[Bugs] [Bug 1261742] New: Tier: glusterd crash when trying to detach , when hot tier is having exactly one brick and cold tier is of replica type

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1261742

            Bug ID: 1261742
           Summary: Tier: glusterd crash when trying to detach , when hot
                    tier is having exactly one brick and cold tier is of
                    replica type
           Product: GlusterFS
           Version: 3.7.5
         Component: tiering
          Keywords: Triaged
          Severity: medium
          Priority: medium
          Assignee: bugs at gluster.org
          Reporter: rkavunga at redhat.com
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org
        Depends On: 1261741



+++ This bug was initially created as a clone of Bug #1261741 +++

Description of problem:
glusterd crash when trying to detach , when hot tier is having exactly one
brick and cold tier with two bricks. This because of wrong calculation of
subvols.


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

mainline

How reproducible:

100%

Steps to Reproduce:
1.create a replica 2 volume with two bricks
2.attach a tier with one brick
3.detach the tier

Actual results:

crash

Expected results:

detach should success.

Additional info:

--- Additional comment from Vijay Bellur on 2015-09-10 02:04:29 EDT ---

REVIEW: http://review.gluster.org/12145 (tier/glusterd : Disable subvol match
check during detach tier) posted (#1) for review on master by mohammed rafi  kc
(rkavunga at redhat.com)


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1261741
[Bug 1261741] Tier: glusterd crash when trying to detach , when hot tier is
having exactly one brick and cold tier is of replica type
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