September 2012 - Devel - libvirt List Archives

[libvirt] [PATCH 0/2] Support for Block Device IO Limits
by Viktor Mihajlovski 04 Sep '12

04 Sep '12

Depending on the hypervisor (e.g. QEMU) it is possible to override certain properties of a block device. In Linux these are called IO limits and can be observed in the guest's sysfs under /sys/block/<dev>/queue. This patch set enables libvirt to override the logical and physical block size for QEMU guests. I wasn't expecting the 0.10.1 release *that* early, so I have added the since 0.10.1 in formatdomain.html.in :-) calling for a v2 patch. Still I wanted to collect review feedback. Viktor Mihajlovski (2): conf: Support for Block Device IO Limits qemu: Support for Block Device IO Limits. docs/formatdomain.html.in | 18 +++++++ docs/schemas/domaincommon.rng | 17 +++++++ src/conf/domain_conf.c | 49 ++++++++++++++++++++ src/conf/domain_conf.h | 5 ++ src/qemu/qemu_capabilities.c | 11 ++++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 8 +++ tests/qemuhelptest.c | 12 +++-- .../qemuxml2argv-disk-iolimits.args | 9 ++++ .../qemuxml2argv-disk-iolimits.xml | 33 +++++++++++++ tests/qemuxml2argvtest.c | 3 + 11 files changed, 162 insertions(+), 4 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-iolimits.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-iolimits.xml

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[libvirt] error: Failed to start pool (already mounted)
by Ragnar Skúlason 04 Sep '12

04 Sep '12

Hi everyone, I'm not sure if this belongs here, I sent a question to the users list yesterday without getting a response, so I'm trying here. I have storage-pool that for some reason became inactive (possibly due to an error with pool-refresh in an old version of a Java API binding). I want to restart the pool but am unable to, due to the volume being mounted: # virsh pool-start [uuid] error: Failed to start pool [uuid] error: Requested operation is not valid: Target '/mnt/[uuid]' is already mounted We have tested this with versions 0.9.12 and 0.9.13. This did work in versions 0.8.x Is it possible to bypass this mount check and start the storage pool (forcefully)? Many thanks, Ragnar Skúlason

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[libvirt] [libvirt-perl PATCH] Fix several APIs
by Osier Yang 04 Sep '12

