From: Steven Sistare <steven.sistare@oracle.com>
To: "Marc-André Lureau" <marcandre.lureau@gmail.com>
Cc: "Jason Zeng" <jason.zeng@linux.intel.com>,
"Juan Quintela" <quintela@redhat.com>,
"Eric Blake" <eblake@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
QEMU <qemu-devel@nongnu.org>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Alex Williamson" <alex.williamson@redhat.com>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Daniel P. Berrange" <berrange@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Markus Armbruster" <armbru@redhat.com>
Subject: Re: [PATCH V5 12/25] cpr: QMP interfaces for restart
Date: Mon, 12 Jul 2021 15:19:56 -0400 [thread overview]
Message-ID: <ce85a7ae-7db3-658e-71aa-ed2b800bb5fe@oracle.com> (raw)
In-Reply-To: <CAJ+F1CJCPKL9uKSMTsa5eZrvgBCgo2cHQQ=OUNLGRP+dMXCoqA@mail.gmail.com>
On 7/8/2021 11:49 AM, Marc-André Lureau wrote:
> Hi
>
> On Wed, Jul 7, 2021 at 9:33 PM Steve Sistare <steven.sistare@oracle.com <mailto:steven.sistare@oracle.com>> wrote:
>
> cprexec calls cprexec(). Syntax:
> { 'command': 'cprexec', 'data': { 'argv': [ 'str' ] } }
>
> Add the restart mode:
> { 'enum': 'CprMode', 'data': [ 'reboot', 'restart' ] }
>
> Signed-off-by: Steve Sistare <steven.sistare@oracle.com <mailto:steven.sistare@oracle.com>>
> ---
> monitor/qmp-cmds.c | 5 +++++
> qapi/cpr.json | 16 +++++++++++++++-
> 2 files changed, 20 insertions(+), 1 deletion(-)
>
> diff --git a/monitor/qmp-cmds.c b/monitor/qmp-cmds.c
> index 1128604..7326f7d 100644
> --- a/monitor/qmp-cmds.c
> +++ b/monitor/qmp-cmds.c
> @@ -179,6 +179,11 @@ void qmp_cprsave(const char *file, CprMode mode, Error **errp)
> cprsave(file, mode, errp);
> }
>
> +void qmp_cprexec(strList *args, Error **errp)
> +{
> + cprexec(args, errp);
> +}
> +
> void qmp_cprload(const char *file, Error **errp)
> {
> cprload(file, errp);
> diff --git a/qapi/cpr.json b/qapi/cpr.json
> index b6fdc89..2467e48 100644
> --- a/qapi/cpr.json
> +++ b/qapi/cpr.json
> @@ -16,10 +16,12 @@
> #
> # @reboot: checkpoint can be cprload'ed after a host kexec reboot.
> #
> +# @restart: checkpoint can be cprload'ed after restarting qemu.
> +#
> # Since: 6.1
> ##
> { 'enum': 'CprMode',
> - 'data': [ 'reboot' ] }
> + 'data': [ 'reboot', 'restart' ] }
>
>
> ##
> @@ -61,6 +63,18 @@
> 'mode': 'CprMode' } }
>
> ##
> +# @cprexec:
> +#
> +# Restart qemu.
> +#
> +# @argv: arguments to exec
>
>
> Why is it not then called cpr-restart ?
I'll change the description. exec is the key aspect to convey.
< Why does it take the whole argv?
It takes the whole argv because the caller may provide a prefix command to
modify the process context before executing qemu. We do that.
> Could argv be made optional?
If argv is omitted, I could exec the qemu binary with no args, but I don't think that
would be useful. It may even be confusing, if the caller has a bug and passes no args;
qemu would start and do nothing, rather than fail with an "exec failed" message.
