Re: [PATCH v2] fix a ambiguous output of the command:'virsh vol-create-as'

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On 07.10.2013 16:04, Hongwei Bi wrote:
> I created a storage volume(eg: test) from a storage pool(eg:vg10) using
> the following command:"virsh vol-create-as --pool vg10 --name test --capacity 300M."
> When I re-executed the above command, the output was as the following:
> "error: Failed to create vol test
>  error: Storage volume not found: storage vol 'test' already exists"
> 
> I think the output "Storage volume not found" is not appropriate. Because in fact storage
> vol test has been found at this time. And then I think virErrorNumber should includes
> VIR_ERR_STORAGE_EXIST which can also be used elsewhere. So I make this patch. The result
> is as following:
> "error: Failed to create vol test
>  error: storage volume 'test' exists already"
> 
> ---
>  include/libvirt/virterror.h  |    1 +
>  src/storage/storage_driver.c |    4 ++--
>  src/util/virerror.c          |    6 ++++++
>  3 files changed, 9 insertions(+), 2 deletions(-)
> 
> diff --git a/include/libvirt/virterror.h b/include/libvirt/virterror.h
> index c1960c8..fd14237 100644
> --- a/include/libvirt/virterror.h
> +++ b/include/libvirt/virterror.h
> @@ -296,6 +296,7 @@ typedef enum {
>      VIR_ERR_ACCESS_DENIED = 88,         /* operation on the object/resource
>                                             was denied */
>      VIR_ERR_DBUS_SERVICE = 89,          /* error from a dbus service */
> +    VIR_ERR_STORAGE_VOL_EXISTS = 90,         /* the storage vol already exists */
>  } virErrorNumber;
>  
>  /**
> diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
> index 6c39284..d419a36 100644
> --- a/src/storage/storage_driver.c
> +++ b/src/storage/storage_driver.c
> @@ -1538,8 +1538,8 @@ storageVolCreateXML(virStoragePoolPtr obj,
>          goto cleanup;
>  
>      if (virStorageVolDefFindByName(pool, voldef->name)) {
> -        virReportError(VIR_ERR_NO_STORAGE_VOL,
> -                       _("storage vol '%s' already exists"), voldef->name);
> +        virReportError(VIR_ERR_STORAGE_VOL_EXISTS,
> +                       _("'%s'"), voldef->name);
>          goto cleanup;
>      }
>  
> diff --git a/src/util/virerror.c b/src/util/virerror.c
> index ca25678..3f55cec 100644
> --- a/src/util/virerror.c
> +++ b/src/util/virerror.c
> @@ -1004,6 +1004,12 @@ virErrorMsg(virErrorNumber error, const char *info)
>              else
>                  errmsg = _("Storage volume not found: %s");
>              break;
> +        case VIR_ERR_STORAGE_VOL_EXISTS:
> +            if (info == NULL)
> +                errmsg = _("this storage volume exists already");
> +            else
> +                errmsg = _("storage volume %s exists already");
> +            break;
>          case VIR_ERR_STORAGE_PROBE_FAILED:
>              if (info == NULL)
>                  errmsg = _("Storage pool probe failed");
> 

ACKed and pushed.

Michal

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