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Allow cloning volumes with no capacity specified

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In virStorageVolCreateXML, add VIR_VOL_XML_PARSE_NO_CAPACITY
to the call parsing the XML of the new volume to make the capacity
optional.

If the capacity is omitted, use the capacity of the old volume.
We already do that for values that are less than the original
volume capacity.
This commit is contained in:
Ján Tomko 2015-02-17 16:54:53 +01:00
parent 2bd47d9c64
commit e3f1d2a820
6 changed files with 58 additions and 3 deletions
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6
src/storage/storage_driver.c
View File

@ -1810,7 +1810,8 @@ storageVolCreateXMLFrom(virStoragePoolPtr obj,
goto cleanup;
}
newvol = virStorageVolDefParseString(pool->def, xmldesc, 0);
newvol = virStorageVolDefParseString(pool->def, xmldesc,
VIR_VOL_XML_PARSE_NO_CAPACITY);
if (newvol == NULL)
goto cleanup;
@ -1824,7 +1825,8 @@ storageVolCreateXMLFrom(virStoragePoolPtr obj,
goto cleanup;
}
/* Is there ever a valid case for this? */
/* Use the original volume's capacity in case the new capacity
* is less than that, or it was omitted */
if (newvol->target.capacity < origvol->target.capacity)
newvol->target.capacity = origvol->target.capacity;

4
tests/storagevolxml2argvdata/qcow2-nocapacity-convert-prealloc.argv Normal file
View File

@ -0,0 +1,4 @@
qemu-img convert -f raw -O qcow2 \
-o encryption=on,preallocation=metadata \
/var/lib/libvirt/images/sparse.img \
/var/lib/libvirt/images/OtherDemo.img

9
tests/storagevolxml2argvtest.c
View File

@ -49,6 +49,7 @@ testCompareXMLToArgvFiles(bool shouldFail,
char *expectedCmdline = NULL;
char *actualCmdline = NULL;
int ret = -1;
unsigned long parse_flags = 0;
int len;
@ -84,7 +85,10 @@ testCompareXMLToArgvFiles(bool shouldFail,
goto cleanup;
}
if (!(vol = virStorageVolDefParseString(pool, volXmlData, 0)))
if (inputvolxml)
parse_flags |= VIR_VOL_XML_PARSE_NO_CAPACITY;
if (!(vol = virStorageVolDefParseString(pool, volXmlData, parse_flags)))
goto cleanup;
if (inputvolxml &&
@ -305,6 +309,9 @@ mymain(void)
DO_TEST("pool-dir", "vol-qcow2-nocow",
NULL, NULL,
"qcow2-nocow-compat", 0, FMT_COMPAT);
DO_TEST("pool-dir", "vol-qcow2-nocapacity",
"pool-dir", "vol-file",
"qcow2-nocapacity-convert-prealloc", flags, FMT_OPTIONS);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}

19
tests/storagevolxml2xmlin/vol-qcow2-nocapacity.xml Normal file
View File

@ -0,0 +1,19 @@
<volume>
<name>OtherDemo.img</name>
<key>/var/lib/libvirt/images/OtherDemo.img</key>
<source>
</source>
<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>
</target>
</volume>

21
tests/storagevolxml2xmlout/vol-qcow2-nocapacity.xml Normal file
View File

@ -0,0 +1,21 @@
<volume type='file'>
<name>OtherDemo.img</name>
<key>/var/lib/libvirt/images/OtherDemo.img</key>
<source>
</source>
<capacity unit='bytes'>0</capacity>
<allocation unit='bytes'>0</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>
</target>
</volume>

2
tests/storagevolxml2xmltest.c
View File

@ -126,6 +126,8 @@ mymain(void)
DO_TEST("pool-sheepdog", "vol-sheepdog");
DO_TEST("pool-gluster", "vol-gluster-dir");
DO_TEST("pool-gluster", "vol-gluster-dir-neg-uid");
DO_TEST_FULL("pool-dir", "vol-qcow2-nocapacity",
VIR_VOL_XML_PARSE_NO_CAPACITY);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}