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https://issues.apache.org/jira/browse/BOOKKEEPER-494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13751134#comment-13751134
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Vinay commented on BOOKKEEPER-494:
----------------------------------
This patch is just to update cookies.
In case of replacement of disks, data copy should be done by admin itself
before calling the admin command.
> Ability to add new ledger disk to a bookie
> ------------------------------------------
>
> Key: BOOKKEEPER-494
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-494
> Project: Bookkeeper
> Issue Type: New Feature
> Components: bookkeeper-server
> Reporter: Sijie Guo
> Assignee: Vinay
> Fix For: 4.3.0
>
> Attachments: BOOKKEEPER-494.diff
>
>
> Currently we had *Cookie* for each bookie to record the directories it used
> for ledgers. So when the admin wants to add a new disk for a bookie, we can't
> change the configuration and restart it simply. an admin command would be
> added to help admin guys adding a new disk to a bookie and upgrading its
> *Cookie*.
> Adding a brand new disk would be quite easy. But if we want to remove a disk
> or replace a disk, it isn't trivial. BOOKKEEPER-201 would take care of
> removing/replace a disk.
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