This API is used to tell the other side of the stream to skip
some bytes in the stream. This can be used to create a sparse
file on the receiving side of a stream.
It takes @length argument, which says how big the hole is. This
skipping is done from the current point of stream. Since our
streams are not rewindable like regular files, we don't need
@whence argument like seek(2) has.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
There are three virStreamDriver's currently supported:
* virFDStream
* remote driver
* ESX driver
For now, backend virStreamRecvFlags support for only remote driver and
ESX driver is sufficient. Future patches will update virFDStream.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This patch is adding the virStreamRecvFlags as a variant to the
virStreamRecv function in order to allow for future expansion of
functionality for processing sparse streams using a @flags
argument.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This function takes a FD and determines whether the current
position is in data section or in a hole. In addition to that,
it also determines how much bytes are there remaining till the
current section ends.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
One big downside of using the pipe to transfer the data is that
we can really transfer just bare data. No metadata can be carried
through unless some formatted messages are introduced. That would
be quite painful to achieve so let's use a message queue. It's
fairly easy to exchange info between threads now that iohelper is
no longer used.
The reason why we cannot use the FD for plain files directly is
that despite us setting noblock flag on the FD, any
read()/write() blocks regardless (which is a show stopper since
those parts of the code are run from the event loop) and poll()
reports such FD as always readable/writable - even though the
subsequent operation might block.
The pipe is still not gone though. It is used to signal the event
loop that an event occurred (e.g. data is available for reading
in the queue, or vice versa).
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
virt-install and virt-manager both default to explicitly setting
"io='native'" in the disk "driver" tag. virsh, however, does not and also
does not provide an option to specify that setting at all. As a result,
disks use a different IO mechanism (the default, "threads") when attached
post-setup using virsh. Adding this option allows users to keep disk
performance consistent for disks attached at install, and those attached
afterward.
Since we allow active layer block commit the users are allowed to commit
the top of the chain (e.g. vda) into the backing image. The API would
not accept that parameter, as it tried to look up the image in the
backing chain.
Add the ability to use the top level image target name explicitly as the
top image of the block commit operation.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1451394
The QEMU default is GICv2, and some of the code in libvirt
relies on the exact value. Stop pretending that's not the
case and use GICv2 explicitly where needed.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
There are currently some limitations in the emulated GICv3
that make it unsuitable as a default. Use GICv2 instead.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1450433
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Currently we consider all UNIX paths with specific prefix as generated
by libvirt, but that's a wrong assumption. Let's make the detection
better by actually checking whether the whole path matches one of the
paths that we generate or generated in the past.
The UNIX path isn't stored in config XML since libvirt-1.3.1.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1446980
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The debian etch distro was end-of-life a long time ago so we no
longer need the ULLONG_MAX hack. In any case gnulib now provides
an equivalent fix by default, and so our definition now triggers
syntax-check rule failure
src/internal.h:# define ULLONG_MAX ULONG_LONG_MAX
maint.mk: define the above via some gnulib .h file
maint.mk:843: recipe for target 'sc_prohibit_always-defined_macros' failed
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Add kernel_irqchip=split/on to the QEMU command line
and a capability that looks for it in query-command-line-options
output. For the 'split' option, use a version check
since it cannot be reasonably probed.
https://bugzilla.redhat.com/show_bug.cgi?id=1427005
Add a new <ioapic> element with a driver attribute.
Possible values are qemu and kvm. With 'qemu', the I/O
APIC can be put in the userspace even for KVM domains.
https://bugzilla.redhat.com/show_bug.cgi?id=1427005
There should be no need to make dir based pools world/group readable.
So use 0711, not 0755, as the default perms for storage dirs.
