Re: [libvirt-users] deadlock on connection loosing

В письме от Понедельник, 08-июл-2013 14:39:57 Вы написали: > On 07.07.2013 01:53, Александр wrote: > > В письме от Воскресенье, 30-июн-2013 03:41:37 пользователь Александр написал: > >> В письме от Вторник, 25-июн-2013 11:47:10 пользователь Michal Privoznik > > .... > > > i have found source of problem, my code looks like this: > > > > int count = virConnectListAllDomains(connection, NULL, 0); > > .... > > domain = virDomainDefineXML(connection, d.write_to_string().c_str()); > > > > > > call to virConnectListAllDomains always cause libvirt deadlock. > > > > and another question, is here exists any other way to determinate number > > of > > persistent domains ? > > This code is just a reproducer. Client shouldn't be able to deadlock > libvirtd at all. Any API call should be deadlock safe (unless called > from a callback). Which reminds me - do you use callbacks? > > Michal yes, i using callbacks for errors, for now just copypasted example callback to print errors static void libvirt_error_handler(void *userdata, virErrorPtr err) { fprintf(stderr, "Failure of libvirt library call:\n"); fprintf(stderr, " Code: %d\n", err->code); fprintf(stderr, " Domain: %d\n", err->domain); fprintf(stderr, " Message: %s\n", err->message); fprintf(stderr, " Level: %d\n", err->level); fprintf(stderr, " str1: %s\n", err->str1); fprintf(stderr, " str2: %s\n", err->str2); fprintf(stderr, " str3: %s\n", err->str3); fprintf(stderr, " int1: %d\n", err->int1); fprintf(stderr, " int2: %d\n", err->int2); } int init_libvirt() { virSetErrorFunc(NULL, libvirt_error_handler); libvirt_connection = virConnectOpen("qemu:///system"); ..... i will also check virConnectListAllDomains with correct pointer instead of null later, now have some other work to do.