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if (new_caps[MIGRATION_CAPABILITY_X_IGNORE_SHARED]) {
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error_setg(errp, "Postcopy is not compatible with ignore-shared");
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return false;
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}
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if (new_caps[MIGRATION_CAPABILITY_MULTIFD]) {
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error_setg(errp, "Postcopy is not yet compatible with multifd");
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return false;
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}
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}
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if (new_caps[MIGRATION_CAPABILITY_BACKGROUND_SNAPSHOT]) {
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WriteTrackingSupport wt_support;
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int idx;
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/*
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* Check if 'background-snapshot' capability is supported by
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* host kernel and compatible with guest memory configuration.
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*/
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wt_support = migrate_query_write_tracking();
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if (wt_support < WT_SUPPORT_AVAILABLE) {
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error_setg(errp, "Background-snapshot is not supported by host kernel");
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return false;
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}
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if (wt_support < WT_SUPPORT_COMPATIBLE) {
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error_setg(errp, "Background-snapshot is not compatible "
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"with guest memory configuration");
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return false;
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}
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/*
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* Check if there are any migration capabilities
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* incompatible with 'background-snapshot'.
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*/
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for (idx = 0; idx < check_caps_background_snapshot.size; idx++) {
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int incomp_cap = check_caps_background_snapshot.caps[idx];
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if (new_caps[incomp_cap]) {
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error_setg(errp,
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"Background-snapshot is not compatible with %s",
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MigrationCapability_str(incomp_cap));
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return false;
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}
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}
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}
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#ifdef CONFIG_LINUX
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if (new_caps[MIGRATION_CAPABILITY_ZERO_COPY_SEND] &&
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(!new_caps[MIGRATION_CAPABILITY_MULTIFD] ||
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new_caps[MIGRATION_CAPABILITY_COMPRESS] ||
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new_caps[MIGRATION_CAPABILITY_XBZRLE] ||
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migrate_multifd_compression() ||
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migrate_tls())) {
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error_setg(errp,
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"Zero copy only available for non-compressed non-TLS multifd migration");
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return false;
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}
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#else
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if (new_caps[MIGRATION_CAPABILITY_ZERO_COPY_SEND]) {
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error_setg(errp,
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"Zero copy currently only available on Linux");
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return false;
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}
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#endif
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if (new_caps[MIGRATION_CAPABILITY_POSTCOPY_PREEMPT]) {
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if (!new_caps[MIGRATION_CAPABILITY_POSTCOPY_RAM]) {
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error_setg(errp, "Postcopy preempt requires postcopy-ram");
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return false;
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}
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/*
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* Preempt mode requires urgent pages to be sent in separate
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* channel, OTOH compression logic will disorder all pages into
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* different compression channels, which is not compatible with the
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* preempt assumptions on channel assignments.
