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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12478) [WRITE] Command line tools for managing Provided Storage Backup mounts
Date Mon, 18 Sep 2017 16:39:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16170264#comment-16170264
] 

Allen Wittenauer commented on HDFS-12478:
-----------------------------------------

bq. hdfs attach -remove

Using two conflicting verbs on the command line is extremely confusing.  'hdfs attach' should
probably 'hdfs psb' or something similar.

> [WRITE] Command line tools for managing Provided Storage Backup mounts
> ----------------------------------------------------------------------
>
>                 Key: HDFS-12478
>                 URL: https://issues.apache.org/jira/browse/HDFS-12478
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Ewan Higgs
>            Assignee: Ewan Higgs
>            Priority: Minor
>
> This is a task for implementing the command line interface for attaching a PROVIDED storage
backup system (see HDFS-9806, HDFS-12090).
> # The administrator should be able to mount a PROVIDED storage volume from the command
line. 
> {code}hdfs attach -create [-name <name>] <hdfs directory to backup> <backup
path (external)>{code}
> # Whitelist of users who are able to manage mounts (create, attach, detach).
> # Be able to interrogate the status of the attached storage (last time a snapshot was
taken, files being backed up).
> # The administrator should be able to remove an attached PROVIDED storage volume from
the command line. This simply means that the synchronization process no longer runs. If the
administrator has configured their setup to no longer have local copies of the data, the blocks
in the subtree are simply no longer accessible as the external file store system is currently
inaccessible.
> {code}hdfs attach -remove <name> [-force | -flush]{code}



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