virshReportError() function frees the most recent error reported from
libvirt. Condition that checks if connection to the daemon was broken
during last command was then limited to check for SIGPIPE signal not
taking into account possible errors signalized without SIGPIPE.
This patch moves the check before the error is freed, to take into
account code that does not emit SIGPIPE while failing.
* tools/virsh.c: - move check for broken connection before error print.
A generic error code was returned, if the user aborted a migration job.
This made it hard to distinguish between a user requested abort and an
error that might have occured. This patch introduces a new error code,
which is returned in the specific case of a user abort, while leaving
all other failures with their existing code. This makes it easier to
distinguish between failure while mirgrating and an user requested
abort.
* include/libvirt/virterror.h: - add new error code
* src/util/virterror.c: - add message for the new error code
* src/qemu/qemu_migration.h: - Emit operation aborted error instead of
operation failed, on migration abort
Add an option for virsh undefine command, to remove associated storage
volumes while undefining a domain. This patch allows the user to remove
associated (libvirt managed ) storage volumes while undefining a domain.
The new option --storage for the undefine command takes a string
argument that consists of comma separated list of target or source path
of volumes to be undefined. Volumes are removed after the domain has
been successfully undefined,
If a volume is not part of a storage pool, the user is warned to remove
the volume in question himself.
Option --wipe-storage may be specified along with this, that ensures
the image is wiped before removing.
Option --remove-all-storage enables the user to remove all storage. The
name is chosen long as the users should be aware what they're about to
do.
Commit f2013c9dd1 added implementation of
virDomainSnapshotListChildrenNames override export, but registration of
the newly exported function was not added.
*python/libvirt-override.c: - register export of function
If parsing of arguments failed, virsh did silently exit returning and
error state, but not specifying the possible problem.
* tools/virsh: cmdNodesuspend: - error handling added
Add support for newly supported Intel cpu features. Newly supported
flags are: pclmuldq, dtes64, smx, fma, pdcm, movbe, xsave, osxsave and
avx. This adds support for Intel's Sandy Bridge platform.
Reported by Alex Jia <ajia@redhat.com>. Function cmdDomIfGetLink did not
set a success return value on success path.
Signed-off-by: Alex Jia<ajia@redhat.com>
This patch adds binding for virNodeGetMemoryStats method of libvirtd.
Return value is represented as a python dictionary mapping field
names to values.
Originaly, the code checked if another client is the queue and infered
ownership of the buck from that. Commit fa9595003d
added a separate variable to track the buck. That caused, that a new
call might enter claiming it has the buck, while another thread was
signalled to take the buck. This ends in two threads claiming they hold
the buck and entering poll(). This happens due to a race on waking up
threads on the client lock mutex.
This caused multi-threaded clients to hang, most prominently visible and
reproducible on python based clients, like virt-manager.
This patch causes threads, that have been signalled to take the buck to
re-check if buck is held by another thread.
Only one IPv4 DHCP definition is supported. Originally the code checked
for a multiple definition and returned an error, but the new domain
definition was already added to networks. This patch moves the check
before the newly defined network is added to active networks.
*src/network/bridge_driver.c: networkDefine(): - move multiple IPv4
addresses check before
definition is used.
If something fails while initializing qemu job object in
qemuDomainObjPrivateAlloc(), memory to the private pointer is freed, but
after that, the pointer is still dereferenced, which may result in a
segfault.
* qemuDomainObjPrivateAlloc() - Don't dereference NULL pointer.
Previous commit clears number of items alocated in lxcSetupLoopDevices
if VIR_REALLOC_N fails. In that case, the pointer is not NULL, and
causes leaking FDs that have been allocated.
* src/lxc/lxc_controller.c: revert zeroing array size
This patch cleans the cpu baseline function using new libvirt helper
functions and fixes XPath expression that selects <cpu> elements from
the source file, that can contain concatenated <capabilities> XMLs,
domain XMLs and bare <cpu> elements. The fixed XPath expression ensures
not to select NUMA <cpu id=... elements.
This patch also removes vshRealloc function, that remained unused after
cleaning up cpu-baseline.
https://bugzilla.redhat.com/show_bug.cgi?id=731645
Commit 0a22f54 added --min-guarantee option for the memtune command.
This option is supported only by the ESX hypervisor. This patch adds a
statement about this fact, to prevent user confusion.
This patch also adds explanation how to clear/set to unlimited the
memory tunables. (documments the -1 value).
Virsh man page lists driver types to be used with attach-device
command, but does not specify that those are usable only with the XEN
Hypervisor.
This patch adds statement, that those options specified are applicable
only on the Xen hypervisor and adds option usable with qemu emulator.
This patch also changes type of error returned by QEMU driver if the
user specifies incompatible driver type from VIR_ERR_INTERNAL_ERROR to
VIR_ERR_CONFIG_UNSUPPORTED.
Users of virsh complain that output of the domblkstat command
is not intuitive enough. This patch adds explanation of fields
returned by this command to the help section for domblkstat and
the man page of virsh. Also a switch --human is added for
domblkstat that prints the fields with more descriptive
texts.
This patch also changes sequence of the output fields and their
names back to the order and spelling established by previous
versions of virsh to maintain compatibility with scripts.
Example of ordered and "translated" output:
PRE-patch:
virsh # domblkstat 1 vda
vda wr_bytes 5170176
vda wr_operations 511
vda rd_bytes 82815488
vda rd_operations 3726
POST-patch:
virsh # domblkstat 1 vda
vda rd_req 3726
vda rd_bytes 82815488
vda wr_req 478
vda wr_bytes 4965376
Example of human readable output:
virsh # domblkstat 1 vda --human
Device: vda
number of read operations: 3726
number of read bytes: 82815488
number of write operations: 478
number of bytes written: 4965376
https://bugzilla.redhat.com/show_bug.cgi?id=731656
Mac OS X 10.6. Snow Leopard and probably other do not provide a mkfs
command to create filesystems. Macro MKFS then remained undefined and
did not provide any substitute, so that build failed on a missing
argument.
