If users try to hotplug RNG device with a backend different to
/dev/random or /dev/urandom the whole operation fails as qemu is
unable to access the device. The problem is we don't update
device CGroups during the operation.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

I think when trying to introduce libvirt (we have a section for
that in our index page) it might be useful to promote success
stories - other applications that are based on libvirt.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Not closing the <li> tag on a separate line causes the plain
text version of the file to have no empty line between entries.

qemuDomainObjExitAgent is unsafe.

First it accesses domain object without domain lock.
Second it uses outdated logic that goes back to commit 79533da1 of
year 2009 when code was quite different. (unref function
instead of unreferencing only unlocked and disposed object
in case of last reference and leaved unlocking to the caller otherwise).
Nowadays this logic may lead to disposing locked object
i guess.

Another problem is that the callers of qemuDomainObjEnterAgent
use domain object again (namely priv->agent) without domain lock.

This patch address these two problems.

qemuDomainGetAgent is dropped as unused.

Sometimes after domain restart agent is unavailabe even
if it is up and running in guest. Diagnostic message is
"QEMU guest agent is not available due to an error"
that is 'priv->agentError' is set. Investiagion shows that
'priv->agent' is not NULL, so error flag is set probably
during domain shutdown process and not cleaned up eventually.

The patch is quite simple - just clean up error flag unconditionally
upon domain stop.

Other hunks address other cases when error flag is not cleaned up.

1. processSerialChangedEvent. We need to clean error flag
unconditionally here too. For example if upon first 'connected' event we
fail to connect and set error flag and then connect on second
'connected' event then error flag will remain set erroneously
and make agent unavailable.

2. qemuProcessHandleAgentEOF. If error flag is set and we get
EOF we need to change state (and diagnostic) from 'error' to
'not connected'.

qemuConnectAgent return -1 or -2 in case of different errors.
A. -1 is a case of unsuccessuful connection to guest agent.
B. -2 is a case of destoyed domain during connection attempt.

All qemuConnectAgent callers handle the first error the same way
so let's move this logic into qemuConnectAgent itself. Patched
function returns 0 in case A and -1 in case B.

It is already discussed in "[RFC] daemon: remove hardcode dep on libvirt-guests" [1].

Mgmt can use means to save/restore domains on system shutdown/boot other than
libvirt-guests.service. Thus we need to specify appropriate ordering dependency between
libvirtd, domains and save/restore service. This patch takes approach suggested
in RFC and introduces a systemd target, so that ordering can be built next way:

libvirtd -> domain -> virt-guest-shutdown.target -> save-restore.service.

This way domains are decoupled from specific shutdown service via intermediate
target.

[1] https://www.redhat.com/archives/libvir-list/2016-September/msg01353.html

https://bugzilla.redhat.com/show_bug.cgi?id=1368351Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Commit v1.3.3-181-gb028e9d7 implmented support for
VIR_MIGRATE_PARAM_PERSIST_XML migration parameter, but forgot to update
virsh.

https://bugzilla.redhat.com/show_bug.cgi?id=835300Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Use the util function virHostdevIsSCSIDevice() to simplify if
statements.
Signed-off-by: NMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: NBjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

Add the function virHostdevIsSCSIDevice() which detects whether a
hostdev is a SCSI device or not.
Signed-off-by: NMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: NBjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

Add missing checks if a hostdev is a subsystem/SCSI device before access
the union member 'subsys'/'scsi'.  Also fix indentation and simplify
qemuDomainObjCheckHostdevTaint().
Signed-off-by: NMarc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: NBjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>

New line character in name of storagepool is now forbidden because it
mess virsh output and can be confusing for users.
Validation of name is done in driver, after parsing XML to avoid
problems with dissappeared pools which was already created with
new-line char in name.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

New line character in name of domain is now forbidden because it
mess virsh output and can be confusing for users.
Validation of name is done in drivers, after parsing XML to avoid
problems with dissappeared domains which was already created with
new-line char in name.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

All of these changes have already been merged, so document
them properly.

The new format requires some tweaks to be translated into
a nice plain text output, and the XSLT stylesheet needs to
be updated to match.

We're going to change the format of the source HTML quite
a bit, and we're going to have to update the XSLT stylesheet
accordingly.

Move 2016 releases out of the way before doing so.

Commit 3f71c797 added 'qemu_id' field to track the id of the cpu
as reported by query-cpus. The patch did not include changes necessary
to propagate the id through the functions matching the data to the
libvirt cpu structures and thus all vcpus had id 0.

The field is named 'enable_id' in other structures and a patch recently
added 'qemu_id' which has different semantics. To avoid confusion in the
tests rename the field.

Use 'goto cleanup'-style error handling instead of explicitly
freeing variables in every error path.

Don't use qemuMonitorGetCPUInfo which does a lot of matching to get the
full picture which is not necessary and would be mostly discarded.

Refresh only the vcpu halted state using data from query-cpus.

We don't need to call qemuMonitorGetCPUInfo which is very inefficient to
get data required to update the vcpu 'halted' state.

Add a monitor helper that will retrieve the halted state and return it
in a bitmap so that it can be indexed easily.

Storing of the ID will allow simpler extraction of data present only in
query-cpus without the need to call qemuMonitorGetCPUInfo in statistics
paths.

Whenever qemuMonitorJSONCheckError returns 0, the "return" object is
guaranteed to exist. Thus virJSONValueObjectGetObject will never fail to
get it. On the other hand, virJSONValueObjectGetArray may fail since the
"return" object may not be an array.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

This entry is meant to both get the ball rolling on the
switch and to provide a blueprint of what NEWS file entries
are supposed to look like.

Mimic qemu's behavior on the given command line.

qemu uses this if 'maxcpus' is not present. Do the same in the parsing
code.

Qemu can also use the topology to calculate the total vcpu count. To
allow parsing this move the assignment earlier.

qemu allows following syntax:

  -smp [cpus=]n[,cores=cores][,threads=threads][,sockets=sockets][,maxcpus=maxcpus]

Allow the "cpus" prefix.

Libvirt's code relies on this fact so don't allow parsing a command line
which would have none.

Libvirtd would crash in the post parse callback on such config.

Because this makes the font the same size as the non-monospaced one,
let's change those properties a little bit as well.  <pre/> will be
shrunk a bit and <code/> inside <p/> or <dd/> will have slightly greyer
background.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Overpass 3.0 has monospaced fonts, so why not have the same font for
the monospaced parts of the documentation.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Since we are using Overpass for the web pages, we might be using the
latest version.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Some of those were duplicate, so remove those.  In order to better see
such things in the future, sort them so they are "regular, italic,
bold, bold-italic, light, light-italic".
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

After a944bd92 we gained support for setting gluster debug level.
However, due to a space we haven't tested whether augeas file
actually works.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

After commit f2bf5fbb, MinGW strikes again.  Simply print pid as any
other place after commit b7d2d4af.
Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Unify the logic we use for looking up daemons and admin binaries. Some
lookups prefered $PATH over **/sbin while others left out $PATH
entierly.  We add **/sbin since non-root users might not have these in
their path.

This also unbreaks libvirt when built on Debian systems with usrmerge[0]
and run on systems without it.

[0]: https://packages.debian.org/sid/usrmerge