- Steve
> +#
> +# Since: 6.1
> +##
> +{ 'command': 'cprexec',
> + 'data': { 'argv': [ 'str' ] } }
> +
> +##
> # @cprload:
> #
> # Start virtual machine from checkpoint file that was created earlier using
> --
> 1.8.3.1
>
>
>
>
> --
> Marc-André Lureau
next prev parent reply other threads:[~2021-07-12 19:22 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 17:20 [PATCH V5 00/25] Live Update Steve Sistare
2021-07-07 17:20 ` [PATCH V5 01/25] qemu_ram_volatile Steve Sistare
2021-07-08 12:01 ` Marc-André Lureau
2021-07-12 17:06 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 02/25] cpr: reboot mode Steve Sistare
2021-07-08 12:25 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-08-04 15:48 ` Eric Blake
2021-07-07 17:20 ` [PATCH V5 03/25] cpr: QMP interfaces for reboot Steve Sistare
2021-07-08 13:27 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-08-04 15:48 ` Eric Blake
2021-08-04 20:27 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 04/25] cpr: HMP " Steve Sistare
2021-07-28 4:55 ` Zheng Chuan
2021-07-07 17:20 ` [PATCH V5 05/25] as_flat_walk Steve Sistare
2021-07-08 13:49 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 06/25] oslib: qemu_clr_cloexec Steve Sistare
2021-07-08 13:58 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 07/25] machine: memfd-alloc option Steve Sistare
2021-07-08 14:20 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-07-12 17:45 ` Marc-André Lureau
2021-07-07 17:20 ` [PATCH V5 08/25] vl: add helper to request re-exec Steve Sistare
2021-07-08 14:31 ` Marc-André Lureau
2021-07-12 17:07 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 09/25] string to strList Steve Sistare
2021-07-08 14:37 ` Marc-André Lureau
2021-07-07 17:20 ` [PATCH V5 10/25] util: env var helpers Steve Sistare
2021-07-08 15:10 ` Marc-André Lureau
2021-07-12 19:19 ` Steven Sistare
2021-07-12 19:36 ` Marc-André Lureau
2021-07-13 16:15 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 11/25] cpr: restart mode Steve Sistare
2021-07-08 15:43 ` Marc-André Lureau
2021-07-08 15:54 ` Marc-André Lureau
2021-07-12 19:19 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 12/25] cpr: QMP interfaces for restart Steve Sistare
2021-07-08 15:49 ` Marc-André Lureau
2021-07-12 19:19 ` Steven Sistare [this message]
2021-08-04 16:00 ` Eric Blake
2021-08-04 20:22 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 13/25] cpr: HMP " Steve Sistare
2021-07-28 4:56 ` Zheng Chuan
2021-07-07 17:20 ` [PATCH V5 14/25] pci: export functions for cpr Steve Sistare
2021-07-07 17:20 ` [PATCH V5 15/25] vfio-pci: refactor " Steve Sistare
2021-07-07 17:20 ` [PATCH V5 16/25] vfio-pci: cpr part 1 Steve Sistare
2021-07-16 17:45 ` Alex Williamson
2021-07-19 17:43 ` Steven Sistare
2021-07-28 4:56 ` Zheng Chuan
2021-07-30 12:50 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 17/25] vfio-pci: cpr part 2 Steve Sistare
2021-07-16 20:51 ` Alex Williamson
2021-07-19 17:44 ` Steven Sistare
2021-07-19 18:10 ` Alex Williamson
2021-07-19 18:38 ` Steven Sistare
2021-07-28 4:56 ` Zheng Chuan
2021-07-30 12:52 ` Steven Sistare
2021-07-31 6:07 ` Zheng Chuan
2021-07-07 17:20 ` [PATCH V5 18/25] vhost: reset vhost devices upon cprsave Steve Sistare
2021-07-07 17:20 ` [PATCH V5 19/25] hostmem-memfd: cpr support Steve Sistare
2021-07-07 17:20 ` [PATCH V5 20/25] chardev: cpr framework Steve Sistare
2021-07-08 16:03 ` Marc-André Lureau
2021-07-12 19:20 ` Steven Sistare
2021-07-12 19:49 ` Marc-André Lureau
2021-07-13 14:34 ` Steven Sistare
2021-07-07 17:20 ` [PATCH V5 21/25] chardev: cpr for simple devices Steve Sistare
2021-07-07 17:20 ` [PATCH V5 22/25] chardev: cpr for pty Steve Sistare
2021-07-07 17:20 ` [PATCH V5 23/25] chardev: cpr for sockets Steve Sistare
2021-07-29 4:04 ` Zheng Chuan
2021-07-07 17:20 ` [PATCH V5 24/25] cpr: only-cpr-capable option Steve Sistare
2021-07-07 17:20 ` [PATCH V5 25/25] simplify savevm Steve Sistare
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