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From 0fe11b92a8278ffab202033a61340649b0296368 Mon Sep 17 00:00:00 2001
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Message-Id: <0fe11b92a8278ffab202033a61340649b0296368@dist-git>
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From: Peter Krempa <pkrempa@redhat.com>
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Date: Tue, 31 Jan 2023 15:30:51 +0100
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Subject: [PATCH] qemu: domain: Store fdset ID for disks passed to qemu via FD
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To ensure that we can hot-unplug the disk including the associated fdset
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we need to store the fdset ID in the status XML.
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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
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Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
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(cherry picked from commit f730b1e4f203cbabe363aab246d8a1679063f756)
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https://bugzilla.redhat.com/show_bug.cgi?id=2040272
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---
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src/qemu/qemu_domain.c | 17 ++++++++++++++++-
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tests/qemustatusxml2xmldata/modern-in.xml | 3 +++
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2 files changed, 19 insertions(+), 1 deletion(-)
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diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
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index 226d4d6dc1..247134672b 100644
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--- a/src/qemu/qemu_domain.c
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+++ b/src/qemu/qemu_domain.c
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@@ -1941,6 +1941,8 @@ qemuStorageSourcePrivateDataParse(xmlXPathContextPtr ctxt,
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g_autofree char *httpcookiealias = NULL;
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g_autofree char *tlskeyalias = NULL;
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g_autofree char *thresholdEventWithIndex = NULL;
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+ bool fdsetPresent = false;
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+ unsigned int fdSetID;
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src->nodestorage = virXPathString("string(./nodenames/nodename[@type='storage']/@name)", ctxt);
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src->nodeformat = virXPathString("string(./nodenames/nodename[@type='format']/@name)", ctxt);
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@@ -1957,7 +1959,9 @@ qemuStorageSourcePrivateDataParse(xmlXPathContextPtr ctxt,
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httpcookiealias = virXPathString("string(./objects/secret[@type='httpcookie']/@alias)", ctxt);
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tlskeyalias = virXPathString("string(./objects/secret[@type='tlskey']/@alias)", ctxt);
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- if (authalias || encalias || httpcookiealias || tlskeyalias) {
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+ fdsetPresent = virXPathUInt("string(./fdsets/fdset[@type='storage']/@id)", ctxt, &fdSetID) == 0;
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+
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+ if (authalias || encalias || httpcookiealias || tlskeyalias || fdsetPresent) {
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if (!src->privateData &&
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!(src->privateData = qemuDomainStorageSourcePrivateNew()))
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return -1;
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@@ -1975,6 +1979,9 @@ qemuStorageSourcePrivateDataParse(xmlXPathContextPtr ctxt,
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if (qemuStorageSourcePrivateDataAssignSecinfo(&priv->tlsKeySecret, &tlskeyalias) < 0)
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return -1;
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+
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+ if (fdsetPresent)
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+ priv->fdpass = qemuFDPassNewPassed(fdSetID);
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}
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if (virStorageSourcePrivateDataParseRelPath(ctxt, src) < 0)
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@@ -2008,6 +2015,7 @@ qemuStorageSourcePrivateDataFormat(virStorageSource *src,
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qemuDomainStorageSourcePrivate *srcPriv = QEMU_DOMAIN_STORAGE_SOURCE_PRIVATE(src);
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g_auto(virBuffer) nodenamesChildBuf = VIR_BUFFER_INIT_CHILD(buf);
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g_auto(virBuffer) objectsChildBuf = VIR_BUFFER_INIT_CHILD(buf);
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+ g_auto(virBuffer) fdsetsChildBuf = VIR_BUFFER_INIT_CHILD(buf);
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virBufferEscapeString(&nodenamesChildBuf, "<nodename type='storage' name='%s'/>\n", src->nodestorage);
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virBufferEscapeString(&nodenamesChildBuf, "<nodename type='format' name='%s'/>\n", src->nodeformat);
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@@ -2025,10 +2033,15 @@ qemuStorageSourcePrivateDataFormat(virStorageSource *src,
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return -1;
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if (srcPriv) {
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+ unsigned int fdSetID;
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+
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qemuStorageSourcePrivateDataFormatSecinfo(&objectsChildBuf, srcPriv->secinfo, "auth");
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qemuStorageSourcePrivateDataFormatSecinfo(&objectsChildBuf, srcPriv->encinfo, "encryption");
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qemuStorageSourcePrivateDataFormatSecinfo(&objectsChildBuf, srcPriv->httpcookie, "httpcookie");
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qemuStorageSourcePrivateDataFormatSecinfo(&objectsChildBuf, srcPriv->tlsKeySecret, "tlskey");
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+
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+ if (qemuFDPassIsPassed(srcPriv->fdpass, &fdSetID))
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+ virBufferAsprintf(&fdsetsChildBuf, "<fdset type='storage' id='%u'/>\n", fdSetID);
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}
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if (src->tlsAlias)
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@@ -2036,6 +2049,8 @@ qemuStorageSourcePrivateDataFormat(virStorageSource *src,
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virXMLFormatElement(buf, "objects", NULL, &objectsChildBuf);
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+ virXMLFormatElement(buf, "fdsets", NULL, &fdsetsChildBuf);
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+
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if (src->thresholdEventWithIndex)
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virBufferAddLit(buf, "<thresholdEvent indexUsed='yes'/>\n");
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diff --git a/tests/qemustatusxml2xmldata/modern-in.xml b/tests/qemustatusxml2xmldata/modern-in.xml
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index 7759034f7a..f5beab722b 100644
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--- a/tests/qemustatusxml2xmldata/modern-in.xml
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+++ b/tests/qemustatusxml2xmldata/modern-in.xml
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@@ -341,6 +341,9 @@
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<secret type='tlskey' alias='tls-certificate-key-alias'/>
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<TLSx509 alias='transport-alias'/>
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</objects>
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+ <fdsets>
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+ <fdset type='storage' id='1337'/>
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+ </fdsets>
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<thresholdEvent indexUsed='yes'/>
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</privateData>
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</source>
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--
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2.39.1
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