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From a921cd57872bf1ed798df6c7268d07c29cba9e32 Mon Sep 17 00:00:00 2001
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Message-Id: <a921cd57872bf1ed798df6c7268d07c29cba9e32@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Tue, 30 Jan 2018 13:02:02 +0100
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Subject: [PATCH] storage: util: Properly ignore errors when backing volume is
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 inaccessible
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Commit 000e9504559 tried to fix improper bracketing when refreshing disk
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volume stats for a backing volume. Unfortunately the condition is still
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wrong as in cases as the backing store being inaccessible
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storageBackendUpdateVolTargetInfo returns -2 if instructed to ignore
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errors. The condition does not take this into account.
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Dumping XML of a volume which has inacessible backing store would then
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result into:
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 # virsh vol-dumpxml http.img --pool default
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 error: An error occurred, but the cause is unknown
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Properly ignore -2 for backing volumes.
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1540022
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(cherry picked from commit b2c5f28a72465bf047311828c8c66112c8ca84e5)
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---
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 src/storage/storage_util.c | 2 +-
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 1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c
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index 9e1b63a436..61a87b37b6 100644
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--- a/src/storage/storage_util.c
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+++ b/src/storage/storage_util.c
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@@ -1918,7 +1918,7 @@ virStorageBackendUpdateVolInfo(virStorageVolDefPtr vol,
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                                                  withBlockVolFormat,
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                                                  VIR_STORAGE_VOL_OPEN_DEFAULT |
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                                                  VIR_STORAGE_VOL_OPEN_NOERROR,
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-                                                 readflags)) < 0)
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+                                                 readflags)) == -1)
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         return ret;
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     return 0;
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-- 
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2.16.1
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