[Bugs] [Bug 1457272] New: Old content on last node when using Cascade Geo Replication in a particular case

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1457272

            Bug ID: 1457272
           Summary: Old content on last node when using Cascade Geo
                    Replication in a particular case
           Product: GlusterFS
           Version: 3.10
         Component: geo-replication
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: guillaume.penin at sncf.fr
                CC: bugs at gluster.org



Description of problem:

Using a 3 nodes Cascade Geo Replication Setup (node1 => node2 => node3), file
content is never updated on node3 after modification on node1 in this
particular case :

- Use a shell redirection to modify file content
- File size is the same as before

File attributes (modification time for example) are however OK.

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

GlusterFS 3.10.2 on Ubuntu 16.04 LTS x86_64

How reproducible:

Always

Steps to Reproduce:
1. Create a file on node1 (/bin/date "+%s" >
/export/repos/.monitoring_timestamp), it will be correctly replicated on node2
and node3
2. Modify file content with the same command on node1, it will be correctly
replicated on node2 but not on node3.

Actual results:

Node 1 :
Content => 1496233967
ls => 11893925174562343327 -rw-r--r-- 1 root root 11 May 31 14:32
/export/repos/.monitoring_timestamp
Node 2 :
Content => 1496233967
ls = 11893925174562343327 -rw-r--r-- 1 root root 11 May 31 14:32
/export/repos/.monitoring_timestamp
Node 3 :
Content => 1496233801
ls => 11893925174562343327 -rw-r--r-- 1 root root 11 May 31 14:32
/export/repos/.monitoring_timestamp

Expected results:

Node 1 :
Content => 1496233967
ls => 11893925174562343327 -rw-r--r-- 1 root root 11 May 31 14:32
/export/repos/.monitoring_timestamp
Node 2 :
Content => 1496233967
ls = 11893925174562343327 -rw-r--r-- 1 root root 11 May 31 14:32
/export/repos/.monitoring_timestamp
Node 3 :
Content => 1496233967
ls => 11893925174562343327 -rw-r--r-- 1 root root 11 May 31 14:32
/export/repos/.monitoring_timestamp

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