Yeah, I have check the default path, so I am confused that why I can't find "libvirt-sock", when I start libvirtd manually. How do you start self-built libvirtd? Thanks a lot! From: itxx00@gmail.com Date: Thu, 1 Nov 2012 21:54:21 +0800 Subject: Re: [libvirt-users] error : virPidFileAcquirePath:345 : Failed to acquire pid file '/home/corey/.libvirt/libvirtd.pid': Resource temporarily unavailable To: wherethriving@hotmail.com CC: libvirt-users@redhat.com 2012/11/1 何鑫 <wherethriving@hotmail.com> I have checked that I removed all distro things, ran self-built virsh, libvirtd. To make sure, I use absolute paths for running. Also I will check process status in time. This is "ps" shown: 2996 1 3 08:48 ? 00:00:00 /usr/local/libvirt/sbin/libvirtd -d Is there some thing wrong? I can't search "libvirt-sock" after runing it. can you see any tips in libvirtd --help ? is there a default sock path in the help content?