[libvirt] [PATCHv2] iscsi: do not fail to stop a stopped pool

[John Ferlan]

On 04/30/2015 07:06 AM, Ján Tomko wrote:
> Just as we allow stopping filesystem pools when they were unmounted
> externally, do not fail to stop an iscsi pool when someone else
> closed the session externally.
> 
> Reported at:
> https://bugzilla.redhat.com/show_bug.cgi?id=1171984
> ---
> v2: Do not report errors when returning success (use probe=true)
>     refrain from making controversial claims in the commit message
> 
>  src/storage/storage_backend_iscsi.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 

So if someone does :

iscsiadm -m session

to find the session(s), $iqn and $ipaddr value and they perform a :

iscsiadm -m node -T $iqn -p $ipaddr --logout

In order to logout out of the session, this patch will ensure that the
pool-destroy path doesn't fail. For that I agree. I still disagree with
the bz being listed, but that's your choice.

ACK

John

> diff --git a/src/storage/storage_backend_iscsi.c b/src/storage/storage_backend_iscsi.c
> index 197d333..9e2d01e 100644
> --- a/src/storage/storage_backend_iscsi.c
> +++ b/src/storage/storage_backend_iscsi.c
> @@ -449,8 +449,13 @@ virStorageBackendISCSIStopPool(virConnectPtr conn ATTRIBUTE_UNUSED,
>                                 virStoragePoolObjPtr pool)
>  {
>      char *portal;
> +    char *session;
>      int ret = -1;
>  
> +    if ((session = virStorageBackendISCSISession(pool, true)) == NULL)
> +        return 0;
> +    VIR_FREE(session);
> +
>      if ((portal = virStorageBackendISCSIPortal(&pool->def->source)) == NULL)
>          return -1;
>  
>