libvirt-6.6.0-5

Fix noisy log error 'Failed to open file ...unique_id...' (bz #1692100)
Fix USB device error 'vendor cannot be 0' (bz #1897625)

0001-qemu-xen-add-missing-deps-on-virtlockd-virtlogd-sock.patch

@@ -1,66 +0,0 @@
-From 88c5b9f827779ae6fe5a6f08100a4b6184492a1c Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
-Date: Tue, 31 Aug 2021 10:59:39 +0100
-Subject: [PATCH] qemu, xen: add missing deps on virtlockd/virtlogd sockets
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-The QEMU driver uses both virtlogd and virtlockd, while the Xen driver
-uses virtlockd. The libvirtd.service unit contains deps on the socket
-units for these services, but these deps were missed in the modular
-daemons. As a result the virtlockd/virtlogd sockets are not started
-when the virtqemud/virtxend daemons are started.
-
-Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
-Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
----
- src/libxl/virtxend.service.in | 2 ++
- src/qemu/virtqemud.service.in | 4 ++++
- 2 files changed, 6 insertions(+)
-
-diff --git a/src/libxl/virtxend.service.in b/src/libxl/virtxend.service.in
-index a863917467..19b19ce3e6 100644
---- a/src/libxl/virtxend.service.in
-+++ b/src/libxl/virtxend.service.in
-@@ -1,6 +1,7 @@
- [Unit]
- Description=Virtualization xen daemon
- Conflicts=libvirtd.service
-+Requires=virtlockd.socket
- Requires=virtxend.socket
- Requires=virtxend-ro.socket
- Requires=virtxend-admin.socket
-@@ -25,6 +26,7 @@ KillMode=process
- 
- [Install]
- WantedBy=multi-user.target
-+Also=virtlockd.socket
- Also=virtxend.socket
- Also=virtxend-ro.socket
- Also=virtxend-admin.socket
-diff --git a/src/qemu/virtqemud.service.in b/src/qemu/virtqemud.service.in
-index 8abc9d3a7f..20e1b43a6e 100644
---- a/src/qemu/virtqemud.service.in
-+++ b/src/qemu/virtqemud.service.in
-@@ -1,6 +1,8 @@
- [Unit]
- Description=Virtualization qemu daemon
- Conflicts=libvirtd.service
-+Requires=virtlogd.socket
-+Requires=virtlockd.socket
- Requires=virtqemud.socket
- Requires=virtqemud-ro.socket
- Requires=virtqemud-admin.socket
-@@ -42,6 +44,8 @@ LimitMEMLOCK=64M
- 
- [Install]
- WantedBy=multi-user.target
-+Also=virtlogd.socket
-+Also=virtlockd.socket
- Also=virtqemud.socket
- Also=virtqemud-ro.socket
- Also=virtqemud-admin.socket
--- 
-2.31.1
-

0001-util-Fix-logic-in-virFileSetCOW.patch

@@ -0,0 +1,34 @@
+From: Jiri Denemark <jdenemar@redhat.com>
+Date: Wed, 5 Aug 2020 10:01:45 +0200
+Subject: [PATCH] util: Fix logic in virFileSetCOW
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+When COW is not explicitly requested to be disabled or enabled, the
+function is supposed to do nothing on non-BTRFS file systems.
+
+Fixes commit 7230bc95aa78379c9ee20cf59394c5fc4305b75b.
+
+https://bugzilla.redhat.com/show_bug.cgi?id=1866157
+
+Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
+Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
+(cherry picked from commit 2edd63a0dbd445112db23596ee0128521e8f1ff5)
+---
+ src/util/virfile.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/util/virfile.c b/src/util/virfile.c
+index af150421e7..a06e7dfcce 100644
+--- a/src/util/virfile.c
++++ b/src/util/virfile.c
+@@ -4550,7 +4550,7 @@ virFileSetCOW(const char *path,
+     }
+ 
+     if (buf.f_type != BTRFS_SUPER_MAGIC) {
+-        if (state == VIR_TRISTATE_BOOL_ABSENT) {
++        if (state != VIR_TRISTATE_BOOL_ABSENT) {
+             virReportSystemError(ENOSYS,
+                                  _("unable to control COW flag on '%s', not btrfs"),
+                                  path);

