Peter Krempa [Mon, 19 Jun 2017 12:37:47 +0000 (14:37 +0200)]
util: storage: Add support for type 'inet' in virStorageSourceParseBackingJSONSocketAddress
'SocketAddress' structure was changed to contain 'inet' instead of
'tcp' since qemu commit c5f1ae3ae7b. Existing entries have a backward
compatibility layer.
Libvirt will parse 'inet' and 'tcp' as equivalents.
It was added in commit 6c2e4c3856c8ed48c378bf1bf357cab46271a47a
so that Coverity would not complain about passing -1 to
qemuDomainDetachThisHostDevice(), but the function in question
has changed since and so the annotation doesn't apply anymore.
Signed-off-by: Andrea Bolognani <abologna@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Peter Krempa [Thu, 15 Jun 2017 15:23:15 +0000 (17:23 +0200)]
util: storage: make virStorageSourceParseBackingJSONGlusterHost universal
The same json strucutre is used for NBD and sheepdog volumes for
specifying of the host. Rename the function and fix up error messages to
be more universal.
When added in multiple previous commits, it was used only with -device
qxl(-vga), but for some QEMUs (< 1.6) we need to add this
functionality when using -vga qxl as well.
Pavel Hrdina [Thu, 15 Jun 2017 06:34:55 +0000 (08:34 +0200)]
qemu: introduce chardevStdioLogd to qemu private data
In QEMU driver we can use virtlogd as stdio handler for source backend
of char devices if current QEMU is new enough and it's enabled in
qemu.conf. We should store this information while starting a guest
because the config option may change while the guest is running.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: John Ferlan <jferlan@redhat.com>
Imagine a FS mounted on /dev/blah/blah2. Our process of creating
suffix for temporary location where all the mounted filesystems
are moved is very simplistic. We want:
/var/run/libvirt/qemu/$domName.$suffix\
were $suffix is just the mount point path stripped of the "/dev/"
prefix. For instance:
/var/run/libvirt/qemu/fedora.mqueue for /dev/mqueue
/var/run/libvirt/qemu/fedora.pts for /dev/pts
and so on. Now if we plug /dev/blah/blah2 into the example we see
some misbehaviour:
/var/run/libvirt/qemu/fedora.blah/blah2
Well, misbehaviour if /dev/blah/blah2 is a file, because in that
case we call virFileTouch() instead of virFileMakePath().
The solution is to replace all the slashes in the suffix with say
dots. That way we don't have to care about nested directories.
IOW, the result we want for given example is:
/var/run/libvirt/qemu/fedora.blah.blah2
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: John Ferlan <jferlan@redhat.com>
There can be nested mount points. For instance /dev/shm/blah can
be a mount point and /dev/shm too. It doesn't make much sense to
return the former path because callers preserve the latter (and
with that the former too). Therefore prune nested mount points.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: John Ferlan <jferlan@redhat.com>
After 290a00e41d we know how to deal with file mount points.
However, when cleaning up the temporary location for preserved
mount points we are still calling rmdir(). This won't fly for
files. We need to call unlink(). Now, since we don't really care
if the cleanup succeeded or not (it's the best effort anyway), we
can call both rmdir() and unlink() without need for
differentiation between files and directories.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: John Ferlan <jferlan@redhat.com>
On some platforms the number of bits in the cbm_mask might not be
divisible by 4 (and not even by 2), so we need to properly count the
bits. Similar file, min_cbm_bits, is properly parsed and used, but if
the number is greater than one, we lose the information about
granularity when reporting the data in capabilities. For that matter
always report granularity, but if it is not the same as the minimum,
add that information in there as well.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Serge Hallyn [Tue, 23 May 2017 16:22:48 +0000 (18:22 +0200)]
apparmor, libvirt-qemu: Allow access to certificates used by libvirt-vnc
When setting up VncTLS according to the official Libvirt documentation,
only one certificate for libvirt/libvirt-vnc is used. The document
indicates to use the following directories :
Simon McVittie [Tue, 23 May 2017 16:22:39 +0000 (18:22 +0200)]
virt-aa-helper, apparmor: allow /usr/share/OVMF/ too
The split firmware and variables files introduced by
https://bugs.debian.org/764918 are in a different directory for
some reason. Let the virtual machine read both.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
GCC 7.1 introduces a new -Wformat-truncation warning
flag that reports if it thinks the maximum possible
