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Subject: Re: [pve-devel] [PATCH ha-manager 2/3] watchdog: warn when about to
expire
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Am 19.05.25 um 15:09 schrieb Maximiliano Sandoval:
> Signed-off-by: Maximiliano Sandoval <m.sandoval@proxmox.com>
> ---
> src/watchdog-mux.c | 26 ++++++++++++++++++++++++++
> 1 file changed, 26 insertions(+)
>
> diff --git a/src/watchdog-mux.c b/src/watchdog-mux.c
> index a9017b3..e14c768 100644
> --- a/src/watchdog-mux.c
> +++ b/src/watchdog-mux.c
> @@ -29,15 +29,24 @@
>
> #define JOURNALCTL_BIN "/bin/journalctl"
>
> +#define CLIENT_WATCHDOG_TIMEOUT_WARNING 50
> +
> int watchdog_fd = -1;
> int watchdog_timeout = 10;
> int client_watchdog_timeout = 60;
> int update_watchdog = 1;
>
> +enum warning_state_t {
> + NONE,
> + WARNING_ISSUED,
> + CRISIS_AVERTED,
> +};
> +
> typedef struct {
> int fd;
> time_t time;
> int magic_close;
> + enum warning_state_t warning_state;
> } wd_client_t;
>
> #define MAX_CLIENTS 100
> @@ -54,6 +63,7 @@ alloc_client(int fd, time_t time)
> client_list[i].fd = fd;
> client_list[i].time = time;
> client_list[i].magic_close = 0;
> + client_list[i].warning_state = NONE;
> return &client_list[i];
> }
> }
> @@ -244,6 +254,22 @@ main(void)
> time_t ctime = time(NULL);
> for (i = 0; i < MAX_CLIENTS; i++) {
> if (client_list[i].fd != 0 && client_list[i].time != 0) {
> + if (
> + client_list[i].warning_state == WARNING_ISSUED
> + && (ctime - client_list[i].time) <= CLIENT_WATCHDOG_TIMEOUT_WARNING
> + ) {
> + client_list[i].warning_state = CRISIS_AVERTED;
> + fprintf(stderr, "phew, client watchdog was updated before expiring\n");
please no "phew" in the logs, this is a serious topic were being
factual and bland is definitively preferred.
> + }
> +
> + if (
> + client_list[i].warning_state != WARNING_ISSUED
> + && (ctime - client_list[i].time) > CLIENT_WATCHDOG_TIMEOUT_WARNING
> + ) {
> + client_list[i].warning_state = WARNING_ISSUED;
> + fprintf(stderr, "client watchdog is about to expire\n");
would be good to include the time left here in the message, allows
admins/support a more informed picture, especially if the timeouts
ever change.
> + }
> +
> if ((ctime - client_list[i].time) > client_watchdog_timeout) {
> update_watchdog = 0;
> fprintf(stderr, "client watchdog expired - disable watchdog updates\n");
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