0002-virdevmapper-Don-t-cache-device-mapper-major.patch

@@ -0,0 +1,88 @@
+From: Michal Privoznik <mprivozn@redhat.com>
+Date: Tue, 18 Aug 2020 11:08:15 +0200
+Subject: [PATCH] virdevmapper: Don't cache device-mapper major
+
+The device mapper major is needed in virIsDevMapperDevice() which
+determines whether given device is managed by device-mapper. This
+number is obtained by parsing /proc/devices and then stored in a
+global variable so that the file doesn't have to be parsed again.
+However, as it turns out this logic is flawed - the major number
+is not static and can change as it can be specified as a
+parameter when loading the dm-mod module.
+
+Unfortunately, I was not able to come up with a good solution and
+thus the /proc/devices file is being parsed every time we need
+the device mapper major.
+
+Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
+Reviewed-by: Peter Krempa <pkrempa@redhat.com>
+Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+Tested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+(cherry picked from commit 82bb167f0d15b733b23931205be3488b83cb9ec6)
+---
+ src/util/virdevmapper.c | 17 +++++------------
+ 1 file changed, 5 insertions(+), 12 deletions(-)
+
+diff --git a/src/util/virdevmapper.c b/src/util/virdevmapper.c
+index a471504176..b43dbefa9a 100644
+--- a/src/util/virdevmapper.c
++++ b/src/util/virdevmapper.c
+@@ -46,11 +46,9 @@
+ 
+ G_STATIC_ASSERT(BUF_SIZE > sizeof(struct dm_ioctl));
+ 
+-static unsigned int virDMMajor;
+-
+ 
+ static int
+-virDevMapperOnceInit(void)
++virDevMapperGetMajor(unsigned int *major)
+ {
+     g_autofree char *buf = NULL;
+     VIR_AUTOSTRINGLIST lines = NULL;
+@@ -69,7 +67,7 @@ virDevMapperOnceInit(void)
+ 
+         if (sscanf(lines[i], "%u %ms\n", &maj, &dev) == 2 &&
+             STREQ(dev, DM_NAME)) {
+-            virDMMajor = maj;
++            *major = maj;
+             break;
+         }
+     }
+@@ -85,9 +83,6 @@ virDevMapperOnceInit(void)
+ }
+ 
+ 
+-VIR_ONCE_GLOBAL_INIT(virDevMapper);
+-
+-
+ static void *
+ virDMIoctl(int controlFD, int cmd, struct dm_ioctl *dm, char **buf)
+ {
+@@ -305,9 +300,6 @@ virDevMapperGetTargets(const char *path,
+      * consist of devices or yet another targets. If that's the
+      * case, we have to stop recursion somewhere. */
+ 
+-    if (virDevMapperInitialize() < 0)
+-        return -1;
+-
+     if ((controlFD = virDMOpen()) < 0)
+         return -1;
+ 
+@@ -319,13 +311,14 @@ bool
+ virIsDevMapperDevice(const char *dev_name)
+ {
+     struct stat buf;
++    unsigned int major;
+ 
+-    if (virDevMapperInitialize() < 0)
++    if (virDevMapperGetMajor(&major) < 0)
+         return false;
+ 
+     if (!stat(dev_name, &buf) &&
+         S_ISBLK(buf.st_mode) &&
+-        major(buf.st_rdev) == virDMMajor)
++        major(buf.st_rdev) == major)
+         return true;
+ 
+     return false;

