There is no point of having this option in libvirt because the debug
logs can be configured using log filters.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
EXTRA_DIST is not relevant because meson makes a git copy when creating
dist archive so everything tracked by git is part of dist tarball.
The remaining ones are not converted to meson files as they are
automatically tracked by meson.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
After the switch to libnl these are no longer used.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 77e7c13b2e
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
After dropping support for sanlock < 2.4,
this constant is no longer used.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: c495169478
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
When trying to parse an XML with overlapping iothread scheduler
settings, the error message was rather confusing:
error: iothreadssched attributes 'vcpus' must not overlap
Pass the correct element name.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Pass the scheduler element name instead of trying to reconstructing
it from the attribute name.
This has the benefit of not mixing '%s' with regular text in
translatable strings as well as preventing the confusion when
the 's' marking the plural in the element name ('vcpus') is taken
as a first letter of the 'sched' suffix.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Fixes: 7ea55a481d
Fixes: 99c5fe0e7c
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
virDomainThreadSchedParseHelper is used for parsing both iothread
and vcpu scheduling settings. Rename its 'name' attribute to
make it obvious this refers to the attribute name, not the name of
the element (which is currently constructed from the attribute name).
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
When doing an external snapshot we migrate memory to a file as a form of
taking the memory state. This creates a problem as qemu deactivates all
active bitmaps after a successful migration. This means that calling
'query-named-block-nodes' will return an empty list of bitmaps for
devices. We use the bitmap list to propagate the active bitmaps into the
overlay files being created which is required for backups to work after
a snapshot. Since we wouldn't propagate anything a subsequent backup
will fail with:
invalid argument: missing or broken bitmap 'testchck' for disk 'vda'
To fix this, we can simply collect the bitmap list prior to the
migration.
https://bugzilla.redhat.com/show_bug.cgi?id=1862472
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
virPCIDeviceAddressPtr 'addr' is forgotten to be freed in the branch
'VIR_APPEND_ELEMENT() < 0'. Use g_autoptr instead.
Signed-off-by: Hao Wang <wanghao232@huawei.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Use g_autoptr to free the temporary virDomainDef object created by
qemuDomainSaveInternal() when xmlin is non-NULL. Leak was added in
commit 0ea479f8f6, first appearing in libvirt 0.9.4 in August 2011.
Signed-off-by: Zheng Chuan <zhengchuan@huawei.com>
Reviewed-by: Laine Stump <laine@redhat.com>
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
The term number is used for other stats and even for hugetlb
stats in virsh man page. The term number is also more clear.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy@virtuozzo.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
CVE-2020-14339
When building domain's private /dev in a namespace, libdevmapper
is consulted for getting full dependency tree of domain's disks.
The reason is that for a multipath devices all dependent devices
must be created in the namespace and allowed in CGroups.
However, this approach is very fragile as building of namespace
happens in the forked off child process, after mass close of FDs
and just before dropping privileges and execing QEMU. And it so
happens that when calling libdevmapper APIs, one of them opens
/dev/mapper/control and saves the FD into a global variable. The
FD is kept open until the lib is unlinked or dm_lib_release() is
called explicitly. We are doing neither.
However, the virDevMapperGetTargets() function is called also
from libvirtd (when setting up CGroups) and thus has to be thread
safe. Unfortunately, libdevmapper APIs are not thread safe (nor
async signal safe) and thus we can't use them. Reimplement what
libdevmapper would do using plain C (ioctl()-s, /proc/devices
parsing, /dev/mapper dirwalking, and so on).
Fixes: a30078cb83
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1858260
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Since we have VIR_AUTOSTRINGLIST we can use it to free string
lists used in the function automatically.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
There are two distinct WITH_DEVMAPPER sections in the file, for
different functions each. Rearrange the code to make some of
future commits smaller.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
The storage pool code now attempts to disable COW by default on btrfs,
but management applications may wish to override this behaviour. Thus we
introduce a concept of storage pool features:
<features>
<cow state='yes|no'/>
</features>
If the <cow> feature policy is set, it will be enforced. It will always
return an hard error if COW cannot be explicitly set or unset.
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This calls virFileSetCOW when building a pool with a request to attempt,
but not require, COW to be disabled. The effect is that nothing changes
on non-btrfs filesystems, but btrfs will get COW disabled on the
directory. This setting is then inherited by all newly created files in
the pool, avoiding the need for mgmt app to set "nocow" on a per-volume
basis.