size of the formatted output will exceed the provided
fixed buffer. This is enabled automatically by the
-Wformat warning flag. There are quite a few places
hit by this in libvirt which need rewriting. This is
non-trivial work in some places, so temporarily
disable the new warning until those fixes can be
implemented.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Depending on the platform/architecture, a number of conditionals
in libvirt code expand the same on both branches. This is expected
behaviour and harmless, so disable the warning to avoid creating
unexpected build failures
Two examples, mingw32:
../../src/util/vircommand.c: In function 'virCommandWait':
../../src/util/vircommand.c:2562:51: error: this condition has identical branches [-Werror=duplicated-branches]
*exitstatus = cmd->rawStatus ? status : WEXITSTATUS(status);
^
and gcc7.1
In file included from util/virobject.c:28:0:
util/virobject.c: In function 'virClassNew':
util/viratomic.h:176:46: error: this condition has identical branches [-Werror=duplicated-branches]
(void)(0 ? *(atomic) ^ *(atomic) : 0); \
^
util/virobject.c:144:20: note: in expansion of macro 'virAtomicIntInc'
klass->magic = virAtomicIntInc(&magicCounter);
^~~~~~~~~~~~~~~
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Jiri Denemark [Wed, 14 Jun 2017 12:56:21 +0000 (14:56 +0200)]
qemu: Use qemuDomainCheckABIStability where needed
Most places which want to check ABI stability for an active domain need
to call this API rather than the original
qemuDomainDefCheckABIStability. The only exception is in snapshots where
we need to decide what to do depending on the saved image data.
Jiri Denemark [Wed, 14 Jun 2017 11:43:37 +0000 (13:43 +0200)]
qemu: Add qemuDomainCheckABIStability
When making ABI stability checks for an active domain, we need to make
sure we use the same migratable definition which virDomainGetXMLDesc
with the MIGRATABLE flag provides, otherwise the ABI check will fail.
This is implemented in the new qemuDomainCheckABIStability which takes a
domain object and generates the right migratable definition from it.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This patch separates the actual ABI checks from getting migratable defs
in qemuDomainDefCheckABIStability so that we can create another wrapper
which will use different methods to get the migratable defs.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
My fix 671d18594f4 was incomplete. If domain doesn't have
hugepages enabled, because of missing condition we would still be
putting hugepages path onto qemu cmd line. Clean up the
conditions so that it's more visible next time.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
With glibc >= 2.25.90 writev() is only available if you explicitly
include sys/uio.h. This matches the documented requirements, but
older glibc and other *NIX pulled in writev indirectly so the bug
wasn't noticed previously.
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Erik Skultety [Tue, 13 Jun 2017 15:55:36 +0000 (17:55 +0200)]
qemu: monitor: Fix a memory leak in qemuMonitorJSONAttachCharDevCommand
With the current logic, we only free @tlsalias as part of the error
label and would have to free it explicitly earlier in the code. Convert
the error label to cleanup, so that we have only one sink, where we
handle all frees. Since JSON object append operation consumes pointers,
make sure @backend is cleared before we hit the cleanup label.
Signed-off-by: Erik Skultety <eskultet@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Historically, we've always supported memAccess for domains backed
by hugepages. However, somewhere along the way we've regressed
and stopped allowing such configuration. Fix it.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
We have couple of hugepage enabled domains for qemuxml2argvtest.
Unfortunately, often when adding a test case there I forget to
add it to xml2xml test too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
It may happen that a domain is started without any huge pages.
However, user might try to attach a DIMM module later. DIMM
backed by huge pages (why would somebody want to mix regular and
huge pages is beyond me). Therefore we have to create the dir if
we haven't done so far.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: John Ferlan <jferlan@redhat.com>
Currently, the per-domain path for huge pages mmap() for qemu is
created iff domain has memoryBacking and hugepages in it
configured. However, this alone is not enough because there can
be a DIMM module with hugepages configured too.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: John Ferlan <jferlan@redhat.com>
Right now, there is a lot of exit points from the function.
