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Merge pull request #931 from n-eiling/pageserver-support

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c/r: support for the criu pageserver
This commit is contained in:
Stéphane Graber 2016-03-31 14:50:04 -04:00
commit 442ad5c61c
4 changed files with 30 additions and 9 deletions
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29
src/lxc/criu.c
View File

@ -82,6 +82,10 @@ struct criu_opts {
* different) on the target host. NULL if lxc.console = "none".
*/
char *console_name;
/* Address and port where a criu pageserver is listening */
char *pageserver_address;
char *pageserver_port;
};
static int load_tty_major_minor(char *directory, char *output, int len)
@ -156,6 +160,10 @@ static void exec_criu(struct criu_opts *opts)
if (opts->predump_dir)
static_args += 2;
/* --page-server --address <address> --port <port> */
if (opts->pageserver_address && opts->pageserver_port)
static_args += 5;
/* --leave-running (only for final dump) */
if (strcmp(opts->action, "dump") == 0 && !opts->stop)
static_args++;
@ -272,6 +280,14 @@ static void exec_criu(struct criu_opts *opts)
DECLARE_ARG(opts->predump_dir);
}
if (opts->pageserver_address && opts->pageserver_port) {
DECLARE_ARG("--page-server");
DECLARE_ARG("--address");
DECLARE_ARG(opts->pageserver_address);
DECLARE_ARG("--port");
DECLARE_ARG(opts->pageserver_port);
}
/* only for final dump */
if (strcmp(opts->action, "dump") == 0 && !opts->stop)
DECLARE_ARG("--leave-running");
@ -814,7 +830,8 @@ static int save_tty_major_minor(char *directory, struct lxc_container *c, char *
/* do one of either predump or a regular dump */
static bool do_dump(struct lxc_container *c, char *mode, char *directory,
bool stop, bool verbose, char *predump_dir)
bool stop, bool verbose, char *predump_dir,
char *pageserver_address, char *pageserver_port)
{
pid_t pid;
@ -840,6 +857,8 @@ static bool do_dump(struct lxc_container *c, char *mode, char *directory,
os.verbose = verbose;
os.predump_dir = predump_dir;
os.console_name = c->lxc_conf->console.path;
os.pageserver_address = pageserver_address;
os.pageserver_port = pageserver_port;
if (save_tty_major_minor(directory, c, os.tty_id, sizeof(os.tty_id)) < 0)
exit(1);
@ -872,12 +891,12 @@ static bool do_dump(struct lxc_container *c, char *mode, char *directory,
}
}
bool __criu_pre_dump(struct lxc_container *c, char *directory, bool verbose, char *predump_dir)
bool __criu_pre_dump(struct lxc_container *c, char *directory, bool verbose, char *predump_dir, char *pageserver_address, char *pageserver_port)
{
return do_dump(c, "pre-dump", directory, false, verbose, predump_dir);
return do_dump(c, "pre-dump", directory, false, verbose, predump_dir, pageserver_address, pageserver_port);
}
bool __criu_dump(struct lxc_container *c, char *directory, bool stop, bool verbose, char *predump_dir)
bool __criu_dump(struct lxc_container *c, char *directory, bool stop, bool verbose, char *predump_dir, char *pageserver_address, char *pageserver_port)
{
char path[PATH_MAX];
int ret;
@ -891,7 +910,7 @@ bool __criu_dump(struct lxc_container *c, char *directory, bool stop, bool verbo
return false;
}
return do_dump(c, "dump", directory, stop, verbose, predump_dir);
return do_dump(c, "dump", directory, stop, verbose, predump_dir, pageserver_address, pageserver_port);
}
bool __criu_restore(struct lxc_container *c, char *directory, bool verbose)

4
src/lxc/criu.h
View File

@ -27,8 +27,8 @@
#include <lxc/lxccontainer.h>
bool __criu_pre_dump(struct lxc_container *c, char *directory, bool verbose, char *predump_dir);
bool __criu_dump(struct lxc_container *c, char *directory, bool stop, bool verbose, char *predump_dir);
bool __criu_pre_dump(struct lxc_container *c, char *directory, bool verbose, char *predump_dir, char *pageserver_address, char *pageserver_port);
bool __criu_dump(struct lxc_container *c, char *directory, bool stop, bool verbose, char *predump_dir, char *pageserver_address, char *pageserver_port);
bool __criu_restore(struct lxc_container *c, char *directory, bool verbose);
#endif

4
src/lxc/lxccontainer.c
View File

@ -3955,10 +3955,10 @@ static int do_lxcapi_migrate(struct lxc_container *c, unsigned int cmd,
switch (cmd) {
case MIGRATE_PRE_DUMP:
ret = !__criu_pre_dump(c, opts->directory, opts->verbose, opts->predump_dir);
ret = !__criu_pre_dump(c, opts->directory, opts->verbose, opts->predump_dir, opts->pageserver_address, opts->pageserver_port);
break;
case MIGRATE_DUMP:
ret = !__criu_dump(c, opts->directory, opts->stop, opts->verbose, opts->predump_dir);
ret = !__criu_dump(c, opts->directory, opts->stop, opts->verbose, opts->predump_dir, opts->pageserver_address, opts->pageserver_port);
break;
case MIGRATE_RESTORE:
ret = !__criu_restore(c, opts->directory, opts->verbose);

2
src/lxc/lxccontainer.h
View File

@ -882,6 +882,8 @@ struct migrate_opts {
bool stop; /* stop the container after dump? */
char *predump_dir; /* relative to directory above */
char *pageserver_address; /* where should memory pages be send? */
char *pageserver_port;
};
/*!