Re: [libvirt] [PATCH v5 3/5] storage: add support for creating qcow2 images with extensions

Add -o compat= and -o lazy_refcounts options for qemu-img. --- src/storage/storage_backend.c | 62 ++++++++++++++++++++++--- tests/storagevolxml2argvdata/qcow2-1.1.argv | 1 + tests/storagevolxml2argvdata/qcow2-lazy.argv | 1 + tests/storagevolxml2argvdata/vol-qcow2-1.1.xml | 32 +++++++++++++ tests/storagevolxml2argvdata/vol-qcow2-lazy.xml | 35 ++++++++++++++ tests/storagevolxml2argvtest.c | 2 + 6 files changed, 126 insertions(+), 7 deletions(-) create mode 100644 tests/storagevolxml2argvdata/qcow2-1.1.argv create mode 100644 tests/storagevolxml2argvdata/qcow2-lazy.argv create mode 100644 tests/storagevolxml2argvdata/vol-qcow2-1.1.xml create mode 100644 tests/storagevolxml2argvdata/vol-qcow2-lazy.xml diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c index deea850..b2c9608 100644 --- a/src/storage/storage_backend.c +++ b/src/storage/storage_backend.c @@ -633,9 +633,15 @@ static int virStorageBackendCreateQemuImgOpts(char **opts, const char *backingType, bool encryption, - bool preallocate) + bool preallocate, + int format, + const char *compat, + virBitmapPtr features) { virBuffer buf = VIR_BUFFER_INITIALIZER; + bool b; + int i; + if (backingType) virBufferAsprintf(&buf, "backing_fmt=%s,", backingType); if (encryption) @@ -643,16 +649,45 @@ virStorageBackendCreateQemuImgOpts(char **opts, if (preallocate) virBufferAddLit(&buf, "preallocation=metadata,"); + if (compat) + virBufferAsprintf(&buf, "compat=%s,", compat); + if (features && format == VIR_STORAGE_FILE_QCOW2) { + for (i = 0; i < VIR_STORAGE_FILE_FEATURE_LAST; i++) { + ignore_value(virBitmapGetBit(features, i, &b)); + if (b) { + switch (i) {

+ case VIR_STORAGE_FILE_FEATURE_LAZY_REFCOUNTS: + if (STREQ(compat, "0.10")) {

diff --git a/tests/storagevolxml2argvtest.c b/tests/storagevolxml2argvtest.c index 92ab2f2..25ff5a7 100644 --- a/tests/storagevolxml2argvtest.c +++ b/tests/storagevolxml2argvtest.c @@ -188,6 +188,8 @@ mymain(void) "qcow2-nobacking-none", 0, FMT_NONE); DO_TEST(false, "pool-dir", "vol-qcow2-nobacking", "vol-file", "qcow2-nobacking-convert-none", 0, FMT_NONE); + DO_TEST(false, "pool-dir", "vol-qcow2-lazy", NULL, "qcow2-lazy", 0, FMT_OPTIONS); + DO_TEST(false, "pool-dir", "vol-qcow2-1.1", NULL, "qcow2-1.1", 0, FMT_OPTIONS);