Struct virStoragePoolProbeResult was compiled in conditionaly, but
virStorageBackendFileSystemProbe used it unconditionaly. This patch
exempts the struct from conditional include.
Documentation did not specify, that some permissions are required on
target path for coredump for the user running the hypervisor.
Diff to v1:
- reword statements
Commit 498d783 cleans up some of virtual file names for parsing strings
in memory. This patch cleans up (hopefuly) the rest forgotten by the
first patch.
This patch also changes all of the previously modified "filenames" to
valid URI's replacing spaces for underscores.
Changes to v1:
- Replace all spaces for underscores, so that the strings form valid
URI's
- Replace spaces in places changed by commit 498d783
Commit 2a0d75e5 added file python/libvirt-qemu-override.c that contains
code that does not pass "make syntax-check". This patch adds an
exception for this file and the check.
prohibit_always_true_header_tests
python/libvirt-qemu-override.c:17:#undef HAVE_PTHREAD_H
maint.mk: do not test the above HAVE_<header>_H symbol(s);
with the corresponding gnulib module, they are always true
make: *** [sc_prohibit_always_true_header_tests] Error 1
Commit ffe28ab74b introduced regression
while communicating with older libvirtd command 'domblkstat' used the new
API and did not check for VIR_ERR_RPC error code signalling the remote
server does not support this API and did not fall back to older API.
Thereafter 'domblkstat' ended with "error: unknown procedure: 243".
While parsing XML strings from memory, the previous convention in
libvirt was to set the virtual file name to "domain.xml" or something
similar. This could potentialy trick the user into looking for a file
named domain.xml on the disk in an attempt to fix the error.
This patch changes these filenames to something that can't be as easily
confused for a valid filename.
Examples of error messages:
---------------------------
Error while loading file from disk:
15:07:59.015: 527: error : catchXMLError:709 : /path/to/domain.xml:1: StartTag: invalid element name
<domain type='kvm'><
--------------------^
Error while parsing definition in memory:
15:08:43.581: 525: error : catchXMLError:709 : (domain definition):2: error parsing attribute name
<name>vm1</name>
--^
Two new commands are added to virsh that wrap usage of
virDomainUpdateDeviceFlags for changing link state of domain's network
interfaces. These wrappers extract network devices's xml configuration
and modify the link state for easy manipulation from an user's perspective.
- domif-setlink - set link state of a domains virtual network interface
- domif-getlink - get link state
* tools/virsh.c - Add functionality to virsh
* tools/virsh.pod - Manpage documentation
This patch enables modifying network device configuration using the
virUpdateDeviceFlags API method. Matching of devices is accomplished
using MAC addresses.
While updating live configuration of a running domain, the user is
allowed only to change link state of the interface. Additional
modifications may be added later. For now the code checks for
unsupported changes and thereafter changes the link state, if
applicable.
When updating persistent configuration of guest's network interface the
whole configuration (except for the MAC address) may be modified and
is stored for the next startup.
* src/qemu/qemu_driver.c - Add dispatching of virUpdateDevice for
network devices update (live/config)
* src/qemu/qemu_hotplug.c - add setting of initial link state on live
device addition
- add function to change network device
configuration. By now it supports only
changing of link state
* src/qemu/qemu_hotplug.h - Headers to above functions
* src/qemu/qemu_process.c - set link states before virtual machine
start. Qemu does not support setting of
this on the command line.
This patch adds handlers for modification of guest's interface
link state. Both HMP and QMP commands are supported, but as the
link state functionality is from the beginning supported in QMP
the HMP code will probably never be used.
A new element is introduced to XML that allows to control
state of virtual network interfaces in hypervisors.
Live modification of the link state allows networking tools
propagate topology changes to guest OS or testing of
scenarios in complex (virtual) networks.
This patch adds elements to XML grammars and parsing and generating
code.
This patch adds functions to compare structures containing network
device configuration for equality. They serve for the purpose of
disallowing unsupported changes to live network devices.
This patch modifies error handling function for the XML parser provided
by libxml2.
Originaly only a line number and error message were logged. With this
new error handler function, the user is provided with a more complex
description of the parsing error.
Context of the error is printed in libXML2 style and filename of the
file, that caused the error is printed. Example of an parse error:
13:41:36.262: 16032: error : catchXMLError:706 :
/etc/libvirt/qemu/rh_bad.xml:58: Opening and ending tag mismatch: name
line 2 and domain
</domain>
---------^
Context of the error gives the user hints that may help to quickly
locate a corrupt xml file.
fixes BZs:
----------
Bug 708735 - [RFE] Show column and line on XML parsing error
https://bugzilla.redhat.com/show_bug.cgi?id=708735
Bug 726771 - libvirt does not specify problem file if persistent xml is
invalid
https://bugzilla.redhat.com/show_bug.cgi?id=726771
Early errors during start of libvirtd didn't have
an error reporting mechanism and caused libvirtd
to exit silently (only the return value indicated
an error).
Libvirt logging is initialized very early using
enviroment variables and the internal error reporting
API is used to report early errors.
v2 changes:
- print errors unconditionaly before logging starts
- fix message to US spelling
v2.5 changes:
- initialize logging from enviroment
- log all early errors using VIR_ERROR
v3 changes:
- move virSetLogFromEnv() after virInitialize()
fixes: https://bugzilla.redhat.com/show_bug.cgi?id=728654
Peter Krempa