[libvirt] increase number of libvirt threads by starting tansient guest doamin - is it a bug?

[web2]

 Hi Jim,

i use libvirt 1.1.3.5 on fedora core 20, the vm´s i startet are xen-vm´s.

i also take a look on libvirt 1.1.2 on an openSuSE 13.1 und also on libvirt 1.0.2 on an OpenSuSE 12.3 and i didn´t see threads that are created and not closed . But on the openSuSE-Systems the vm´s are KVM/qemu.

on the fedora-system i will attach gdb to the libvirtd-process, and hope to see what´s doing on.

all the best
max

 
----------------ursprüngliche Nachricht-----------------
Von: "Jim Fehlig" jfehlig at suse.com 
An: ustermann78 at web.de 
Kopie: libvir-list at redhat.com, libvirt-users at redhat.com 
Datum: Tue, 30 Sep 2014 18:44:17 -0600
-------------------------------------------------
 
 
> ustermann78 at web.de wrote:
>> hello,
>>
>> if i start a transient guest doamin via "virsh create abcd.xml" i see an 
>> additional libvirt thread and also some open files:
>>
>> pstree -h `pgrep libvirtd`
>> libvirtd───11*[{libvirtd}]
>>
>> libvirtd 3016 root 21w REG 253,0 6044 1052094 
>> /var/log/libvirt/libxl/abcd.log
>> libvirtd 3016 root 22r FIFO 0,8 0t0 126124 pipe
>> libvirtd 3016 root 23w FIFO 0,8 0t0 126124 pipe
>> libvirtd 3016 root 24u REG 0,37 0 4 /proc/xen/privcmd
>> libvirtd 3016 root 25u unix 0xffff8807d2c3ad80 0t0 126125 socket
>> libvirtd 3016 root 26r FIFO 0,8 0t0 126127 pipe
>> libvirtd 3016 root 27w FIFO 0,8 0t0 126127 pipe
>> libvirtd 3016 root 28r FIFO 0,8 0t0 124783 pipe
>> libvirtd 3016 root 29w FIFO 0,8 0t0 124783 pipe
>> libvirtd 3016 root 30r FIFO 0,8 0t0 127140 pipe
>> libvirtd 3016 root 31w FIFO 0,8 0t0 127140 pipe
>>
>> if i destroy these vm via "virsh destroy abcd", i see that the additional 
>> thread still exists and also the list of openfiles is the same.
>> 
> 
> I don't see this behavior with current libvirt git master
> 
> # pstree `pgrep libvirtd`
> libvirtd───10*[{libvirtd}]
> # virsh create ./test.xml
> Domain test created from ./test.xml
> # pstree `pgrep libvirtd`
> libvirtd───11*[{libvirtd}]
> # virsh destroy test
> Domain test destroyed
> # pstree `pgrep libvirtd`
> libvirtd───10*[{libvirtd}]
> 
> All file descriptors opened when the domain was created were closed as well.
> 
> What version of libvirt are you using?
> 
> Regards,
> Jim
> 
> 

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