Re: [Gluster-devel] [Gluster-users] Fwd: FileSize changing in GlusterNodes

[Anand Avati]

On Sun, Aug 25, 2013 at 11:23 PM, Vijay Bellur <address@hidden> wrote:

File size as reported on the mount point and the bricks can vary because of this code snippet in iatt_from_stat():

        {
                uint64_t maxblocks;

                maxblocks = (iatt->ia_size + 511) / 512;

                if (iatt->ia_blocks > maxblocks)
                        iatt->ia_blocks = maxblocks;
        }


This snippet was brought in to improve accounting behaviour for quota that would fail with disk file systems that perform speculative pre-allocation.

If this aides only specific use cases, I think we should make the behaviour configurable.

Thoughts?

-Vijay

This is very unlikely the problem. st_blocks field values do not influence md5sum behavior in any way. The file size (st_size) would, but both du -k and the above code snipped only deal with st_blocks.

Bobby, it would help if you can identify the mismatching file and inspect and see what is the difference between the two files?

Avati

 

-------- Original Message --------
Subject:        [Gluster-users] FileSize changing in GlusterNodes
Date:   Wed, 21 Aug 2013 05:35:40 +0000
From:   Bobby Jacob <address@hidden>
To:     address@hidden <address@hidden>



Hi,

When I upload files into the gluster volume, it replicates all the files
to both gluster nodes. But the file size slightly varies by (4-10KB),
which changes the md5sum of the file.

Command to check file size : du –k *. I’m using glusterFS 3.3.1 with
Centos 6.4

This is creating inconsistency between the files on both the bricks. ?
What is the reason for this changed file size and how can it be avoided. ?

Thanks & Regards,

*Bobby Jacob*




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