[libvirt] [PATCH] qemu: report useful error failling to destroy domain gracefully
Resolves:https://bugzilla.redhat.com/show_bug.cgi?id=927620 #kill -STOP `pidof qemu-kvm` #virsh destroy $guest --graceful error: Failed to destroy domain testVM error: An error occurred, but the cause is unknown With --graceful, SIGTERM always is emitted to kill driver process, but it won't success till burning out waiting time in case of process being stopped. But domain destroy without --graceful can work, SIGKILL will be emitted to the stopped process after 10 secs which always kills a process even one that is currently stopped. So report an error after burning out waiting time in this case. --- src/qemu/qemu_process.c | 2 +- src/util/virprocess.c | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 4a7c612..e5b4679 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3930,7 +3930,7 @@ qemuProcessKill(virDomainObjPtr vm, unsigned int flags) } } - if ((flags & VIR_QEMU_PROCESS_KILL_NOWAIT)) { + if (flags & VIR_QEMU_PROCESS_KILL_NOWAIT) { virProcessKill(vm->pid, (flags & VIR_QEMU_PROCESS_KILL_FORCE) ? SIGKILL : SIGTERM); diff --git a/src/util/virprocess.c b/src/util/virprocess.c index 99db003..a79ed05 100644 --- a/src/util/virprocess.c +++ b/src/util/virprocess.c @@ -310,8 +310,9 @@ virProcessKillPainfully(pid_t pid, bool force) usleep(200 * 1000); } - VIR_DEBUG("Timed out waiting after SIGKILL to process %lld", - (long long)pid); + virReportError(VIR_ERR_OPERATION_INVALID, + _("Failed to terminate process %lld with SIG%s"), + (long long)pid, signame); cleanup: return ret; -- 1.8.1.4
On Fri, May 17, 2013 at 05:32:06PM +0800, Guannan Ren wrote:
Resolves:https://bugzilla.redhat.com/show_bug.cgi?id=927620
#kill -STOP `pidof qemu-kvm` #virsh destroy $guest --graceful error: Failed to destroy domain testVM error: An error occurred, but the cause is unknown
With --graceful, SIGTERM always is emitted to kill driver process, but it won't success till burning out waiting time in case of process being stopped. But domain destroy without --graceful can work, SIGKILL will be emitted to the stopped process after 10 secs which always kills a process even one that is currently stopped. So report an error after burning out waiting time in this case. --- src/qemu/qemu_process.c | 2 +- src/util/virprocess.c | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 4a7c612..e5b4679 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3930,7 +3930,7 @@ qemuProcessKill(virDomainObjPtr vm, unsigned int flags) } }
- if ((flags & VIR_QEMU_PROCESS_KILL_NOWAIT)) { + if (flags & VIR_QEMU_PROCESS_KILL_NOWAIT) { virProcessKill(vm->pid, (flags & VIR_QEMU_PROCESS_KILL_FORCE) ? SIGKILL : SIGTERM); diff --git a/src/util/virprocess.c b/src/util/virprocess.c index 99db003..a79ed05 100644 --- a/src/util/virprocess.c +++ b/src/util/virprocess.c @@ -310,8 +310,9 @@ virProcessKillPainfully(pid_t pid, bool force) usleep(200 * 1000); }
- VIR_DEBUG("Timed out waiting after SIGKILL to process %lld", - (long long)pid); + virReportError(VIR_ERR_OPERATION_INVALID, + _("Failed to terminate process %lld with SIG%s"), + (long long)pid, signame);
OPERATION_INVALID isn't really appropriate for this. I'd raise a system error, using errno==EBUSY to indicate that it needs to be re-tried to kill the process Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
Yes, it belongs to system related error rather than libvirt operation related. ----- Original Message ----- From: "Daniel P. Berrange" <berrange@redhat.com> To: "Guannan Ren" <gren@redhat.com> Cc: libvir-list@redhat.com Sent: Friday, May 17, 2013 6:14:56 PM Subject: Re: [libvirt] [PATCH] qemu: report useful error failling to destroy domain gracefully On Fri, May 17, 2013 at 05:32:06PM +0800, Guannan Ren wrote:
Resolves:https://bugzilla.redhat.com/show_bug.cgi?id=927620
#kill -STOP `pidof qemu-kvm` #virsh destroy $guest --graceful error: Failed to destroy domain testVM error: An error occurred, but the cause is unknown
With --graceful, SIGTERM always is emitted to kill driver process, but it won't success till burning out waiting time in case of process being stopped. But domain destroy without --graceful can work, SIGKILL will be emitted to the stopped process after 10 secs which always kills a process even one that is currently stopped. So report an error after burning out waiting time in this case. ---
- VIR_DEBUG("Timed out waiting after SIGKILL to process %lld", - (long long)pid); + virReportError(VIR_ERR_OPERATION_INVALID, + _("Failed to terminate process %lld with SIG%s"), + (long long)pid, signame);
OPERATION_INVALID isn't really appropriate for this. I'd raise a system error, using errno==EBUSY to indicate that it needs to be re-tried to kill the process Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
participants (3)
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Daniel P. Berrange -
Guan Nan Ren -
Guannan Ren