0002-wireshark-Switch-to-tvb_bytes_to_str.patch

@@ -1,81 +0,0 @@
-From 7e299ba649b1288d529c7595c0e6060c9ae0ff2a Mon Sep 17 00:00:00 2001
-From: Michal Privoznik <mprivozn@redhat.com>
-Date: Mon, 29 Nov 2021 09:57:49 +0100
-Subject: [PATCH 1/2] wireshark: Switch to tvb_bytes_to_str()
-
-When the dissector sees a byte sequence that is either an opaque
-data (xdr_opaque) or a byte sequence (xdr_bytes) it formats the
-bytes as a hex numbers using our own implementation. But
-wireshark already provides a function for it: tvb_bytes_to_str().
-NB, the reason why it returns a const string is so that callers
-don't try to free it - the string is allocated using an allocator
-which will decide when to free it.
-
-The wireshark formatter was introduced in wireshark commit of
-v1.99.2~479 and thus is present in the version we require at
-least (2.6.0).
-
-Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
-Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
----
- tools/wireshark/src/packet-libvirt.c | 30 ++++++++--------------------
- 1 file changed, 8 insertions(+), 22 deletions(-)
-
-diff --git a/tools/wireshark/src/packet-libvirt.c b/tools/wireshark/src/packet-libvirt.c
-index f43919b05d..cb922b8070 100644
---- a/tools/wireshark/src/packet-libvirt.c
-+++ b/tools/wireshark/src/packet-libvirt.c
-@@ -158,24 +158,6 @@ dissect_xdr_string(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf,
-     }
- }
- 
--static const gchar *
--format_xdr_bytes(guint8 *bytes, guint32 length)
--{
--    gchar *buf;
--    guint32 i;
--
--    if (length == 0)
--        return "";
--    buf = wmem_alloc(wmem_packet_scope(), length*2 + 1);
--    for (i = 0; i < length; i++) {
--        /* We know that buf has enough size to contain
--           2 * length + '\0' characters. */
--        g_snprintf(buf, 2*(length - i) + 1, "%02x", bytes[i]);
--        buf += 2;
--    }
--    return buf - length*2;
--}
--
- static gboolean
- dissect_xdr_opaque(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf,
-                    guint32 size)
-@@ -187,8 +169,10 @@ dissect_xdr_opaque(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf,
-     val = g_malloc(size);
-     start = xdr_getpos(xdrs);
-     if ((rc = xdr_opaque(xdrs, (caddr_t)val, size))) {
--        proto_tree_add_bytes_format_value(tree, hf, tvb, start, xdr_getpos(xdrs) - start,
--                                          NULL, "%s", format_xdr_bytes(val, size));
-+        gint len = xdr_getpos(xdrs) - start;
-+        const char *s = tvb_bytes_to_str(wmem_packet_scope(), tvb, start, len);
-+
-+        proto_tree_add_bytes_format_value(tree, hf, tvb, start, len, NULL, "%s", s);
-     } else {
-         proto_tree_add_item(tree, hf_libvirt_unknown, tvb, start, -1, ENC_NA);
-     }
-@@ -207,8 +191,10 @@ dissect_xdr_bytes(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf,
- 
-     start = xdr_getpos(xdrs);
-     if (xdr_bytes(xdrs, (char **)&val, &length, maxlen)) {
--        proto_tree_add_bytes_format_value(tree, hf, tvb, start, xdr_getpos(xdrs) - start,
--                                          NULL, "%s", format_xdr_bytes(val, length));
-+        gint len = xdr_getpos(xdrs) - start;
-+        const char *s = tvb_bytes_to_str(wmem_packet_scope(), tvb, start, len);
-+
-+        proto_tree_add_bytes_format_value(tree, hf, tvb, start, len, NULL, "%s", s);
-         /* Seems I can't call xdr_free() for this case.
-            It will raises SEGV by referencing out of bounds call stack */
-         free(val);
--- 
-2.33.1
-

