[Bugs] [Bug 1272036] New: Data Tiering:getting failed to fsync on germany-hot-dht (Structure needs cleaning) warning

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1272036

            Bug ID: 1272036
           Summary: Data Tiering:getting failed to fsync on
                    germany-hot-dht (Structure needs cleaning) warning
           Product: GlusterFS
           Version: 3.7.5
         Component: tiering
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: nchilaka at redhat.com
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org



Description of problem:
======================

I am seeing getting this error when there is a failure to migrate file to hot
tier


In my case following is the way I probably hit it.

I had the following setup:

a hot tier 2x2 setup with each 1GB bricks
over a cold tier 2x2 of 500GB space

I then created files f1 of 700MB and then after f1 got demoted i created f2 of
700MB. When even f2 got demoted, I touched both files to get them promoted to
hot brick, and see what happens as it can accomodate only 1GB data.

I then saw  logs and found this error.





Version-Release number of selected component (if applicable):
==============================================================
glusterfs-server-3.7.5-0.18.gitb8ba012.el7.centos.x86_64




[2015-10-14 12:12:04.867032] W [dht-rebalance.c:1247:dht_migrate_file]
0-germany-tier-dht: /berlin.7: failed to fsync on germany-hot-dht (Structure
needs cleaning)
[2015-10-14 13:14:08.219263] W [dht-rebalance.c:1247:dht_migrate_file]
0-greece-tier-dht: /athens.10: failed to fsync on greece-hot-dht (Structure
needs cleaning)
[2015-10-14 13:28:25.074476] W [dht-rebalance.c:1247:dht_migrate_file]
0-greece-tier-dht: /athens.2: failed to fsync on greece-hot-dht (Structure
needs cleaning)
[2015-10-14 13:30:26.091045] W [dht-rebalance.c:1247:dht_migrate_file]
0-greece-tier-dht: /athens.10: failed to fsync on greece-hot-dht (Structure
needs cleaning)
[2015-10-14 13:34:26.703553] W [dht-rebalance.c:1247:dht_migrate_file]
0-greece-tier-dht: /athens.2: failed to fsync on greece-hot-dht (Structure
needs cleaning)
[2015-10-14 13:34:51.579771] W [dht-rebalance.c:1247:dht_migrate_file]
0-greece-tier-dht: /athens.3: failed to fsync on greece-hot-dht (Structure
needs cleaning)
[2015-10-14 13:38:26.134830] W [dht-rebalance.c:1247:dht_migrate_file]
0-greece-tier-dht: /athens.4: failed to fsync on greece-hot-dht (Structure
needs cleaning)
[2015-10-14 13:44:24.459860] W [dht-rebalance.c:1247:dht_migrate_file]
0-greece-tier-dht: /athens.3: failed to fsync on greece-hot-dht (Structure
needs cleaning)



attaching sos report:
Kindly refer to "greece" volume tier logs

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