Libvirt special-cases a specific VIR_ERR_RPC from the remote driver
back into VIR_ERR_NO_SUPPORT on the client, so that clients can
handle missing rpc functions the same whether the hypervisor driver
is local or remote. However, commit c1b22644 introduced a regression:
VIR_FROM_THIS changed from VIR_FROM_REMOTE to VIR_FROM_RPC, so the
special casing no longer works if the server uses the newer error
domain.
* src/rpc/virnetclientprogram.c
(virNetClientProgramDispatchError): Also cater to 0.9.3 and newer.
This patch fixes the bug shown in bugzilla 738778. It's not an nwfilter problem but a connection sharing / closure issue.
https://bugzilla.redhat.com/show_bug.cgi?id=738778
Depending on the speed / #CPUs of the machine you are using you may not see this bug all the time.
* conf/domain_conf.c: allocate memory to def->redirdevs in
virDomainDefParseXML such as VIR_ALLOC_N(def->redirdevs, n),
however, virDomainDefFree(def) hasn't released these memory.
* Detected in valgrind run:
==19820== 209 (16 direct, 193 indirect) bytes in 1 blocks are definitely lost in loss record 25 of 26
==19820== at 0x4A04A28: calloc (vg_replace_malloc.c:467)
==19820== by 0x4A13AF: virAllocN (memory.c:129)
==19820== by 0x4D4A0E: virDomainDefParseXML (domain_conf.c:7258)
==19820== by 0x4D4C93: virDomainDefParseNode (domain_conf.c:7512)
==19820== by 0x4D562F: virDomainDefParse (domain_conf.c:7465)
==19820== by 0x415863: testCompareXMLToXMLFiles (qemuxml2xmltest.c:35)
==19820== by 0x415982: testCompareXMLToXMLHelper (qemuxml2xmltest.c:80)
==19820== by 0x416D31: virtTestRun (testutils.c:140)
==19820== by 0x415604: mymain (qemuxml2xmltest.c:192)
==19820== by 0x416437: virtTestMain (testutils.c:689)
==19820== by 0x3CA7A1ECDC: (below main) (in /lib64/libc-2.12.so)
==19820==
==19820== LEAK SUMMARY:
==19820== definitely lost: 16 bytes in 1 blocks
==19820== indirectly lost: 193 bytes in 5 blocks
==19820== possibly lost: 0 bytes in 0 blocks
==19820== still reachable: 1,054 bytes in 21 blocks
* How to reproduce?
% valgrind -v --leak-check=full ./tests/qemuxml2xmltest
Signed-off-by: Alex Jia <ajia@redhat.com>
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
With this patch, it is hopefully a bit more obvious that for
snapshot-create-as, a literal '--diskspec' is mandatory if name
or description was omitted, but optional if all earlier options
were provided.
These all denote two diskspecs and a description:
virsh snapshot-create-as dom name desc vda vdb
virsh snapshot-create-as dom name desc --diskspec vda --diskspec vdb
virsh snapshot-create-as dom name desc --diskspec vda vdb
virsh snapshot-create-as dom name desc vda --diskspec vdb
virsh snapshot-create-as dom --diskspec vda --diskspec vdb name desc
This gives two diskspecs but no description:
virsh snapshot-create-as dom name --diskspec vda --diskspec vdb
And this treats 'vda' as the description, with only one diskspec:
virsh snapshot-create-as dom name vda vdb
The help output now shows:
snapshot-create-as <domain> [<name>] [<description>] [--print-xml] [--no-metadata] [--halt] [--disk-only] [[--diskspec] <string>]...
I also checked the help output for echo and send-key, which are two
other variants of argv commands.
* tools/virsh.pod (snapshot-create-as): Document when a literal
--diskspec must preceed a diskspec argument.
* tools/virsh.c (vshCmddefHelp): Update help output for argv when
naming the option is useful.
(vshCmddefGetData): Fix logic on when argv was seen.