0003-virdevmapper-Handle-kernel-without-device-mapper-sup.patch

@@ -0,0 +1,76 @@
+From: Michal Privoznik <mprivozn@redhat.com>
+Date: Tue, 18 Aug 2020 11:04:24 +0200
+Subject: [PATCH] virdevmapper: Handle kernel without device-mapper support
+
+In one of my latest patch (v6.6.0~30) I was trying to remove
+libdevmapper use in favor of our own implementation. However, the
+code did not take into account that device mapper can be not
+compiled into the kernel (e.g. be a separate module that's not
+loaded) in which case /proc/devices won't have the device-mapper
+major number and thus virDevMapperGetTargets() and/or
+virIsDevMapperDevice() fails.
+
+However, such failure is safe to ignore, because if device mapper
+is missing then there can't be any multipath devices and thus we
+don't need to allow the deps in CGroups, nor create them in the
+domain private namespace, etc.
+
+Fixes: 22494556542c676d1b9e7f1c1f2ea13ac17e1e3e
+Reported-by: Andrea Bolognani <abologna@redhat.com>
+Reported-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
+Reviewed-by: Peter Krempa <pkrempa@redhat.com>
+Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+Tested-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+(cherry picked from commit feb8564a3cc63bc8f68284063d53ec0d2d81a1cc)
+---
+ src/util/virdevmapper.c | 20 ++++++++++++++++++--
+ 1 file changed, 18 insertions(+), 2 deletions(-)
+
+diff --git a/src/util/virdevmapper.c b/src/util/virdevmapper.c
+index b43dbefa9a..a81e2edee4 100644
+--- a/src/util/virdevmapper.c
++++ b/src/util/virdevmapper.c
+@@ -54,6 +54,9 @@ virDevMapperGetMajor(unsigned int *major)
+     VIR_AUTOSTRINGLIST lines = NULL;
+     size_t i;
+ 
++    if (!virFileExists(CONTROL_PATH))
++        return -2;
++
+     if (virFileReadAll(PROC_DEVICES, BUF_SIZE, &buf) < 0)
+         return -1;
+ 
+@@ -126,8 +129,13 @@ virDMOpen(void)
+ 
+     memset(&dm, 0, sizeof(dm));
+ 
+-    if ((controlFD = open(CONTROL_PATH, O_RDWR)) < 0)
++    if ((controlFD = open(CONTROL_PATH, O_RDWR)) < 0) {
++        if (errno == ENOENT)
++            return -2;
++
++        virReportSystemError(errno, _("Unable to open %s"), CONTROL_PATH);
+         return -1;
++    }
+ 
+     if (!virDMIoctl(controlFD, DM_VERSION, &dm, &tmp)) {
+         virReportSystemError(errno, "%s",
+@@ -300,8 +308,16 @@ virDevMapperGetTargets(const char *path,
+      * consist of devices or yet another targets. If that's the
+      * case, we have to stop recursion somewhere. */
+ 
+-    if ((controlFD = virDMOpen()) < 0)
++    if ((controlFD = virDMOpen()) < 0) {
++        if (controlFD == -2) {
++            /* The CONTROL_PATH doesn't exist. Probably the
++             * module isn't loaded, yet. Don't error out, just
++             * exit. */
++            return 0;
++        }
++
+         return -1;
++    }
+ 
+     return virDevMapperGetTargetsImpl(controlFD, path, devPaths, ttl);
+ }

0003-wireshark-Drop-needless-comment-in-dissect_xdr_bytes.patch

@@ -1,33 +0,0 @@
-From 010613cfd8dae6d85602a84c5c95b2d441e1b3d1 Mon Sep 17 00:00:00 2001
-From: Michal Privoznik <mprivozn@redhat.com>
-Date: Mon, 29 Nov 2021 10:20:05 +0100
-Subject: [PATCH 2/2] wireshark: Drop needless comment in dissect_xdr_bytes()
-
-In the dissect_xdr_bytes() there's a comment that the string
-allocated by xdr_bytes() can't be freed using xdr_free(). Well,
-that is expected because xdr_bytes() used plain calloc() AND the
-string is not an XDR struct but plain 'char *' type. Passing it
-to xdr_free() must result in weird things happening.
-
-Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
-Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
----
- tools/wireshark/src/packet-libvirt.c | 2 --
- 1 file changed, 2 deletions(-)
-
-diff --git a/tools/wireshark/src/packet-libvirt.c b/tools/wireshark/src/packet-libvirt.c
-index cb922b8070..eeacbcdf0e 100644
---- a/tools/wireshark/src/packet-libvirt.c
-+++ b/tools/wireshark/src/packet-libvirt.c
-@@ -195,8 +195,6 @@ dissect_xdr_bytes(tvbuff_t *tvb, proto_tree *tree, XDR *xdrs, int hf,
-         const char *s = tvb_bytes_to_str(wmem_packet_scope(), tvb, start, len);
- 
-         proto_tree_add_bytes_format_value(tree, hf, tvb, start, len, NULL, "%s", s);
--        /* Seems I can't call xdr_free() for this case.
--           It will raises SEGV by referencing out of bounds call stack */
-         free(val);
-         return TRUE;
-     } else {
--- 
-2.33.1
-

