Bug 1577845

Summary:	Geo-rep: faulty session due to OSError: [Errno 95] Operation not supported
Product:	[Community] GlusterFS	Reporter:	Kotresh HR <khiremat>
Component:	geo-replication	Assignee:	Kotresh HR <khiremat>
Status:	CLOSED CURRENTRELEASE	QA Contact:
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	3.12	CC:	amukherj, bugs, csaba, mmuir, olim, rhinduja, rhs-bugs, storage-qa-internal
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-3.12.10	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1567209	Environment:
Last Closed:	2018-10-23 14:41:47 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:	1565399, 1567209
Bug Blocks:

Comment 1 Kotresh HR 2018-05-14 09:27:58 UTC

Description:

geo-rep sessions ending up faulty due to the following errors:

ssh%3A%2F%2Froot%40171.179.248.2%3Agluster%3A%2F%2F127.0.0.1%3Aamm-remote.log:OSError: [Errno 95] Operation not supported: '.gfid/1d1cad0c-095b-4150-ac7e-734054cd12af'
ssh%3A%2F%2Froot%40171.179.248.2%3Agluster%3A%2F%2F127.0.0.1%3Aamm-remote.log:OSError: [Errno 95] Operation not supported: '.gfid/0218b459-0a04-4466-9afb-8f6eba78f442'

Release version:
3.12

How often does this hit:
Always

Problem:
Geo-rep is not proceeding

Expectation:
Geo-rep should not halt

Comment 2 Kotresh HR 2018-05-14 09:36:38 UTC

https://review.gluster.org/#/c/20017/

Comment 3 Worker Ant 2018-05-14 10:58:09 UTC

REVISION POSTED: https://review.gluster.org/20017 (geo-rep: Fix syncing of symlink) posted (#3) for review on release-3.12 by Kotresh HR

Comment 4 Worker Ant 2018-05-14 10:58:17 UTC

REVIEW: https://review.gluster.org/20017 (geo-rep: Fix syncing of symlink) posted (#3) for review on release-3.12 by Kotresh HR

Comment 5 Worker Ant 2018-06-11 10:17:58 UTC

COMMIT: https://review.gluster.org/20017 committed in release-3.12 by "jiffin tony Thottan" <jthottan> with a commit message- geo-rep: Fix syncing of symlink

Problem:
If symlink is created on master pointing
to current directory (e.g symlink -> ".") with
non root uid or gid, geo-rep worker crashes
with ENOTSUP.

Cause:
Geo-rep creates the symlink on slave and
fixes the uid and gid using chown cmd.
os.chown dereferences the symlink which is
pointing to ".gfid" which is not supported.
Note that geo-rep operates on aux-gfid-mount
(e.g. "/mnt/.gfid/<gfid-of-symlink-file>").

Solution:
The uid or gid change is acutally on symlink
file. So use os.lchown, i.e, don't deference.

Backport of 
> BUG: 1567209
> Patch: https://review.gluster.org/20017

BUG: 1577845
fixes: bz#1577845
Change-Id: I63575fc589d71f987bef1d350c030987738c78ad
Signed-off-by: Kotresh HR <khiremat>

Comment 6 Shyamsundar 2018-10-23 14:41:47 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-3.12.10, please open a new bug report.

glusterfs-3.12.10 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] https://lists.gluster.org/pipermail/announce/2018-May/000099.html
[2] https://www.gluster.org/pipermail/gluster-users/