Updates in v2:
- adapt commit wording to mention dropping group readable as well
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
The metadata libvirt cares about is identical for version 3
as for previous versions, so we merely need list the new
version number.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
If a shutdown is expected because it was triggered via libvirt we can
also expect the monitor to close. In those cases do not report an
internal error like:
"internal error: End of file from qemu monitor"
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>
I like to use it that way and every time I try running it I just
instinctively use '-i' (like with sed, etc.) and it makes sense, IMHO.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Simply tries to match the provided regex on a string and returns
the result. Useful if caller don't care about the matched substring
and want to just test if some pattern patches a string.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
The @type from virFileReadValueString needs to be VIR_FREE each time
through the loop since it's not saved and since cleanup can be reached
prior to decoding it for @kernel_type amd bank->type, the cleanup code
needs to also have a VIR_FREE
Found by Coverity
The regular spec file contains code to deal with the fact
that maintenance releases are uploaded to their own
directory: copy it over to the mingw spec file so that it's
possible to build maintenance releases there as well.
This also switches the source URL from FTP to HTTP for
consistency with the main spec file.
Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Adjust the current message to make it clear, that it is the hotplug
operation that is unsupported with the given host device type.
https://bugzilla.redhat.com/show_bug.cgi?id=1450072
Signed-off-by: Erik Skultety <eskultet@redhat.com>
The Win32 platform can not do link time overrides in the same way
that we can on POSIX / ELF based platforms, so we cannot build
the virfilewrapper.c code reliably. Just stub it out on Win32
so it is a no-op. Tests that use this file are already written
to skip on Win32.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
When running on a NUMA machine, populate the sibling node
and distance information using data supplied by Xen.
With locality distances information, under Xen, new host
capabilities would like:
<topology>
<cells num='4'>
<cell id='0'>
<memory unit='KiB'>263902380</memory>
<distances>
<sibling id='0' value='10'/>
<sibling id='1' value='21'/>
</distances>
...
</cell>
...
</cells>
...
</topology>
Signed-off-by: Wim ten Have <wim.ten.have@oracle.com>
Reviewed-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Jim Fehlig <jfehlig@suse.com>
The test programs depend on virfilewrapper.h as well as the
virfilewrapper.c. Adding the dep ensures that virfilewrapper.h
gets included in the dist tarball.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
GCC complains that inlining virStringTrimOptionalNewline is not
likely on some platforms:
cc1: warnings being treated as errors
../../src/util/virfile.c: In function 'virFileReadValueBitmap':
../../src/util/virstring.h:292: error: inlining failed in call to 'virStringTrimOptionalNewline': call is unlikely and code size would grow [-Winline]
../../src/util/virfile.c:3987: error: called from here [-Winline]
Inlining this function is not going to be a measurable performance
benefit either, since the time required to execute it is going to
be dominated by running of strlen() over the string, not by the
function call overhead.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
New maint release version numbers of just A.B.C format, not the old
A.B.C.D format. Adjust the check that dynamically changes the Source
URL for maint releases
Signed-off-by: Cole Robinson <crobinso@redhat.com>
Acked-by: Andrea Bolognani <abologna@redhat.com>
If __lxstat() and __xstat() functions are not available, build fails with:
CC virfilewrapper.o
virfilewrapper.c:180:5: error: no previous prototype for function '__lxstat' [-Werror,-Wmissing-prototypes]
int __lxstat(int ver, const char *path, struct stat *sb)
^
virfilewrapper.c:208:5: error: no previous prototype for function '__xstat' [-Werror,-Wmissing-prototypes]
int __xstat(int ver, const char *path, struct stat *sb)
Luckily, we already check presence of these functions in configure
using AC_CHECK_FUNCS, so just don't wrap these if they're not available.
Signed-off-by: Roman Bogorodskiy <bogorodskiy@gmail.com>
Add info from yet another machine, this time with resctrl data so that
we can extend tests easily in a test-driven way.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Added only in drivers that were already calling
virCapabilitiesInitNUMA(). Instead of refactoring all the callers to
behave the same way in case of error, just follow what the callers are
doing for all the functions.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
