Bug 1761907

Summary: Rebalance causing IO Error - File descriptor in bad state
Product: [Community] GlusterFS Reporter: Mohit Agrawal <moagrawa>
Component: distributeAssignee: Mohit Agrawal <moagrawa>
Status: CLOSED NEXTRELEASE QA Contact:
Severity: high Docs Contact:
Priority: unspecified    
Version: 6CC: bugs, moagrawa, nbalacha, pasik, rhs-bugs, sheggodu, storage-qa-internal, ubansal, vdas
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
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Story Points: ---
Clone Of: 1758432 Environment:
Last Closed: 2019-10-17 10:55:46 UTC Type: ---
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: 1758432    
Bug Blocks: 1696809, 1758579, 1761910, 1806996    

Comment 1 Mohit Agrawal 2019-10-15 14:37:29 UTC 
Hi,

Steps to reproduce 

1.Mounted a disperse volume
2.Started the a python script from 2 clients (one from /mnt/EC and another from /mnt/EC/dir1) to continues
  fd open/close in multiple threads
3.Added brick and started rebalance 
4.Rebalance has completed
5. Python script is getting failure "File descriptor in bad state" 

RCA:
Before merged this patch https://review.gluster.org/#/c/glusterfs/+/15804/ if fd 
is not opened client_fops sets anon fd without checking fd is anonymous or not so there was no issue 
in if fd is not opened before throwing any fop but after merged this patch CLIENT_GET_REMOTE_FD sets the errno to EBADFD if fd is not anonymous.In dht fop_cbks code path open fd only while errno is EBADF so need to handle EBADFD if any dht children xlator sets as an error if fd is not opened.

A patch is posted on upstream
https://review.gluster.org/#/c/glusterfs/+/23518/

Regards,
Mohit Agrawal
Comment 2 Worker Ant 2019-10-15 15:02:22 UTC 
REVIEW: https://review.gluster.org/23552 (dht: Rebalance causing IO Error - File descriptor in bad state) posted (#1) for review on release-6 by MOHIT AGRAWAL
Comment 3 Worker Ant 2019-10-17 10:55:46 UTC 
REVIEW: https://review.gluster.org/23552 (dht: Rebalance causing IO Error - File descriptor in bad state) merged (#2) on release-6 by hari gowtham