[libvirt] [PATCH 10/16] LXC from native: migrate memory tuning

--- src/lxc/lxc_native.c | 26 ++++++++++++++++ tests/lxcconf2xmldata/lxcconf2xml-memtune.config | 12 ++++++++ tests/lxcconf2xmldata/lxcconf2xml-memtune.xml | 38 ++++++++++++++++++++++++ tests/lxcconf2xmltest.c | 1 + 4 files changed, 77 insertions(+) create mode 100644 tests/lxcconf2xmldata/lxcconf2xml-memtune.config create mode 100644 tests/lxcconf2xmldata/lxcconf2xml-memtune.xml diff --git a/src/lxc/lxc_native.c b/src/lxc/lxc_native.c index 7cb5125..582924e 100644 --- a/src/lxc/lxc_native.c +++ b/src/lxc/lxc_native.c @@ -767,6 +767,29 @@ lxcCreateIdmap(virDomainDefPtr def, virPropertiesPtr properties) return 0; } +static void +lxcSetMemTune(virDomainDefPtr def, virPropertiesPtr properties) +{ + char *value = NULL; + + if ((value = virPropertiesLookup(properties, + "lxc.cgroup.memory.limit_in_bytes")) && STRNEQ(value, "-1")) { + unsigned long long size = lxcConvertSize(value, 0) / 1024; + def->mem.max_balloon = size; + def->mem.hard_limit = size; + } + + if ((value = virPropertiesLookup(properties, + "lxc.cgroup.memory.soft_limit_in_bytes")) && + STRNEQ(value, "-1")) + def->mem.soft_limit = lxcConvertSize(value, 0) / 1024; + + if ((value = virPropertiesLookup(properties, + "lxc.cgroup.memory.memsw.limit_in_bytes")) && + STRNEQ(value, "-1")) + def->mem.swap_hard_limit = lxcConvertSize(value, 0) / 1024; +} + virDomainDefPtr lxcParseConfigString(const char *config, const char *fstab, @@ -862,6 +885,9 @@ lxcParseConfigString(const char *config, if (lxcCreateIdmap(vmdef, properties) < 0) goto error; + /* lxc.cgroup.memory.* */ + lxcSetMemTune(vmdef, properties); + goto cleanup; error: diff --git a/tests/lxcconf2xmldata/lxcconf2xml-memtune.config b/tests/lxcconf2xmldata/lxcconf2xml-memtune.config new file mode 100644 index 0000000..ef01e23 --- /dev/null +++ b/tests/lxcconf2xmldata/lxcconf2xml-memtune.config @@ -0,0 +1,12 @@ +lxc.mount.entry = /etc/resolv.conf etc/resolv.conf none bind,ro 0 0 +lxc.rootfs = /var/lib/lxc/migrate_test/rootfs +lxc.utsname = migrate_test +lxc.autodev=1 +lxc.mount = /var/lib/lxc/migrate_test/fstab + +# 1GiB +lxc.cgroup.memory.limit_in_bytes = 1073741824 +# 128MiB +lxc.cgroup.memory.soft_limit_in_bytes = 134217728 +# 2GiB +lxc.cgroup.memory.memsw.limit_in_bytes = 2147483648 diff --git a/tests/lxcconf2xmldata/lxcconf2xml-memtune.xml b/tests/lxcconf2xmldata/lxcconf2xml-memtune.xml new file mode 100644 index 0000000..4e4698e --- /dev/null +++ b/tests/lxcconf2xmldata/lxcconf2xml-memtune.xml @@ -0,0 +1,38 @@ +<domain type='lxc'> + <name>migrate_test</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>1048576</memory> + <currentMemory unit='KiB'>0</currentMemory> + <memtune> + <hard_limit unit='KiB'>1048576</hard_limit> + <soft_limit unit='KiB'>131072</soft_limit> + <swap_hard_limit unit='KiB'>2097152</swap_hard_limit> + </memtune> + <vcpu placement='static' current='0'>1</vcpu> + <os> + <type>exe</type> + <init>/sbin/init</init> + </os> + <features> + <privnet/> + </features> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <filesystem type='mount' accessmode='passthrough'> + <source dir='/var/lib/lxc/migrate_test/rootfs'/> + <target dir='/'/> + </filesystem> + <filesystem type='mount' accessmode='passthrough'> + <source dir='/etc/resolv.conf'/> + <target dir='/etc/resolv.conf'/> + <readonly/> + </filesystem> + <filesystem type='ram' accessmode='passthrough'> + <source usage='2017885' units='KiB'/> + <target dir='/run'/> + </filesystem> + </devices> +</domain> diff --git a/tests/lxcconf2xmltest.c b/tests/lxcconf2xmltest.c index 6793c29..bf5b06e 100644 --- a/tests/lxcconf2xmltest.c +++ b/tests/lxcconf2xmltest.c @@ -111,6 +111,7 @@ mymain(void) DO_TEST("physnetwork"); DO_TEST("macvlannetwork"); DO_TEST("idmap"); + DO_TEST("memtune"); return ret; } -- 1.8.5.2