[libvirt] [PATCH 2/2] qemu: Change the default unix monitor timeout
Daniel P. Berrange
berrange at redhat.com
Thu Jan 16 16:11:07 UTC 2014
On Thu, Jan 09, 2014 at 09:22:06AM +0100, Martin Kletzander wrote:
> There is a number of reported issues when we fail starting a domain.
> Turns out that, in some scenarios like high load, 3 second timeout is
> not enough for qemu to start up to the phase where the socket is
> created. Since the timeout is configurable and there is no downside
> of waiting longer, raise the timeout right to 30 seconds.
>
> Signed-off-by: Martin Kletzander <mkletzan at redhat.com>
> ---
> src/qemu/qemu.conf | 2 +-
> src/qemu/qemu_monitor.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf
> index 6217b49..4936d88 100644
> --- a/src/qemu/qemu.conf
> +++ b/src/qemu/qemu.conf
> @@ -472,6 +472,6 @@
> # such file or directory" that could be because libvirt did not wait
> # enough time, you can try increasing this timeout.
> #
> -# Default is 3
> +# Default is 30
> #
> #monitor_socket_open_timeout = 60
> diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
> index f34527a..6a437b1 100644
> --- a/src/qemu/qemu_monitor.c
> +++ b/src/qemu/qemu_monitor.c
> @@ -273,7 +273,7 @@ qemuMonitorOpenUnix(const char *monitor, pid_t cpid, virQEMUDriverPtr driver)
> virQEMUDriverConfigPtr cfg = NULL;
> struct sockaddr_un addr;
> int monfd;
> - int timeout = 3; /* In seconds */
> + int timeout = 30; /* In seconds */
> int ret;
> size_t i = 0;
ACK.
It is safe to wait longer, since in the loop we kill() to check if
QEMU is still running or not.
Daniel
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