[Gluster-users] Performance and redundancy help

Smart Weblications GmbH - Florian Wiessner f.wiessner at smart-weblications.de
Tue Feb 23 11:43:37 UTC 2010


Hi Chad,

Am 23.02.2010 05:30, schrieb Chad:
> I finally got the servers transported 2000 miles, set-up, wired, and
> booted.
> Here are the vol files.
> Just to reiterate, the issues are slow performance on read/write, and
> clients hanging when 1 server goes down.

Yes, because you do server-side replication. Try client-side replication, then
you wouldn't need loadbalancers and the client will not hang if one server is
down...


> 
> ### glusterfs.vol ###
> ############################################
> # Start tcb_cluster
> ############################################
> # the exported volume to mount                    # required!
> volume tcb_cluster
>         type protocol/client
>         option transport-type tcp/client
>         option remote-host glustcluster
>         option remote-port 50001
>         option remote-subvolume tcb_cluster
> end-volume
> 
> ############################################
> # Start cs_cluster
> ############################################
> # the exported volume to mount                    # required!
> volume cs_cluster
>         type protocol/client
>         option transport-type tcp/client
>         option remote-host glustcluster
>         option remote-port 50002
>         option remote-subvolume cs_cluster
> end-volume
> 
> ############################################
> # Start pbx_cluster
> ############################################
> # the exported volume to mount                    # required!
> volume pbx_cluster
>         type protocol/client
>         option transport-type tcp/client
>         option remote-host glustcluster
>         option remote-port 50003
>         option remote-subvolume pbx_cluster
> end-volume
> 
> 
> ---------------------------------------------------
> ### glusterfsd.vol ###
> #############################################
> # Start tcb_data cluster
> #############################################
> volume tcb_local
>         type storage/posix
>         option directory /mnt/tcb_data
> end-volume
> 
> volume tcb_locks
>         type features/locks
>         option mandatory-locks on          # enables mandatory locking
> on all files
>         subvolumes tcb_local
> end-volume
> 
> # dataspace on remote machine, look in /etc/hosts to see that
> volume tcb_locks_remote
>         type protocol/client
>         option transport-type tcp
>         option remote-port 50001
>         option remote-host 192.168.1.25
>         option remote-subvolume tcb_locks
> end-volume
> 
> # automatic file replication translator for dataspace
> volume tcb_cluster_afr
>         type cluster/replicate
>         subvolumes tcb_locks tcb_locks_remote
> end-volume
> 
> # the actual exported volume
> volume tcb_cluster
>         type performance/io-threads
>         option thread-count 256
>         option cache-size 128MB
>         subvolumes tcb_cluster_afr
> end-volume
> 
> volume tcb_cluster_server
>         type protocol/server
>         option transport-type tcp
>         option transport.socket.listen-port 50001
>         option auth.addr.tcb_locks.allow *
>         option auth.addr.tcb_cluster.allow *
>         option transport.socket.nodelay on
>         subvolumes tcb_cluster
> end-volume
> 
> #############################################
> # Start cs_data cluster
> #############################################
> volume cs_local
>         type storage/posix
>         option directory /mnt/cs_data
> end-volume
> 
> volume cs_locks
>         type features/locks
>         option mandatory-locks on          # enables mandatory locking
> on all files
>         subvolumes cs_local
> end-volume
> 
> # dataspace on remote machine, look in /etc/hosts to see that
> volume cs_locks_remote
>         type protocol/client
>         option transport-type tcp
>         option remote-port 50002
>         option remote-host 192.168.1.25
>         option remote-subvolume cs_locks
> end-volume
> 
> # automatic file replication translator for dataspace
> volume cs_cluster_afr
>         type cluster/replicate
>         subvolumes cs_locks cs_locks_remote
> end-volume
> 
> # the actual exported volume
