[Bugs] [Bug 1235601] New: tar on a glusterfs mount displays "file changed as we read it" even though the file was not changed

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1235601

            Bug ID: 1235601
           Summary: tar on a glusterfs mount displays "file changed as we
                    read it" even though the file was not changed
           Product: GlusterFS
           Version: 3.6.3
         Component: replicate
          Keywords: Triaged
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: kdhananj at redhat.com
                CC: bugs at gluster.org, gluster-bugs at redhat.com,
                    pkarampu at redhat.com
        Depends On: 1235216
            Blocks: 1202842



+++ This bug was initially created as a clone of Bug #1235216 +++

+++ This bug was initially created as a clone of Bug #1223757 +++

+++ This bug was initially created as a clone of Bug #1212842 +++

Description of problem:
-----------------------

tar command on the glusterfs mount point is seen to report the following error
on some files -

tar: ./linux-3.19.4/tools/perf/scripts/perl: file changed as we read it

There were no changes made to files while the tar command was in progress.
Reproducible on 1x2 volume. Unable to reproduce on a pure distribute volume.

See below for volume information -

# gluster v i test

Volume Name: test
Type: Replicate
Volume ID: f844808b-0d2e-40ce-9331-eddfb2b72855
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: vm5-rhsqa13:/rhs/brick5/b1
Brick2: vm6-rhsqa13:/rhs/brick5/b1
Options Reconfigured:
cluster.consistent-metadata: on
features.quota: on
features.uss: enable
client.event-threads: 4
server.event-threads: 5

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

glusterfs-3.7dev-0.965.git2788ddd.el6.x86_64

How reproducible:
------------------

Tried a couple of times, on 6x3 and 1x2 volumes. Successfully reproducible.


Steps to Reproduce:
--------------------

1. Create replicate or distributed-replicate volume and set the option
`cluster.consistent-metadata' to on. Start the volume.
2. Fuse mount the volume.
3. Download linux kernel and untar it on the mount point.
4. Compile the kernel and try to create a tar.

Actual results:
----------------

While the tar command is running, the above described messages are seen for
many files.

Expected results:
------------------

tar is expected to run successfully.

--- Additional comment from Krutika Dhananjay on 2015-06-24 06:21:55 EDT ---

http://review.gluster.org/#/c/11373/

--- Additional comment from Anand Avati on 2015-06-24 20:11:03 EDT ---

COMMIT: http://review.gluster.org/11373 committed in master by Vijay Bellur
(vbellur at redhat.com) 
------
commit 4c751009f668910a734cd400c10e8b3bdd6360a1
Author: Krutika Dhananjay <kdhananj at redhat.com>
Date:   Wed Jun 24 08:02:51 2015 +0530

    cluster/afr: Pick gfid from poststat during fresh lookup for read child
calculation

    Change-Id: I12c1e4f67f4ec4affbe13d7daf871044a8a2a12e
    BUG: 1235216
    Signed-off-by: Krutika Dhananjay <kdhananj at redhat.com>
    Reviewed-on: http://review.gluster.org/11373
    Reviewed-by: Pranith Kumar Karampuri <pkarampu at redhat.com>
    Tested-by: NetBSD Build System <jenkins at build.gluster.org>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1202842
[Bug 1202842] [TRACKER] RHGS 3.1 Tracker BZ
https://bugzilla.redhat.com/show_bug.cgi?id=1235216
[Bug 1235216] tar on a glusterfs mount displays "file changed as we read
it" even though the file was not changed
-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the assignee for the bug.