04 Sep '12

These APIs accept one more argument (flags), which was ignored in the XS implementations. --- Virt.xs | 46 ++++++++++++++++++++++++++-------------------- 1 files changed, 26 insertions(+), 20 deletions(-) diff --git a/Virt.xs b/Virt.xs index 2b8d74c..100ca43 100644 --- a/Virt.xs +++ b/Virt.xs @@ -2844,19 +2844,20 @@ set_scheduler_parameters(dom, newparams, flags=0) HV * -get_memory_parameters(dom) +get_memory_parameters(dom, flags=0) virDomainPtr dom; + unsigned int flags; PREINIT: virMemoryParameter *params; int nparams; CODE: nparams = 0; - if (virDomainGetMemoryParameters(dom, NULL, &nparams, 0) < 0) + if (virDomainGetMemoryParameters(dom, NULL, &nparams, flags) < 0) _croak_error(); Newx(params, nparams, virMemoryParameter); - if (virDomainGetMemoryParameters(dom, params, &nparams, 0) < 0) { + if (virDomainGetMemoryParameters(dom, params, &nparams, flags) < 0) { Safefree(params); _croak_error(); } @@ -2868,45 +2869,47 @@ get_memory_parameters(dom) void -set_memory_parameters(dom, newparams) +set_memory_parameters(dom, newparams, flags=0) virDomainPtr dom; HV *newparams; + unsigned int flags; PREINIT: virTypedParameter *params; int nparams; PPCODE: nparams = 0; - if (virDomainGetMemoryParameters(dom, NULL, &nparams, 0) < 0) + if (virDomainGetMemoryParameters(dom, NULL, &nparams, flags) < 0) _croak_error(); Newx(params, nparams, virMemoryParameter); - if (virDomainGetMemoryParameters(dom, params, &nparams, 0) < 0) { + if (virDomainGetMemoryParameters(dom, params, &nparams, flags) < 0) { Safefree(params); _croak_error(); } vir_typed_param_from_hv(newparams, params, nparams); - if (virDomainSetMemoryParameters(dom, params, nparams, 0) < 0) + if (virDomainSetMemoryParameters(dom, params, nparams, flags) < 0) _croak_error(); Safefree(params); HV * -get_numa_parameters(dom) +get_numa_parameters(dom, flags) virDomainPtr dom; + unsigned int flags; PREINIT: virTypedParameter *params; int nparams; CODE: nparams = 0; - if (virDomainGetNumaParameters(dom, NULL, &nparams, 0) < 0) + if (virDomainGetNumaParameters(dom, NULL, &nparams, flags) < 0) _croak_error(); Newx(params, nparams, virTypedParameter); - if (virDomainGetNumaParameters(dom, params, &nparams, 0) < 0) { + if (virDomainGetNumaParameters(dom, params, &nparams, flags) < 0) { Safefree(params); _croak_error(); } @@ -2918,45 +2921,47 @@ get_numa_parameters(dom) void -set_numa_parameters(dom, newparams) +set_numa_parameters(dom, newparams, flags=0) virDomainPtr dom; HV *newparams; + unsigned int flags; PREINIT: virTypedParameter *params; int nparams; PPCODE: nparams = 0; - if (virDomainGetNumaParameters(dom, NULL, &nparams, 0) < 0) + if (virDomainGetNumaParameters(dom, NULL, &nparams, flags) < 0) _croak_error(); Newx(params, nparams, virTypedParameter); - if (virDomainGetNumaParameters(dom, params, &nparams, 0) < 0) { + if (virDomainGetNumaParameters(dom, params, &nparams, flags) < 0) { Safefree(params); _croak_error(); } vir_typed_param_from_hv(newparams, params, nparams); - if (virDomainSetNumaParameters(dom, params, nparams, 0) < 0) + if (virDomainSetNumaParameters(dom, params, nparams, flags) < 0) _croak_error(); Safefree(params); HV * -get_blkio_parameters(dom) +get_blkio_parameters(dom, flags=0) virDomainPtr dom; + unsigned int flags; PREINIT: virTypedParameter *params; int nparams; CODE: nparams = 0; - if (virDomainGetBlkioParameters(dom, NULL, &nparams, 0) < 0) + if (virDomainGetBlkioParameters(dom, NULL, &nparams, flags) < 0) _croak_error(); Newx(params, nparams, virBlkioParameter); - if (virDomainGetBlkioParameters(dom, params, &nparams, 0) < 0) { + if (virDomainGetBlkioParameters(dom, params, &nparams, flags) < 0) { Safefree(params); _croak_error(); } @@ -2968,21 +2973,22 @@ get_blkio_parameters(dom) void -set_blkio_parameters(dom, newparams) +set_blkio_parameters(dom, newparams, flags=0) virDomainPtr dom; HV *newparams; + unsigned int flags; PREINIT: virTypedParameter *params; int nparams; int needString; PPCODE: nparams = 0; - if (virDomainGetBlkioParameters(dom, NULL, &nparams, 0) < 0) + if (virDomainGetBlkioParameters(dom, NULL, &nparams, flags) < 0) _croak_error(); Newx(params, nparams, virBlkioParameter); - if (virDomainGetBlkioParameters(dom, params, &nparams, 0) < 0) { + if (virDomainGetBlkioParameters(dom, params, &nparams, flags) < 0) { Safefree(params); _croak_error(); } -- 1.7.7.3

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[libvirt] [PATCH] qemu: Don't update graphic definitions on password change failure
by Peter Krempa 04 Sep '12