0004-tests-virstoragetest-remove-tests-without-backing-ty.patch

@@ -1,78 +0,0 @@
-From 979d1ba3ae1332bda80cb6eca98e41dc4462a226 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
-Date: Tue, 31 Aug 2021 11:41:55 +0200
-Subject: [PATCH] tests: virstoragetest: remove tests without backing type
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-As of qemu commit:
-
-  commit 497a30dbb065937d67f6c43af6dd78492e1d6f6d
-    qemu-img: Require -F with -b backing image
-
-creating images with backing images requires specifying the format.
-
-Remove tests which do not pass the backing format on the command
-line.
-
-Signed-off-by: Ján Tomko <jtomko@redhat.com>
-Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
----
- tests/virstoragetest.c | 33 ---------------------------------
- 1 file changed, 33 deletions(-)
-
-diff --git a/tests/virstoragetest.c b/tests/virstoragetest.c
-index 1b211b60e6..b80818bc7b 100644
---- a/tests/virstoragetest.c
-+++ b/tests/virstoragetest.c
-@@ -638,30 +638,6 @@ mymain(void)
-     };
-     TEST_CHAIN(abswrap, VIR_STORAGE_FILE_QCOW2, (&wrap, &qcow2, &raw), EXP_PASS);
- 
--    /* Rewrite qcow2 and wrap file to omit backing file type */
--    virCommandFree(cmd);
--    cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
--                               "-b", absraw, "qcow2", NULL);
--    if (virCommandRun(cmd, NULL) < 0)
--        ret = -1;
--
--    virCommandFree(cmd);
--    cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
--                               "-b", absqcow2, "wrap", NULL);
--    if (virCommandRun(cmd, NULL) < 0)
--        ret = -1;
--
--    /* Qcow2 file with raw as absolute backing, backing format omitted */
--    testFileData wrap_as_raw = {
--        .expBackingStoreRaw = absqcow2,
--        .expCapacity = 1024,
--        .path = abswrap,
--        .type = VIR_STORAGE_TYPE_FILE,
--        .format = VIR_STORAGE_FILE_QCOW2,
--    };
--    TEST_CHAIN(abswrap, VIR_STORAGE_FILE_QCOW2,
--               (&wrap_as_raw, &qcow2_as_raw), EXP_FAIL);
--
-     /* Rewrite qcow2 to a missing backing file, with backing type */
-     virCommandFree(cmd);
-     cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
-@@ -674,15 +650,6 @@ mymain(void)
-     /* Qcow2 file with missing backing file but specified type */
-     TEST_CHAIN(absqcow2, VIR_STORAGE_FILE_QCOW2, (&qcow2), EXP_FAIL);
- 
--    /* Rewrite qcow2 to a missing backing file, without backing type */
--    virCommandFree(cmd);
--    cmd = virCommandNewArgList(qemuimg, "rebase", "-u", "-f", "qcow2",
--                               "-b", datadir "/bogus", "qcow2", NULL);
--    if (virCommandRun(cmd, NULL) < 0)
--        ret = -1;
--
--    /* Qcow2 file with missing backing file and no specified type */
--    TEST_CHAIN(absqcow2, VIR_STORAGE_FILE_QCOW2, (&qcow2), EXP_FAIL);
- 
-     /* Rewrite qcow2 to use an nbd: protocol as backend */
-     virCommandFree(cmd);
--- 
-2.33.1
-

