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Re: [PATCH v3] migration: Drop redundant query-migrate result @blocked
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [PATCH v3] migration: Drop redundant query-migrate result @blocked |
Date: |
Tue, 11 May 2021 10:25:02 +0100 |
User-agent: |
Mutt/2.0.6 (2021-03-06) |
* Markus Armbruster (armbru@redhat.com) wrote:
> Result @blocked is redundant. Unfortunately, we realized this too
> close to the release to risk dropping it, so we deprecated it
> instead, in commit e11ce6c06.
>
> Since it was deprecated from the start, we can delete it without
> the customary grace period. Do so.
>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Queued
> ---
> v3: We picked the alternative "[PATCH] migration: Deprecate redundant
> query-migrate result @blocked" for 6.0 (commit e11ce6c065). v3 is
> v2 squashed into a clean revert that commit. I kept the R-bys for
> v1 and v2.
>
> v2: Commit message improved.
>
> qapi/migration.json | 6 ------
> migration/migration.c | 29 +++++++++++++----------------
> monitor/hmp-cmds.c | 2 +-
> 3 files changed, 14 insertions(+), 23 deletions(-)
>
> diff --git a/qapi/migration.json b/qapi/migration.json
> index 0b17cce46b..7a5bdf9a0d 100644
> --- a/qapi/migration.json
> +++ b/qapi/migration.json
> @@ -228,11 +228,6 @@
> # Present and non-empty when migration is blocked.
> # (since 6.0)
> #
> -# @blocked: True if outgoing migration is blocked (since 6.0)
> -#
> -# Features:
> -# @deprecated: Member @blocked is deprecated. Use @blocked-reasons instead.
> -#
> # Since: 0.14
> ##
> { 'struct': 'MigrationInfo',
> @@ -246,7 +241,6 @@
> '*setup-time': 'int',
> '*cpu-throttle-percentage': 'int',
> '*error-desc': 'str',
> - 'blocked': { 'type': 'bool', 'features': [ 'deprecated' ] },
> '*blocked-reasons': ['str'],
> '*postcopy-blocktime' : 'uint32',
> '*postcopy-vcpu-blocktime': ['uint32'],
> diff --git a/migration/migration.c b/migration/migration.c
> index 8ca034136b..fdadee290e 100644
> --- a/migration/migration.c
> +++ b/migration/migration.c
> @@ -1073,27 +1073,24 @@ static void populate_vfio_info(MigrationInfo *info)
> static void fill_source_migration_info(MigrationInfo *info)
> {
> MigrationState *s = migrate_get_current();
> + GSList *cur_blocker = migration_blockers;
>
> - info->blocked = migration_is_blocked(NULL);
> - info->has_blocked_reasons = info->blocked;
> info->blocked_reasons = NULL;
> - if (info->blocked) {
> - GSList *cur_blocker = migration_blockers;
>
> - /*
> - * There are two types of reasons a migration might be blocked;
> - * a) devices marked in VMState as non-migratable, and
> - * b) Explicit migration blockers
> - * We need to add both of them here.
> - */
> - qemu_savevm_non_migratable_list(&info->blocked_reasons);
> + /*
> + * There are two types of reasons a migration might be blocked;
> + * a) devices marked in VMState as non-migratable, and
> + * b) Explicit migration blockers
> + * We need to add both of them here.
> + */
> + qemu_savevm_non_migratable_list(&info->blocked_reasons);
>
> - while (cur_blocker) {
> - QAPI_LIST_PREPEND(info->blocked_reasons,
> - g_strdup(error_get_pretty(cur_blocker->data)));
> - cur_blocker = g_slist_next(cur_blocker);
> - }
> + while (cur_blocker) {
> + QAPI_LIST_PREPEND(info->blocked_reasons,
> + g_strdup(error_get_pretty(cur_blocker->data)));
> + cur_blocker = g_slist_next(cur_blocker);
> }
> + info->has_blocked_reasons = info->blocked_reasons != NULL;
>
> switch (s->state) {
> case MIGRATION_STATUS_NONE:
> diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
> index 0ad5b77477..d9bef63373 100644
> --- a/monitor/hmp-cmds.c
> +++ b/monitor/hmp-cmds.c
> @@ -224,7 +224,7 @@ void hmp_info_migrate(Monitor *mon, const QDict *qdict)
>
> migration_global_dump(mon);
>
> - if (info->blocked) {
> + if (info->blocked_reasons) {
> strList *reasons = info->blocked_reasons;
> monitor_printf(mon, "Outgoing migration blocked:\n");
> while (reasons) {
> --
> 2.26.3
>
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
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