From: Steve Sistare <steven.sistare@oracle.com>
To: qemu-devel@nongnu.org
Cc: "Daniel P. Berrange" <berrange@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Juan Quintela" <quintela@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Markus Armbruster" <armbru@redhat.com>,
"Alex Williamson" <alex.williamson@redhat.com>,
"Steve Sistare" <steven.sistare@oracle.com>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: [PATCH V1 14/32] savevm: VMS_RESTART and cprsave restart
Date: Thu, 30 Jul 2020 08:14:18 -0700 [thread overview]
Message-ID: <1596122076-341293-15-git-send-email-steven.sistare@oracle.com> (raw)
In-Reply-To: <1596122076-341293-1-git-send-email-steven.sistare@oracle.com>
Add the VMS_RESTART variant of vmstate, for use when upgrading qemu in place
on the same host without a reboot. Invoke it using:
cprsave <filename> restart
VMS_RESTART supports guest ram mapped by private anonymous memory, versus
VMS_REBOOT which requires that guest ram be mapped by persistent shared
memory. Subsequent patches complete its implementation.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
hmp-commands.hx | 4 +++-
include/migration/vmstate.h | 1 +
migration/savevm.c | 4 +++-
monitor/qmp-cmds.c | 2 +-
qapi/migration.json | 1 +
5 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/hmp-commands.hx b/hmp-commands.hx
index 7517876..11a2089 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -369,7 +369,7 @@ ERST
{
.name = "cprsave",
.args_type = "file:s,mode:s",
- .params = "file 'reboot'",
+ .params = "file 'restart'|'reboot'",
.help = "create a checkpoint of the VM in file",
.cmd = hmp_cprsave,
},
@@ -380,6 +380,8 @@ SRST
in *file*.
If *mode* is 'reboot', the checkpoint can be cprload'ed after a host kexec
reboot.
+ If *mode* is 'restart', the checkpoint can be cprload'ed after restarting
+ qemu.
exec() /usr/bin/qemu-exec if it exists, else exec /usr/bin/qemu-system-x86_64,
passing all the original command line arguments. The VCPUs remain paused.
ERST
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
index c58551a..8239b84 100644
--- a/include/migration/vmstate.h
+++ b/include/migration/vmstate.h
@@ -162,6 +162,7 @@ typedef enum {
VMS_MIGRATE = (1U << 1),
VMS_SNAPSHOT = (1U << 2),
VMS_REBOOT = (1U << 3),
+ VMS_RESTART = (1U << 4),
VMS_MODE_ALL = ~0U
} VMStateMode;
diff --git a/migration/savevm.c b/migration/savevm.c
index 00f493b..38cc63a 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -2708,6 +2708,8 @@ void save_cpr_snapshot(const char *file, const char *mode, Error **errp)
if (!strcmp(mode, "reboot")) {
op = VMS_REBOOT;
+ } else if (!strcmp(mode, "restart")) {
+ op = VMS_RESTART;
} else {
error_setg(errp, "cprsave: bad mode %s", mode);
return;
@@ -2973,7 +2975,7 @@ void load_cpr_snapshot(const char *file, Error **errp)
return;
}
- ret = qemu_loadvm_state(f, VMS_REBOOT);
+ ret = qemu_loadvm_state(f, VMS_REBOOT | VMS_RESTART);
qemu_fclose(f);
if (ret < 0) {
error_setg(errp, "Error %d while loading VM state", ret);
diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
index 8c400e6..8a74c6e 100644
--- a/monitor/qmp-cmds.c
+++ b/monitor/qmp-cmds.c
@@ -164,7 +164,7 @@ void qmp_cont(Error **errp)
char *qmp_cprinfo(Error **errp)
{
- return g_strdup("reboot");
+ return g_strdup("reboot restart");
}
void qmp_cprsave(const char *file, const char *mode, Error **errp)
diff --git a/qapi/migration.json b/qapi/migration.json
index 8190b16..d22992b 100644
--- a/qapi/migration.json
+++ b/qapi/migration.json
@@ -1639,6 +1639,7 @@
#
# @file: name of checkpoint file
# @mode: 'reboot' : checkpoint can be cprload'ed after a host kexec reboot.
+# 'restart': checkpoint can be cprload'ed after restarting qemu.
