Hello community, here is the log from the commit of package libvirt for openSUSE:Factory checked in at 2020-08-23 09:20:42 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Comparing /work/SRC/openSUSE:Factory/libvirt (Old) and /work/SRC/openSUSE:Factory/.libvirt.new.3399 (New) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Package is "libvirt" Sun Aug 23 09:20:42 2020 rev:309 rq:828226 version:6.6.0 Changes: -------- --- /work/SRC/openSUSE:Factory/libvirt/libvirt.changes 2020-08-13 10:13:57.434633649 +0200 +++ /work/SRC/openSUSE:Factory/.libvirt.new.3399/libvirt.changes 2020-08-23 09:20:52.626675070 +0200 @@ -1,0 +2,16 @@ +Wed Aug 19 19:36:52 UTC 2020 - James Fehlig <jfeh...@suse.com> + +- virdevmapper: Handle kernel without device-mapper support + 82bb167f-dont-cache-devmapper-major.patch, + feb8564a-handle-no-devmapper.patch, + 53d9af1e-ignore-devmapper-open-errors.patch + boo#1175465 + +------------------------------------------------------------------- +Tue Aug 18 21:40:48 UTC 2020 - James Fehlig <jfeh...@suse.com> + +- util: Fix logic in virFileSetCOW + 2edd63a0-fix-virFileSetCOW-logic.patch + boo#1175463 + +------------------------------------------------------------------- New: ---- 2edd63a0-fix-virFileSetCOW-logic.patch 53d9af1e-ignore-devmapper-open-errors.patch 82bb167f-dont-cache-devmapper-major.patch feb8564a-handle-no-devmapper.patch ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Other differences: ------------------ ++++++ libvirt.spec ++++++ --- /var/tmp/diff_new_pack.zwCs6q/_old 2020-08-23 09:20:53.810675727 +0200 +++ /var/tmp/diff_new_pack.zwCs6q/_new 2020-08-23 09:20:53.814675729 +0200 @@ -336,6 +336,10 @@ Source99: baselibs.conf Source100: %{name}-rpmlintrc # Upstream patches +Patch0: 2edd63a0-fix-virFileSetCOW-logic.patch +Patch1: 82bb167f-dont-cache-devmapper-major.patch +Patch2: feb8564a-handle-no-devmapper.patch +Patch3: 53d9af1e-ignore-devmapper-open-errors.patch # Patches pending upstream review Patch100: libxl-dom-reset.patch Patch101: network-don-t-use-dhcp-authoritative-on-static-netwo.patch @@ -875,6 +879,10 @@ %prep %setup -q +%patch0 -p1 +%patch1 -p1 +%patch2 -p1 +%patch3 -p1 %patch100 -p1 %patch101 -p1 %patch150 -p1 ++++++ 2edd63a0-fix-virFileSetCOW-logic.patch ++++++ commit 2edd63a0dbd445112db23596ee0128521e8f1ff5 Author: Jiri Denemark <jdene...@redhat.com> Date: Wed Aug 5 10:01:45 2020 +0200 util: Fix logic in virFileSetCOW 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 <jdene...@redhat.com> Reviewed-by: Daniel P. Berrangé <berra...@redhat.com> Index: libvirt-6.6.0/src/util/virfile.c =================================================================== --- libvirt-6.6.0.orig/src/util/virfile.c +++ libvirt-6.6.0/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); ++++++ 53d9af1e-ignore-devmapper-open-errors.patch ++++++ commit 53d9af1e7924757e3b5f661131dd707d7110d094 Author: Michal Prívozník <mpriv...@redhat.com> Date: Wed Aug 19 13:35:55 2020 +0200 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.ehrha...@canonical.com> Reviewed-by: Christian Ehrhardt <christian.ehrha...@canonical.com> Signed-off-by: Michal Privoznik <mpriv...@redhat.com> Index: libvirt-6.6.0/src/util/virdevmapper.c =================================================================== --- libvirt-6.6.0.orig/src/util/virdevmapper.c +++ libvirt-6.6.0/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; } ++++++ 82bb167f-dont-cache-devmapper-major.patch ++++++ commit 82bb167f0d15b733b23931205be3488b83cb9ec6 Author: Michal Prívozník <mpriv...@redhat.com> Date: Tue Aug 18 11:08:15 2020 +0200 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 <mpriv...@redhat.com> Reviewed-by: Peter Krempa <pkre...@redhat.com> Reviewed-by: Christian Ehrhardt <christian.ehrha...@canonical.com> Tested-by: Christian Ehrhardt <christian.ehrha...@canonical.com> Index: libvirt-6.6.0/src/util/virdevmapper.c =================================================================== --- libvirt-6.6.0.orig/src/util/virdevmapper.c +++ libvirt-6.6.0/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; ++++++ feb8564a-handle-no-devmapper.patch ++++++ commit feb8564a3cc63bc8f68284063d53ec0d2d81a1cc Author: Michal Prívozník <mpriv...@redhat.com> Date: Tue Aug 18 11:04:24 2020 +0200 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 <abolo...@redhat.com> Reported-by: Christian Ehrhardt <christian.ehrha...@canonical.com> Signed-off-by: Michal Privoznik <mpriv...@redhat.com> Reviewed-by: Peter Krempa <pkre...@redhat.com> Reviewed-by: Christian Ehrhardt <christian.ehrha...@canonical.com> Tested-by: Christian Ehrhardt <christian.ehrha...@canonical.com> Index: libvirt-6.6.0/src/util/virdevmapper.c =================================================================== --- libvirt-6.6.0.orig/src/util/virdevmapper.c +++ libvirt-6.6.0/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); }