|
 |
586cba |
From fd6f516a94e635bc42e58448f314db575814a834 Mon Sep 17 00:00:00 2001
|
|
|
586cba |
From: Peter Xu <peterx@redhat.com>
|
|
|
586cba |
Date: Thu, 31 Mar 2022 11:08:45 -0400
|
|
|
586cba |
Subject: [PATCH 18/18] migration: Allow migrate-recover to run multiple times
|
|
|
586cba |
MIME-Version: 1.0
|
|
|
586cba |
Content-Type: text/plain; charset=UTF-8
|
|
|
586cba |
Content-Transfer-Encoding: 8bit
|
|
|
586cba |
|
|
|
586cba |
RH-Author: Peter Xu <peterx@redhat.com>
|
|
|
586cba |
RH-MergeRequest: 104: migration: Allow migrate-recover to run multiple times
|
|
|
586cba |
RH-Commit: [1/1] afd726e54c069ae800e2d01f34e768d6bac7dcb9 (peterx/qemu-kvm)
|
|
|
586cba |
RH-Bugzilla: 2096143
|
|
|
586cba |
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
|
586cba |
RH-Acked-by: Hanna Reitz <hreitz@redhat.com>
|
|
|
586cba |
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
|
|
586cba |
|
|
|
586cba |
Previously migration didn't have an easy way to cleanup the listening
|
|
|
586cba |
transport, migrate recovery only allows to execute once. That's done with a
|
|
|
586cba |
trick flag in postcopy_recover_triggered.
|
|
|
586cba |
|
|
|
586cba |
Now the facility is already there.
|
|
|
586cba |
|
|
|
586cba |
Drop postcopy_recover_triggered and instead allows a new migrate-recover to
|
|
|
586cba |
release the previous listener transport.
|
|
|
586cba |
|
|
|
586cba |
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
|
|
586cba |
Signed-off-by: Peter Xu <peterx@redhat.com>
|
|
|
586cba |
Message-Id: <20220331150857.74406-8-peterx@redhat.com>
|
|
|
586cba |
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
|
|
|
586cba |
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
|
|
586cba |
(cherry picked from commit 08401c0426bc1a5ce4609afd1cda5dd39abbf9fa)
|
|
|
586cba |
Signed-off-by: Peter Xu <peterx@redhat.com>
|
|
|
586cba |
---
|
|
|
586cba |
migration/migration.c | 13 ++-----------
|
|
|
586cba |
migration/migration.h | 1 -
|
|
|
586cba |
migration/savevm.c | 3 ---
|
|
|
586cba |
3 files changed, 2 insertions(+), 15 deletions(-)
|
|
|
586cba |
|
|
|
586cba |
diff --git a/migration/migration.c b/migration/migration.c
|
|
|
586cba |
index 2a141bfaf3..8fb3eae910 100644
|
|
|
586cba |
--- a/migration/migration.c
|
|
|
586cba |
+++ b/migration/migration.c
|
|
|
586cba |
@@ -2166,11 +2166,8 @@ void qmp_migrate_recover(const char *uri, Error **errp)
|
|
|
586cba |
return;
|
|
|
586cba |
}
|
|
|
586cba |
|
|
|
586cba |
- if (qatomic_cmpxchg(&mis->postcopy_recover_triggered,
|
|
|
586cba |
- false, true) == true) {
|
|
|
586cba |
- error_setg(errp, "Migrate recovery is triggered already");
|
|
|
586cba |
- return;
|
|
|
586cba |
- }
|
|
|
586cba |
+ /* If there's an existing transport, release it */
|
|
|
586cba |
+ migration_incoming_transport_cleanup(mis);
|
|
|
586cba |
|
|
|
586cba |
/*
|
|
|
586cba |
* Note that this call will never start a real migration; it will
|
|
|
586cba |
@@ -2178,12 +2175,6 @@ void qmp_migrate_recover(const char *uri, Error **errp)
|
|
|
586cba |
* to continue using that newly established channel.
|
|
|
586cba |
*/
|
|
|
586cba |
qemu_start_incoming_migration(uri, errp);
|
|
|
586cba |
-
|
|
|
586cba |
- /* Safe to dereference with the assert above */
|
|
|
586cba |
- if (*errp) {
|
|
|
586cba |
- /* Reset the flag so user could still retry */
|
|
|
586cba |
- qatomic_set(&mis->postcopy_recover_triggered, false);
|
|
|
586cba |
- }
|
|
|
586cba |
}
|
|
|
586cba |
|
|
|
586cba |
void qmp_migrate_pause(Error **errp)
|
|
|
586cba |
diff --git a/migration/migration.h b/migration/migration.h
|
|
|
586cba |
index c2cabb8a14..fbc8690ec8 100644
|
|
|
586cba |
--- a/migration/migration.h
|
|
|
586cba |
+++ b/migration/migration.h
|
|
|
586cba |
@@ -139,7 +139,6 @@ struct MigrationIncomingState {
|
|
|
586cba |
struct PostcopyBlocktimeContext *blocktime_ctx;
|
|
|
586cba |
|
|
|
586cba |
/* notify PAUSED postcopy incoming migrations to try to continue */
|
|
|
586cba |
- bool postcopy_recover_triggered;
|
|
|
586cba |
QemuSemaphore postcopy_pause_sem_dst;
|
|
|
586cba |
QemuSemaphore postcopy_pause_sem_fault;
|
|
|
586cba |
|
|
|
586cba |
diff --git a/migration/savevm.c b/migration/savevm.c
|
|
|
586cba |
index 02ed94c180..d9076897b8 100644
|
|
|
586cba |
--- a/migration/savevm.c
|
|
|
586cba |
+++ b/migration/savevm.c
|
|
|
586cba |
@@ -2589,9 +2589,6 @@ static bool postcopy_pause_incoming(MigrationIncomingState *mis)
|
|
|
586cba |
|
|
|
586cba |
assert(migrate_postcopy_ram());
|
|
|
586cba |
|
|
|
586cba |
- /* Clear the triggered bit to allow one recovery */
|
|
|
586cba |
- mis->postcopy_recover_triggered = false;
|
|
|
586cba |
-
|
|
|
586cba |
/*
|
|
|
586cba |
* Unregister yank with either from/to src would work, since ioc behind it
|
|
|
586cba |
* is the same
|
|
|
586cba |
--
|
|
|
586cba |
2.35.3
|
|
|
586cba |
|