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XL/erasure-read: Support parallel reads from disks.

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This commit is contained in:
Krishna Srinivas
2016-06-22 03:04:11 +05:30
parent 78ae696749
commit 17efaaa902
3 changed files with 108 additions and 73 deletions
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xl-v1-object.go
+7 -3
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@@ -91,15 +91,19 @@ func (xl xlObjects) GetObject(bucket, object string, startOffset int64, length i
totalBytesRead := int64(0)
// Read from all parts.
for ; partIndex <= lastPartIndex; partIndex++ {
if length == totalBytesRead {
break
}
// Save the current part name and size.
partName := xlMeta.Parts[partIndex].Name
partSize := xlMeta.Parts[partIndex].Size
if partSize > (length - totalBytesRead) {
partSize = length - totalBytesRead
readSize := partSize - partOffset
if readSize > (length - totalBytesRead) {
readSize = length - totalBytesRead
}
// Start reading the part name.
n, err := erasureReadFile(writer, onlineDisks, bucket, pathJoin(object, partName), partName, eInfos, partOffset, partSize)
n, err := erasureReadFile(writer, onlineDisks, bucket, pathJoin(object, partName), partName, eInfos, partOffset, readSize, partSize)
if err != nil {
return err
}