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*/
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if (new_caps[MIGRATION_CAPABILITY_COMPRESS]) {
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error_setg(errp, "Postcopy preempt not compatible with compress");
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return false;
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}
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}
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if (new_caps[MIGRATION_CAPABILITY_MULTIFD]) {
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if (new_caps[MIGRATION_CAPABILITY_COMPRESS]) {
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error_setg(errp, "Multifd is not compatible with compress");
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return false;
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}
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}
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return true;
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}
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bool migrate_cap_set(int cap, bool value, Error **errp)
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{
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MigrationState *s = migrate_get_current();
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bool new_caps[MIGRATION_CAPABILITY__MAX];
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if (migration_is_running(s->state)) {
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error_setg(errp, QERR_MIGRATION_ACTIVE);
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return false;
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}
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memcpy(new_caps, s->capabilities, sizeof(new_caps));
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new_caps[cap] = value;
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if (!migrate_caps_check(s->capabilities, new_caps, errp)) {
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return false;
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}
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s->capabilities[cap] = value;
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return true;
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}
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MigrationCapabilityStatusList *qmp_query_migrate_capabilities(Error **errp)
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{
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MigrationCapabilityStatusList *head = NULL, **tail = &head;
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MigrationCapabilityStatus *caps;
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MigrationState *s = migrate_get_current();
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int i;
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for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
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#ifndef CONFIG_LIVE_BLOCK_MIGRATION
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if (i == MIGRATION_CAPABILITY_BLOCK) {
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continue;
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}
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#endif
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caps = g_malloc0(sizeof(*caps));
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caps->capability = i;
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caps->state = s->capabilities[i];
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QAPI_LIST_APPEND(tail, caps);
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}
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return head;
|
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}
|
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|
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void qmp_migrate_set_capabilities(MigrationCapabilityStatusList *params,
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Error **errp)
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{
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MigrationState *s = migrate_get_current();
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MigrationCapabilityStatusList *cap;
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bool new_caps[MIGRATION_CAPABILITY__MAX];
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|
|
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if (migration_is_running(s->state)) {
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error_setg(errp, QERR_MIGRATION_ACTIVE);
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return;
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}
|
|
|
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memcpy(new_caps, s->capabilities, sizeof(new_caps));
|
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for (cap = params; cap; cap = cap->next) {
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new_caps[cap->value->capability] = cap->value->state;
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}
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|
|
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if (!migrate_caps_check(s->capabilities, new_caps, errp)) {
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return;
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}
|
|
|
|
for (cap = params; cap; cap = cap->next) {
|
|
s->capabilities[cap->value->capability] = cap->value->state;
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}
|
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}
|
|
|
|
/* parameters */
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|
|
|
bool migrate_block_incremental(void)
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{
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|
MigrationState *s;
|
|
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s = migrate_get_current();
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return s->parameters.block_incremental;
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|
}
|
|
|
|
uint32_t migrate_checkpoint_delay(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
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|
|
|
return s->parameters.x_checkpoint_delay;
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|
}
|
|
|
|
int migrate_compress_level(void)
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|
{
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|
MigrationState *s;
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s = migrate_get_current();
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return s->parameters.compress_level;
