[Gluster-users] GlusterFS Changing Hash of Large Files?

Ravishankar N ravishankar at redhat.com
Sat Jul 27 06:04:48 UTC 2019

On 26/07/19 6:50 PM, Matthew Evans wrote:
> I've got a new glusterfs 4 node replica cluster running under CentOS 
> 7.  All hosts are backed by SSD drives and are connected to a 1Gbps 
> Ethernet network. 3 nodes are running on CentOS 7 under ESXi on the 
> same physical host, 1 is running on CentOS 7 under Hyper-V. I use this 
> for my docker swarm persistent storage and all seems to work well.
> Yesterday however, I copied a 4GB .ISO file to my volume for a friend 
> to download. I noticed the SHA256 hash of the ISO was altered. I 
> downloaded a fresh copy to my desktop, verified the hash, scp'd it to 
> the local glusterfs host storage and again, re-verified the hash. The 
> moment I copied it to my glusterfs volume, the file hash changed. When 
> my friend downloaded the ISO, his hash matched changed hash.
Can you provide the below details?
- glusterfs version

-`gluster volume info`

> I am new to glusterfs, having deployed this as my first cluster ever 
> about a week ago. Can someone help me work through why this file's 
> hash would be changing?
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