Bug 1396952

Summary:	I/O errors on FUSE mount point when reading and writing from 2 clients
Product:	[Community] GlusterFS	Reporter:	Poornima G <pgurusid>
Component:	md-cache	Assignee:	Poornima G <pgurusid>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	mainline	CC:	amukherj, bugs, ksandha, rhinduja, rhs-bugs, rjoseph, sbhaloth, storage-qa-internal
Target Milestone:	---	Keywords:	Triaged
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-3.10.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1393758
Clones:	1399446 (view as bug list)		Environment:
Last Closed:	2017-03-06 17:35:27 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:	1393758
Bug Blocks:	1399446

Comment 1 Worker Ant 2016-11-21 09:35:39 UTC

REVIEW: http://review.gluster.org/15892 (afr: Fix the EIO that can occur in afr_inode_refresh as a result      of cache invalidation(upcall).) posted (#1) for review on master by Poornima G (pgurusid)

Comment 2 Worker Ant 2016-11-28 04:40:41 UTC

REVIEW: http://review.gluster.org/15892 (afr: Fix the EIO that can occur in afr_inode_refresh as a result      of cache invalidation(upcall).) posted (#2) for review on master by Poornima G (pgurusid)

Comment 3 Worker Ant 2016-11-28 05:03:16 UTC

REVIEW: http://review.gluster.org/15892 (afr: Fix the EIO that can occur in afr_inode_refresh as a result      of cache invalidation(upcall).) posted (#3) for review on master by Poornima G (pgurusid)

Comment 4 Worker Ant 2016-11-29 04:10:27 UTC

COMMIT: http://review.gluster.org/15892 committed in master by Pranith Kumar Karampuri (pkarampu) 
------
commit 570aefeb280e53e98cb5060cf384f1d74379a521
Author: Poornima G <pgurusid>
Date:   Mon Nov 21 11:49:35 2016 +0530

    afr: Fix the EIO that can occur in afr_inode_refresh as a result
         of cache invalidation(upcall).
    
    Issue:
    ------
    When a cache invalidation is recieved as a result of changing
    pending xattr, the read_subvol is reset. Consider the below chain
    of execution:
    
    CHILD_DOWN
    ...
    afr_readv
    ...
    afr_inode_refresh
    ...
    afr_inode_read_subvol_reset <- as a result of pending xattr set by
                                   some other client GF_EVENT_UPCALL will
                                   be sent
    afr_refresh_done -> this results in an EIO, as the read subvol was
                        reset by the end of the afr_inode_refresh
    
    Solution:
    ---------
    When GF_EVENT_UPCALL is recieved, instead of resetting read_subvol,
    set a variable need_refresh in inode_ctx, the next time some one
    starts a txn, along with event gen, need_rrefresh also needs to
    be checked.
    
    Change-Id: Ifda21a7a8039b8874215e1afa4bdf20f7d991b58
    BUG: 1396952
    Signed-off-by: Poornima G <pgurusid>
    Reviewed-on: http://review.gluster.org/15892
    Reviewed-by: Ravishankar N <ravishankar>
    Smoke: Gluster Build System <jenkins.org>
    NetBSD-regression: NetBSD Build System <jenkins.org>
    CentOS-regression: Gluster Build System <jenkins.org>
    Reviewed-by: Pranith Kumar Karampuri <pkarampu>

Comment 5 Shyamsundar 2017-03-06 17:35:27 UTC

This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-3.10.0, please open a new bug report.

glusterfs-3.10.0 has been announced on the Gluster mailinglists [1], packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist [2] and the update infrastructure for your distribution.

[1] http://lists.gluster.org/pipermail/gluster-users/2017-February/030119.html
[2] https://www.gluster.org/pipermail/gluster-users/