[libvirt] [PATCH v2] qemu: fix return value issue in qemuDomainSetMemoryParameters

[Eric Blake]

On 08/01/2011 09:06 AM, Alex Jia wrote:
> whether or not previous return value is -1, the following codes will be
> executed for a inactive guest in qemuDomainSetMemoryParameters:
> ret = virDomainSaveConfig(driver->configDir, persistentDef);
> and if everything is okay, 'ret' is assigned to 0, the previous 'ret'
> will be overwritten, this patch will fix this issue.
> 
> * src/qemu/qemu_driver.c: avoid return value is overwritten when set
>   min_guarante value to a inactive guest.
> 
> * how to reproduce?
>   % virsh memtune ${guestname} --min_guarante 1024
>   % echo $?
> 
>   Note: guest must be inactive, in fact, 'min_guarante' hasn't been implemented
>   in memory tunable, and I can get the error when check actual libvirtd.log,
>   however, virsh hasn't raised any error information, and return value is 0.
> 
> Signed-off-by: Alex Jia <ajia at redhat.com>
> ---
>  src/qemu/qemu_driver.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)

ACK and pushed with one nit fixed:

>      if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
> -        ret = virDomainSaveConfig(driver->configDir, persistentDef);
> +        if(virDomainSaveConfig(driver->configDir, persistentDef) < 0)

space between 'if' and '('.

-- 
Eric Blake   eblake at redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org