On 10/10/2023 2:38 AM, Fabiano Rosas wrote:
Het Gala<het.g...@nutanix.com>  writes:

Integrate MigrateChannelList with all transport backends
(socket, exec and rdma) for both src and dest migration
endpoints for hmp migration.

Suggested-by: Aravind Retnakaran<aravind.retnaka...@nutanix.com>
Signed-off-by: Het Gala<het.g...@nutanix.com>
---
  migration/migration-hmp-cmds.c | 15 +++++++++++++--
  migration/migration.c          |  5 ++---
  migration/migration.h          |  3 ++-
  3 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/migration/migration-hmp-cmds.c b/migration/migration-hmp-cmds.c
index a2e6a5c51e..21b57f7ed8 100644
--- a/migration/migration-hmp-cmds.c
+++ b/migration/migration-hmp-cmds.c
@@ -441,9 +441,14 @@ void hmp_migrate_incoming(Monitor *mon, const QDict *qdict)
  {
      Error *err = NULL;
      const char *uri = qdict_get_str(qdict, "uri");
+    MigrationChannelList *caps = NULL;
+    g_autoptr(MigrationChannel) channel = NULL;
No g_autoptr here because the list code will already free the channel.
Yes, g_autoptr is not needed here. Removing g_autoptr passes all the make checks (even -qcow2 181 test)but the return value is not right of the hmp_migrate() function.
- qmp_migrate_incoming(uri, false, NULL, &err);
+    migrate_uri_parse(uri, &channel, &err);
Need to check the return value of this function.

$ (echo "migrate -d unix:") | ./qemu-system-x86_64 -monitor stdio -display none
QEMU 8.1.50 monitor - type 'help' for more information
(qemu) migrate -d unix:
Segmentation fault (core dumped)

Yes, there is something wrong here, expected result should have been :

(qemu) migrate -d unix:
Error: invalid Unix socket address

or

(qemu) migrate -d tcp:12.11.34.142
Error: error parsing address '12.11.34.142'

I am investigating it right now. Will update on it and try to resolve it soon.

+    QAPI_LIST_PREPEND(caps, channel);
+ qmp_migrate_incoming(NULL, true, caps, &err);
+    qapi_free_MigrationChannelList(caps);
      hmp_handle_error(mon, err);
  }
@@ -730,9 +735,15 @@ void hmp_migrate(Monitor *mon, const QDict *qdict)
      bool resume = qdict_get_try_bool(qdict, "resume", false);
      const char *uri = qdict_get_str(qdict, "uri");
      Error *err = NULL;
+    MigrationChannelList *caps = NULL;
+    g_autoptr(MigrationChannel) channel = NULL;
- qmp_migrate(uri, false, NULL, !!blk, blk, !!inc, inc,
+    migrate_uri_parse(uri, &channel, &err);
+    QAPI_LIST_PREPEND(caps, channel);
+
+    qmp_migrate(NULL, true, caps, !!blk, blk, !!inc, inc,
                   false, false, true, resume, &err);
+    qapi_free_MigrationChannelList(caps);
      if (hmp_handle_error(mon, err)) {
          return;
      }
Regards,
Het Gala

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