[Bugs] [Bug 1252586] Legacy files pre-existing tier attach must be promoted

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1252586



--- Comment #7 from Vijay Bellur <vbellur at redhat.com> ---
COMMIT: http://review.gluster.org/11828 committed in master by Dan Lambright
(dlambrig at redhat.com) 
------
commit f6618acd4f7642dab19445e35cf2c7fbc8244a5e
Author: Joseph Fernandes <josferna at redhat.com>
Date:   Tue Aug 4 20:38:06 2015 +0530

    tier/ctr: CTR DB named lookup heal of cold tier during attach tier

    Heal hardlink in the db for already existing data in the cold
    tier during attach tier. i.e during fix layout do lookup to files
    in the cold tier.

    CTR xlator on the  brick/server side does db update/insert of the hardlink
on a namelookup.
    Currently the namedlookup is done synchronous to the fixlayout that is
    triggered by attach tier. This is not performant, adding more time to
    fixlayout. The performant approach is record the hardlinks on a compressed
    datastore and then do the namelookup asynchronously later, giving the ctr
db
    eventual consistency

    Change-Id: I4ffc337fffe7d447804786851a9183a51b5044a9
    BUG: 1252586
    Signed-off-by: Joseph Fernandes <josferna at redhat.com>
    Reviewed-on: http://review.gluster.org/11828
    Tested-by: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Dan Lambright <dlambrig at redhat.com>
    Tested-by: Dan Lambright <dlambrig at redhat.com>

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