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validate storage class across pools when setting config (#11320)

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```
mc admin config set alias/ storage_class standard=EC:3
```

should only succeed if parity ratio is valid for all
server pools, if not we should fail proactively.

This PR also needs to bring other changes now that
we need to cater for variadic drive counts per pool.

Bonus fixes also various bugs reproduced with

- GetObjectWithPartNumber()
- CopyObjectPartWithOffsets()
- CopyObjectWithMetadata()
- PutObjectPart,PutObject with truncated streams
This commit is contained in:
Harshavardhana
2021-01-22 12:09:24 -08:00
committed by GitHub
parent a35cbb3ff3
commit a6c146bd00
27 changed files with 313 additions and 198 deletions
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27
cmd/erasure-server-pool.go
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@@ -167,8 +167,12 @@ func (z *erasureServerPools) GetAllLockers() []dsync.NetLocker {
return z.serverPools[0].GetAllLockers()
}
func (z *erasureServerPools) SetDriveCount() int {
return z.serverPools[0].SetDriveCount()
func (z *erasureServerPools) SetDriveCounts() []int {
setDriveCounts := make([]int, len(z.serverPools))
for i := range z.serverPools {
setDriveCounts[i] = z.serverPools[i].SetDriveCount()
}
return setDriveCounts
}
type serverPoolsAvailableSpace []poolAvailableSpace
@@ -320,16 +324,19 @@ func (z *erasureServerPools) Shutdown(ctx context.Context) error {
func (z *erasureServerPools) BackendInfo() (b BackendInfo) {
b.Type = BackendErasure
setDriveCount := z.SetDriveCount()
scParity := globalStorageClass.GetParityForSC(storageclass.STANDARD)
if scParity <= 0 {
scParity = z.serverPools[0].defaultParityCount
}
b.StandardSCData = setDriveCount - scParity
b.StandardSCParity = scParity
rrSCParity := globalStorageClass.GetParityForSC(storageclass.RRS)
b.RRSCData = setDriveCount - rrSCParity
// Data blocks can vary per pool, but parity is same.
for _, setDriveCount := range z.SetDriveCounts() {
b.StandardSCData = append(b.StandardSCData, setDriveCount-scParity)
b.RRSCData = append(b.RRSCData, setDriveCount-rrSCParity)
}
b.StandardSCParity = scParity
b.RRSCParity = rrSCParity
return
}
@@ -1360,7 +1367,7 @@ func (z *erasureServerPools) HealObjects(ctx context.Context, bucket, prefix str
// knows that its not our first attempt at 'prefix'
err = nil
if quorumCount == z.SetDriveCount() && opts.ScanMode == madmin.HealNormalScan {
if quorumCount == set.setDriveCount && opts.ScanMode == madmin.HealNormalScan {
continue
}
@@ -1482,8 +1489,8 @@ func (z *erasureServerPools) Health(ctx context.Context, opts HealthOptions) Hea
reqInfo := (&logger.ReqInfo{}).AppendTags("maintenance", strconv.FormatBool(opts.Maintenance))
b := z.BackendInfo()
writeQuorum := b.StandardSCData
if b.StandardSCData == b.StandardSCParity {
writeQuorum := b.StandardSCData[0]
if writeQuorum == b.StandardSCParity {
writeQuorum++
}