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}
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|
|
|
int migrate_compress_threads(void)
|
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{
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MigrationState *s;
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s = migrate_get_current();
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return s->parameters.compress_threads;
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}
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|
|
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int migrate_compress_wait_thread(void)
|
|
{
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MigrationState *s;
|
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|
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s = migrate_get_current();
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return s->parameters.compress_wait_thread;
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}
|
|
|
|
uint8_t migrate_cpu_throttle_increment(void)
|
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{
|
|
MigrationState *s;
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s = migrate_get_current();
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return s->parameters.cpu_throttle_increment;
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}
|
|
|
|
uint8_t migrate_cpu_throttle_initial(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.cpu_throttle_initial;
|
|
}
|
|
|
|
bool migrate_cpu_throttle_tailslow(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.cpu_throttle_tailslow;
|
|
}
|
|
|
|
int migrate_decompress_threads(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.decompress_threads;
|
|
}
|
|
|
|
uint8_t migrate_max_cpu_throttle(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.max_cpu_throttle;
|
|
}
|
|
|
|
uint64_t migrate_max_bandwidth(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.max_bandwidth;
|
|
}
|
|
|
|
int64_t migrate_max_postcopy_bandwidth(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.max_postcopy_bandwidth;
|
|
}
|
|
|
|
int migrate_multifd_channels(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.multifd_channels;
|
|
}
|
|
|
|
MultiFDCompression migrate_multifd_compression(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
assert(s->parameters.multifd_compression < MULTIFD_COMPRESSION__MAX);
|
|
return s->parameters.multifd_compression;
|
|
}
|
|
|
|
int migrate_multifd_zlib_level(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.multifd_zlib_level;
|
|
}
|
|
|
|
int migrate_multifd_zstd_level(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.multifd_zstd_level;
|
|
}
|
|
|
|
uint8_t migrate_throttle_trigger_threshold(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.throttle_trigger_threshold;
|
|
}
|
|
|
|
uint64_t migrate_xbzrle_cache_size(void)
|
|
{
|
|
MigrationState *s;
|
|
|
|
s = migrate_get_current();
|
|
|
|
return s->parameters.xbzrle_cache_size;
|
|
}
|
|
|
|
/* parameters helpers */
|
|
|
|
AnnounceParameters *migrate_announce_params(void)
|
|
{
|
|
static AnnounceParameters ap;
|
|
|
|
MigrationState *s = migrate_get_current();
|
|
|
|
ap.initial = s->parameters.announce_initial;
|
|
ap.max = s->parameters.announce_max;
|
|
ap.rounds = s->parameters.announce_rounds;
|
|
ap.step = s->parameters.announce_step;
|
|
|
|
return ≈
|
|
}
|
|
|
|
MigrationParameters *qmp_query_migrate_parameters(Error **errp)
|
|
{
|
|
MigrationParameters *params;
|
|
MigrationState *s = migrate_get_current();
|
|
|
|
/* TODO use QAPI_CLONE() instead of duplicating it inline */
|
|
params = g_malloc0(sizeof(*params));
|
|
params->has_compress_level = true;
|
|
params->compress_level = s->parameters.compress_level;
|
|
params->has_compress_threads = true;
|
|
params->compress_threads = s->parameters.compress_threads;
|
|
params->has_compress_wait_thread = true;
|
|
params->compress_wait_thread = s->parameters.compress_wait_thread;
|
|
params->has_decompress_threads = true;
|
|
params->decompress_threads = s->parameters.decompress_threads;
|
|
params->has_throttle_trigger_threshold = true;
|
|
params->throttle_trigger_threshold = s->parameters.throttle_trigger_threshold;
|
|
params->has_cpu_throttle_initial = true;
|
|
params->cpu_throttle_initial = s->parameters.cpu_throttle_initial;
|
|
params->has_cpu_throttle_increment = true;
|
|
params->cpu_throttle_increment = s->parameters.cpu_throttle_increment;
|
|
params->has_cpu_throttle_tailslow = true;
|
|
params->cpu_throttle_tailslow = s->parameters.cpu_throttle_tailslow;
|
|
params->tls_creds = g_strdup(s->parameters.tls_creds);
|
|
params->tls_hostname = g_strdup(s->parameters.tls_hostname);
|
|
params->tls_authz = g_strdup(s->parameters.tls_authz ?
|
|
s->parameters.tls_authz : "");
|
|
params->has_max_bandwidth = true;
|
|
params->max_bandwidth = s->parameters.max_bandwidth;
|
|
params->has_downtime_limit = true;
|
|
params->downtime_limit = s->parameters.downtime_limit;
|
|
params->has_x_checkpoint_delay = true;
|
|
params->x_checkpoint_delay = s->parameters.x_checkpoint_delay;
|
|
params->has_block_incremental = true;
|
|
params->block_incremental = s->parameters.block_incremental;
|
|
params->has_multifd_channels = true;
|
|
params->multifd_channels = s->parameters.multifd_channels;
|
|
params->has_multifd_compression = true;
|
|
params->multifd_compression = s->parameters.multifd_compression;
|
|
params->has_multifd_zlib_level = true;
|
|
params->multifd_zlib_level = s->parameters.multifd_zlib_level;
|
|
params->has_multifd_zstd_level = true;
|
|
params->multifd_zstd_level = s->parameters.multifd_zstd_level;
|
|
params->has_xbzrle_cache_size = true;
|
|
params->xbzrle_cache_size = s->parameters.xbzrle_cache_size;
|
|
params->has_max_postcopy_bandwidth = true;
|
|
params->max_postcopy_bandwidth = s->parameters.max_postcopy_bandwidth;
|
|
params->has_max_cpu_throttle = true;
|
|
params->max_cpu_throttle = s->parameters.max_cpu_throttle;
|
|
params->has_announce_initial = true;
|
|
params->announce_initial = s->parameters.announce_initial;
|
|
params->has_announce_max = true;
|
|
params->announce_max = s->parameters.announce_max;
|
|
params->has_announce_rounds = true;
|
|
params->announce_rounds = s->parameters.announce_rounds;
|
|
params->has_announce_step = true;
|
|
params->announce_step = s->parameters.announce_step;
|
|
|
|
if (s->parameters.has_block_bitmap_mapping) {
|
|
params->has_block_bitmap_mapping = true;
|
|
params->block_bitmap_mapping =
|
|
QAPI_CLONE(BitmapMigrationNodeAliasList,
|
|
s->parameters.block_bitmap_mapping);
|
|
}
|
|
|
|
return params;
|
|
}
|
|
|
|
/*
|
|
* Check whether the parameters are valid. Error will be put into errp
|
|
* (if provided). Return true if valid, otherwise false.