04 Sep '12

When the password change failed we updated the graphic definition anyways, which is not desired. --- src/qemu/qemu_hotplug.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 1251d6b..a8a904c 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -1517,6 +1517,8 @@ qemuDomainChangeGraphics(struct qemud_driver *driver, VIR_DOMAIN_GRAPHICS_TYPE_VNC, &dev->data.vnc.auth, driver->vncPassword); + if (ret < 0) + return ret; /* Steal the new dev's char * reference */ VIR_FREE(olddev->data.vnc.auth.passwd); @@ -1576,6 +1578,9 @@ qemuDomainChangeGraphics(struct qemud_driver *driver, &dev->data.spice.auth, driver->spicePassword); + if (ret < 0) + return ret; + /* Steal the new dev's char * reference */ VIR_FREE(olddev->data.spice.auth.passwd); olddev->data.spice.auth.passwd = dev->data.spice.auth.passwd; -- 1.7.12

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[libvirt] Problen in cloning of thin LVM
by Pankaj Rawat 04 Sep '12

04 Sep '12

Hi all, I have create a Thin lvm and installed a guest os on it, Now when i cloned that lvm using virt-clone # virt-clone --prompt --force --original lvm_thin1 --name lvm_thin2 --file /dev/volgrp/lvm_thin2 The cloned Disk lvm_thin2 size is fully expanded , But I want a thin Lvm cloned image Well according to my best of knowledge , It could be because the when lvm is getting cloned, The zero are read from the original image #lvs LV VG Attr LSize Pool Origin Data% lvm_thin1 Volgrp Vwi-aotz 8.00g pool 12.18 lvm_thin2 volgrp Vwi-a-tz 8.00g pool 100.00 pool volgrp twi-a-tz 100.00g 8.97 As you can see above the original LVM utilize only 12.18% disk space from the pool, but the cloned lvm_thin2 is fully expanded. Is there is any way how can I clone a THIN LVM without fully expanding it ? Or Is there any way to shrink the cloned LVM to that size without loss of data. Regards Pankaj Rawat DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------

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[libvirt] make check failure
by Shradha Shah 04 Sep '12

04 Sep '12

Hello All, I wanted to ask a question regarding the tests that are run during make check. If a particular test fails when running make check, how do we which test failed and why? Is there a log that helps when debugging such errors? -- Many Thanks, Regards, Shradha Shah

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[libvirt] [PATCH 0/4] Initial OpenBSD support
by Jasper Lievisse Adriaanse 03 Sep '12

03 Sep '12

Hi, Here are some patches to get libvirt building on OpenBSD. I tested basic functionality with virt-manager though there appear to be some rough edges to fix/polish (could also be in virt-manager). At least basic libvirt usage should work on OpenBSD now. Jasper Lievisse Adriaanse (4): Define DYNLIB_NAME on OpenBSD. Fixup some headers in virnetdevbridge.c, needed for OpenBSD. Check for sys/ucred.h and adjust virnetsocket.c for OpenBSD compilation. There's no librt on OpenBSD. configure.ac | 10 ++++++++-- src/rpc/virnetsocket.c | 10 ++++++++++ src/util/virnetdevbridge.c | 9 +++++++++ src/vbox/vbox_XPCOMCGlue.c | 2 +- 4 files changed, 28 insertions(+), 3 deletions(-) -- 1.7.6

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[libvirt] [libvirt-tck PATCH] New test to test numa parameters tuning APIs
by Osier Yang 03 Sep '12