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When disabling COW on individual files, we now use the virFileSetCOW
method. Note that this change has a slight semantic difference to the
old implementation.
The original code reported errors but returned success when disabling
COW failed.
With this new code, we will always report an error if the user requested
disabling of COW and we could not honour it, either because btrfs
returned an error, or because the filesystem is not btrfs.
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
btrfs defaults to performing copy-on-write for files. This is often
undesirable for VM images, so we need to be able to control whether this
behaviour is used.
The virFileSetCOW() will allow for this. We use a tristate, since out of
the box, we want the default behaviour attempt to disable cow, but only
on btrfs, silently do nothing on non-btrfs. If someone explicitly asks
to disable/enable cow, then we want to raise a hard error on non-btrfs.
Reviewed-by: Neal Gompa <ngompa13@gmail.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This is only used in the ESX driver where, when set to "no", it will
ignore all the checks libvirt does about the origin of the MAC address
(whether or not it's in a VMWare OUI) and forward the original one to
the ESX server telling it not to check it either.
This allows keeping a deterministic MAC address which can be useful for
licensed software which might dislike changes.
Signed-off-by: Bastien Orivel <bastien.orivel@diateam.net>
VMX conversion parts rewritten to apply on top of previously merged
support for type='generated|static'
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
When support for MAC addresses having a type='static|generated'
attribute was added in:
commit 454e5961ab
Author: Bastien Orivel <bastien.orivel@diateam.net>
Date: Mon Jul 13 16:28:53 2020 +0200
Add a type attribute on the mac address element
the VMX -> XML parser was not updated. As a result while we
accept the 'type' attribute on input, we never show it again
on 'output', so we loose information during the roundtrip.
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
With the current formatter, the XML snippets:
<interface type='bridge'>
<mac address='00:0c:29:dd:ee:fe' type='static'/>
<source bridge='br1'/>
</interface>
<interface type='bridge'>
<mac address='aa:bb:cc:dd:ee:fd' type='generated'/>
<source bridge='br2'/>
</interface>
result in
ethernet1.present = "true"
ethernet1.networkName = "br1"
ethernet1.connectionType = "bridged"
ethernet1.addressType = "static"
ethernet1.address = "00:0c:29:dd:ee:fe"
ethernet1.checkMACAddress = "false"
ethernet2.present = "true"
ethernet2.networkName = "br2"
ethernet2.connectionType = "bridged"
ethernet2.addressType = "static"
ethernet2.address = "aa:bb:cc:dd:ee:fd"
ethernet2.checkMACAddress = "false"
which is flawed, as both type='static' and type='generated' in the XML
turn into 'static' in the VMX config.
The existence of the 'static' attribute is further overriding whether
the checkMACAddress config option is set as a side effect.
Both these pieces of flawed logic were introduced in
commit 454e5961ab
Author: Bastien Orivel <bastien.orivel@diateam.net>
Date: Mon Jul 13 16:28:53 2020 +0200
Add a type attribute on the mac address element
which intentionally added the 'checkMACAddress' side effect based on
the 'type' attribute.
With this change, we're reverting the handling of checkMACAddress
to match what existed historically. The 'type' attribute now directly
maps to the addressType attribute, so the above config becomes:
ethernet1.present = "true"
ethernet1.networkName = "br1"
ethernet1.connectionType = "bridged"
ethernet1.addressType = "static"
ethernet1.address = "00:0c:29:dd:ee:fe"
ethernet2.present = "true"
ethernet2.networkName = "br2"
ethernet2.connectionType = "bridged"
ethernet2.addressType = "generated"
ethernet2.generatedAddress = "aa:bb:cc:dd:ee:fd"
ethernet2.generatedAddressOffset = "0"
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
gcc 10.1.0 on Debian sid has a bug where the bounds checking gets
confused beteen two branches:
In file included from /usr/include/string.h:495,
from ../../src/internal.h:28,
from ../../src/util/virsocket.h:21,
from ../../src/util/virsocketaddr.h:21,
from ../../src/util/virnetdevip.h:21,
from ../../src/util/virnetdevip.c:21:
In function 'memcpy',
inlined from 'virNetDevGetifaddrsAddress' at ../../src/util/virnetdevip.c:914:13,
inlined from 'virNetDevIPAddrGet' at ../../src/util/virnetdevip.c:962:16:
/usr/include/arm-linux-gnueabihf/bits/string_fortified.h:34:10: error: '__builtin_memcpy' offset [16, 27] from the object at 'addr' is out of the bounds of referenced subobject 'inet4' with type 'struct sockaddr_in' at offset 0 [-Werror=array-bounds]
34 | return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../../src/util/virnetdevip.h:21,
from ../../src/util/virnetdevip.c:21:
../../src/util/virnetdevip.c: In function 'virNetDevIPAddrGet':
../../src/util/virsocketaddr.h:29:28: note: subobject 'inet4' declared here
29 | struct sockaddr_in inet4;
| ^~~~~
cc1: all warnings being treated as errors
Note the source location is pointing to the "inet6" / AF_INET6 branch of
the "if", but is complaining about bounds of the "inet4" field. Changing
the code into a switch() is sufficient to avoid triggering the bug and
is arguably better code too.