> volume cs_cluster
>         type performance/io-threads
>         option thread-count 256
>         option cache-size 128MB
>         subvolumes cs_cluster_afr
> end-volume
> 
> volume cs_cluster_server
>         type protocol/server
>         option transport-type tcp
>         option transport.socket.listen-port 50002
>         option auth.addr.cs_locks.allow *
>         option auth.addr.cs_cluster.allow *
>         option transport.socket.nodelay on
>         subvolumes cs_cluster
> end-volume
> 
> #############################################
> # Start pbx_data cluster
> #############################################
> volume pbx_local
>         type storage/posix
>         option directory /mnt/pbx_data
> end-volume
> 
> volume pbx_locks
>         type features/locks
>         option mandatory-locks on          # enables mandatory locking
> on all files
>         subvolumes pbx_local
> end-volume
> 
> # dataspace on remote machine, look in /etc/hosts to see that
> volume pbx_locks_remote
>         type protocol/client
>         option transport-type tcp
>         option remote-port 50003
>         option remote-host 192.168.1.25
>         option remote-subvolume pbx_locks
> end-volume
> 
> # automatic file replication translator for dataspace
> volume pbx_cluster_afr
>         type cluster/replicate
>         subvolumes pbx_locks pbx_locks_remote
> end-volume
> 
> # the actual exported volume
> volume pbx_cluster
>         type performance/io-threads
>         option thread-count 256
>         option cache-size 128MB
>         subvolumes pbx_cluster_afr
> end-volume
> 
> volume pbx_cluster_server
>         type protocol/server
>         option transport-type tcp
>         option transport.socket.listen-port 50003
>         option auth.addr.pbx_locks.allow *
>         option auth.addr.pbx_cluster.allow *
>         option transport.socket.nodelay on
>         subvolumes pbx_cluster
> end-volume
> 
> 
> -- 
> ^C
> 
> 
> 
> Smart Weblications GmbH - Florian Wiessner wrote:
>> Hi,
>>
>> Am 16.02.2010 01:58, schrieb Chad:
>>> I am new to glusterfs, and this list, please let me know if I have made
>>> any mistakes in posting this to the list.
>>> I am not sure what your standards are.
>>>
>>> I came across glusterfs last week, it was super easy to set-up and test
>>> and is almost exactly what I want/need.
>>> I set up 2 "glusterfs servers" that serve up a mirrored raid5 disk
>>> partitioned into 3 5oogb partitions to 6 clients.
>>> I am using round robin DNS, but I also tried to use heartbeat and
>>> ldirectord (see details below).
>>> Each server has 2 NICs: 1 for the clients, the other has a cross over
>>> cable connecting the 2 servers. Both NICs are 1000mbps.
>>>
>>> There are only 2 issues.
>>> #1. When one of the servers goes down the clients hang at least for a
>>> little while (more testing is needed) I am not sure if the clients can
>>> recover at all.
>>> #2. The read/write tests I performed came in at 1.6 when using
>>> glusterfs, NFS on all the same machines came in at 11, and a direct test
>>> on the data server came
>>> in at 111. How do I improve the performance?
>>>
>>
>> please share your vol-files. i don't understand why you would need
>> loadbalancers.
>>
>>> ###############################################
>>> My glusterfs set-up:
>>> 2 supermicro dual Xeon 3.0 ghz CPUs, 8gb ram, 4 @ 750gb seagate sata
>>> HDs, 3 in raid5 with 1 hot spare. (data servers)
>>
>> why not use raid10? same capacity, better speed..
>>
>>> 6 supermicro dual AMD 2.8 ghz CPUs, 4gb ram, 2 @ 250gb seagate sata HDs
>>> in raid 1. (client machines)
>>> glusterfs is set-up with round robin DNS to handle the load balancing of
>>> the 2 data servers.
>>
>> afaik there is no need to setup dns rr nor loadbalancing for the gluster
>> servers, glusterfs should take care of that itself. but without your
>> volfiles i
>> can't give any hints.
>>
>>



-- 

Mit freundlichen Grüßen,

Florian Wiessner

Smart Weblications GmbH
Martinsberger Str. 1
D-95119 Naila

fon.: +49 9282 9638 200
fax.: +49 9282 9638 205
24/7: +49 900 144 000 00 - 0,99 EUR/Min*
http://www.smart-weblications.de

--
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Geschäftsführer: Florian Wiessner
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