Re: [PATCH v2 2/2] storage: RBD: do not return error when deleting non-existent volume

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On Thu, May 28, 2015 at 05:29:55PM +0200, Erik Skultety wrote:
RBD API returns negative value of errno, in that case we can silently
ignore if RBD tries to delete a non-existent volume, just like FS
backend does.
---
src/storage/storage_backend_rbd.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/storage/storage_backend_rbd.c b/src/storage/storage_backend_rbd.c
index ae4bcb3..8e8d7a7 100644
--- a/src/storage/storage_backend_rbd.c
+++ b/src/storage/storage_backend_rbd.c
@@ -1,7 +1,7 @@
/*
 * storage_backend_rbd.c: storage backend for RBD (RADOS Block Device) handling
 *
- * Copyright (C) 2013-2014 Red Hat, Inc.
+ * Copyright (C) 2013-2015 Red Hat, Inc.
 * Copyright (C) 2012 Wido den Hollander

I wonder how come nobody complained in reply to this patch already...

 *
 * This library is free software; you can redistribute it and/or
@@ -426,7 +426,7 @@ static int virStorageBackendRBDDeleteVol(virConnectPtr conn,
    VIR_DEBUG("Removing RBD image %s/%s", pool->def->source.name, vol->name);

    if (flags & VIR_STORAGE_VOL_DELETE_ZEROED)
-        VIR_WARN("%s", _("This storage backend does not supported zeroed removal of volumes"));
+        VIR_WARN("%s", _("This storage backend does not support zeroed removal of volumes"));


This could be another trivial patch, but it's *so* trivial, I'm OK
with keeping it here.

    if (virStorageBackendRBDOpenRADOSConn(&ptr, conn, &pool->def->source) < 0)
        goto cleanup;
@@ -435,7 +435,7 @@ static int virStorageBackendRBDDeleteVol(virConnectPtr conn,
        goto cleanup;

    r = rbd_remove(ptr.ioctx, vol->name);
-    if (r < 0) {
+    if (r < 0 && (-r) != ENOENT) {

This makes sense.  ACK.

        virReportSystemError(-r, _("failed to remove volume '%s/%s'"),
                             pool->def->source.name, vol->name);
        goto cleanup;
--
1.9.3

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