|
|
*/
|
|
bool migrate_params_check(MigrationParameters *params, Error **errp)
|
|
{
|
|
if (params->has_compress_level &&
|
|
(params->compress_level > 9)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "compress_level",
|
|
"a value between 0 and 9");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_compress_threads && (params->compress_threads < 1)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"compress_threads",
|
|
"a value between 1 and 255");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_decompress_threads && (params->decompress_threads < 1)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"decompress_threads",
|
|
"a value between 1 and 255");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_throttle_trigger_threshold &&
|
|
(params->throttle_trigger_threshold < 1 ||
|
|
params->throttle_trigger_threshold > 100)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"throttle_trigger_threshold",
|
|
"an integer in the range of 1 to 100");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_cpu_throttle_initial &&
|
|
(params->cpu_throttle_initial < 1 ||
|
|
params->cpu_throttle_initial > 99)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"cpu_throttle_initial",
|
|
"an integer in the range of 1 to 99");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_cpu_throttle_increment &&
|
|
(params->cpu_throttle_increment < 1 ||
|
|
params->cpu_throttle_increment > 99)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"cpu_throttle_increment",
|
|
"an integer in the range of 1 to 99");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_max_bandwidth && (params->max_bandwidth > SIZE_MAX)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"max_bandwidth",
|
|
"an integer in the range of 0 to "stringify(SIZE_MAX)
|
|
" bytes/second");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_downtime_limit &&
|
|
(params->downtime_limit > MAX_MIGRATE_DOWNTIME)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"downtime_limit",
|
|
"an integer in the range of 0 to "
|
|
stringify(MAX_MIGRATE_DOWNTIME)" ms");
|
|
return false;
|
|
}
|
|
|
|
/* x_checkpoint_delay is now always positive */
|
|
|
|
if (params->has_multifd_channels && (params->multifd_channels < 1)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"multifd_channels",
|
|
"a value between 1 and 255");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_multifd_zlib_level &&
|
|
(params->multifd_zlib_level > 9)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "multifd_zlib_level",
|
|
"a value between 0 and 9");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_multifd_zstd_level &&
|
|
(params->multifd_zstd_level > 20)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "multifd_zstd_level",
|
|
"a value between 0 and 20");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_xbzrle_cache_size &&
|
|
(params->xbzrle_cache_size < qemu_target_page_size() ||
|
|
!is_power_of_2(params->xbzrle_cache_size))) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"xbzrle_cache_size",
|
|
"a power of two no less than the target page size");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_max_cpu_throttle &&
