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From ec2f52e9e935136d8517567bbe0e56c6e8c40af1 Mon Sep 17 00:00:00 2001
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Message-Id: <ec2f52e9e935136d8517567bbe0e56c6e8c40af1@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Wed, 19 Feb 2020 15:10:05 +0100
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Subject: [PATCH] qemu: hotplug: Fix handling of the 'copy-on-read' layer with
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blockdev
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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My original implementation was completely broken because it attempted to
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use object-add/del instead of blockdev-add/del.
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https://bugzilla.redhat.com/show_bug.cgi?id=1798366
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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
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(cherry picked from commit b71cf8726c25ea135ac81051e332544e6b886ad2)
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https://bugzilla.redhat.com/show_bug.cgi?id=1798366
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Message-Id: <170358b3722e56fc308e7cf3b0a2625349346ae9.1582120424.git.pkrempa@redhat.com>
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Reviewed-by: Ján Tomko <jtomko@redhat.com>
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---
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src/qemu/qemu_hotplug.c | 25 ++++++++++++++++---------
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1 file changed, 16 insertions(+), 9 deletions(-)
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diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
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index 31d455505b..12bc1f9dd5 100644
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--- a/src/qemu/qemu_hotplug.c
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+++ b/src/qemu/qemu_hotplug.c
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@@ -680,6 +680,7 @@ qemuDomainAttachDiskGeneric(virQEMUDriverPtr driver,
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g_autoptr(virQEMUDriverConfig) cfg = virQEMUDriverGetConfig(driver);
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g_autoptr(virJSONValue) corProps = NULL;
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g_autofree char *corAlias = NULL;
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+ bool corAdded = false;
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bool blockdev = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV);
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if (qemuDomainStorageSourceChainAccessAllow(driver, vm, disk->src) < 0)
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@@ -692,9 +693,12 @@ qemuDomainAttachDiskGeneric(virQEMUDriverPtr driver,
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goto cleanup;
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if (blockdev) {
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- if (disk->copy_on_read == VIR_TRISTATE_SWITCH_ON &&
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- !(corProps = qemuBlockStorageGetCopyOnReadProps(disk)))
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- goto cleanup;
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+ if (disk->copy_on_read == VIR_TRISTATE_SWITCH_ON) {
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+ if (!(corProps = qemuBlockStorageGetCopyOnReadProps(disk)))
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+ goto cleanup;
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+
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+ corAlias = g_strdup(QEMU_DOMAIN_DISK_PRIVATE(disk)->nodeCopyOnRead);
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+ }
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if (!(data = qemuBuildStorageSourceChainAttachPrepareBlockdev(disk->src,
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priv->qemuCaps)))
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@@ -719,9 +723,12 @@ qemuDomainAttachDiskGeneric(virQEMUDriverPtr driver,
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if (qemuBlockStorageSourceChainAttach(priv->mon, data) < 0)
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goto exit_monitor;
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- if (corProps &&
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- qemuMonitorAddObject(priv->mon, &corProps, &corAlias) < 0)
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- goto exit_monitor;
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+ if (corProps) {
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+ if (qemuMonitorBlockdevAdd(priv->mon, &corProps) < 0)
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+ goto exit_monitor;
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+
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+ corAdded = true;
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+ }
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if (qemuDomainAttachExtensionDevice(priv->mon, &disk->info) < 0)
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goto exit_monitor;
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@@ -763,8 +770,8 @@ qemuDomainAttachDiskGeneric(virQEMUDriverPtr driver,
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return ret;
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exit_monitor:
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- if (corAlias)
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- ignore_value(qemuMonitorDelObject(priv->mon, corAlias));
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+ if (corAdded)
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+ ignore_value(qemuMonitorBlockdevDel(priv->mon, corAlias));
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qemuBlockStorageSourceChainDetach(priv->mon, data);
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if (qemuDomainObjExitMonitor(driver, vm) < 0)
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@@ -4252,7 +4259,7 @@ qemuDomainRemoveDiskDevice(virQEMUDriverPtr driver,
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qemuDomainObjEnterMonitor(driver, vm);
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if (corAlias)
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- ignore_value(qemuMonitorDelObject(priv->mon, corAlias));
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+ ignore_value(qemuMonitorBlockdevDel(priv->mon, corAlias));
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if (diskBackend)
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qemuBlockStorageSourceChainDetach(priv->mon, diskBackend);
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--
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2.25.0
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