[libvirt] [PATCH v5 3/5] storage: add support for creating qcow2 images with extensions
Ján Tomko
jtomko at redhat.com
Wed Jun 19 15:24:12 UTC 2013
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")) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("Feature %s not supported with compat"
+ " level %s"),
+ virStorageFileFeatureTypeToString(i),
+ compat);
+ goto error;
+ }
+ break;
+ case VIR_STORAGE_FILE_FEATURE_LAST:
+ ;
+ }
+ virBufferAsprintf(&buf, "%s,",
+ virStorageFileFeatureTypeToString(i));
+ }
+ }
+ }
+
virBufferTrim(&buf, ",", -1);
- if (virBufferError(&buf)) {
- virBufferFreeAndReset(&buf);
- virReportOOMError();
- return -1;
- }
+ if (virBufferError(&buf))
+ goto no_memory;
*opts = virBufferContentAndReset(&buf);
return 0;
+
+no_memory:
+ virReportOOMError();
+error:
+ virBufferFreeAndReset(&buf);
+ return -1;
}
virCommandPtr
@@ -695,6 +730,16 @@ virStorageBackendCreateQemuImgCmd(virConnectPtr conn,
_("metadata preallocation only available with qcow2"));
return NULL;
}
+ if (vol->target.compat && vol->target.format != VIR_STORAGE_FILE_QCOW2) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("compatibility option only available with qcow2"));
+ return NULL;
+ }
+ if (vol->target.features && vol->target.format != VIR_STORAGE_FILE_QCOW2) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("format features only available with qcow2"));
+ return NULL;
+ }
if (inputvol) {
if (!(inputPath = inputvol->target.path)) {
@@ -816,7 +861,10 @@ virStorageBackendCreateQemuImgCmd(virConnectPtr conn,
if (imgformat == QEMU_IMG_BACKING_FORMAT_OPTIONS) {
if (virStorageBackendCreateQemuImgOpts(&opts,
backing ? backingType : NULL,
- do_encryption, preallocate) < 0)
+ do_encryption, preallocate,
+ vol->target.format,
+ vol->target.compat,
+ vol->target.features) < 0)
return NULL;
if (opts)
virCommandAddArgList(cmd, "-o", opts, NULL);
diff --git a/tests/storagevolxml2argvdata/qcow2-1.1.argv b/tests/storagevolxml2argvdata/qcow2-1.1.argv
new file mode 100644
index 0000000..797499f
--- /dev/null
+++ b/tests/storagevolxml2argvdata/qcow2-1.1.argv
@@ -0,0 +1 @@
+qemu-img create -f qcow2 -b /dev/null -o backing_fmt=raw,encryption=on,compat=1.1 /var/lib/libvirt/images/OtherDemo.img 5242880K
diff --git a/tests/storagevolxml2argvdata/qcow2-lazy.argv b/tests/storagevolxml2argvdata/qcow2-lazy.argv
new file mode 100644
index 0000000..9160d47
--- /dev/null
+++ b/tests/storagevolxml2argvdata/qcow2-lazy.argv
@@ -0,0 +1 @@
+qemu-img create -f qcow2 -b /dev/null -o backing_fmt=raw,encryption=on,compat=1.1,lazy_refcounts /var/lib/libvirt/images/OtherDemo.img 5242880K
diff --git a/tests/storagevolxml2argvdata/vol-qcow2-1.1.xml b/tests/storagevolxml2argvdata/vol-qcow2-1.1.xml
new file mode 100644
index 0000000..696e1e0
--- /dev/null
+++ b/tests/storagevolxml2argvdata/vol-qcow2-1.1.xml
@@ -0,0 +1,32 @@
+<volume>
+ <name>OtherDemo.img</name>
+ <key>/var/lib/libvirt/images/OtherDemo.img</key>
+ <source>
+ </source>
+ <capacity unit="G">5</capacity>
+ <allocation>294912</allocation>
+ <target>
+ <path>/var/lib/libvirt/images/OtherDemo.img</path>
+ <format type='qcow2'/>
+ <permissions>
+ <mode>0644</mode>
+ <owner>0</owner>
+ <group>0</group>
+ <label>unconfined_u:object_r:virt_image_t:s0</label>
+ </permissions>
+ <encryption format='qcow'>
+ <secret type='passphrase' uuid='e78d4b51-a2af-485f-b0f5-afca709a80f4'/>
+ </encryption>
+ <features/>
+ </target>
+ <backingStore>
+ <path>/dev/null</path>
+ <format type='raw'/>
+ <permissions>
+ <mode>0644</mode>
+ <owner>0</owner>
+ <group>0</group>
+ <label>unconfined_u:object_r:virt_image_t:s0</label>
+ </permissions>
+ </backingStore>
+</volume>
diff --git a/tests/storagevolxml2argvdata/vol-qcow2-lazy.xml b/tests/storagevolxml2argvdata/vol-qcow2-lazy.xml
new file mode 100644
index 0000000..c1d7875
--- /dev/null
+++ b/tests/storagevolxml2argvdata/vol-qcow2-lazy.xml
@@ -0,0 +1,35 @@
+<volume>
+ <name>OtherDemo.img</name>
+ <key>/var/lib/libvirt/images/OtherDemo.img</key>
+ <source>
+ </source>
+ <capacity unit="G">5</capacity>
+ <allocation>294912</allocation>
+ <target>
+ <path>/var/lib/libvirt/images/OtherDemo.img</path>
+ <format type='qcow2'/>
+ <permissions>
+ <mode>0644</mode>
+ <owner>0</owner>
+ <group>0</group>
+ <label>unconfined_u:object_r:virt_image_t:s0</label>
+ </permissions>
+ <encryption format='qcow'>
+ <secret type='passphrase' uuid='e78d4b51-a2af-485f-b0f5-afca709a80f4'/>
+ </encryption>
+ <compat>1.1</compat>
+ <features>
+ <lazy_refcounts/>
+ </features>
+ </target>
+ <backingStore>
+ <path>/dev/null</path>
+ <format type='raw'/>
+ <permissions>
+ <mode>0644</mode>
+ <owner>0</owner>
+ <group>0</group>
+ <label>unconfined_u:object_r:virt_image_t:s0</label>
+ </permissions>
+ </backingStore>
+</volume>
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);
return ret==0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
--
1.8.1.5
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