Depending on their position they need to copy the same free
calls. This goes against our style where we usually have just one
exit point from the function which also does the necessary free.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Jiri Denemark [Tue, 13 Jun 2017 11:25:07 +0000 (13:25 +0200)]
qemu: Fix starting a domain with corrupted managed save file
Commit v3.4.0-44-gac793bd71 fixed a memory leak, but failed to return
the special -3 value. Thus an attempt to start a domain with corrupted
managed save file would removed the corrupted file and report
"An error occurred, but the cause is unknown" instead of starting the
domain from scratch.
Marc Hartmayer [Wed, 7 Jun 2017 08:46:41 +0000 (10:46 +0200)]
Use ATTRIBUTE_FALLTHROUGH
Use ATTRIBUTE_FALLTHROUGH, introduced by commit 5d84f5961b8e28e802f600bb2d2c6903e219092e, instead of comments to
indicate that the fall through is an intentional behavior.
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com> Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com> Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Marc Hartmayer [Wed, 7 Jun 2017 08:46:39 +0000 (10:46 +0200)]
rpc: first allocate the memory and then set the count
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com> Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com> Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Pavel Hrdina [Sat, 10 Jun 2017 09:38:57 +0000 (11:38 +0200)]
qemu: skip only ',' for VNC and Spice unix socket
Commit 824272cb28d attempted to fix escaping of characters in unix
socket path but it was wrong. We need to escape only ',', there is
no escape character for '='.
Signed-off-by: Pavel Hrdina <phrdina@redhat.com> Reviewed-by: Andrea Bolognani <abologna@redhat.com>
When building with clang 4.0.0, virsh build fails like this:
gmake[3]: Entering directory '/usr/home/novel/code/libvirt/tools'
CC virsh-virsh.o
In file included from virsh.c:45:
In file included from /usr/local/include/readline/readline.h:31:
/usr/local/include/readline/rltypedefs.h:35:22: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
typedef int Function () __attribute__ ((deprecated));
^
void
/usr/local/include/readline/rltypedefs.h:36:24: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
typedef void VFunction () __attribute__ ((deprecated));
^
void
/usr/local/include/readline/rltypedefs.h:37:26: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
typedef char *CPFunction () __attribute__ ((deprecated));
^
void
/usr/local/include/readline/rltypedefs.h:38:28: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
typedef char **CPPFunction () __attribute__ ((deprecated));
^
void
In file included from virsh.c:45:
/usr/local/include/readline/readline.h:385:23: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
extern int rl_message ();
^
void
5 errors generated.
gmake[3]: *** [Makefile:2823: virsh-virsh.o] Error 1
Fix that by adding -D_FUNCTION_DEF to READLINE_CFLAGS to fix *Function
related warnings and add a check for stdarg.h so we have HAVE_STDARG_H
defined that's needed by the readline headers to use proper rl_message
declaration.
Currently, any attempt to change MTU on an interface that is
plugged to a running domain is silently ignored. We should either
do what's asked or error out. Well, we can update the host side
of the interface, but we cannot change 'host_mtu' attribute for
the virtio-net device. Therefore we have to error out.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Laine Stump <laine@laine.org>
While implementing MTU (572eda12ad and friends), I've forgotten
to actually set MTU on the host NIC in case of hotplug. We
correctly tell qemu on the monitor what the MTU should be, but we
are not actually setting it on the host NIC.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Laine Stump <laine@laine.org>
We try to get the last element of the passed path by calling
strrch(path, '/'). However, the pointer that strrchr() returns
points at the slash, We want string that starts right after that.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Currently, we are querying for vhostuser interface name in post
parse callback. At that time interface might not yet exist.
However, it has to exist when starting domain. Therefore it makes
more sense to query its name at that point. This partially
reverts 57b5e27.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
virNetClientStreamQueuePacket: Set st->incomingEOF on the end of stream
While reworking client side of streams, I had to postpone payload
decoding so that stream holes and stream data can be
distinguished in virNetClientStreamRecvPacket. That's merely what 18944b7aea46d does. However, I accidentally removed one important
bit: when server sends us an empty STREAM packet (with no
payload) - meaning end of stream - st->incomingEOF flag needs to
be set. It used to be before I touched the code. After I removed
it, virNetClientStreamRecvPacket will try to fetch more data from
the stream, but it will never come.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Jim Fehlig <jfehlig@suse.com>
In 9cb891141c we've introduced some logic to clearing suggested
macvtap/macvlan ifnames. The logic consists of comparing ifname
string with strings that libvirt would generate. However, due to
a typo only VIR_NET_GENERATED_MACVTAP_PREFIX was compared. Twice.