03 Sep '12

To make sure the domain config is not broken after the API calls. --- This depends on https://www.redhat.com/archives/libvir-list/2012-August/msg01792.html --- scripts/domain/202-numa-set-parameters.t | 99 ++++++++++++++++++++++++++++++ 1 files changed, 99 insertions(+), 0 deletions(-) create mode 100644 scripts/domain/202-numa-set-parameters.t diff --git a/scripts/domain/202-numa-set-parameters.t b/scripts/domain/202-numa-set-parameters.t new file mode 100644 index 0000000..fd96866 --- /dev/null +++ b/scripts/domain/202-numa-set-parameters.t @@ -0,0 +1,99 @@ +# -*- perl -*- +# +# Copyright (C) 2009-2012 Red Hat, Inc. +# Copyright (C) 2012 Osier Yang +# +# This program is free software; You can redistribute it and/or modify +# it under the GNU General Public License as published by the Free +# Software Foundation; either version 2, or (at your option) any +# later version +# +# The file "LICENSE" distributed along with this file provides full +# details of the terms and conditions +# + +=pod + +=head1 NAME + +domain/212-set-numa-parameters.t - Set NUMA parameters + +=head1 DESCRIPTION + +The test case validates the internal data structure is consistent +after the API call to set NUMA parameters for a domain. + +=cut + +use strict; +use warnings; + +use Test::More tests => 10; + +use Sys::Virt::TCK; +use Test::Exception; + +my $tck = Sys::Virt::TCK->new(); +my $conn = eval { $tck->setup(); }; +BAIL_OUT "failed to setup test harness: $@" if $@; +END { + $tck->cleanup if $tck; + unlink "tck.img" if -f "tck.img"; +} + + +my $xml = $tck->generic_domain("tck")->as_xml; + +diag "Creating a new persistent domain"; +my $dom; +ok_domain(sub { $dom = $conn->define_domain($xml) }, "created persistent domain object"); + +diag "Starting inactive domain"; +$dom->create; +ok($dom->get_id > 0, "running domain with ID > 0"); + +# NUMA mode can't be changed for a live domain +my %params = ( + Sys::Virt::Domain::NUMA_NODESET => '0', +); + +diag "Set numa parameters, affects live config"; +lives_ok(sub {$dom->set_numa_parameters(\%params, Sys::Virt::Domain::AFFECT_LIVE)}, "set_numa_parameters"); + +diag "Destroy the domain"; +$dom->destroy; + +diag "Make sure the domain can be started after setting numa parameters"; +$dom->create; +ok($dom->get_id > 0, "running domain with ID > 0"); + +diag "Get numa parameters"; +my $params = $dom->get_numa_parameters(Sys::Virt::Domain::AFFECT_LIVE); +ok($params->{Sys::Virt::Domain::NUMA_NODESET} eq '0', 'Check nodeset'); + +diag "Destroy the domain"; +$dom->destroy; + +$params{Sys::Virt::Domain::NUMA_MODE} = Sys::Virt::Domain::NUMATUNE_MEM_STRICT; + +diag "Set numa parameters, affects next boot"; +lives_ok(sub {$dom->set_numa_parameters(\%params, Sys::Virt::Domain::AFFECT_CONFIG)}, "set_numa_parameters"); + +diag "Get numa parameters"; +my $params = $dom->get_numa_parameters(Sys::Virt::Domain::AFFECT_LIVE); +ok($params->{Sys::Virt::Domain::NUMA_MODE} == Sys::Virt::Domain::NUMATUNE_MEM_STRICT, 'Check mode'); +ok($params->{Sys::Virt::Domain::NUMA_NODESET} eq '0', 'Check nodeset'); + +diag "Make sure the domain can be started after setting numa parameters"; +$dom->create; +ok($dom->get_id > 0, "running domain with ID > 0"); + +diag "Destroying the persistent domain"; +$dom->destroy; +$dom->undefine; + +diag "Checking that transient domain has gone away"; +ok_error(sub { $conn->get_domain_by_name("tck") }, "NO_DOMAIN error raised from missing domain", + Sys::Virt::Error::ERR_NO_DOMAIN); + +# end -- 1.7.7.3

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[libvirt] [PATCH 0/4] Support to set disk wwn
by Osier Yang 03 Sep '12

