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[PATCH RFC 06/14] migration/rdma: Transmit initial packet
From: |
Zhimin Feng |
Subject: |
[PATCH RFC 06/14] migration/rdma: Transmit initial packet |
Date: |
Thu, 13 Feb 2020 17:37:47 +0800 |
Transmit initial packet through the multifd RDMA channels,
so that we can identify the multifd channels.
Signed-off-by: Zhimin Feng <address@hidden>
---
migration/multifd.c | 33 +++++++++++++++++++++------------
migration/rdma.c | 2 ++
2 files changed, 23 insertions(+), 12 deletions(-)
diff --git a/migration/multifd.c b/migration/multifd.c
index acdfd3d5b3..a57d7a2eab 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -483,6 +483,13 @@ void multifd_send_sync_main(QEMUFile *f)
static void *multifd_rdma_send_thread(void *opaque)
{
MultiFDSendParams *p = opaque;
+ Error *local_err = NULL;
+
+ trace_multifd_send_thread_start(p->id);
+
+ if (multifd_send_initial_packet(p, &local_err) < 0) {
+ goto out;
+ }
while (true) {
qemu_mutex_lock(&p->mutex);
@@ -494,6 +501,12 @@ static void *multifd_rdma_send_thread(void *opaque)
qemu_sem_wait(&p->sem);
}
+out:
+ if (local_err) {
+ trace_multifd_send_error(p->id);
+ multifd_send_terminate_threads(local_err);
+ }
+
qemu_mutex_lock(&p->mutex);
p->running = false;
qemu_mutex_unlock(&p->mutex);
@@ -964,18 +977,14 @@ bool multifd_recv_new_channel(QIOChannel *ioc, Error
**errp)
Error *local_err = NULL;
int id;
- if (migrate_use_rdma()) {
- id = multifd_recv_state->count;
- } else {
- id = multifd_recv_initial_packet(ioc, &local_err);
- if (id < 0) {
- multifd_recv_terminate_threads(local_err);
- error_propagate_prepend(errp, local_err,
- "failed to receive packet"
- " via multifd channel %d: ",
- atomic_read(&multifd_recv_state->count));
- return false;
- }
+ id = multifd_recv_initial_packet(ioc, &local_err);
+ if (id < 0) {
+ multifd_recv_terminate_threads(local_err);
+ error_propagate_prepend(errp, local_err,
+ "failed to receive packet"
+ " via multifd channel %d: ",
+ atomic_read(&multifd_recv_state->count));
+ return false;
}
trace_multifd_recv_new_channel(id);
diff --git a/migration/rdma.c b/migration/rdma.c
index 48615fcaad..2f1e69197f 100644
--- a/migration/rdma.c
+++ b/migration/rdma.c
@@ -4003,6 +4003,8 @@ int multifd_channel_rdma_connect(void *opaque)
goto out;
}
+ p->c = QIO_CHANNEL(getQIOChannel(p->file));
+
out:
if (local_err) {
trace_multifd_send_error(p->id);
--
2.19.1
- [PATCH RFC 01/14] migration: add the 'migrate_use_rdma_pin_all' function, (continued)
- [PATCH RFC 01/14] migration: add the 'migrate_use_rdma_pin_all' function, Zhimin Feng, 2020/02/13
- [PATCH RFC 02/14] migration: judge whether or not the RDMA is used for migration, Zhimin Feng, 2020/02/13
- [PATCH RFC 03/14] migration/rdma: Create multiFd migration threads, Zhimin Feng, 2020/02/13
- [PATCH RFC 11/14] migration/rdma: use multifd to migrate VM for rdma-pin-all mode, Zhimin Feng, 2020/02/13
- [PATCH RFC 10/14] migration/rdma: Wait for all multifd to complete registration, Zhimin Feng, 2020/02/13
- [PATCH RFC 12/14] migration/rdma: use multifd to migrate VM for NOT rdma-pin-all mode, Zhimin Feng, 2020/02/13
- [PATCH RFC 06/14] migration/rdma: Transmit initial packet,
Zhimin Feng <=
- [PATCH RFC 07/14] migration/rdma: Export the 'qemu_rdma_registration_handle' and 'qemu_rdma_exchange_send' functions, Zhimin Feng, 2020/02/13
- [PATCH RFC 05/14] migration/rdma: Create the multifd channels for RDMA, Zhimin Feng, 2020/02/13
- [PATCH RFC 04/14] migration/rdma: Export the RDMAContext struct, Zhimin Feng, 2020/02/13
- [PATCH RFC 09/14] migration/rdma: register memory for multifd RDMA channels, Zhimin Feng, 2020/02/13
- [PATCH RFC 08/14] migration/rdma: Add the function for dynamic page registration, Zhimin Feng, 2020/02/13
- [PATCH RFC 13/14] migration/rdma: only register the memory for multifd channels, Zhimin Feng, 2020/02/13
- [PATCH RFC 14/14] migration/rdma: RDMA cleanup for multifd migration, Zhimin Feng, 2020/02/13
- Re: [PATCH RFC 00/14] *** multifd for RDMA v2 ***, no-reply, 2020/02/13