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feat: Single drive XL implementation (#14970)

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Main motivation is move towards a common backend format
for all different types of modes in MinIO, allowing for
a simpler code and predictable behavior across all features.

This PR also brings features such as versioning, replication,
transitioning to single drive setups.
This commit is contained in:
Harshavardhana
2022-05-30 10:58:37 -07:00
committed by GitHub
parent 5792be71fa
commit f1abb92f0c
62 changed files with 4288 additions and 270 deletions
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8
cmd/erasure-metadata.go
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@@ -99,7 +99,7 @@ func (fi FileInfo) IsValid() bool {
fi.Erasure.Index <= dataBlocks+parityBlocks &&
len(fi.Erasure.Distribution) == (dataBlocks+parityBlocks))
return ((dataBlocks >= parityBlocks) &&
(dataBlocks != 0) && (parityBlocks != 0) &&
(dataBlocks > 0) && (parityBlocks >= 0) &&
correctIndexes)
}
@@ -284,7 +284,7 @@ func (fi FileInfo) ObjectToPartOffset(ctx context.Context, offset int64) (partIn
func findFileInfoInQuorum(ctx context.Context, metaArr []FileInfo, modTime time.Time, quorum int) (FileInfo, error) {
// with less quorum return error.
if quorum < 2 {
if quorum < 1 {
return FileInfo{}, errErasureReadQuorum
}
metaHashes := make([]string, len(metaArr))
@@ -398,6 +398,10 @@ func writeUniqueFileInfo(ctx context.Context, disks []StorageAPI, bucket, prefix
// readQuorum is the min required disks to read data.
// writeQuorum is the min required disks to write data.
func objectQuorumFromMeta(ctx context.Context, partsMetaData []FileInfo, errs []error, defaultParityCount int) (objectReadQuorum, objectWriteQuorum int, err error) {
if defaultParityCount == 0 {
return 1, 1, nil
}
// get the latest updated Metadata and a count of all the latest updated FileInfo(s)
latestFileInfo, err := getLatestFileInfo(ctx, partsMetaData, errs)
if err != nil {