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From 9cccc94408d59ddd8f3b999bb62e133d443987f5 Mon Sep 17 00:00:00 2001
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Tue, 27 Jul 2021 19:12:09 +0200
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Subject: [PATCH] qemu: block: Use 'discard': 'unmap' for the copy-on-read
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block filter
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---
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src/qemu/qemu_block.c | 1 +
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tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args | 2 +-
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2 files changed, 2 insertions(+), 1 deletion(-)
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diff --git a/src/qemu/qemu_block.c b/src/qemu/qemu_block.c
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index 1610f72d07..4691dff4f7 100644
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--- a/src/qemu/qemu_block.c
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+++ b/src/qemu/qemu_block.c
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@@ -2157,6 +2157,7 @@ qemuBlockStorageGetCopyOnReadProps(virDomainDiskDef *disk)
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"s:driver", "copy-on-read",
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"s:node-name", priv->nodeCopyOnRead,
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"s:file", disk->src->nodeformat,
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+ "s:discard", "unmap",
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NULL));
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return ret;
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diff --git a/tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args b/tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args
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index 93d3a06c88..690d4f3ea1 100644
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--- a/tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args
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+++ b/tests/qemuxml2argvdata/disk-copy_on_read.x86_64-latest.args
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@@ -30,7 +30,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-test/.config \
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-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 \
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-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/f14.img","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}' \
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-blockdev '{"node-name":"libvirt-2-format","read-only":false,"driver":"qcow2","file":"libvirt-2-storage"}' \
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--blockdev '{"driver":"copy-on-read","node-name":"libvirt-CoR-vda","file":"libvirt-2-format"}' \
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+-blockdev '{"driver":"copy-on-read","node-name":"libvirt-CoR-vda","file":"libvirt-2-format","discard":"unmap"}' \
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-device virtio-blk-pci,bus=pci.0,addr=0x4,drive=libvirt-CoR-vda,id=virtio-disk0,bootindex=2 \
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-blockdev '{"driver":"file","filename":"/var/lib/libvirt/Fedora-14-x86_64-Live-KDE.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \
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-blockdev '{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}' \
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--
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2.32.0
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