|
|
(params->max_cpu_throttle < params->cpu_throttle_initial ||
|
|
params->max_cpu_throttle > 99)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"max_cpu_throttle",
|
|
"an integer in the range of cpu_throttle_initial to 99");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_announce_initial &&
|
|
params->announce_initial > 100000) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"announce_initial",
|
|
"a value between 0 and 100000");
|
|
return false;
|
|
}
|
|
if (params->has_announce_max &&
|
|
params->announce_max > 100000) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"announce_max",
|
|
"a value between 0 and 100000");
|
|
return false;
|
|
}
|
|
if (params->has_announce_rounds &&
|
|
params->announce_rounds > 1000) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"announce_rounds",
|
|
"a value between 0 and 1000");
|
|
return false;
|
|
}
|
|
if (params->has_announce_step &&
|
|
(params->announce_step < 1 ||
|
|
params->announce_step > 10000)) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
|
|
"announce_step",
|
|
"a value between 0 and 10000");
|
|
return false;
|
|
}
|
|
|
|
if (params->has_block_bitmap_mapping &&
|
|
!check_dirty_bitmap_mig_alias_map(params->block_bitmap_mapping, errp)) {
|
|
error_prepend(errp, "Invalid mapping given for block-bitmap-mapping: ");
|
|
return false;
|
|
}
|
|
|
|
#ifdef CONFIG_LINUX
|
|
if (migrate_zero_copy_send() &&
|
|
((params->has_multifd_compression && params->multifd_compression) ||
|
|
(params->tls_creds && *params->tls_creds))) {
|
|
error_setg(errp,
|
|
"Zero copy only available for non-compressed non-TLS multifd migration");
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
static void migrate_params_test_apply(MigrateSetParameters *params,
|
|
MigrationParameters *dest)
|
|
{
|
|
*dest = migrate_get_current()->parameters;
|
|
|
|
/* TODO use QAPI_CLONE() instead of duplicating it inline */
|
|
|
|
if (params->has_compress_level) {
|
|
dest->compress_level = params->compress_level;
|
|
}
|
|
|
|
if (params->has_compress_threads) {
|
|
dest->compress_threads = params->compress_threads;
|
|
}
|
|
|
|
if (params->has_compress_wait_thread) {
|
|
dest->compress_wait_thread = params->compress_wait_thread;
|
|
}
|
|
|
|
if (params->has_decompress_threads) {
|
|
dest->decompress_threads = params->decompress_threads;
|
|
}
|
|
|
|
if (params->has_throttle_trigger_threshold) {
|
|
dest->throttle_trigger_threshold = params->throttle_trigger_threshold;
|
|
}
|
|
|
|
if (params->has_cpu_throttle_initial) {
|
|
dest->cpu_throttle_initial = params->cpu_throttle_initial;
|
|
}
|
|
|
|
if (params->has_cpu_throttle_increment) {
|
|
dest->cpu_throttle_increment = params->cpu_throttle_increment;
|
|
}
|
|
|
|
if (params->has_cpu_throttle_tailslow) {
|
|
dest->cpu_throttle_tailslow = params->cpu_throttle_tailslow;
|
|
}
|
|
|
|
if (params->tls_creds) {
|
|
assert(params->tls_creds->type == QTYPE_QSTRING);
|
|
dest->tls_creds = params->tls_creds->u.s;
|
|
}
|
|
|
|
if (params->tls_hostname) {
|
|
assert(params->tls_hostname->type == QTYPE_QSTRING);
|
|
dest->tls_hostname = params->tls_hostname->u.s;
|
|
}
|
|
|
|