* tests/virsh-optparse: Add tests to avoid regressions.
The new doc text had a few readability issues. Also, the
monitor command text copied a bit too much from the attach case.
* src/libvirt-qemu.c (virDomainQemuMonitorCommand)
(virDomainQemuAttach): Fix typos and grammar.
Adjust qemuMigrationRun() to use migMaxBandwidth in qemuDomainObjPrivate
structure when setting qemu migration speed. Caller-specified 'resource'
parameter overrides migMaxBandwidth.
The qemu migration speed default is 32MiB/s as defined in migration.c
/* Migration speed throttling */
static int64_t max_throttle = (32 << 20);
There's no need to throttle migration when targeting a file, so set migration
speed to unlimited prior to migration, and restore to libvirt default value
after migration.
Default units is MB for migrate_set_speed monitor command, so
(INT64_MAX / (1024 * 1024)) is used for unlimited migration speed.
Tested with both json and text monitors.
Now that migration speed is stored in qemuDomainObjPrivate structure,
save the new value when invoking qemuDomainMigrateSetMaxSpeed().
Allow setting migration speed on inactive domain too.
The maximum bandwidth that can be consumed when migrating a domain
is better classified as an operational vs configuration parameter of
the dommain. As such, store this parameter in qemuDomainObjPrivate
structure.
Commit c246b025 added new functions, but forgot to export them,
resulting in a build failure when using modules.
* src/libvirt_private.syms (network.h): Export new functions.
Commit 973fcd8f introduced the ability for qemu to reject snapshot
reversion on an ABI incompatibility; but the very example that was
first proposed on-list[1] as a demonstration of an ABI incompatibility,
namely that of changing the max memory allocation, was not being
checked for, resulting in a cryptic failure when running with larger
max mem than what the snapshot was created with:
error: operation failed: Error -22 while loading VM state
This commit merely protects the three variables within mem that are
referenced by qemu_command.c, rather than all 7 (the other 4 variables
affect cgroup handling, but as far as I can tell, have no visible effect
to the qemu guest). This also affects migration and save file handling,
which are other places where we perform ABI compatibility checks.
[1] https://www.redhat.com/archives/libvir-list/2010-December/msg00331.html
* src/conf/domain_conf.c (virDomainDefCheckABIStability): Add
memory sizing checks.
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".
Regression introduced in commit 3881a470, due to an improper rebase
of a cleanup written beforehand but only applied after a rebased of
a refactoring that created a new function in commit 25fb3ef.
Also avoids passing NULL to printf %s.
* src/qemu/qemu_driver.c: In qemuDomainSnapshotForEachQcow2()
it free up the memory of qemu_driver->qemuImgBinary in the
cleanup tag which leads to the garbage value of qemuImgBinary
in qemu_driver struct and libvirtd crash when running
"virsh snapshot-create" command a second time.
Signed-off-by: Eric Blake <eblake@redhat.com>
This is a bit painful for example when starting virt-manager
it tends to clutter libvirtd.log with invalid operation on cpu pinning
for defined but not running domains. A priori those kind of errors
don't indicate an error when executing the command but on a precondition
for running the API, and honnestly while the application should report
it, logging it as an error in libvirtd.log is not really useful,
Related bug: https://bugzilla.redhat.com/show_bug.cgi?id=590807
* daemon/libvirtd.c: extend daemonErrorLogFilter() to filter out
errors of type VIR_ERR_OPERATION_INVALID
'+' in strings get translated to ' ' when editing domains.
While xenDaemonDomainCreateXML() did URL-escape the sexpr,
xenDaemonDomainDefineXML() did not.
Remove the explicit urlencode() in xenDaemonDomainCreateXML() and add
the direct encoding calls to xend_op_ext() because it calls xend_post()
which uses "Content-Type: application/x-www-form-urlencoded". According
to <http://www.w3.org/TR/html4/interact/forms.html#h-17.13.4.1> this
requires all parameters to be url-encoded as specified in rfc1738.
