libxl: Remus - xl remus command

xl remus acts as a frontend to enable remus for a given domain.
 * At the moment, only memory checkpointing and blackhole replication is
   supported. Support for disk checkpointing and network buffering will
   be added in future.
 * Replication is done over ssh connection currently (like live migration
   with xl). Future versions will have an option to use simple tcp socket
   based replication channel (for both Remus & live migration).

Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/tools/libxl/xl_cmdtable.c b/tools/libxl/xl_cmdtable.c
index 896b3990a6..93d444eb2c 100644
--- a/tools/libxl/xl_cmdtable.c
+++ b/tools/libxl/xl_cmdtable.c
@@ -446,6 +446,20 @@ struct cmd_spec cmd_table[] = {
       "Loads a new policy int the Flask Xen security module",
       "<policy file>",
     },
+    { "remus",
+      &main_remus, 0, 1,
+      "Enable Remus HA for domain",
+      "[options] <Domain> [<host>]",
+      "-i MS                   Checkpoint domain memory every MS milliseconds (def. 200ms).\n"
+      "-b                      Replicate memory checkpoints to /dev/null (blackhole)\n"
+      "-u                      Disable memory checkpoint compression.\n"
+      "-s <sshcommand>         Use <sshcommand> instead of ssh.  String will be passed\n"
+      "                        to sh. If empty, run <host> instead of \n"
+      "                        ssh <host> xl migrate-receive -r [-e]\n"
+      "-e                      Do not wait in the background (on <host>) for the death\n"
+      "                        of the domain."
+
+    },
 };
 
 int cmdtable_len = sizeof(cmd_table)/sizeof(struct cmd_spec);