if (params->has_max_bandwidth) {
|
|
dest->max_bandwidth = params->max_bandwidth;
|
|
}
|
|
|
|
if (params->has_downtime_limit) {
|
|
dest->downtime_limit = params->downtime_limit;
|
|
}
|
|
|
|
if (params->has_x_checkpoint_delay) {
|
|
dest->x_checkpoint_delay = params->x_checkpoint_delay;
|
|
}
|
|
|
|
if (params->has_block_incremental) {
|
|
dest->block_incremental = params->block_incremental;
|
|
}
|
|
if (params->has_multifd_channels) {
|
|
dest->multifd_channels = params->multifd_channels;
|
|
}
|
|
if (params->has_multifd_compression) {
|
|
dest->multifd_compression = params->multifd_compression;
|
|
}
|
|
if (params->has_xbzrle_cache_size) {
|
|
dest->xbzrle_cache_size = params->xbzrle_cache_size;
|
|
}
|
|
if (params->has_max_postcopy_bandwidth) {
|
|
dest->max_postcopy_bandwidth = params->max_postcopy_bandwidth;
|
|
}
|
|
if (params->has_max_cpu_throttle) {
|
|
dest->max_cpu_throttle = params->max_cpu_throttle;
|
|
}
|
|
if (params->has_announce_initial) {
|
|
dest->announce_initial = params->announce_initial;
|
|
}
|
|
if (params->has_announce_max) {
|
|
dest->announce_max = params->announce_max;
|
|
}
|
|
if (params->has_announce_rounds) {
|
|
dest->announce_rounds = params->announce_rounds;
|
|
}
|
|
if (params->has_announce_step) {
|
|
dest->announce_step = params->announce_step;
|
|
}
|
|
|
|
if (params->has_block_bitmap_mapping) {
|
|
dest->has_block_bitmap_mapping = true;
|
|
dest->block_bitmap_mapping = params->block_bitmap_mapping;
|
|
}
|
|
}
|
|
|
|
static void migrate_params_apply(MigrateSetParameters *params, Error **errp)
|
|
{
|
|
MigrationState *s = migrate_get_current();
|
|
|
|
/* TODO use QAPI_CLONE() instead of duplicating it inline */
|
|
|
|
if (params->has_compress_level) {
|
|
s->parameters.compress_level = params->compress_level;
|
|
}
|
|
|
|
if (params->has_compress_threads) {
|
|
s->parameters.compress_threads = params->compress_threads;
|
|
}
|
|
|
|
if (params->has_compress_wait_thread) {
|
|
s->parameters.compress_wait_thread = params->compress_wait_thread;
|
|
}
|
|
|
|
if (params->has_decompress_threads) {
|
|
s->parameters.decompress_threads = params->decompress_threads;
|
|
}
|
|
|
|
if (params->has_throttle_trigger_threshold) {
|
|
s->parameters.throttle_trigger_threshold = params->throttle_trigger_threshold;
|
|
}
|
|
|
|
if (params->has_cpu_throttle_initial) {
|
|
s->parameters.cpu_throttle_initial = params->cpu_throttle_initial;
|
|
}
|
|
|
|
if (params->has_cpu_throttle_increment) {
|
|
s->parameters.cpu_throttle_increment = params->cpu_throttle_increment;
|
|
}
|
|
|
|
if (params->has_cpu_throttle_tailslow) {
|
|
s->parameters.cpu_throttle_tailslow = params->cpu_throttle_tailslow;
|
|
}
|
|
|
|
if (params->tls_creds) {
|
|
g_free(s->parameters.tls_creds);
|
|
assert(params->tls_creds->type == QTYPE_QSTRING);
|
|
s->parameters.tls_creds = g_strdup(params->tls_creds->u.s);
|
|
}
|
|
|
|
if (params->tls_hostname) {
|
|
g_free(s->parameters.tls_hostname);
|
|
assert(params->tls_hostname->type == QTYPE_QSTRING);
|
|
s->parameters.tls_hostname = g_strdup(params->tls_hostname->u.s);
|
|
}
|
|
|
|
if (params->tls_authz) {
|
|
g_free(s->parameters.tls_authz);
|
|
