В письме от Понедельник, 08-июл-2013 22:20:12 пользователь Александр написал:
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.
checked virConnectListAllDomains with domains ptr, still locks