Bug 1225452

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

Removed one of the complete subvolume from (2x3) volume, which must have triggered the rebalance. Once rebalance status is shown as completed. Copied a file "/etc/hosts" to fuse mount and copied another file "/etc/hosts.allow" to nfs mount. 

file hosts is written on the available subvolume (which was not removed) but file hosts.allow is written on the subvolume which was removed. After this did a ls from fuse mount and observed a link file created on the available subvolume. 

Performed a commit after this, the removed subvolume is no longer part of the volume but it contains the actual file hosts.allow which is lost. And the available subvolume has a T file which errors in "Structure needs cleaning" 

[root@georep1 b1]# cd /rhs/brick1/b1/
[root@georep1 b1]# ls -lrt hosts.allow 
---------T. 2 root root 0 May 27 20:43 hosts.allow
[root@georep1 b1]# cd /rhs/brick2/b2/
[root@georep1 b2]# ls -lrt hosts.allow 
-rw-r--r--. 2 root root 370 May 27 20:43 hosts.allow
[root@georep1 b2]# gluster v info master
 
Volume Name: master
Type: Replicate
Volume ID: 7b933011-28da-48d7-90a0-40ac33102aae
Status: Started
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: 10.70.46.96:/rhs/brick1/b1
Brick2: 10.70.46.97:/rhs/brick1/b1
Brick3: 10.70.46.93:/rhs/brick1/b1
Options Reconfigured:
changelog.changelog: on
geo-replication.ignore-pid-check: on
geo-replication.indexing: on
performance.readdir-ahead: on
[root@georep1 b2]# 

[root@georep1 b2]# getfattr -n trusted.gfid -e hex -m . /rhs/brick1/b1/hosts.allow 
getfattr: Removing leading '/' from absolute path names
# file: rhs/brick1/b1/hosts.allow
trusted.gfid=0x70ad500ee72645a39fc3b54d88aa2cc7

[root@georep1 b2]# getfattr -n trusted.gfid -e hex -m . /rhs/brick2/b2/hosts.allow 
getfattr: Removing leading '/' from absolute path names
# file: rhs/brick2/b2/hosts.allow
trusted.gfid=0x70ad500ee72645a39fc3b54d88aa2cc7

[root@georep1 b2]# 


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

glusterfs-3.7.0-2.el6rhs.x86_64


How reproducible:
=================

Tried only once


Steps Carried:
==============
1. Created Master and Slave Cluster
2. Created Master and Slave Volume (2x3)
3. Created shared meta volume and mounted on all the master nodes
4. Created and Started geo-rep session between master and slave volume
5. Mount the master and slave volumes (Fuse & NFS)
6. From Fuse and NFS mount of master volume, create set of dirs and files
7. Once data creation is completed, wait for it to sync to slave
8. Verify using arequal that the data at master and slave matches
9. Remove a complete subvolume using "remove start" 
10. Wait for it to complete (Monitor using remove status"
11. Once completed, touch a file "rahul" from fuse and cp a file hosts from /etc/hosts to fuse mount of master
12. Copy a file /etc/hosts.allow to nfs mount of master
13. do a ls from fuse mount , it should list all the rahul,hosts,hosts.allow file
14. do a remove commit to remove the complete subvolume
15. geo-rep session goes to faulty with traceback "OSError: [Errno 117] Structure needs cleaning: '.gfid/70ad500e-e726-45a3-9fc3-b54d88aa2cc7'"

Checked in backend, the original file which is written from NFS is present in the decommissioned bricks and its T link file in the present available volume