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XL: listOnlineDisks should use modTime instead of version. (#2166)

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This change is needed to make reading from objects future proof
in-terms of handling online disks. Our current counter is not
based on affirmative knowledge and relies on arithmetic sequence
which can lead to bugs.

Using modTime simplifies the understanding of `xl.json` and future
tooling / debugging of the format.
This commit is contained in:
Harshavardhana
2016-07-12 15:20:31 -07:00
committed by Anand Babu (AB) Periasamy
parent e5cd35aad0
commit 623e0f9243
7 changed files with 158 additions and 67 deletions
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xl-v1-metadata.go
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@@ -87,7 +87,6 @@ func pickValidErasureInfo(eInfos []erasureInfo) erasureInfo {
type statInfo struct {
Size int64 `json:"size"` // Size of the object `xl.json`.
ModTime time.Time `json:"modTime"` // ModTime of the object `xl.json`.
Version int64 `json:"version"` // Version of the object `xl.json`, useful to calculate quorum.
}
// A xlMetaV1 represents `xl.json` metadata header.