0004-virdevmapper-Ignore-all-errors-when-opening-dev-mapp.patch

@@ -0,0 +1,77 @@
+From: Michal Privoznik <mprivozn@redhat.com>
+Date: Wed, 19 Aug 2020 13:35:55 +0200
+Subject: [PATCH] virdevmapper: Ignore all errors when opening
+ /dev/mapper/control
+
+So far, only ENOENT is ignored (to deal with kernels without
+devmapper). However, as reported on the list, under certain
+scenarios a different error can occur. For instance, when libvirt
+is running inside a container which doesn't have permissions to
+talk to the devmapper. If this is the case, then open() returns
+-1 and sets errno=EPERM.
+
+Assuming that multipath devices are fairly narrow use case and
+using them in a restricted container is even more narrow the best
+fix seems to be to ignore all open errors BUT produce a warning
+on failure. To avoid flooding logs with warnings on kernels
+without devmapper the level is reduced to a plain debug message.
+
+Reported-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+Reviewed-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
+Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
+(cherry picked from commit 53d9af1e7924757e3b5f661131dd707d7110d094)
+---
+ src/util/virdevmapper.c | 23 +++++++++++++++--------
+ 1 file changed, 15 insertions(+), 8 deletions(-)
+
+diff --git a/src/util/virdevmapper.c b/src/util/virdevmapper.c
+index a81e2edee4..ee2fab5ae3 100644
+--- a/src/util/virdevmapper.c
++++ b/src/util/virdevmapper.c
+@@ -35,9 +35,12 @@
+ # include "viralloc.h"
+ # include "virstring.h"
+ # include "virfile.h"
++# include "virlog.h"
+ 
+ # define VIR_FROM_THIS VIR_FROM_STORAGE
+ 
++VIR_LOG_INIT("util.virdevmapper");
++
+ # define PROC_DEVICES "/proc/devices"
+ # define DM_NAME "device-mapper"
+ # define DEV_DM_DIR "/dev/" DM_DIR
+@@ -130,11 +133,15 @@ virDMOpen(void)
+     memset(&dm, 0, sizeof(dm));
+ 
+     if ((controlFD = open(CONTROL_PATH, O_RDWR)) < 0) {
+-        if (errno == ENOENT)
+-            return -2;
+-
+-        virReportSystemError(errno, _("Unable to open %s"), CONTROL_PATH);
+-        return -1;
++        /* We can't talk to devmapper. Produce a warning and let
++         * the caller decide what to do next. */
++        if (errno == ENOENT) {
++            VIR_DEBUG("device mapper not available");
++        } else {
++            VIR_WARN("unable to open %s: %s",
++                     CONTROL_PATH, g_strerror(errno));
++        }
++        return -2;
+     }
+ 
+     if (!virDMIoctl(controlFD, DM_VERSION, &dm, &tmp)) {
+@@ -310,9 +317,9 @@ virDevMapperGetTargets(const char *path,
+ 
+     if ((controlFD = virDMOpen()) < 0) {
+         if (controlFD == -2) {
+-            /* The CONTROL_PATH doesn't exist. Probably the
+-             * module isn't loaded, yet. Don't error out, just
+-             * exit. */
++            /* The CONTROL_PATH doesn't exist or is unusable.
++             * Probably the module isn't loaded, yet. Don't error
++             * out, just exit. */
+             return 0;
+         }
+ 

0005-util-use-g_autofree-in-virSCSIHostGetUniqueId.patch

@@ -0,0 +1,57 @@
+From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
+Date: Wed, 4 Nov 2020 12:08:19 +0100
+Subject: [PATCH] util: use g_autofree in virSCSIHostGetUniqueId
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Ján Tomko <jtomko@redhat.com>
+Reviewed-by: Erik Skultety <eskultet@redhat.com>
+(cherry picked from commit 843b70995471c1a20822ee62ff084310066b4b4a)
+---
+ src/util/virscsihost.c | 16 +++++-----------
+ 1 file changed, 5 insertions(+), 11 deletions(-)
+
+diff --git a/src/util/virscsihost.c b/src/util/virscsihost.c
+index 7d8e5299b8..4e6d8f7ad6 100644
+--- a/src/util/virscsihost.c
++++ b/src/util/virscsihost.c
+@@ -46,17 +46,16 @@ int
+ virSCSIHostGetUniqueId(const char *sysfs_prefix,
+                        int host)
+ {
+-    char *sysfs_path = NULL;
++    g_autofree char *sysfs_path = NULL;
+     char *p = NULL;
+-    int ret = -1;
+-    char *buf = NULL;
++    g_autofree char *buf = NULL;
+     int unique_id;
+ 
+     sysfs_path = g_strdup_printf("%s/host%d/unique_id",
+                                  sysfs_prefix ? sysfs_prefix : SYSFS_SCSI_HOST_PATH, host);
+ 
+     if (virFileReadAll(sysfs_path, 1024, &buf) < 0)
+-        goto cleanup;
++        return -1;
+ 
+     if ((p = strchr(buf, '\n')))
+         *p = '\0';
+@@ -65,15 +64,10 @@ virSCSIHostGetUniqueId(const char *sysfs_prefix,
+         virReportError(VIR_ERR_INTERNAL_ERROR,
+                        _("unable to parse unique_id: %s"), buf);
+ 
+-        goto cleanup;
++        return -1;
+     }
+ 
+-    ret = unique_id;
+-
+- cleanup:
+-    VIR_FREE(sysfs_path);
+-    VIR_FREE(buf);
+-    return ret;
++    return unique_id;
+ }
+ 
+ 

