[Bugs] [Bug 1291557] Data Tiering:File create terminates with "Input/output error" as split brain is observed

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1291557



--- Comment #7 from Vijay Bellur <vbellur at redhat.com> ---
COMMIT: http://review.gluster.org/12968 committed in release-3.7 by Pranith
Kumar Karampuri (pkarampu at redhat.com) 
------
commit 195548f55b09bf71db92929b7b734407b863093c
Author: Ashish Pandey <aspandey at redhat.com>
Date:   Thu Nov 26 14:35:49 2015 +0530

    storage/posix: Implement .unlink directory

    Problem: For EC volume, If a file descriptor is open and
    file has been unlinked, any further write on that fd will
    fail. When a write request comes, EC internally reads some
    blocks using anonymous fd. This read will fail as the file
    has already been unlinked.

    Solution: To solve this issue, we are using .unlink directory
    to keep track of unlinked file. If a file is to be unlinked
    while its fd is open, move this to .unlink directory and unlink
    it from .glusterfs and real path. Once all the fd will be closed,
    remove this entry form .unlink directory.

    master -
    http://review.gluster.org/#/c/12816/

    Change-Id: I8344edb0d340bdb883dc46458c16edbc336916b9
    BUG: 1291557
    Signed-off-by: Ashish Pandey <aspandey at redhat.com>
    Reviewed-on: http://review.gluster.org/12968
    Reviewed-by: Pranith Kumar Karampuri <pkarampu at redhat.com>
    Tested-by: Pranith Kumar Karampuri <pkarampu at redhat.com>
    Smoke: Gluster Build System <jenkins at build.gluster.com>
    CentOS-regression: Gluster Build System <jenkins at build.gluster.com>
    NetBSD-regression: NetBSD Build System <jenkins at build.gluster.org>

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