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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [RFC Patch v4 06/18] Allow slave sends data to master
In colo mode, slave needs to send data to master, but the io_fd
only can be written in master, and only can be read in slave.
Save recv_fd in domain_suspend_state, and send_fd in
domain_create_state.
Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx>
---
tools/libxl/libxl.c | 2 +-
tools/libxl/libxl_create.c | 14 ++++++++++----
tools/libxl/libxl_internal.h | 2 ++
tools/libxl/libxl_types.idl | 7 +++++++
tools/libxl/xl_cmdimpl.c | 7 +++++++
5 files changed, 27 insertions(+), 5 deletions(-)
diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index fa990fe..145e897 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -849,7 +849,7 @@ int libxl_domain_remus_start(libxl_ctx *ctx,
libxl_domain_remus_info *info,
dss->callback = remus_failover_cb;
dss->domid = domid;
dss->fd = send_fd;
- /* TODO do something with recv_fd */
+ dss->recv_fd = recv_fd;
dss->type = type;
dss->live = 1;
dss->debug = 0;
diff --git a/tools/libxl/libxl_create.c b/tools/libxl/libxl_create.c
index b1ff5ae..5f61514 100644
--- a/tools/libxl/libxl_create.c
+++ b/tools/libxl/libxl_create.c
@@ -1491,8 +1491,8 @@ static void domain_create_cb(libxl__egc *egc,
int rc, uint32_t domid);
static int do_domain_create(libxl_ctx *ctx, libxl_domain_config *d_config,
- uint32_t *domid,
- int restore_fd, int checkpointed_stream,
+ uint32_t *domid, int restore_fd,
+ int send_fd, int checkpointed_stream,
const libxl_asyncop_how *ao_how,
const libxl_asyncprogress_how *aop_console_how)
{
@@ -1505,6 +1505,7 @@ static int do_domain_create(libxl_ctx *ctx,
libxl_domain_config *d_config,
libxl_domain_config_init(&cdcs->dcs.guest_config_saved);
libxl_domain_config_copy(ctx, &cdcs->dcs.guest_config_saved, d_config);
cdcs->dcs.restore_fd = restore_fd;
+ cdcs->dcs.send_fd = send_fd;
cdcs->dcs.callback = domain_create_cb;
cdcs->dcs.checkpointed_stream = checkpointed_stream;
libxl__ao_progress_gethow(&cdcs->dcs.aop_console_how, aop_console_how);
@@ -1533,7 +1534,7 @@ int libxl_domain_create_new(libxl_ctx *ctx,
libxl_domain_config *d_config,
const libxl_asyncop_how *ao_how,
const libxl_asyncprogress_how *aop_console_how)
{
- return do_domain_create(ctx, d_config, domid, -1, 0,
+ return do_domain_create(ctx, d_config, domid, -1, -1, 0,
ao_how, aop_console_how);
}
@@ -1543,7 +1544,12 @@ int libxl_domain_create_restore(libxl_ctx *ctx,
libxl_domain_config *d_config,
const libxl_asyncop_how *ao_how,
const libxl_asyncprogress_how *aop_console_how)
{
- return do_domain_create(ctx, d_config, domid, restore_fd,
+ int send_fd = -1;
+
+ if (params->checkpointed_stream == LIBXL_CHECKPOINTED_STREAM_COLO)
+ send_fd = params->send_fd;
+
+ return do_domain_create(ctx, d_config, domid, restore_fd, send_fd,
params->checkpointed_stream, ao_how,
aop_console_how);
}
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index d4aa209..76d57fb 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -2879,6 +2879,7 @@ struct libxl__domain_suspend_state {
uint32_t domid;
int fd;
+ int recv_fd;
libxl_domain_type type;
int live;
int debug;
@@ -3144,6 +3145,7 @@ struct libxl__domain_create_state {
libxl_domain_config *guest_config;
libxl_domain_config guest_config_saved; /* vanilla config */
int restore_fd;
+ int send_fd;
libxl__domain_create_cb *callback;
libxl_asyncprogress_how aop_console_how;
/* private to domain_create */
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index a5890f0..ed567f4 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -194,6 +194,12 @@ libxl_viridian_enlightenment =
Enumeration("viridian_enlightenment", [
(2, "time_ref_count"),
])
+libxl_checkpointed_stream = Enumeration("checkpointed_stream", [
+ (0, "NONE"),
+ (1, "REMUS"),
+ (2, "COLO"),
+ ], init_val = 0)
+
#
# Complex libxl types
#
@@ -340,6 +346,7 @@ libxl_domain_create_info = Struct("domain_create_info",[
libxl_domain_restore_params = Struct("domain_restore_params", [
("checkpointed_stream", integer),
+ ("send_fd", integer),
])
libxl_domain_sched_params = Struct("domain_sched_params",[
diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index 3c9f146..fea17ea 100644
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -154,6 +154,7 @@ struct domain_create {
const char *extra_config; /* extra config string */
const char *restore_file;
int migrate_fd; /* -1 means none */
+ int send_fd; /* -1 means none */
char **migration_domname_r; /* from malloc */
};
@@ -2309,6 +2310,7 @@ static uint32_t create_domain(struct domain_create
*dom_info)
void *config_data = 0;
int config_len = 0;
int restore_fd = -1;
+ int send_fd = -1;
const libxl_asyncprogress_how *autoconnect_console_how;
struct save_file_header hdr;
@@ -2325,6 +2327,7 @@ static uint32_t create_domain(struct domain_create
*dom_info)
if (migrate_fd >= 0) {
restore_source = "<incoming migration stream>";
restore_fd = migrate_fd;
+ send_fd = dom_info->send_fd;
} else {
restore_source = restore_file;
restore_fd = open(restore_file, O_RDONLY);
@@ -2498,6 +2501,7 @@ start:
libxl_domain_restore_params_init(¶ms);
params.checkpointed_stream = dom_info->checkpointed_stream;
+ params.send_fd = send_fd;
ret = libxl_domain_create_restore(ctx, &d_config,
&domid, restore_fd,
¶ms,
@@ -4032,6 +4036,7 @@ static void migrate_receive(int debug, int daemonize, int
monitor,
dom_info.monitor = monitor;
dom_info.paused = 1;
dom_info.migrate_fd = recv_fd;
+ dom_info.send_fd = send_fd;
dom_info.migration_domname_r = &migration_domname;
dom_info.checkpointed_stream = remus;
@@ -4202,6 +4207,7 @@ int main_restore(int argc, char **argv)
dom_info.config_file = config_file;
dom_info.restore_file = checkpoint_file;
dom_info.migrate_fd = -1;
+ dom_info.send_fd = -1;
dom_info.vnc = vnc;
dom_info.vncautopass = vncautopass;
dom_info.console_autoconnect = console_autoconnect;
@@ -4641,6 +4647,7 @@ int main_create(int argc, char **argv)
dom_info.config_file = filename;
dom_info.extra_config = extra_config;
dom_info.migrate_fd = -1;
+ dom_info.send_fd = -1;
dom_info.vnc = vnc;
dom_info.vncautopass = vncautopass;
dom_info.console_autoconnect = console_autoconnect;
--
1.9.3
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