#
# Since 5.0
##
--
1.8.3.1
next prev parent reply other threads:[~2020-07-30 15:45 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-30 15:14 [PATCH V1 00/32] Live Update Steve Sistare
2020-07-30 15:14 ` [PATCH V1 01/32] savevm: add vmstate handler iterators Steve Sistare
2020-09-11 16:24 ` Dr. David Alan Gilbert
2020-09-24 21:43 ` Steven Sistare
2020-09-25 9:07 ` Dr. David Alan Gilbert
2020-07-30 15:14 ` [PATCH V1 02/32] savevm: VM handlers mode mask Steve Sistare
2020-07-30 15:14 ` [PATCH V1 03/32] savevm: QMP command for cprsave Steve Sistare
2020-07-30 16:12 ` Eric Blake
2020-07-30 17:52 ` Steven Sistare
2020-09-11 16:43 ` Dr. David Alan Gilbert
2020-09-25 18:43 ` Steven Sistare
2020-09-25 22:22 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 04/32] savevm: HMP Command " Steve Sistare
2020-09-11 16:57 ` Dr. David Alan Gilbert
2020-09-24 21:44 ` Steven Sistare
2020-09-25 9:26 ` Dr. David Alan Gilbert
2020-07-30 15:14 ` [PATCH V1 05/32] savevm: QMP command for cprload Steve Sistare
2020-07-30 16:14 ` Eric Blake
2020-07-30 18:00 ` Steven Sistare
2020-09-11 17:18 ` Dr. David Alan Gilbert
2020-09-24 21:49 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 06/32] savevm: HMP Command " Steve Sistare
2020-07-30 15:14 ` [PATCH V1 07/32] savevm: QMP command for cprinfo Steve Sistare
2020-07-30 16:17 ` Eric Blake
2020-07-30 18:02 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 08/32] savevm: HMP " Steve Sistare
2020-09-11 17:27 ` Dr. David Alan Gilbert
2020-09-24 21:50 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 09/32] savevm: prevent cprsave if memory is volatile Steve Sistare
2020-09-11 17:35 ` Dr. David Alan Gilbert
2020-09-24 21:51 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 10/32] kvmclock: restore paused KVM clock Steve Sistare
2020-09-11 17:50 ` Dr. David Alan Gilbert
2020-09-25 18:07 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 11/32] cpu: disable ticks when suspended Steve Sistare
2020-09-11 17:53 ` Dr. David Alan Gilbert
2020-09-24 20:42 ` Steven Sistare
2020-09-25 9:03 ` Dr. David Alan Gilbert
2020-07-30 15:14 ` [PATCH V1 12/32] vl: pause option Steve Sistare
2020-07-30 16:20 ` Eric Blake
2020-07-30 18:11 ` Steven Sistare
2020-07-31 10:07 ` Daniel P. Berrangé
2020-07-31 15:18 ` Steven Sistare
2020-07-30 17:03 ` Alex Bennée
2020-07-30 18:14 ` Steven Sistare
2020-07-31 9:44 ` Alex Bennée
2020-09-11 17:59 ` Dr. David Alan Gilbert
2020-09-24 21:51 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 13/32] gdbstub: gdb support for suspended state Steve Sistare
2020-09-11 18:41 ` Dr. David Alan Gilbert
2020-09-24 21:51 ` Steven Sistare
2020-07-30 15:14 ` Steve Sistare [this message]
2020-07-30 16:22 ` [PATCH V1 14/32] savevm: VMS_RESTART and cprsave restart Eric Blake
2020-07-30 18:14 ` Steven Sistare
2020-09-11 18:44 ` Dr. David Alan Gilbert
2020-09-24 21:44 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 15/32] vl: QEMU_START_FREEZE env var Steve Sistare
2020-09-11 18:49 ` Dr. David Alan Gilbert
