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Support MinIO to be deployed on more than 32 nodes (#8492)

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This PR implements locking from a global entity into
a more localized set level entity, allowing for locks
to be held only on the resources which are writing
to a collection of disks rather than a global level.

In this process this PR also removes the top-level
limit of 32 nodes to an unlimited number of nodes. This
is a precursor change before bring in bucket expansion.
This commit is contained in:
Harshavardhana
2019-11-13 12:17:45 -08:00
committed by kannappanr
parent 069b8ee8ff
commit e9b2bf00ad
58 changed files with 2312 additions and 838 deletions
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cmd/xl-v1-healing.go
+1 -1
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@@ -681,7 +681,7 @@ func (xl xlObjects) HealObject(ctx context.Context, bucket, object string, dryRu
// Lock the object before healing. Use read lock since healing
// will only regenerate parts & xl.json of outdated disks.
objectLock := xl.nsMutex.NewNSLock(ctx, bucket, object)
objectLock := xl.nsMutex.NewNSLock(ctx, xl.getLockers(), bucket, object)
if lerr := objectLock.GetRLock(globalHealingTimeout); lerr != nil {
return madmin.HealResultItem{}, lerr
}