Bug 1358581

Summary: IO hangs after detach tier commit of nfs mount
Product: [Community] GlusterFS Reporter: Dan Lambright <dlambrig>
Component: tieringAssignee: bugs <bugs>
Status: CLOSED WONTFIX QA Contact: bugs <bugs>
Severity: urgent Docs Contact:
Priority: urgent    
Version: mainlineCC: bugs, nchilaka, rcyriac, rhinduja, sankarshan, smohan
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: tier-fuse-nfs-samba
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1282771 Environment:
Last Closed: 2018-11-02 08:13:46 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1282771, 1306930    
Bug Blocks:    

Comment 2 Amar Tumballi 2018-11-02 08:13:46 UTC
Patch https://review.gluster.org/#/c/glusterfs/+/21331/ removes tier functionality from GlusterFS. 

https://bugzilla.redhat.com/show_bug.cgi?id=1642807 is used as the tracking bug for this. Recommendation is to convert your tier volume to regular volume (either replicate, ec, or plain distribute) with "tier detach" command before upgrade, and use backend features like dm-cache etc to utilize the caching from backend to provide better performance and functionality.