[libvirt] 答复: [PATCH v2] qemu: change monitor.sock from /var/lib/libvirt/qemu/domain-*** to /var/run/libvirt/qemu/domain-***

Caoxinhua caoxinhua at huawei.com
Fri Oct 27 01:47:35 UTC 2017

Yes,In qemuxml2argvtest case, mymain call qemuTestDriverInit to init qemu driver, qemuTestDriverInit call mkdtemp() to init stateDir, so stateDir is randomly.  But '-monitor' part of the command line must be a const value. Can I use a const value "/tmp/lib" to instead of random value at qemuxml2argvtest?

发件人: Michal Privoznik [mailto:mprivozn at redhat.com] 
发送时间: 2017年10月27日 0:17
收件人: Caoxinhua; libvir-list at redhat.com; jferlan at redhat.com; mkletzan at redhat.com; berrange at redhat.com
抄送: Yanqiangjun; Huangweidong (C); Wangjing (King, Euler); weifuqiang
主题: Re: [libvirt] [PATCH v2] qemu: change monitor.sock from /var/lib/libvirt/qemu/domain-*** to /var/run/libvirt/qemu/domain-***

On 10/16/2017 04:08 AM, xinhua.Cao wrote:
> directory /var/lib alway is Persistence directory, but in redhat system, /var/run is memory directory.
> our running domain xml is saved at /var/run/libvirt/qemu. so if we 
> cold reset system, the /var/run/libvirt/qemu directory is clear, but 
> /var/lib/libvirt/qemu/domain-*** is saved. so there have same /var/lib/libvirt/qemu/domain-*** directory will be left over at system cold reset.
> ---
>  src/qemu/qemu_domain.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 
> ed27a91..3e6fe9b 100644
> --- a/src/qemu/qemu_domain.c
> +++ b/src/qemu/qemu_domain.c
> @@ -1674,7 +1674,7 @@ qemuDomainSetPrivatePaths(virQEMUDriverPtr driver,
>          goto cleanup;
>      if (!priv->libDir &&
> -        virAsprintf(&priv->libDir, "%s/domain-%s", cfg->libDir, domname) < 0)
> +        virAsprintf(&priv->libDir, "%s/domain-%s", cfg->stateDir, 
> + domname) < 0)
>          goto cleanup;
>      if (!priv->channelTargetDir &&

Almost. I see a problem with this patch. Problem is that qemuxml2argvtest needs to be updated. Which is not trivial because state dir is a tempdir (mkdtemp()), and thus '-monitor' part of the command line changes with each test invocation.


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