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Date: Tue, 24 Oct 2017 15:25:02 +0000 (UTC)
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Subject: [jira] [Commented] (GEODE-3801) Utilize hard-links to copy files
 during backups
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archived-at: Tue, 24 Oct 2017 15:25:07 -0000


    [ https://issues.apache.org/jira/browse/GEODE-3801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16217102#comment-16217102 ] 

ASF subversion and git services commented on GEODE-3801:
--------------------------------------------------------

Commit 6a4e50e7ef2b7a3114e0ec0ba4f1a738de881dfd in geode's branch refs/heads/develop from [~nreich]
[ https://gitbox.apache.org/repos/asf?p=geode.git;h=6a4e50e ]

GEODE-3801: Use hardlinks for backup oplog files (#963)

* GEODE-3801: Use hardlinks for backup oplog files

  * Oplog files that are backed up are read-only. For this reason,
    they can be transfered to the backup location through hard links,
    instead of copying the file. This change improves speed of backups.
    If the creation of a hard link fails, we revert to the existing copy
    behavior.
  * During backups, the copying of the oplog's krf file was being done while
    that file could still be in the process of writing. This change ensures
    that if a krf is to be written, that it is finished and included in the
    backup
  * cleanup existing oplog tests

> Utilize hard-links to copy files during backups
> -----------------------------------------------
>
>                 Key: GEODE-3801
>                 URL: https://issues.apache.org/jira/browse/GEODE-3801
>             Project: Geode
>          Issue Type: Sub-task
>          Components: persistence
>            Reporter: Nick Reich
>            Assignee: Nick Reich
>
> Instead of copying files which are read-only during a backup, create a hard-link to the file in the backup location. This prevents losing the file if the original location is deleted, but does not require make a new copy of the file. If hard-links cannot be created, revert to the existing copying mechanic.


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