diff mbox series

[v6,2/5] migration: migrate 'inc' command option is deprecated.

Message ID 20231017172307.22858-3-quintela@redhat.com (mailing list archive)
State New, archived
Headers show
Series Migration deprecated parts | expand

Commit Message

Juan Quintela Oct. 17, 2023, 5:23 p.m. UTC
Use blockdev-mirror with NBD instead.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 docs/about/deprecated.rst      | 9 +++++++++
 qapi/migration.json            | 8 +++++++-
 migration/migration-hmp-cmds.c | 5 +++++
 migration/migration.c          | 5 +++++
 4 files changed, 26 insertions(+), 1 deletion(-)

Comments

Markus Armbruster Oct. 18, 2023, 8:30 a.m. UTC | #1
Juan Quintela <quintela@redhat.com> writes:

> Use blockdev-mirror with NBD instead.
>
> Reviewed-by: Thomas Huth <thuth@redhat.com>
> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
> Reviewed-by: Markus Armbruster <armbru@redhat.com>
> Signed-off-by: Juan Quintela <quintela@redhat.com>
> ---
>  docs/about/deprecated.rst      | 9 +++++++++
>  qapi/migration.json            | 8 +++++++-
>  migration/migration-hmp-cmds.c | 5 +++++
>  migration/migration.c          | 5 +++++
>  4 files changed, 26 insertions(+), 1 deletion(-)
>
> diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
> index 2febd2d12f..b51136f50a 100644
> --- a/docs/about/deprecated.rst
> +++ b/docs/about/deprecated.rst
> @@ -461,3 +461,12 @@ Migration
>  ``skipped`` field in Migration stats has been deprecated.  It hasn't
>  been used for more than 10 years.
>  
> +``inc`` migrate command option (since 8.2)
> +''''''''''''''''''''''''''''''''''''''''''
> +
> +Use blockdev-mirror with NBD instead.
> +
> +As an intermediate step the ``inc`` functionality can be achieved by
> +setting the ``block-incremental`` migration parameter to ``true``.
> +But this parameter is also deprecated.
> +

If you need to respin for some other reason, drop the blank line at end
of file.  Same in later patches.

[...]
Juan Quintela Oct. 18, 2023, 10:22 a.m. UTC | #2
Markus Armbruster <armbru@redhat.com> wrote:
> Juan Quintela <quintela@redhat.com> writes:
>
>> Use blockdev-mirror with NBD instead.
>>
>> Reviewed-by: Thomas Huth <thuth@redhat.com>
>> Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
>> Reviewed-by: Markus Armbruster <armbru@redhat.com>
>> Signed-off-by: Juan Quintela <quintela@redhat.com>
>> ---
>>  docs/about/deprecated.rst      | 9 +++++++++
>>  qapi/migration.json            | 8 +++++++-
>>  migration/migration-hmp-cmds.c | 5 +++++
>>  migration/migration.c          | 5 +++++
>>  4 files changed, 26 insertions(+), 1 deletion(-)
>>
>> diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
>> index 2febd2d12f..b51136f50a 100644
>> --- a/docs/about/deprecated.rst
>> +++ b/docs/about/deprecated.rst
>> @@ -461,3 +461,12 @@ Migration
>>  ``skipped`` field in Migration stats has been deprecated.  It hasn't
>>  been used for more than 10 years.
>>  
>> +``inc`` migrate command option (since 8.2)
>> +''''''''''''''''''''''''''''''''''''''''''
>> +
>> +Use blockdev-mirror with NBD instead.
>> +
>> +As an intermediate step the ``inc`` functionality can be achieved by
>> +setting the ``block-incremental`` migration parameter to ``true``.
>> +But this parameter is also deprecated.
>> +
>
> If you need to respin for some other reason, drop the blank line at end
> of file.  Same in later patches.
>
> [...]

Done.

There is a tool, git-am maybe, that complains if files don't end in a
blank line.

You can't have happy everybody.

Later, Juan.
diff mbox series

Patch

diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst
index 2febd2d12f..b51136f50a 100644
--- a/docs/about/deprecated.rst
+++ b/docs/about/deprecated.rst
@@ -461,3 +461,12 @@  Migration
 ``skipped`` field in Migration stats has been deprecated.  It hasn't
 been used for more than 10 years.
 
+``inc`` migrate command option (since 8.2)
+''''''''''''''''''''''''''''''''''''''''''
+
+Use blockdev-mirror with NBD instead.
+
+As an intermediate step the ``inc`` functionality can be achieved by
+setting the ``block-incremental`` migration parameter to ``true``.
+But this parameter is also deprecated.
+
diff --git a/qapi/migration.json b/qapi/migration.json
index db3df12d6c..fa7f4f2575 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1524,6 +1524,11 @@ 
 #
 # @resume: resume one paused migration, default "off". (since 3.0)
 #
+# Features:
+#
+# @deprecated: Member @inc is deprecated.  Use blockdev-mirror with
+#     NBD instead.
+#
 # Returns: nothing on success
 #
 # Since: 0.14
@@ -1545,7 +1550,8 @@ 
 # <- { "return": {} }
 ##
 { 'command': 'migrate',
-  'data': {'uri': 'str', '*blk': 'bool', '*inc': 'bool',
+  'data': {'uri': 'str', '*blk': 'bool',
+           '*inc': { 'type': 'bool', 'features': [ 'deprecated' ] },
            '*detach': 'bool', '*resume': 'bool' } }
 
 ##
diff --git a/migration/migration-hmp-cmds.c b/migration/migration-hmp-cmds.c
index a82597f18e..83176f5bae 100644
--- a/migration/migration-hmp-cmds.c
+++ b/migration/migration-hmp-cmds.c
@@ -745,6 +745,11 @@  void hmp_migrate(Monitor *mon, const QDict *qdict)
     const char *uri = qdict_get_str(qdict, "uri");
     Error *err = NULL;
 
+    if (inc) {
+        warn_report("option '-i' is deprecated;"
+                    " use blockdev-mirror with NBD instead");
+    }
+
     qmp_migrate(uri, !!blk, blk, !!inc, inc,
                 false, false, true, resume, &err);
     if (hmp_handle_error(mon, err)) {
diff --git a/migration/migration.c b/migration/migration.c
index 6ba5e145ac..e54baf9102 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -1603,6 +1603,11 @@  static bool migrate_prepare(MigrationState *s, bool blk, bool blk_inc,
 {
     Error *local_err = NULL;
 
+    if (blk_inc) {
+        warn_report("parameter 'inc' is deprecated;"
+                    " use blockdev-mirror with NBD instead");
+    }
+
     if (resume) {
         if (s->state != MIGRATION_STATUS_POSTCOPY_PAUSED) {
             error_setg(errp, "Cannot resume if there is no "