03 Sep '12

This introduces new element <wwn> for disk, to allow to set wwn (just like setting serial number) for the virtual disk (Only QEMU devices like ide-drive, ide-hd, ide-cd, scsi-disk, scsi-hd, and scsi-cd support it). Osier Yang (4): schema: Add schema for disk <wwn> conf: Parse and format disk <wwn> qemu: Add caps to indentify if setting wwn is supported by qemu qemu: Use disk wwn in qemu command line docs/formatdomain.html.in | 5 +++ docs/schemas/basictypes.rng | 6 +++ docs/schemas/domaincommon.rng | 5 +++ docs/schemas/nodedev.rng | 6 --- src/conf/domain_conf.c | 8 ++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_capabilities.c | 4 ++ src/qemu/qemu_capabilities.h | 2 + src/qemu/qemu_command.c | 35 ++++++++++++++++++++ .../qemuxml2argv-disk-ide-wwn.args | 6 +++ .../qemuxml2argvdata/qemuxml2argv-disk-ide-wwn.xml | 28 ++++++++++++++++ .../qemuxml2argv-disk-scsi-disk-wwn.args | 10 ++++++ .../qemuxml2argv-disk-scsi-disk-wwn.xml | 35 ++++++++++++++++++++ tests/qemuxml2argvtest.c | 7 ++++ 14 files changed, 152 insertions(+), 6 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-ide-wwn.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-ide-wwn.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-wwn.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-wwn.xml -- 1.7.7.3

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[libvirt] [RFC PATCH v1 0/4] Add cpu hotplug support to libvirt.
by Tang Chen 03 Sep '12

03 Sep '12

It seems that libvirt is not cpu hotplug aware. Please refer to the following problem. 1. At first, we have 2 cpus. # cat /cgroup/cpuset/cpuset.cpus 0-1 # cat /cgroup/cpuset/libvirt/qemu/cpuset.cpus 0-1 2. And we have a vm1 with following configuration. <cputune> <vcpupin vcpu='0' cpuset='1'/> <hypervisorpin cpuset='1'/> </cputune> 3. Offline cpu1. # echo 0 > /sys/devices/system/cpu/cpu1/online # cat /sys/devices/system/cpu/cpu1/online 0 # cat /cgroup/cpuset/cpuset.cpus 0 # cat /cgroup/cpuset/libvirt/qemu/cpuset.cpus 0 # cat /cgroup/cpuset/libvirt/lxc/cpuset.cpus 0 4. Online cpu1. # echo 1 > /sys/devices/system/cpu/cpu1/online # cat /sys/devices/system/cpu/cpu1/online 1 # cat /cgroup/cpuset/cpuset.cpus 0-1 # cat /cgroup/cpuset/libvirt/cpuset.cpus 0 # cat /cgroup/cpuset/libvirt/qemu/cpuset.cpus 0 # cat /cgroup/cpuset/libvirt/lxc/cpuset.cpus 0 Here，cgroup updated cpuset.cpus，but not for libvirt directory，and also qemu and lxc directory. vm1 cannot be started again. # virsh start vm1 error: Failed to start domain vm1 error: Unable to set cpuset.cpus: Permission denied And libvird gave the following errors. 2012-07-17 07:30:22.478+0000: 3118: error : qemuSetupCgroupVcpuPin:498 : Unable to set cpuset.cpus: Permission denied These patches resolves this problem by listening on the netlink for cpu hotplug event. When the netlink service gets the cpu hotplug event, it will attract the cpuid in the message, and add it into cpuset.cpus in: /cgroup/cpuset/libvirt /cgroup/cpuset/libvirt/qemu /cgroup/cpuset/libvirt/lxc Tang Chen (4): Add cpu hotplug handler for netlink service. Register cpu hotplug netlink handler for libvirtd. Register cpu hotplug netlink handler for qemu driver. Register cpu hotplug netlink handler for lxc driver. daemon/libvirtd.c | 11 +++ include/libvirt/virterror.h | 2 + src/Makefile.am | 1 + src/libvirt_private.syms | 5 + src/lxc/lxc_driver.c | 8 ++ src/qemu/qemu_driver.c | 8 ++ src/util/cgroup.c | 6 +- src/util/cgroup.h | 4 + src/util/hotplug.c | 221 +++++++++++++++++++++++++++++++++++++++++++ src/util/hotplug.h | 32 +++++++ src/util/virterror.c | 3 +- 11 files changed, 297 insertions(+), 4 deletions(-) create mode 100644 src/util/hotplug.c create mode 100644 src/util/hotplug.h -- 1.7.10.1

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