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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Second it uses outdated logic that goes back to commit 79533da1 of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
Commit v1.3.3-181-gb028e9d7c implmented support for
VIR_MIGRATE_PARAM_PERSIST_XML migration parameter, but forgot to update
virsh.
https://bugzilla.redhat.com/show_bug.cgi?id=835300
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Use the util function virHostdevIsSCSIDevice() to simplify if
statements.
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Add the function virHostdevIsSCSIDevice() which detects whether a
hostdev is a SCSI device or not.
Signed-off-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: Boris 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: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Bjoern Walk <bwalk@linux.vnet.ibm.com>
Reviewed-by: Boris 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: Michal 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: Michal Privoznik <mprivozn@redhat.com>
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 3f71c79768 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.
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.
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: Jiri Denemark <jdenemar@redhat.com>
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: Martin 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: Martin 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: Martin 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: Michal Privoznik <mprivozn@redhat.com>
After commit f2bf5fbb04, MinGW strikes again. Simply print pid as any
other place after commit b7d2d4af2b.
Signed-off-by: Martin 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
Commit 94cc577807 tried fixing build on systems that did not have
SCHED_BATCH or SCHED_IDLE defined. But instead of changing it to
conditional support, it rather completely disabled the support for
setting any scheduler. Since then, such old systems are not
supported, but rather than reverting that commit, let's change that to
the conditional support. That way any addition to the list of
schedulers can follow the same style so that we're consistent in the
future.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1366460
When using the --overwrite switch on a pool-build or pool-create, the
The mkfs.ext{2|3|4} commands use mke2fs which requires using the '-F' switch
in order to force overwriting the current filesystem on the whole disk.
Likewise, the mkfs.vfat command uses mkfs.fat which requires using the '-I'
switch in order to force overwriting the current filesystem on the whole disk.
Old GCC on CentOS 6 thinks vendor and vendor_id might be used
uninitialized in virCPUDefStealModel. The compiler is wrong, though.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
* virNetDevTapCreateInBridgePort() mock: free '*ifname' before
strdupping a hardoded value to it
* testCompareXMLToArgvFiles(): unref 'conn' object in cleanup
* testCompareXMLToArgvHelper(): free 'ldargs' and 'dmargs' in
cleanup
Implement in virtNetClient and VirNetSocket the needed functions to
expose a new libssh transport, providing all the options that the
libssh2 transport supports.
Implement a new libssh transport, which uses libssh to communicate with
remote hosts, and add all the build system stuff (search of libssh,
private symbols, etc) to built it.
This new transport supports all the common ssh authentication methods,
making use of libvirt's auth callbacks for interaction with the user.
Add a couple of helper functions to check whether one of the default
names of SSH keys (as documented in ssh-keygen(1)) exists, and use them
to specify a key for the libssh2 transport if none was passed.
Add an internal variable to mark the FD as "not owned" by the
virNetSocket, in case the internal implementation takes the actual
ownership of the descriptor; this avoids a warning when closing the
socket, as the FD would be invalid.
