Re: [PATCH] storage: rbd: Improve the error when start a pool based on non-exist rados object

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On 02/06/2015 08:55 PM, Ján Tomko wrote:
On Fri, Feb 06, 2015 at 07:45:37PM +0800, Shanzhi Yu wrote:
When start/create a pool based on non-exist rados object, the error will be like
$virsh pool-start p-c
error: Failed to start pool p-c
error: failed to create the RBD IoCTX. Does the pool 'libvirt-pool-clone' exist?: No such file or directory

update it to

error: Failed to start pool p-c
error: internal error: failed to create the RBD IoCTX. the rados pool 'libvirt-pool-clone' is not available
This message is missing the actual error: 'no such file or directory'
returned by rados_ioctx_create. This return value has been added
to the error message by commit 761491eb

Indeed. Just catch that commit

Maybe we could just drop the hint about the pool existence?
error: failed to create the RBD IoCTX: No such file or directory

Would it be better to wrap the error returned by librados? Returning a libvirt error will be more friendly to a libvirt user


Jan
Signed-off-by: Shanzhi Yu <shyu@xxxxxxxxxx>
---
  src/storage/storage_backend_rbd.c | 6 ++++--
  1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/storage/storage_backend_rbd.c b/src/storage/storage_backend_rbd.c
index 57182de..98e7fe7 100644
--- a/src/storage/storage_backend_rbd.c
+++ b/src/storage/storage_backend_rbd.c
@@ -236,8 +236,10 @@ static int virStorageBackendRBDOpenIoCTX(virStorageBackendRBDStatePtr ptr, virSt
  {
      int r = rados_ioctx_create(ptr->cluster, pool->def->source.name, &ptr->ioctx);
      if (r < 0) {
-        virReportSystemError(-r, _("failed to create the RBD IoCTX. Does the pool '%s' exist?"),
-                             pool->def->source.name);
+        virReportError(VIR_ERR_INTERNAL_ERROR,
+			_("failed to create the RBD IoCTX. "
+			"the rados pool '%s' is not available"),
+			pool->def->source.name);
      }
      return r;
  }
--
2.1.0

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Regards
shyu

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