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Re: [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamoni
From: |
Ján Tomko |
Subject: |
Re: [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamonized |
Date: |
Mon, 29 Feb 2016 09:57:11 +0100 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Wed, Feb 24, 2016 at 02:27:36PM +0100, Paolo Bonzini wrote:
> From: Dimitris Aragiorgis <address@hidden>
>
> In case of daemonize, use the logfile passed with the -D option in
> order to redirect stderr to it instead of /dev/null.
>
> Also remove some unused code in log.h.
>
> Signed-off-by: Dimitris Aragiorgis <address@hidden>
> Message-Id: <address@hidden>
> Signed-off-by: Paolo Bonzini <address@hidden>
> ---
> include/qemu/log.h | 6 ------
> os-posix.c | 6 +++++-
> util/log.c | 11 +++++++++--
> 3 files changed, 14 insertions(+), 9 deletions(-)
>
> diff --git a/include/qemu/log.h b/include/qemu/log.h
> index 30817f7..dda65fd 100644
> --- a/include/qemu/log.h
> +++ b/include/qemu/log.h
> @@ -94,12 +94,6 @@ static inline void qemu_log_close(void)
> }
> }
>
> -/* Set up a new log file */
> -static inline void qemu_log_set_file(FILE *f)
> -{
> - qemu_logfile = f;
> -}
> -
> /* define log items */
> typedef struct QEMULogItem {
> int mask;
> diff --git a/os-posix.c b/os-posix.c
> index cce62ed..92fa3ba 100644
> --- a/os-posix.c
> +++ b/os-posix.c
> @@ -37,6 +37,7 @@
> #include "qemu-options.h"
> #include "qemu/rcu.h"
> #include "qemu/error-report.h"
> +#include "qemu/log.h"
>
> #ifdef CONFIG_LINUX
> #include <sys/prctl.h>
> @@ -275,7 +276,10 @@ void os_setup_post(void)
>
> dup2(fd, 0);
> dup2(fd, 1);
> - dup2(fd, 2);
> + /* In case -D is given do not redirect stderr to /dev/null */
> + if (!qemu_logfile) {
> + dup2(fd, 2);
> + }
>
This hunk broke qemu usage in libvirt. When libvirtd runs qemu for
capability probing, it just hangs.
There is no -D on the command line:
qemu-system-x86_64 -S -no-user-config -nodefaults -nographic -M none
-qmp unix:/var/lib/libvirt/qemu/capabilities.monitor.sock,server,nowait
-pidfile /var/lib/libvirt/qemu/capabilities.pidfile -daemonize
Jan
- [Qemu-devel] [PULL 05/19] dump-guest-memory: using static DumpState, add DumpStatus, (continued)
- [Qemu-devel] [PULL 05/19] dump-guest-memory: using static DumpState, add DumpStatus, Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 03/19] dump-guest-memory: cleanup: removing dump_{error|cleanup}()., Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 08/19] dump-guest-memory: disable dump when in INMIGRATE state, Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 09/19] dump-guest-memory: add "detach" support, Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 07/19] dump-guest-memory: introduce dump_process() helper function., Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 06/19] dump-guest-memory: add dump_in_progress() helper function, Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 10/19] DumpState: adding total_size and written_size fields, Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 12/19] Dump: add hmp command "info dump", Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 11/19] Dump: add qmp command "query-dump", Paolo Bonzini, 2016/02/24
- [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamonized, Paolo Bonzini, 2016/02/24
- Re: [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamonized,
Ján Tomko <=
- Re: [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamonized, Paolo Bonzini, 2016/02/29
- Re: [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamonized, Ján Tomko, 2016/02/29
- Re: [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamonized, Paolo Bonzini, 2016/02/29
- Re: [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamonized, Ján Tomko, 2016/02/29
- Re: [Qemu-devel] [PULL 14/19] log: Redirect stderr to logfile if deamonized, Paolo Bonzini, 2016/02/29
[Qemu-devel] [PULL 13/19] dump-guest-memory: add qmp event DUMP_COMPLETED, Paolo Bonzini, 2016/02/24
[Qemu-devel] [PULL 16/19] memory: optimize qemu_get_ram_ptr and qemu_ram_ptr_length, Paolo Bonzini, 2016/02/24
[Qemu-devel] [PULL 17/19] memory: Remove unreachable return statement, Paolo Bonzini, 2016/02/24
[Qemu-devel] [PULL 18/19] chardev: Properly initialize ChardevCommon components, Paolo Bonzini, 2016/02/24