[RFC,V1,5/6] migration: cpr-uri option

Commit Message

Steve Sistare June 30, 2024, 7:44 p.m. UTC

Define the cpr-uri QEMU command-line option to specify the URI from
which CPR vmstate is loaded for cpr-transfer mode.

Signed-off-by: Steve Sistare <[e-mail]>
---
 include/migration/cpr.h | 1 +
 migration/cpr.c         | 7 +++++++
 qemu-options.hx         | 8 ++++++++
 system/vl.c             | 3 +++
 4 files changed, 19 insertions(+)

Patch

diff --git a/include/migration/cpr.h b/include/migration/cpr.h
index 9aae94c..bc62493 100644
--- a/include/migration/cpr.h
+++ b/include/migration/cpr.h
@@ -22,6 +22,7 @@  int cpr_find_fd(const char *name, int id);
 int cpr_walk_fd(cpr_walk_fd_cb cb);
 void cpr_resave_fd(const char *name, int id, int fd);
 
+void cpr_set_cpr_uri(const char *uri);
 int cpr_state_save(Error **errp);
 int cpr_state_load(Error **errp);
 
diff --git a/migration/cpr.c b/migration/cpr.c
index f756c15..50c130c 100644
--- a/migration/cpr.c
+++ b/migration/cpr.c
@@ -157,6 +157,13 @@  static const VMStateDescription vmstate_cpr_state = {
 };
 /*************************************************************************/
 
+static char *cpr_uri;
+
+void cpr_set_cpr_uri(const char *uri)
+{
+    cpr_uri = g_strdup(uri);
+}
+
 int cpr_state_save(Error **errp)
 {
     int ret;
diff --git a/qemu-options.hx b/qemu-options.hx
index 595b693..a6b5253 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -4776,6 +4776,14 @@  SRST
 
 ERST
 
+DEF("cpr-uri", HAS_ARG, QEMU_OPTION_cpr_uri, \
+    "-cpr-uri unix:socketpath\n",
+    QEMU_ARCH_ALL)
+SRST
+``-cpr-uri unix:socketpath``
+    URI for incoming CPR state, for the cpr-transfer migration mode.
+ERST
+
 DEF("incoming", HAS_ARG, QEMU_OPTION_incoming, \
     "-incoming tcp:[host]:port[,to=maxport][,ipv4=on|off][,ipv6=on|off]\n" \
     "-incoming rdma:host:port[,ipv4=on|off][,ipv6=on|off]\n" \
diff --git a/system/vl.c b/system/vl.c
index 6521ee3..32015ac 100644
--- a/system/vl.c
+++ b/system/vl.c
@@ -3483,6 +3483,9 @@  void qemu_init(int argc, char **argv)
                     exit(1);
                 }
                 break;
+            case QEMU_OPTION_cpr_uri:
+                cpr_set_cpr_uri(optarg);
+                break;
             case QEMU_OPTION_incoming:
                 if (!incoming) {
                     runstate_set(RUN_STATE_INMIGRATE);