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From 2bc98e9eaddaa3a7381b0f245ec37bb47f8baf81 Mon Sep 17 00:00:00 2001
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From: John Snow <jsnow@redhat.com>
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Date: Tue, 25 Sep 2018 22:34:20 +0100
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Subject: [PATCH 17/28] block/mirror: don't install backing chain on abort
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RH-Author: John Snow <jsnow@redhat.com>
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Message-id: <20180925223431.24791-15-jsnow@redhat.com>
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Patchwork-id: 82277
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O-Subject: [RHEL8/rhel qemu-kvm PATCH 14/25] block/mirror: don't install backing chain on abort
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Bugzilla: 1632939
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RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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In cases where we abort the block/mirror job, there's no point in
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installing the new backing chain before we finish aborting.
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Signed-off-by: John Snow <jsnow@redhat.com>
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Message-id: 20180906130225.5118-6-jsnow@redhat.com
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Reviewed-by: Jeff Cody <jcody@redhat.com>
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Reviewed-by: Max Reitz <mreitz@redhat.com>
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Signed-off-by: Max Reitz <mreitz@redhat.com>
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(cherry picked from commit c2924ceaa7f1866148e2847c969fc1902a2524fa)
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Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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block/mirror.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/block/mirror.c b/block/mirror.c
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index 9bed603..057db7c 100644
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--- a/block/mirror.c
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+++ b/block/mirror.c
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@@ -514,7 +514,7 @@ static void mirror_exit(Job *job)
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* required before it could become a backing file of target_bs. */
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bdrv_child_try_set_perm(mirror_top_bs->backing, 0, BLK_PERM_ALL,
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&error_abort);
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- if (s->backing_mode == MIRROR_SOURCE_BACKING_CHAIN) {
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+ if (ret == 0 && s->backing_mode == MIRROR_SOURCE_BACKING_CHAIN) {
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BlockDriverState *backing = s->is_none_mode ? src : s->base;
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if (backing_bs(target_bs) != backing) {
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bdrv_set_backing_hd(target_bs, backing, &local_err);
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--
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1.8.3.1
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