assert(params->tls_authz->type == QTYPE_QSTRING);
|
|
s->parameters.tls_authz = g_strdup(params->tls_authz->u.s);
|
|
}
|
|
|
|
if (params->has_max_bandwidth) {
|
|
s->parameters.max_bandwidth = params->max_bandwidth;
|
|
if (s->to_dst_file && !migration_in_postcopy()) {
|
|
qemu_file_set_rate_limit(s->to_dst_file,
|
|
s->parameters.max_bandwidth / XFER_LIMIT_RATIO);
|
|
}
|
|
}
|
|
|
|
if (params->has_downtime_limit) {
|
|
s->parameters.downtime_limit = params->downtime_limit;
|
|
}
|
|
|
|
if (params->has_x_checkpoint_delay) {
|
|
s->parameters.x_checkpoint_delay = params->x_checkpoint_delay;
|
|
if (migration_in_colo_state()) {
|
|
colo_checkpoint_notify(s);
|
|
}
|
|
}
|
|
|
|
if (params->has_block_incremental) {
|
|
s->parameters.block_incremental = params->block_incremental;
|
|
}
|
|
if (params->has_multifd_channels) {
|
|
s->parameters.multifd_channels = params->multifd_channels;
|
|
}
|
|
if (params->has_multifd_compression) {
|
|
s->parameters.multifd_compression = params->multifd_compression;
|
|
}
|
|
if (params->has_xbzrle_cache_size) {
|
|
s->parameters.xbzrle_cache_size = params->xbzrle_cache_size;
|
|
xbzrle_cache_resize(params->xbzrle_cache_size, errp);
|
|
}
|
|
if (params->has_max_postcopy_bandwidth) {
|
|
s->parameters.max_postcopy_bandwidth = params->max_postcopy_bandwidth;
|
|
if (s->to_dst_file && migration_in_postcopy()) {
|
|
qemu_file_set_rate_limit(s->to_dst_file,
|
|
s->parameters.max_postcopy_bandwidth / XFER_LIMIT_RATIO);
|
|
}
|
|
}
|
|
if (params->has_max_cpu_throttle) {
|
|
s->parameters.max_cpu_throttle = params->max_cpu_throttle;
|
|
}
|
|
if (params->has_announce_initial) {
|
|
s->parameters.announce_initial = params->announce_initial;
|
|
}
|
|
if (params->has_announce_max) {
|
|
s->parameters.announce_max = params->announce_max;
|
|
}
|
|
if (params->has_announce_rounds) {
|
|
s->parameters.announce_rounds = params->announce_rounds;
|
|
}
|
|
if (params->has_announce_step) {
|
|
s->parameters.announce_step = params->announce_step;
|
|
}
|
|
|
|
if (params->has_block_bitmap_mapping) {
|
|
qapi_free_BitmapMigrationNodeAliasList(
|
|
s->parameters.block_bitmap_mapping);
|
|
|
|
s->parameters.has_block_bitmap_mapping = true;
|
|
s->parameters.block_bitmap_mapping =
|
|
QAPI_CLONE(BitmapMigrationNodeAliasList,
|
|
params->block_bitmap_mapping);
|
|
}
|
|
}
|
|
|
|
void qmp_migrate_set_parameters(MigrateSetParameters *params, Error **errp)
|
|
{
|
|
MigrationParameters tmp;
|
|
|
|
/* TODO Rewrite "" to null instead */
|
|
if (params->tls_creds
|
|
&& params->tls_creds->type == QTYPE_QNULL) {
|
|
qobject_unref(params->tls_creds->u.n);
|
|
params->tls_creds->type = QTYPE_QSTRING;
|
|
params->tls_creds->u.s = strdup("");
|
|
}
|
|
/* TODO Rewrite "" to null instead */
|
|
if (params->tls_hostname
|
|
&& params->tls_hostname->type == QTYPE_QNULL) {
|
|
qobject_unref(params->tls_hostname->u.n);
|
|
params->tls_hostname->type = QTYPE_QSTRING;
|
|
params->tls_hostname->u.s = strdup("");
|
|
}
|
|
|
|
migrate_params_test_apply(params, &tmp);
|
|
|
|
if (!migrate_params_check(&tmp, errp)) {
|
|
/* Invalid parameter */
|
|
return;
|
|
}
|
|
|
|
migrate_params_apply(params, errp);
|
|
}
|