[Bugs] [Bug 1288352] Few snapshot creation fails with pre-validation failed message on tiered volume.

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1288352



--- Comment #11 from Vijay Bellur <vbellur at redhat.com> ---
COMMIT: http://review.gluster.org/13199 committed in release-3.7 by Dan
Lambright (dlambrig at redhat.com) 
------
commit 92d08cee31044af4b792ed283011bf7287b00883
Author: Dan Lambright <dlambrig at redhat.com>
Date:   Mon Dec 28 10:57:53 2015 -0500

    cluster/tier: allow db queries to be interruptable

    A query to the database may take a long time if the database
    has many entries. The tier daemon also sends IPC calls to the
    bricks which can run slowly, espcially in RHEL6. While it is
    possible to track down each such instance, the snapshot
    feature should not be affected by database operations. It requires
    no migration be underway. Therefore it is okay to pause tiering
    at any time except when DHT is moving a file.  This fix implements
    this strategy by monitoring when control passes to DHT to
    migrate a file using the GF_XATTR_FILE_MIGRATE_KEY trigger. If it
    is not, the pause operation is successful.

    > Change-Id: I21f168b1bd424077ad5f38cf82f794060a1fabf6
    > BUG: 1287842
    > Signed-off-by: Dan Lambright <dlambrig at redhat.com>
    > Reviewed-on: http://review.gluster.org/13104
    > Reviewed-by: Joseph Fernandes
    > Tested-by: Gluster Build System <jenkins at build.gluster.com>
    Signed-off-by: Dan Lambright <dlambrig at redhat.com>

    Change-Id: I667e0af24eaa66afefa860c4d73b324e4f39b997
    BUG: 1288352
    Signed-off-by: Dan Lambright <dlambrig at redhat.com>
    Reviewed-on: http://review.gluster.org/13199
    Smoke: Gluster Build System <jenkins at build.gluster.com>
    NetBSD-regression: NetBSD Build System <jenkins at build.gluster.org>
    CentOS-regression: Gluster Build System <jenkins at build.gluster.com>

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