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Re: [PATCH] qga: Add log to guest-fsfreeze-thaw command


From: Konstantin Kostiuk
Subject: Re: [PATCH] qga: Add log to guest-fsfreeze-thaw command
Date: Mon, 9 Dec 2024 13:40:37 +0200


Best Regards,
Konstantin Kostiuk.


On Mon, Dec 9, 2024 at 1:30 PM Daniel P. Berrangé <berrange@redhat.com> wrote:
On Mon, Dec 09, 2024 at 01:18:17PM +0200, Konstantin Kostiuk wrote:
> Signed-off-by: Konstantin Kostiuk <kkostiuk@redhat.com>
> ---
>  qga/commands-posix.c | 3 +++
>  qga/commands-win32.c | 2 ++
>  2 files changed, 5 insertions(+)
>
> diff --git a/qga/commands-posix.c b/qga/commands-posix.c
> index 636307bedf..ac8d150582 100644
> --- a/qga/commands-posix.c
> +++ b/qga/commands-posix.c
> @@ -805,6 +805,9 @@ int64_t qmp_guest_fsfreeze_thaw(Error **errp)
>      int ret;

>      ret = qmp_guest_fsfreeze_do_thaw(errp);
> +
> +    slog("guest-fsthaw called");

If ret < 0, then thawing failed and surely it is potentially
unsafe to log ?


Potentially yes, but we have similar in guest_fsfreeze_cleanup.
We print the log when qmp_guest_fsfreeze_thaw fails.
 
> +
>      if (ret >= 0) {
>          ga_unset_frozen(ga_state);
>          execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp);
> diff --git a/qga/commands-win32.c b/qga/commands-win32.c
> index 038beb8cfa..3a6f3ac7c5 100644
> --- a/qga/commands-win32.c
> +++ b/qga/commands-win32.c
> @@ -1272,6 +1272,8 @@ int64_t qmp_guest_fsfreeze_thaw(Error **errp)

>      qga_vss_fsfreeze(&i, false, NULL, errp);

> +    slog("guest-fsthaw called");
> +
>      ga_unset_frozen(ga_state);
>      return i;
>  }
> --
> 2.47.1
>

With regards,
Daniel
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