0006-util-quieten-virSCSIHostGetUniqueId.patch

@@ -0,0 +1,56 @@
+From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
+Date: Wed, 4 Nov 2020 12:29:07 +0100
+Subject: [PATCH] util: quieten virSCSIHostGetUniqueId
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The only caller of this function ignores failure
+and just sets the unique_id to -1.
+
+Failing to read the file is likely to the device no longer
+being present, not a real error.
+
+Stop reporting errors in this function.
+
+https://bugzilla.redhat.com/show_bug.cgi?id=1692100
+
+Signed-off-by: Ján Tomko <jtomko@redhat.com>
+Reviewed-by: Erik Skultety <eskultet@redhat.com>
+(cherry picked from commit 4a56278e770c972dbee7be5842b557de152a586e)
+---
+ src/util/virscsihost.c | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/src/util/virscsihost.c b/src/util/virscsihost.c
+index 4e6d8f7ad6..b1d51b40d3 100644
+--- a/src/util/virscsihost.c
++++ b/src/util/virscsihost.c
+@@ -41,6 +41,8 @@ VIR_LOG_INIT("util.scsi_host");
+  * Read the value of the "scsi_host" unique_id file.
+  *
+  * Returns the value on success or -1 on failure.
++ *
++ * No errors are reported.
+  */
+ int
+ virSCSIHostGetUniqueId(const char *sysfs_prefix,
+@@ -54,16 +56,14 @@ virSCSIHostGetUniqueId(const char *sysfs_prefix,
+     sysfs_path = g_strdup_printf("%s/host%d/unique_id",
+                                  sysfs_prefix ? sysfs_prefix : SYSFS_SCSI_HOST_PATH, host);
+ 
+-    if (virFileReadAll(sysfs_path, 1024, &buf) < 0)
++    if (virFileReadAllQuiet(sysfs_path, 1024, &buf) < 0)
+         return -1;
+ 
+     if ((p = strchr(buf, '\n')))
+         *p = '\0';
+ 
+     if (virStrToLong_i(buf, NULL, 10, &unique_id) < 0) {
+-        virReportError(VIR_ERR_INTERNAL_ERROR,
+-                       _("unable to parse unique_id: %s"), buf);
+-
++        VIR_DEBUG("unable to parse unique_id: '%s'", buf);
+         return -1;
+     }
+ 

0007-node_device-Use-udev-monitor-source.patch

@@ -0,0 +1,46 @@
+From: Michal Privoznik <mprivozn@redhat.com>
+Date: Tue, 17 Nov 2020 12:56:39 +0100
+Subject: [PATCH] node_device: Use "udev" monitor source
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+In v6.3.0-rc1~67 I've made a switch: instead of listening on udev
+events the nodedev driver started listening for kernel events.
+This was because when a device changes its name (e.g. NICs) we
+will get "move" event with DEVPATH_OLD property set, which we can
+then use to remove the old device and thus keep our internal list
+up to date. The switch to "kernel" source was made because if the
+old NICs naming (eth0, eth1, ...) is enabled (e.g. via
+net.ifnames=0 on the kernel cmd line) then udev overwrites the
+property with the new name making our internal list go out of
+sync. Interestingly, when the od NICs naming is not enabled then
+the DEVPATH_OLD contains the correct value.
+
+But as it turns out, "kernel" source might be missing some other
+important properties, e.g. USB vendor/product IDs. Therefore,
+switch back to "udev" source and wish the best of luck to users
+using the old NICs naming.
+
+Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1897625
+Fixes: 9a13704818e4a018723e0ec5b9e97b176f1c8584
+Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
+Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
+(cherry picked from commit 7e67a136dab9034dd3cb2ed76fa90c524c800cde)
+---
+ src/node_device/node_device_udev.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
+index ff558efb83..b7fbd42fa1 100644
+--- a/src/node_device/node_device_udev.c
++++ b/src/node_device/node_device_udev.c
+@@ -1878,7 +1878,7 @@ nodeStateInitialize(bool privileged,
+ 
+     virObjectLock(priv);
+ 
+-    priv->udev_monitor = udev_monitor_new_from_netlink(udev, "kernel");
++    priv->udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
+     if (!priv->udev_monitor) {
+         virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                        _("udev_monitor_new_from_netlink returned NULL"));

sources

@@ -1 +1 @@
-SHA512 (libvirt-7.6.0.tar.xz) = bad6cc02af071ca909bbbe3c07165e91cad863c9a759b26d9cff6aed6ea5643bc723d2f3c61ad41436dffd4fd50389333d74b131e37eaa54a5071a3ae26df627
+SHA512 (libvirt-6.6.0.tar.xz) = 55091addcf43d3c0bdd50f9378b588351181d191272d5a19220a0babe0893c1f6e0f1e41a7f51b8c1fb8e2098236b273e1a18b81573f4008ee3cf65374ba9465