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Increase reserve on ScaleIO disk formatting for fragmentation (#7955)

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Signed-off-by: Marcus Sorensen <mls@apple.com>
Co-authored-by: Marcus Sorensen <mls@apple.com>
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Marcus Sorensen 2023-09-14 05:13:16 -06:00 committed by GitHub
parent b8c8e17318
commit f049d4d189
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2 changed files with 5 additions and 5 deletions
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4
plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/storage/ScaleIOStorageAdaptor.java
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@ -552,12 +552,12 @@ public class ScaleIOStorageAdaptor implements StorageAdaptor {
/**
* Calculates usable size from raw size, assuming qcow2 requires 192k/1GB for metadata
* We also remove 32MiB for potential encryption/safety factor.
* We also remove 128MiB for encryption/fragmentation/safety factor.
* @param raw size in bytes
* @return usable size in bytesbytes
*/
public static long getUsableBytesFromRawBytes(Long raw) {
long usable = raw - (32 << 20) - ((raw >> 30) * 200704);
long usable = raw - (128 << 20) - ((raw >> 30) * 200704);
if (usable < 0) {
usable = 0L;
}

6
plugins/hypervisors/kvm/src/test/java/com/cloud/hypervisor/kvm/storage/ScaleIOStorageAdaptorTest.java
View File

@ -23,9 +23,9 @@ import org.junit.Test;
public class ScaleIOStorageAdaptorTest {
@Test
public void getUsableBytesFromRawBytesTest() {
Assert.assertEquals("Overhead calculated for 8Gi size", 8554774528L, ScaleIOStorageAdaptor.getUsableBytesFromRawBytes(8L << 30));
Assert.assertEquals("Overhead calculated for 4Ti size", 4294130925568L, ScaleIOStorageAdaptor.getUsableBytesFromRawBytes(4000L << 30));
Assert.assertEquals("Overhead calculated for 500Gi size", 536737005568L, ScaleIOStorageAdaptor.getUsableBytesFromRawBytes(500L << 30));
Assert.assertEquals("Overhead calculated for 8Gi size", 8454111232L, ScaleIOStorageAdaptor.getUsableBytesFromRawBytes(8L << 30));
Assert.assertEquals("Overhead calculated for 4Ti size", 4294030262272L, ScaleIOStorageAdaptor.getUsableBytesFromRawBytes(4000L << 30));
Assert.assertEquals("Overhead calculated for 500Gi size", 536636342272L, ScaleIOStorageAdaptor.getUsableBytesFromRawBytes(500L << 30));
Assert.assertEquals("Unsupported small size", 0, ScaleIOStorageAdaptor.getUsableBytesFromRawBytes(1L));
}
}