Qcow2 small IO random write performance will drop dramatically if the l2 cache table could not cover the whole disk. This will be a lot of l2 cache table RW operations if cache miss happens frequently. This patch exports the qcow2 driver parameter l2-cache-size/refcount-cache-size, first added in Qemu 2.2, and cache-clean-interval, first added in Qemu 2.5, in libvirt. *** BLURB HERE *** Liu Qing (2): conf, docs: Add qcow2 cache configuration support qemu: add capability checking for qcow2 cache configuration docs/formatdomain.html.in | 21 ++++++++++ docs/schemas/domaincommon.rng | 24 +++++++++++ src/conf/domain_conf.c | 30 ++++++++++++++ src/qemu/qemu_capabilities.c | 15 +++++++ src/qemu/qemu_capabilities.h | 3 ++ src/qemu/qemu_command.c | 47 ++++++++++++++++++++++ src/util/virstoragefile.c | 3 ++ src/util/virstoragefile.h | 4 ++ tests/qemucapabilitiesdata/caps_2.4.0.x86_64.xml | 2 + tests/qemucapabilitiesdata/caps_2.5.0.x86_64.xml | 3 ++ .../caps_2.6.0-gicv2.aarch64.xml | 3 ++ .../caps_2.6.0-gicv3.aarch64.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.6.0.ppc64le.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.6.0.x86_64.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.9.0.ppc64le.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml | 3 ++ tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 3 ++ ...argv-disk-drive-qcow2-cache-clean-interval.args | 27 +++++++++++++ ...2argv-disk-drive-qcow2-cache-clean-interval.xml | 37 +++++++++++++++++ ...emuxml2argv-disk-drive-qcow2-l2-cache-size.args | 27 +++++++++++++ ...qemuxml2argv-disk-drive-qcow2-l2-cache-size.xml | 37 +++++++++++++++++ ...2argv-disk-drive-qcow2-refcount-cache-size.args | 27 +++++++++++++ ...l2argv-disk-drive-qcow2-refcount-cache-size.xml | 37 +++++++++++++++++ tests/qemuxml2argvtest.c | 6 +++ ...mlout-disk-drive-qcow2-cache-clean-interval.xml | 41 +++++++++++++++++++ ...muxml2xmlout-disk-drive-qcow2-l2-cache-size.xml | 41 +++++++++++++++++++ ...xmlout-disk-drive-qcow2-refcount-cache-size.xml | 41 +++++++++++++++++++ tests/qemuxml2xmltest.c | 3 ++ 32 files changed, 509 insertions(+) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-qcow2-cache-clean-interval.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-qcow2-cache-clean-interval.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-qcow2-l2-cache-size.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-qcow2-l2-cache-size.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-qcow2-refcount-cache-size.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-qcow2-refcount-cache-size.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-drive-qcow2-cache-clean-interval.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-drive-qcow2-l2-cache-size.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-drive-qcow2-refcount-cache-size.xml -- 1.8.3.1