Reviewed-by: Laine Stump <laine@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
There are races condiction to make '/run/libvirt/qemu/dbus' directory in
virDirCreateNoFork() while concurrent start VMs, and get "failed to create
directory '/run/libvirt/qemu/dbus': File exists" error message. pre-create the
dbus directory in qemuStateInitialize.
Signed-off-by: Bihong Yu <yubihong@huawei.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Remove the superfuous break, as there is a 'return' before it.
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Remove superfluous breaks, as there is a "return" before them.
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Remove superfluous breaks, as there is a "return" before them.
Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn>
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Since active domains which do not have the attribute already set were
not started by libvirt that probed for CPU migratable property, we need
to check this property on reconnect and update the domain definition
accordingly.
https://bugzilla.redhat.com/show_bug.cgi?id=1857967
Reported-by: Mark Mielke <mark.mielke@gmail.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Commit v6.4.0-61-g201bd5db63 started to fill the default value for
//cpu/@migratable attribute according to QEMU support. However, active
domains either have the migratable attribute already set or the
capabilities we use for checking the QEMU support were created by older
libvirt which didn't probe for this specific capability. Thus we should
leave active domains alone when parsing their XMLs.
https://bugzilla.redhat.com/show_bug.cgi?id=1857967
Reported-by: Mark Mielke <mark.mielke@gmail.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Use g_auto* on pointers to avoid using the 'cleanup' label.
In theory the 'ret' variable can also be discarded if the flow
of the logic is reworked. Perhaps another time.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200717211556.1024748-5-danielhb413@gmail.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Use g_autoptr() on pointers and remove the unneeded 'cleanup' label.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200717211556.1024748-4-danielhb413@gmail.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Use g_autoptr() and remove the 'cleanup' label.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200717211556.1024748-3-danielhb413@gmail.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Next patches will use g_autoptr() in qemuProcessQMPPtr pointers
for some cleanups in QMP code.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200717211556.1024748-2-danielhb413@gmail.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Refactor networkSetIPv6Sysctls to remove repetition and reuse
of the 'field' variable.
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
Ignore errors from creating "libvirt-tmp-activewrite" bitmap. This
prevents failures of finishing blockjobs if the bitmap already exists.
Note that if the bitmap exists, the worst case that can happen is that
more bits are marked as dirty in the resulting merge.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
There are two possible 'transaction' command arguments in the function.
Rename 'actions' as they deal with creating bitmaps only.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The 'libvirt-tmp-activewrite' bitmap is added during the 'pivot'
operation of block copy and active layer block commit operations
regardless of whether there are any bitmaps to merge, but was not
removed unless a bitmap was merged. This meant that subsequent attempts
to merge into the same image would fail.
Fix it by checking whether the 'libvirt-tmp-activewrite' would be used
by the code and don't skip the code which would delete it.
This is a regression introduced when we switched to the new code for
block commit in <20a7abc2d2d> and for block copy in <7bfff40fdfe5>. The
actual bug originates from <4fa8654ece>.
https://bugzilla.redhat.com/show_bug.cgi?id=1857735
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Commit 20a7abc2d2 tried to delete the possibly leftover bitmap but
neglected to call the actual monitor to do so.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The handler finalizing the active layer block commit doesn't actually
reopen the file for active layer block commit, so the comment and check
are invalid.
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
The infrastructure supports setting the threshold also for the <mirror>.
Mention it in the docs.
https://bugzilla.redhat.com/show_bug.cgi?id=1807741
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
