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https://issues.apache.org/jira/browse/HDFS-11127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15655180#comment-15655180
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Chen Liang commented on HDFS-11127:
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1. The volumeSize field of {{VolumeInfoProto}} is exactly what you mentioned:
the declared volume size. But {{VolumeInfoProto}} also has a {{usage}} field
which is left for actual used size.
2. Actually that's what I'm trying to do here. Make it optional in {{optional
uint32 blockSize = 4;}}, such that if user has a block size specified, CBlock
server will use it, if this field is missing (user not specify block size),
CBlock server will use 4KB.
> Block Storage : add block storage service protocol
> --------------------------------------------------
>
> Key: HDFS-11127
> URL: https://issues.apache.org/jira/browse/HDFS-11127
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs
> Reporter: Chen Liang
> Assignee: Chen Liang
> Attachments: HDFS-11127-HDFS-7240.001.patch
>
>
> This JIRA adds block service protocol. This protocol is expose to client for
> volume operations including create, delete, info and list. Note that this
> protocol has nothing to do with actual data read/write on a particular volume.
> (Also note that the term "cblock" is the current term used to refer to the
> block storage system.)
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