Bug 1492589 – [RGW:NFS]: Writing a large size file fails on the NFS mount

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Bug 1492589 - [RGW:NFS]: Writing a large size file fails on the NFS mount

Summary:	[RGW:NFS]: Writing a large size file fails on the NFS mount

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Ceph Storage
Classification:	Red Hat
Component:	RGW (Show other bugs)
Sub Component:
Version:	3.0
Hardware:	Unspecified Unspecified

Priority	high Severity unspecified
Target Milestone:	rc
Target Release:	3.1
Assigned To:	Matt Benjamin (redhat)
QA Contact:	vidushi
Docs Contact:	Bara Ancincova

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:	1494421 1584264
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Reported:	2017-09-18 05:19 EDT by vidushi
Modified:	2018-10-24 15:56 EDT (History)
CC List:	12 users (show)

See Also:
Fixed In Version:	RHEL: ceph-12.2.5-35.el7cp Ubuntu: ceph_12.2.5-20redhat1xenial
Doc Type:	Known Issue
Doc Text:	.The Ceph Object Gateway requires applications to write sequentially The Ceph Object Gateway requires applications to write sequentially from offset 0 to the end of a file. Attempting to write out of order causes the upload operation to fail. To work around this issue, use utilities like `cp`, `cat`, or `rsync` when copying files into NFS space. Always mount with the `sync` option.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2018-09-26 14:16:44 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2018:2819	None	None	None	2018-09-26 14:18 EDT

Groups: None (edit)

Description vidushi 2017-09-18 05:19:53 EDT

Description of problem:
Cannot write a large size file on the NFS mount. Tried writing 500Mb but it fails with IO error.
[root@host mnt2]# dd if=/dev/urandom of=test2/file1  bs=10M count=50
dd: closing output file ‘test2/file1’: Input/output error
[root@host mnt2]# 
Considering S3 has a limit of 5GB in a single PUT operation, what is the maximum file size we can directly write in a directory in the NFS mount? 

Version-Release number of selected component (if applicable):
ceph version 12.2.0-2.el7cp
nfs-ganesha-rgw-2.5.2-2.el7cp.x86_64
nfs-ganesha-2.5.2-2.el7cp.x86_64

How reproducible:
3/3

Steps to Reproduce:
1. Configure NFS server on an RGW  and configure NFS client and mount share with NFSv3.
2. Create a file and write 500Mb of data
3. Operation fails with IO error

Actual results:


Expected results:

Comment 26 errata-xmlrpc 2018-09-26 14:16:44 EDT

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:2819

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