+++ This bug was initially created as a clone of Bug #1739426 +++

+++ This bug was initially created as a clone of Bug #1733935 +++

Description of problem:
    Problem:
    when a file needs to be re-opened O_APPEND and O_EXCL
    flags are not filtered in EC.
    
    - O_APPEND should be filtered because EC doesn't send O_APPEND below EC for
    open to make sure writes happen on the individual fragments instead of at the
    end of the file.
    
    - O_EXCL should be filtered because shd could have created the file so even
    without O_EXCL open should succeed.
    
    Fix:
    Filter out these two flags in reopen.


Version-Release number of selected component (if applicable):


How reproducible:
Found while reading code.

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

--- Additional comment from Amar Tumballi on 2019-07-30 05:25:19 UTC ---

https://review.gluster.org/#/c/glusterfs/+/23121/ posted.

--- Additional comment from Worker Ant on 2019-07-30 05:39:45 UTC ---

REVIEW: https://review.gluster.org/23121 (cluster/ec: Fix reopen flags to avoid misbehavior) merged (#4) on master by Pranith Kumar Karampuri

--- Additional comment from Worker Ant on 2019-08-09 10:10:36 UTC ---

REVIEW: https://review.gluster.org/23191 (cluster/ec: Fix reopen flags to avoid misbehavior) posted (#1) for review on release-7 by Pranith Kumar Karampuri