Ocfs2 users - May 2011 - Is OCFS2 1.4.7 Prod Ready ?

Hello Ladies and Gents ..

First time poster ..

I have been experiencing several issues with unexplained Fencing and 
silly mount/unmount errors With
Version 1.4.7 on UEK (Red Hat Enterprise Linux Server release 5.3) 
running under kernel 2.6.18-128.el5
With ocfs2console-1.6.3-2.el5,ocfs2-tools-1.6.3-2.el5 & 
ocfs2-2.6.18-128.el5-1.4.7-1.el5 RPM Packages.

You See, the problem is that I was going to deploy OCFS2 in about 32 
nodes for general purpose "file/Middle Tier Application/RMAN Backup 
repository" sharing (since NFS is too slow, and GFS only supports 16 nodes)

When doing a web search for ocfs2 production ready I ran across this page

http://geekscrap.com/2010/01/what-evil-lurks-in-ocfs2/ and it scared the 
living daylight out of me.
/
(Not enough disk space,quorum needing manual restore,several racing 
conditions in file locking that lead to corruption,fsck taking forver 
after having to run it manually, in some cases leading to corruption and 
dead unrecoverable FileSystems ) /

So I have some questions:

1.- Are some/all of these issues resolved ?,
2.- If your Job depended on it would you use OCFS2 Now , using the same 
version/release
3.- Can we expect to see Release 1.6 without these bugs to be available @
     http://oss.oracle.com/projects/ocfs2/files/RedHat/RHEL5/x86_64/ Soon.
4.- if 1.6 Is available in RPM form, stable and downloadable .. Where is 
it ?

So the bottom line question is .. Should I look at alternative Cluster 
FileSystems or should I take the plunge once 1.6 is made available 
without these major bugs ? (or even now with Rel 1.4.7-1) ??

Cheers.

Flames welcome ;)

Thanks.



-- 

Adrian Salaices
Sr. Linux Administrator
Tomkins Building Products
972-943-6104 Tel

	

	

	

	


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Hello Mr. Salaices,
> 1.- Are some/all of these issues resolved ?,
Some of them are solved in 1.6 and some are bogus, like the issue 4 --
the OCFS2 does not officially support SAMBA shares, so reporting
problems with it is pointless.
> 2.- If your Job depended on it would you use OCFS2 Now , using the
> same version/release
My Job depends on it and we have two clusters deployed in production and
are planning the third. They are small, but with heavy IO load, mainly
e-mail.

Cluster 1 (running since 01/2008):
OCFS2 1.4.4
two nodes
SuSE Enterprise 10SP3
Storage: Dell/EMC AX-100 - fibre channel - 800 GiB volume
Will be upgraded to CentOS 5.5 with OCFS 1.6.3

Cluster 2 (running since 11/2010):
OCFS2 1.6.3
two node (two more underway)
CentOS 5.5 + Unbreakable Kernel
Storage: Dell EqualLogic VX4000 - iSCSI - 3.6 TiB volume

Cluster 3 (planned):
OCFS2 1.6.x
four node
CentOS 5.5 + Unbreakable Kernel
Storage: Unknown - iSCSI - unknown size
> 3.- Can we expect to see Release 1.6 without these bugs to be
> available @
> http://oss.oracle.com/projects/ocfs2/files/RedHat/RHEL5/x86_64/ Soon.
OCFS2 1.6 fixes a lot of bugs, including the "filesystem full"
problem.
Take a look at the user guide:
http://oss.oracle.com/projects/ocfs2/dist/documentation/v1.6/ocfs2-1_6-usersguide.pdf
> 4.- if 1.6 Is available in RPM form, stable and downloadable .. Where
> is it ?
Yes, it is. You can download it from the public yum repository:
http://public-yum.oracle.com/ but I can't tell for sure if it works on
RHEL 5.3, because the kernel is available for RHEL/OL/CentOS 5.5,
5.6 and 6.0.

Regards,
-- 
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