When changing memtune limits to unlimited with AFFECT_CONFIG, the values in virDomainDef are set to PARAM_UNLIMITED, which causes the whole <memtune> to be formatted. This can be changed in all drivers, but it also makes sense to use the default (0) as another value for "unlimited", since zero memory limit makes no sense. Signed-off-by: Martin Kletzander <mkletzan@redhat.com> --- Notes: This patch efectively completes my previous patch on PARAM_UNLIMITED [1], but I discovered it just now and found out that the behavior hasn't changed in between. [1] https://www.redhat.com/archives/libvir-list/2013-December/msg00434.html src/conf/domain_conf.c | 44 ++++++++++++---------- .../qemuxml2argv-memtune-unlimited.args | 6 +++ .../qemuxml2argv-memtune-unlimited.xml | 29 ++++++++++++++ tests/qemuxml2argvtest.c | 1 + .../qemuxml2xmlout-memtune-unlimited.xml | 27 +++++++++++++ tests/qemuxml2xmltest.c | 1 + 6 files changed, 88 insertions(+), 20 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memtune-unlimited.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memtune-unlimited.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-memtune-unlimited.xml diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index b76cf26..e0ab4b1 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -16643,28 +16643,32 @@ virDomainDefFormatInternal(virDomainDefPtr def, } /* add memtune only if there are any */ - if (def->mem.hard_limit || def->mem.soft_limit || def->mem.min_guarantee || - def->mem.swap_hard_limit) + if ((def->mem.hard_limit && + def->mem.hard_limit != VIR_DOMAIN_MEMORY_PARAM_UNLIMITED) || + (def->mem.soft_limit && + def->mem.hard_limit != VIR_DOMAIN_MEMORY_PARAM_UNLIMITED) || + (def->mem.swap_hard_limit && + def->mem.hard_limit != VIR_DOMAIN_MEMORY_PARAM_UNLIMITED) || + def->mem.min_guarantee) { virBufferAddLit(buf, " <memtune>\n"); - if (def->mem.hard_limit) { - virBufferAsprintf(buf, " <hard_limit unit='KiB'>" - "%llu</hard_limit>\n", def->mem.hard_limit); - } - if (def->mem.soft_limit) { - virBufferAsprintf(buf, " <soft_limit unit='KiB'>" - "%llu</soft_limit>\n", def->mem.soft_limit); - } - if (def->mem.min_guarantee) { - virBufferAsprintf(buf, " <min_guarantee unit='KiB'>" - "%llu</min_guarantee>\n", def->mem.min_guarantee); - } - if (def->mem.swap_hard_limit) { - virBufferAsprintf(buf, " <swap_hard_limit unit='KiB'>" - "%llu</swap_hard_limit>\n", def->mem.swap_hard_limit); - } - if (def->mem.hard_limit || def->mem.soft_limit || def->mem.min_guarantee || - def->mem.swap_hard_limit) + if (def->mem.hard_limit) { + virBufferAsprintf(buf, " <hard_limit unit='KiB'>" + "%llu</hard_limit>\n", def->mem.hard_limit); + } + if (def->mem.soft_limit) { + virBufferAsprintf(buf, " <soft_limit unit='KiB'>" + "%llu</soft_limit>\n", def->mem.soft_limit); + } + if (def->mem.min_guarantee) { + virBufferAsprintf(buf, " <min_guarantee unit='KiB'>" + "%llu</min_guarantee>\n", def->mem.min_guarantee); + } + if (def->mem.swap_hard_limit) { + virBufferAsprintf(buf, " <swap_hard_limit unit='KiB'>" + "%llu</swap_hard_limit>\n", def->mem.swap_hard_limit); + } virBufferAddLit(buf, " </memtune>\n"); + } if (def->mem.hugepage_backed || def->mem.nosharepages || def->mem.locked) { virBufferAddLit(buf, " <memoryBacking>\n"); diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memtune-unlimited.args b/tests/qemuxml2argvdata/qemuxml2argv-memtune-unlimited.args new file mode 100644 index 0000000..8bef546 --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-memtune-unlimited.args @@ -0,0 +1,6 @@ +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \ +/usr/bin/qemu \ +-name QEMUGuest1 -S -M pc -m 214 -smp 1 -nographic -monitor \ +unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb \ +-hda /dev/HostVG/QEMUGuest1 -net none -serial \ +none -parallel none diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memtune-unlimited.xml b/tests/qemuxml2argvdata/qemuxml2argv-memtune-unlimited.xml new file mode 100644 index 0000000..526129b --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-memtune-unlimited.xml @@ -0,0 +1,29 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='MiB'>214</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <memtune> + <hard_limit unit='KiB'>9007199254740991</hard_limit> + </memtune> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu</emulator> + <disk type='block' device='disk'> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0'/> + <controller type='ide' index='0'/> + <memballoon model='virtio'/> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index f9abf1b..f75e457 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1126,6 +1126,7 @@ mymain(void) QEMU_CAPS_KVM, QEMU_CAPS_CPU_HOST); DO_TEST("memtune", QEMU_CAPS_NAME); + DO_TEST("memtune-unlimited", QEMU_CAPS_NAME); DO_TEST("blkiotune", QEMU_CAPS_NAME); DO_TEST("blkiotune-device", QEMU_CAPS_NAME); DO_TEST("cputune", QEMU_CAPS_NAME); diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-memtune-unlimited.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-memtune-unlimited.xml new file mode 100644 index 0000000..1d29fa7 --- /dev/null +++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-memtune-unlimited.xml @@ -0,0 +1,27 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static'>1</vcpu> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu</emulator> + <disk type='block' device='disk'> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='usb' index='0'/> + <controller type='ide' index='0'/> + <controller type='pci' index='0' model='pci-root'/> + <memballoon model='virtio'/> + </devices> +</domain> diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c index ceaaf6a..2a9849c 100644 --- a/tests/qemuxml2xmltest.c +++ b/tests/qemuxml2xmltest.c @@ -247,6 +247,7 @@ mymain(void) DO_TEST("encrypted-disk"); DO_TEST_DIFFERENT("memtune"); + DO_TEST_DIFFERENT("memtune-unlimited"); DO_TEST("blkiotune"); DO_TEST("blkiotune-device"); DO_TEST("cputune"); -- 1.8.5.1