Bug 1024418 - RFE: Add ability to decrease replica count on active volumes
RFE: Add ability to decrease replica count on active volumes
Product: Red Hat Gluster Storage
Classification: Red Hat
Component: glusterfs (Show other bugs)
Unspecified Unspecified
high Severity high
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Assigned To: Bug Updates Notification Mailing List
: FutureFeature
Depends On:
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Reported: 2013-10-29 11:46 EDT by Wesley Duffee-Braun
Modified: 2014-10-10 15:00 EDT (History)
3 users (show)

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Fixed In Version:
Doc Type: Enhancement
Doc Text:
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Last Closed: 2014-10-10 15:00:30 EDT
Type: Bug
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RHEL 7.3 requirements from Atomic Host:
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Description Wesley Duffee-Braun 2013-10-29 11:46:11 EDT
Description of problem:
Replica counts cannot be decreased on active volumes

Version-Release number of selected component (if applicable):
RHS 2.1

How reproducible:

Steps to Reproduce:
1. Create a 3-way replica volume

[root@rhs21-01vm ~]# gluster volume info my-threerep-volume
Volume Name: my-threerep-volume
Type: Replicate
Volume ID: 028f61c7-6fd1-4771-af05-a925b2972e64
Status: Started
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Brick1: rhs21-01vm:/bricks/brick5
Brick2: rhs21-02vm:/bricks/brick6
Brick3: rhs21-03vm:/bricks/brick7

2. Attempt to remove a brick and change replica count to 2

[root@rhs21-01vm ~]# gluster volume remove-brick my-threerep-volume replica 2 rhs21-02vm:/bricks/brick6

Actual results:

Removing brick(s) can result in data loss. Do you want to Continue? (y/n) y
volume remove-brick commit force: failed: Removing brick from a replicate volume is not allowed

Expected results:
brick removed, volume replica count updated to 2
Comment 3 Sayan Saha 2014-10-10 15:00:30 EDT
This feature is not widely requested. Users do not usually modify their replication level dynamically. Hence closing it as this is a low priority.

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