2020-09-24 21:47 ` Steven Sistare
2020-09-25 15:52 ` Dr. David Alan Gilbert
2020-07-30 15:14 ` [PATCH V1 16/32] oslib: add qemu_clr_cloexec Steve Sistare
2020-09-11 18:52 ` Dr. David Alan Gilbert
2020-07-30 15:14 ` [PATCH V1 17/32] util: env var helpers Steve Sistare
2020-09-11 19:00 ` Dr. David Alan Gilbert
2020-09-24 21:52 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 18/32] osdep: import MADV_DOEXEC Steve Sistare
2020-08-17 18:30 ` Steven Sistare
2020-08-17 20:48 ` Alex Williamson
2020-08-17 21:20 ` Steven Sistare
2020-08-17 21:44 ` Alex Williamson
2020-08-18 2:42 ` Alex Williamson
2020-08-19 21:52 ` Steven Sistare
2020-08-24 22:30 ` Alex Williamson
2020-10-08 16:32 ` Steven Sistare
2020-10-15 20:36 ` Alex Williamson
2020-10-19 16:33 ` Steven Sistare
2020-10-26 18:28 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 19/32] memory: ram_block_add cosmetic changes Steve Sistare
2020-07-30 15:14 ` [PATCH V1 20/32] vl: add helper to request re-exec Steve Sistare
2020-07-30 15:14 ` [PATCH V1 21/32] exec, memory: exec(3) to restart Steve Sistare
2020-07-30 15:14 ` [PATCH V1 22/32] char: qio_channel_socket_accept reuse fd Steve Sistare
2020-09-15 17:33 ` Dr. David Alan Gilbert
2020-09-15 17:53 ` Daniel P. Berrangé
2020-09-24 21:54 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 23/32] char: save/restore chardev socket fds Steve Sistare
2020-07-30 15:14 ` [PATCH V1 24/32] ui: save/restore vnc " Steve Sistare
2020-07-31 9:06 ` Daniel P. Berrangé
2020-07-31 16:51 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 25/32] char: save/restore chardev pty fds Steve Sistare
2020-07-30 15:14 ` [PATCH V1 26/32] monitor: save/restore QMP negotiation status Steve Sistare
2020-07-30 15:14 ` [PATCH V1 27/32] vhost: reset vhost devices upon cprsave Steve Sistare
2020-07-30 15:14 ` [PATCH V1 28/32] char: restore terminal on restart Steve Sistare
2020-07-30 15:14 ` [PATCH V1 29/32] pci: export pci_update_mappings Steve Sistare
2020-07-30 15:14 ` [PATCH V1 30/32] vfio-pci: save and restore Steve Sistare
2020-08-06 10:22 ` Jason Zeng
2020-08-07 20:38 ` Steven Sistare
2020-08-10 3:50 ` Jason Zeng
2020-08-19 21:15 ` Steven Sistare
2020-08-20 10:33 ` Jason Zeng
2020-10-07 21:25 ` Steven Sistare
2020-07-30 15:14 ` [PATCH V1 31/32] vfio-pci: trace pci config Steve Sistare
2020-07-30 15:14 ` [PATCH V1 32/32] vfio-pci: improved tracing Steve Sistare
2020-09-15 18:49 ` Dr. David Alan Gilbert
2020-09-24 21:52 ` Steven Sistare
2020-07-30 16:52 ` [PATCH V1 00/32] Live Update Daniel P. Berrangé
2020-07-30 18:48 ` Steven Sistare
2020-07-31 8:53 ` Daniel P. Berrangé
2020-07-31 15:27 ` Steven Sistare
2020-07-31 15:52 ` Daniel P. Berrangé
2020-07-31 17:20 ` Steven Sistare
2020-08-11 19:08 ` Dr. David Alan Gilbert
2020-07-30 17:15 ` Paolo Bonzini
2020-07-30 19:09 ` Steven Sistare
2020-07-30 21:39 ` Paolo Bonzini
2020-07-31 19:22 ` Steven Sistare
2020-07-30 17:49 ` Dr. David Alan Gilbert
2020-07-30 19:31 ` Steven Sistare
2020-08-04 18:18 ` Steven Sistare
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