See the ocfs2 FAQ <https://oss.oracle.com/projects/ocfs2/dist/documentation/v1.2/ocfs2_faq.html> - point #32 explains cluster size (the "-C 128K" parameter in your mkfs.ocfs2), hence the 128k file size of smaller files. The FAQ was written for OCFS2 1.2, but is still largely correct for 1.8. See also the man pages <https://oss.oracle.com/projects/ocfs2/dist/documentation/v1.8/ocfs2-1_8_2-manpages.pdf> for 1.8.

Note that extN filesystems only allow sharing via NFS. I assume you use ocfs2 because you want the benefits of a cluster filesystem.

Regards,
Richard.

On 18/03/2015 19:00, ocfs2-users-requ...@oss.oracle.com wrote:
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Today's Topics:

    1. Re: size increase (Zhen Ren)
    2. Re: size increase (Umarzuki Mochlis)
    3. Re: [Ocfs2-devel]  size increase (Umarzuki Mochlis)
    4. Re: [Ocfs2-devel] size increase (Sunil Mushran)


----------------------------------------------------------------------

Message: 1
Date: Tue, 17 Mar 2015 20:05:20 -0600
From: "Zhen Ren" <z...@suse.com>
Subject: Re: [Ocfs2-users] size increase
To: "Umarzuki Mochlis" <umarz...@gmail.com>,
        <ocfs2-de...@oss.oracle.com>,     <ocfs2-users@oss.oracle.com>
Message-ID: <55094de0020000d400003...@relay2.provo.novell.com>
Content-Type: text/plain; charset=US-ASCII

Hi Umarzuki,
1) Does it always occur, or sometime?

2) Could you give more info to reproduce this issue?

3) And could you have a try on ext3? Frankly,most of suse people (if I don't 
make a mistake) use ext3.

Also,I add the devel mail list. Hope experts there can help.

--
Best regards,
Eric, Ren
HA team, SUSE


I noticed a few folders copied over from ext4 partition to ocfs2
partition increased it total size to more than double.
Any document explaining this that I could refer to? _______________________________________________
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Ocfs2-users@oss.oracle.com
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------------------------------

Message: 2
Date: Wed, 18 Mar 2015 10:50:24 +0800
From: Umarzuki Mochlis <umarz...@gmail.com>
Subject: Re: [Ocfs2-users] size increase
To: Zhen Ren <z...@suse.com>
Cc: ocfs2-users@oss.oracle.com, ocfs2-de...@oss.oracle.com
Message-ID:
        <CAHW9mbxD7DhZt=eed50wj4unshkrxjxdaxhg_8cosfcqujw...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

1) yes

even 36K text html file in ext4 became 128K inside ocfs2

2) I installed ocfs-tools on Ubuntu 14.04 amd64

A LUN added to a newly created LVM group, so no other physical volume
added other than this one and formatted as ocfs2 with below command

sudo mkfs.ocfs2 -b 4K -C 128K -L "Web Cluster" /dev/webvg/weblv

/dev/webvg/weblv mounted on /var/www

I'll check with ext3 later

2015-03-18 10:05 GMT+08:00 Zhen Ren <z...@suse.com>:
Hi Umarzuki,
1) Does it always occur, or sometime?

2) Could you give more info to reproduce this issue?

3) And could you have a try on ext3? Frankly,most of suse people (if I don't 
make a mistake) use ext3.

Also,I add the devel mail list. Hope experts there can help.

--
Best regards,
Eric, Ren
HA team, SUSE



------------------------------

Message: 3
Date: Wed, 18 Mar 2015 11:03:32 +0800
From: Umarzuki Mochlis <umarz...@gmail.com>
Subject: Re: [Ocfs2-users] [Ocfs2-devel]  size increase
To: xuejiu...@huawei.com
Cc: ocfs2-users@oss.oracle.com, ocfs2-de...@oss.oracle.com
Message-ID:
        <cahw9mbx73auenu-cqo++2kxbor+hmv_glr-taxbrjfhp6sy...@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

Hi,

What I meant by total size is output of 'du -hs'

I can see output of fdisk on mpath1 of ocfs2 LUN similar to logical
volume of ext4 partition (255 head & 63 sectors)

It is a 2 nodes ocfs cluster.

2015-03-18 10:50 GMT+08:00 Xue jiufei <xuejiu...@huawei.com>:
Hi Umarzuki,
What is the meaning of total size, file size or disk usage?
If you means the disk usage, I think maybe the difference of
cluster size(the minimum allocation unit) is the case.
Have you notice the cluster size or block size of your ocfs2
and ext4 filesystem?

Thanks,
Xuejiufei



------------------------------

Message: 4
Date: Tue, 17 Mar 2015 20:26:49 -0700
From: Sunil Mushran <sunil.mush...@gmail.com>
Subject: Re: [Ocfs2-users] [Ocfs2-devel] size increase
To: Umarzuki Mochlis <umarz...@gmail.com>
Cc: xuejiu...@huawei.com, ocfs2-users@oss.oracle.com,
        ocfs2-de...@oss.oracle.com
Message-ID:
        <caeeishx-u+t+5j218ff58geujpf4rdjls4ipr1xbuhpptn0...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

This is because you are specifying a 128k cluster size. Refer to man
mkfs.ocfs2 for more.
On Mar 17, 2015 8:04 PM, "Umarzuki Mochlis" <umarz...@gmail.com> wrote:

Hi,

What I meant by total size is output of 'du -hs'

I can see output of fdisk on mpath1 of ocfs2 LUN similar to logical
volume of ext4 partition (255 head & 63 sectors)

It is a 2 nodes ocfs cluster.

2015-03-18 10:50 GMT+08:00 Xue jiufei <xuejiu...@huawei.com>:
Hi Umarzuki,
What is the meaning of total size, file size or disk usage?
If you means the disk usage, I think maybe the difference of
cluster size(the minimum allocation unit) is the case.
Have you notice the cluster size or block size of your ocfs2
and ext4 filesystem?

Thanks,
Xuejiufei

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