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Laine Stump [Tue, 6 Jun 2017 16:07:49 +0000 (12:07 -0400)]
docs: correct improper information about domain states in virsh manpage
Commit 24d4a0a1f removed the non-existent "dying" state from the list
of possible domain states given in the virsh manpage, but didn't
correct the count of states from 8 down to 7. This patch fixes that
mismatch by completely removing any reference to the exact number of
states (thus preventing a potential future mismatch), while wording
the sentence in a more readable/truthful manner.
Erik Skultety [Mon, 29 May 2017 10:58:34 +0000 (12:58 +0200)]
qemu: Fix serial stub console allocation
When adding the aliased serial stub console, the structure wasn't
properly allocated (VIR_ALLOC instead of virDomainChrDefNew) which then
resulted in SIGSEGV in virDomainChrSourceIsEqual during a serial device
coldplug.
Jiri Denemark [Wed, 31 May 2017 10:34:10 +0000 (12:34 +0200)]
qemu: Use updated CPU when starting QEMU if possible
If QEMU is new enough and we have the live updated CPU definition in
either save or migration cookie, we can use it to enforce ABI. The
original guest CPU from domain XML will be stored in private data.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Jiri Denemark [Fri, 2 Jun 2017 20:52:03 +0000 (22:52 +0200)]
qemu: Store updated CPU in save cookie
Since the domain XML saved in a snapshot or saved image uses the
original guest CPU definition but we still want to enforce ABI when
restoring the domain if libvirt and QEMU are new enough, we save the
live updated CPU definition in a save cookie.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Jiri Denemark [Fri, 26 May 2017 15:06:56 +0000 (17:06 +0200)]
qemu: Send updated CPU in migration cookie
Since the domain XML send during migration uses the original guest CPU
definition but we still want the destination to enforce ABI if it is new
enough, we send the live updated CPU definition in a migration cookie.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Jiri Denemark [Wed, 7 Jun 2017 07:35:25 +0000 (09:35 +0200)]
qemu: Always send persistent XML during migration
When persistent migration of a transient domain is requested but no
custom XML is passed to the migration API we would just let the
destination daemon make a persistent definition from the live definition
itself. This is not a problem now, but once the destination daemon
starts replacing the original CPU definition with the one from migration
cookie before starting a domain, it would need to add more ugly hacks to
reverse the operation. Let's just always send the persistent definition
in the cookie to make things a bit cleaner.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Jiri Denemark [Fri, 19 May 2017 13:20:31 +0000 (15:20 +0200)]
qemu: Report the original CPU in migratable xml
The destination host may not be able to start a domain using the live
updated CPU definition because either libvirt or QEMU may not be new
enough. Thus we need to send the original guest CPU definition.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Jiri Denemark [Tue, 16 May 2017 11:26:54 +0000 (13:26 +0200)]
qemu: Remember CPU def from domain start
When starting a domain we update the guest CPU definition to match what
QEMU actually provided (since it is allowed to add or removed some
features unless check='full' is specified). Let's store the original CPU
in domain private data so that we can use it to provide a backward
compatible domain XML.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Jiri Denemark [Thu, 1 Jun 2017 22:44:06 +0000 (00:44 +0200)]
conf: Introduce virSaveCookie
The code will be used by snapshots and domain save/restore code to store
additional data for a saved running domain. It is analogous to migration
cookies, but simple and one way only.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Jiri Denemark [Tue, 6 Jun 2017 21:41:57 +0000 (23:41 +0200)]
qemu: Refactor qemuDomainSaveHeader
The function is now called virQEMUSaveDataWrite and it is now doing
everything it needs to save both the save image header and domain XML to
a file. Be it a new file or an existing file in which a user wants to
change the domain XML.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Jiri Denemark [Tue, 23 May 2017 18:32:07 +0000 (20:32 +0200)]
qemu: Rename xml_len in virQEMUSaveHeader as data_len
Since virQEMUSaveHeader will be followed by more than just domain XML,
the old name would be confusing as it was designed to describe the
length of all data following the save image header.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com> Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
projects / libvirt.git / log