import libvirt-6.0.0-28.module+el8.3.0+7827+5e65edd7
This commit is contained in:
CentOS Sources
parent
1b746786dc
commit
5545c7fc60
@ -0,0 +1,99 @@
|
||||
From bc406e0919e72b1f108ded76a380212b179c8572 Mon Sep 17 00:00:00 2001
|
||||
Message-Id: <bc406e0919e72b1f108ded76a380212b179c8572@dist-git>
|
||||
From: Michal Privoznik <mprivozn@redhat.com>
|
||||
Date: Tue, 25 Aug 2020 17:16:05 +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)
|
||||
|
||||
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1860421
|
||||
|
||||
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
|
||||
Message-Id: <64b6d6124918bc8cfe220464752eac93cd6d6734.1598364552.git.mprivozn@redhat.com>
|
||||
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
|
||||
---
|
||||
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;
|
||||
--
|
||||
2.28.0
|
||||
|
||||
@ -0,0 +1,87 @@
|
||||
From a9c950dcbac1f708bcd01111d4ec9b550db37fe3 Mon Sep 17 00:00:00 2001
|
||||
Message-Id: <a9c950dcbac1f708bcd01111d4ec9b550db37fe3@dist-git>
|
||||
From: Michal Privoznik <mprivozn@redhat.com>
|
||||
Date: Tue, 25 Aug 2020 17:16:06 +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)
|
||||
|
||||
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1860421
|
||||
|
||||
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
|
||||
Message-Id: <71fcd93071dffdf4942ccce8671af7fcbcec397f.1598364552.git.mprivozn@redhat.com>
|
||||
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
|
||||
---
|
||||
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);
|
||||
}
|
||||
--
|
||||
2.28.0
|
||||
|
||||
@ -0,0 +1,88 @@
|
||||
From b38ab86a0a2cf3453d37a5fe96b2e022d8a1d48a Mon Sep 17 00:00:00 2001
|
||||
Message-Id: <b38ab86a0a2cf3453d37a5fe96b2e022d8a1d48a@dist-git>
|
||||
From: Michal Privoznik <mprivozn@redhat.com>
|
||||
Date: Tue, 25 Aug 2020 17:16:07 +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)
|
||||
|
||||
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1860421
|
||||
|
||||
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
|
||||
Message-Id: <e1b69d69e7d242829995208c6d59ed0477208920.1598364552.git.mprivozn@redhat.com>
|
||||
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
|
||||
---
|
||||
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;
|
||||
}
|
||||
|
||||
--
|
||||
2.28.0
|
||||
|
||||
@ -219,7 +219,7 @@
|
||||
Summary: Library providing a simple virtualization API
|
||||
Name: libvirt
|
||||
Version: 6.0.0
|
||||
Release: 27%{?dist}%{?extra_release}
|
||||
Release: 28%{?dist}%{?extra_release}
|
||||
License: LGPLv2+
|
||||
URL: https://libvirt.org/
|
||||
|
||||
@ -666,6 +666,9 @@ Patch434: libvirt-virdevmapper.c-Join-two-WITH_DEVMAPPER-sections-together.patch
|
||||
Patch435: libvirt-virDevMapperGetTargetsImpl-Use-VIR_AUTOSTRINGLIST.patch
|
||||
Patch436: libvirt-virdevmapper-Don-t-use-libdevmapper-to-obtain-dependencies.patch
|
||||
Patch437: libvirt-virDevMapperGetTargets-Don-t-ignore-EBADF.patch
|
||||
Patch438: libvirt-virdevmapper-Don-t-cache-device-mapper-major.patch
|
||||
Patch439: libvirt-virdevmapper-Handle-kernel-without-device-mapper-support.patch
|
||||
Patch440: libvirt-virdevmapper-Ignore-all-errors-when-opening-dev-mapper-control.patch
|
||||
|
||||
Requires: libvirt-daemon = %{version}-%{release}
|
||||
Requires: libvirt-daemon-config-network = %{version}-%{release}
|
||||
@ -2442,6 +2445,11 @@ exit 0
|
||||
|
||||
|
||||
%changelog
|
||||
* Wed Aug 26 2020 Jiri Denemark <jdenemar@redhat.com> - 6.0.0-28
|
||||
- virdevmapper: Don't cache device-mapper major (rhbz#1860421)
|
||||
- virdevmapper: Handle kernel without device-mapper support (rhbz#1860421)
|
||||
- virdevmapper: Ignore all errors when opening /dev/mapper/control (rhbz#1860421)
|
||||
|
||||
* Fri Aug 7 2020 Jiri Denemark <jdenemar@redhat.com> - 6.0.0-27
|
||||
- src: assume sys/sysmacros.h always exists on Linux (rhbz#1860421)
|
||||
- virdevmapper.c: Join two WITH_DEVMAPPER sections together (rhbz#1860421)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user