[Bugs] [Bug 1291566] first file created after hot tier full fails to create, but gets database entry and later ends up as a stale erroneous file (file with ???????????)

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https://bugzilla.redhat.com/show_bug.cgi?id=1291566



--- Comment #8 from nchilaka <nchilaka at redhat.com> ---
Following is my finding on the latest build(where the fix is supposed to be
availbale):[root at zod dummy]# rpm -qa|grep gluster
glusterfs-api-3.7.5-13.el7rhgs.x86_64
glusterfs-client-xlators-3.7.5-13.el7rhgs.x86_64
glusterfs-server-3.7.5-13.el7rhgs.x86_64
glusterfs-3.7.5-13.el7rhgs.x86_64
glusterfs-cli-3.7.5-13.el7rhgs.x86_64
glusterfs-debuginfo-3.7.5-12.el7rhgs.x86_64
glusterfs-libs-3.7.5-13.el7rhgs.x86_64
glusterfs-fuse-3.7.5-13.el7rhgs.x86_64
[root at zod dummy]# 


I used the same steps to validate and found the following observations/issues:
(refer the steps mentioned at the beginning) 
1) at step 3 and 4, now when I create a file and it exceeds the disk capacity
previously it used to fail out after the disk limit is hit saying input/output
error, But now I don't see that happening, instead the mount point hangs there.
A CLEAR CASE OF REGRESSION

2)Keeping the state as it is, I opened another terminal of same client and now
tried step 5  and following is what i see:
  a) the database entry is made for the file even though file create fails as
below:
[root at rhs-client1 bztest]# touch x1
touch: cannot touch ‘x1’: No space left on device
[root at rhs-client1 bztest]# ls
gogy5  gogy7  gogy8  gony  leg1  leg2  leg3  leg4  leg5  new1  new2  new3  new4
 tile1  tile2  tile3  tile4  x10  x2  x3  x4  x5  x6  x7  x8  x9

====>database entry is there <========================

>>>>>>>>>>>> HOTBRICK#2 <<<<<<<<==
cd1833b2-abfe-446a-8090-87abba9a7a6c|1450961884|272248|0|0|0|0|0|0|0|0
de8c1aad-8b0f-46dd-8890-9c6af4588b5e|1450962132|339551|0|0|0|0|0|0|0|0
5ba281ad-e194-4d75-a0b3-f68bd409020a|1450962204|62682|0|0|0|0|0|0|0|0
cd1833b2-abfe-446a-8090-87abba9a7a6c|00000000-0000-0000-0000-000000000001|new1|0|0
de8c1aad-8b0f-46dd-8890-9c6af4588b5e|00000000-0000-0000-0000-000000000001|x2|0|0
5ba281ad-e194-4d75-a0b3-f68bd409020a|00000000-0000-0000-0000-000000000001|x1|0|0
###############################
Thu Dec 24 18:37:48 IST 2015
/dummy/brick101/bztest_hot:



b)however, I don't see the file getting created.


Conclusion: It is a partial fix

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