Notice: virBufferAsprintf(..., "%s=%s", ...) is again replaced by three
calls to virBufferURIEncodeString() and virBufferAddChar() because '='
is a "reserved" character, which would get escaped by
virBufferURIEncodeString(), which - by the way - escapes anything not
c_isalnum().
Signed-off-by: Philipp Hahn <hahn@univention.de>
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>
--^
Regression introduced in commit d6f6b2d194. Running
'virsh snapshot-create dom' would mistakenly report that
disks can only be specified for disk snapshots.
* src/conf/domain_conf.c (virDomainSnapshotDefParseString): Only
give error about no disk support when <disk> was found.
This has the added benefit of making 'snapshot-create dom --no-metadata'
now able to tell you the name of the just-generated snapshot.
* tools/virsh.c (vshSnapshotCreate, cmdSnapshotCurrent): Don't get
XML just for name.
These functions access internals of the opaque object, and do
not need any rpc counterpart. It could be argued that we should
have provided these when snapshot objects were first introduced,
since all the other vir*Ptr objects have at least a GetName accessor.
* include/libvirt/libvirt.h.in (virDomainSnapshotGetName)
(virDomainSnapshotGetDomain, virDomainSnapshotGetConnect): Declare.
* src/libvirt.c (virDomainSnapshotGetName)
(virDomainSnapshotGetDomain, virDomainSnapshotGetConnect): New
functions.
* src/libvirt_public.syms: Export them.
Xen PV domU's have no PCI bus. node_device_udev.c calls pci_system_init
which looks for /sys/bus/pci. If it does not find /sys/bus/pci (which it
won't in a Xen PV domU) it returns unsuccesfully (ENOENT), which libvirt
considers fatal. This makes libvirt unusable in this environment, even
though there are plenty of valid virtualisation options that work
there (LXC, UML, and QEmu spring to mind)
https://bugzilla.redhat.com/show_bug.cgi?id=709471
Signed-off-by: Soren Hansen <soren@linux2go.dk>
* src/rpc/virnettlscontext.c: fix memory leak on
virNetTLSContextValidCertificate.
* Detected in valgrind run:
==25667==
==25667== 6,085 (44 direct, 6,041 indirect) bytes in 1 blocks are definitely
lost in loss record 326 of 351
==25667== at 0x4005447: calloc (vg_replace_malloc.c:467)
==25667== by 0x4F2791F3: _asn1_add_node_only (structure.c:53)
==25667== by 0x4F27997A: _asn1_copy_structure3 (structure.c:421)
==25667== by 0x4F276A50: _asn1_append_sequence_set (element.c:144)
==25667== by 0x4F2743FF: asn1_der_decoding (decoding.c:1194)
==25667== by 0x4F22B9CC: gnutls_x509_crt_import (x509.c:229)
==25667== by 0x805274B: virNetTLSContextCheckCertificate
(virnettlscontext.c:1009)
==25667== by 0x804DE32: testTLSSessionInit (virnettlscontexttest.c:693)
==25667== by 0x804F14D: virtTestRun (testutils.c:140)
==25667==
==25667== 23,188 (88 direct, 23,100 indirect) bytes in 11 blocks are definitely
lost in loss record 346 of 351
==25667== at 0x4005447: calloc (vg_replace_malloc.c:467)
==25667== by 0x4F22B841: gnutls_x509_crt_init (x509.c:50)
==25667== by 0x805272B: virNetTLSContextCheckCertificate
(virnettlscontext.c:1003)
==25667== by 0x804DDD1: testTLSSessionInit (virnettlscontexttest.c:673)
==25667== by 0x804F14D: virtTestRun (testutils.c:140)
* How to reproduce?
% cd libvirt && ./configure && make && make -C tests valgrind
or
% valgrind -v --leak-check=full ./tests/virnettlscontexttest
Signed-off-by: Alex Jia <ajia@redhat.com>
