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From d0bc458b5072ac0e7ee4d27431d5f614f8dd4328 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Thu, 6 Dec 2018 17:12:39 +0000
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Subject: [PATCH 14/15] block-backend: Set werror/rerror defaults in blk_new()
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <20181206171240.5674-15-kwolf@redhat.com>
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Patchwork-id: 83291
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O-Subject: [RHEL-8.0 qemu-kvm PATCH 14/15] block-backend: Set werror/rerror defaults in blk_new()
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Bugzilla: 1657637
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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Currently, the default values for werror and rerror have to be set
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explicitly with blk_set_on_error() by the callers of blk_new(). The only
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caller actually doing this is blockdev_init(), which is called for
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BlockBackends created using -drive.
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In particular, anonymous BlockBackends created with
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-device ...,drive=<node-name> didn't get the correct default set and
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instead defaulted to the integer value 0 (= BLOCKDEV_ON_ERROR_REPORT).
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This is the intended default for rerror anyway, but the default for
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werror should be BLOCKDEV_ON_ERROR_ENOSPC.
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Set the defaults in blk_new() instead so that they apply no matter what
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way the BlockBackend was created.
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Reviewed-by: Fam Zheng <famz@redhat.com>
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(cherry picked from commit cb53460b708db3617ab73248374d071d5552c263)
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Signed-off-by: Kevin Wolf <kwolf@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/block-backend.c | 3 +++
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tests/qemu-iotests/067.out | 1 +
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2 files changed, 4 insertions(+)
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diff --git a/block/block-backend.c b/block/block-backend.c
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index 91abfe6..7ae5832 100644
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--- a/block/block-backend.c
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+++ b/block/block-backend.c
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@@ -325,6 +325,9 @@ BlockBackend *blk_new(uint64_t perm, uint64_t shared_perm)
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blk->shared_perm = shared_perm;
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blk_set_enable_write_cache(blk, true);
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+ blk->on_read_error = BLOCKDEV_ON_ERROR_REPORT;
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+ blk->on_write_error = BLOCKDEV_ON_ERROR_ENOSPC;
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+
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block_acct_init(&blk->stats);
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notifier_list_init(&blk->remove_bs_notifiers);
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diff --git a/tests/qemu-iotests/067.out b/tests/qemu-iotests/067.out
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index 2e71cff..b10c71d 100644
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--- a/tests/qemu-iotests/067.out
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+++ b/tests/qemu-iotests/067.out
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@@ -385,6 +385,7 @@ Testing: -device virtio-scsi -device scsi-cd,id=cd0
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{
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"return": [
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{
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+ "io-status": "ok",
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"device": "",
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"locked": false,
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"removable": true,
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--
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1.8.3.1
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