[Gluster-users] Big I/O or gluster proccess problem

[Tejas N. Bhise]

Ran,

Can you please elaborate on - "2 servers in distrebute mod , each has 1 TB brick that replicate to each other using DRBD" 
Also, how many drives do you have and what does iowait look like when you write a big file ? Tell us more about the configs of your servers, share the volume files.

Regards,
Tejas.

----- Original Message -----
From: "Ran" <smtp.test61 at gmail.com>
To: Gluster-users at gluster.org
Sent: Thursday, May 20, 2010 4:49:52 PM
Subject: [Gluster-users] Big I/O or gluster proccess problem

Hi all ,
Our problem is simple but quite critical i posted few mounts ago regarding
that issue and there was a good responses but not a fix
What happen is that gluster stack when there is a big wrtite to it .
For example  time dd if=/dev/zero of=file bs=10240 count=1000000
OR mv 20gig_file.img into gluster mount .
When that happen the all storage freezes for the entire proccess , mails ,
few vps's , simple dir etc..
Our setup is quite simple at this point , 2 servers in distrebute mod , each
has 1 TB brick that replicate to each other using DRBD .
iv monitored closly everting on this big writes and noticed that its not mem
, proc , network problem .
Iv also checked the same setup with simple NFS and its not happening there .
Anyone has any idea on how to fix this , if you cant write big files into
gluster without making the storage unfunctional then you cant realy do
anything .

Please advise ,

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