[libvirt-users] shutdown a windows guest take ages..... (20- 34 minutes here)
hi, i use libvirt 1.0.2 (-r1 , gentoo linux). when i create a vm with win7 guest, virtio nic, virtio hdd, all is running fine. but when i shutdown the windows guest, it takes somestimes 20-34 minutes !!! iotop shows me in the whole time writing with 2,xxmb/sec. is the complete machine "rewritten" to disk? i use disk.images on a raid6, but hey, dd shows me it can writes there with 26mb/sec. any ideas what causes these long shutdown times? thanks for any hints, marko
On 02/02/13 18:34, weber@zackbummfertig.de wrote:
hi,
Hi Marko,
i use libvirt 1.0.2 (-r1 , gentoo linux). when i create a vm with win7 guest, virtio nic, virtio hdd, all is running fine. but when i shutdown the windows guest, it takes somestimes 20-34 minutes !!! iotop shows me in the whole time writing with 2,xxmb/sec. is the complete machine "rewritten" to disk?
i use disk.images on a raid6, but hey, dd shows me it can writes there with 26mb/sec.
any ideas what causes these long shutdown times?
just a quick idea. Wasn't the machine updating? Windows 7 is pulling in quite a lot updates during the first few boots and spends ages installing them. This would explain the delays and constant disk writes. Please watch the shutdown sequence of the guest to see what it's doing at that time. After say 10 start-shutdown cycles the machine should be up to date and shut down quickly.
thanks for any hints,
marko
Peter
Hello Peter, i will give that a try. But why arent the updates written after first shutdown? on a normal pc the updates are down after one reboot. i will do some start - shutdowns like u suggested and message you. marko Am 2013-02-04 10:38, schrieb Peter Krempa:
On 02/02/13 18:34, weber@zackbummfertig.de wrote:
hi,
Hi Marko,
i use libvirt 1.0.2 (-r1 , gentoo linux). when i create a vm with win7 guest, virtio nic, virtio hdd, all is running fine. but when i shutdown the windows guest, it takes somestimes 20-34 minutes !!! iotop shows me in the whole time writing with 2,xxmb/sec. is the complete machine "rewritten" to disk?
i use disk.images on a raid6, but hey, dd shows me it can writes there with 26mb/sec.
any ideas what causes these long shutdown times?
just a quick idea. Wasn't the machine updating? Windows 7 is pulling in quite a lot updates during the first few boots and spends ages installing them. This would explain the delays and constant disk writes.
Please watch the shutdown sequence of the guest to see what it's doing at that time. After say 10 start-shutdown cycles the machine should be up to date and shut down quickly.
thanks for any hints,
marko
Peter
Hi Peter, the shutdowns of my windows7 prof, still taking ages...... up to 20-35 minutes !!! i did what you suggested. i started the machine and watched what happens via the "resource manager" (the one in the taskmanager). i could see that day that windows was leeching updates. after a time this was finished. i said then "install updates" and the resource manager showed action for some minutes. after that all was quite. shutdown the machine - took again 29 minutes. on the console via iotop i could see the virtual machine was writing all the time with 10~11mb/sec for that long time. i restarted machine. shutdown again, with 25-30 mins again again again again again............ Then i converted the image (didnt know if i told that before that i use images for hdd), from RAW to QCOW2 in virt-manager i set the hdd again, virtio - format qcow2 - cache writethrough - io mode "default" the raw image was 64 GB, after convert to qcow2 it has 28 GB. i started first time the machine and wait until the resource manager told me theres no more action. i shutdown the machine. it took again 30-35 mins to shutdown. BUT! after shutdown the image was not 28 GB , it was 43 GB restarted the machine, wait for no action and system idling shutdown = 28 mins and that value is kept. i store the image on a raid6. i use gentoo linux - kernel 3.7.9 app-emulation/qemu 1.2.2-r3 app-emulation/libvirt 1.0.2 -r1 Do you have any ideas? What can cause this long shutdowns? thanks marko Am 2013-02-04 10:38, schrieb Peter Krempa:
On 02/02/13 18:34, weber@zackbummfertig.de wrote:
hi,
Hi Marko,
i use libvirt 1.0.2 (-r1 , gentoo linux). when i create a vm with win7 guest, virtio nic, virtio hdd, all is running fine. but when i shutdown the windows guest, it takes somestimes 20-34 minutes !!! iotop shows me in the whole time writing with 2,xxmb/sec. is the complete machine "rewritten" to disk?
i use disk.images on a raid6, but hey, dd shows me it can writes there with 26mb/sec.
any ideas what causes these long shutdown times?
just a quick idea. Wasn't the machine updating? Windows 7 is pulling in quite a lot updates during the first few boots and spends ages installing them. This would explain the delays and constant disk writes.
Please watch the shutdown sequence of the guest to see what it's doing at that time. After say 10 start-shutdown cycles the machine should be up to date and shut down quickly.
thanks for any hints,
marko
Peter
participants (3)
-
Marko Weber | ZBF -
Peter Krempa -
weber＠zackbummfertig.de