Hi Amar,
Thank you for your answering.
On 2010/10/02, at 16:08, Amar Tumballi wrote:
> Hi Tomoaski,
>
> Answers Inline:
>
> 1) Can I start/stop volumes from any servers?
>
> I have 5 servers and a volume 'vol1'on them.
> It seems that 'gluster volume start vol1' returns immediately at
> head-001(10.200.20.1) but does not return at another servers.
>
>
> What is the status of command ? Can you see the process list and check if
> glusterfs processes are running per those bricks?
starting at head-001:
[r...@head-001 ~]# gluster volume create vol1 10.200.20.1:/export
10.200.20.2:/export 10.200.20.3:/export 10.200.20.4:/export 10.200.20.5:/export
Creation of volume vol1 has been successful
[r...@head-001 ~]# gluster volume info
Volume Name: vol1
Type: Distribute
Status: Created
Number of Bricks: 5
Transport-type: tcp
Bricks:
Brick1: 10.200.20.1:/export
Brick2: 10.200.20.2:/export
Brick3: 10.200.20.3:/export
Brick4: 10.200.20.4:/export
Brick5: 10.200.20.5:/export
[r...@head-001 ~]# gluster volume start vol1
Starting volume vol1 has been successful
[r...@head-001 ~]# ps ax | grep gluster
3443 ? Ssl 0:00 /usr/sbin/glusterd
15587 ? Ssl 0:00 /usr/sbin/glusterfs --xlator-option
vol1-server.listen-port=6971 -s localhost --volfile-id vol1.10.200.20.1.export
-p /etc/glusterd/vols/vol1/run/10.200.20.1-export.pid --brick-name /export
--brick-port 6971 -l /etc/glusterd/logs/bricks/export.log
15591 ? Ssl 0:00 /usr/sbin/glusterfs -f
/etc/glusterd/nfs/nfs-server.vol -p /etc/glusterd/nfs/run/nfs.pid -l
/etc/glusterd/logs/nfs.log
15599 pts/3 S+ 0:00 grep gluster
[r...@head-001 ~]# gluster volume stop vol1
Stopping volume will make its data inaccessible. Do you want to Continue? (y/n)
y
Stopping volume vol1 has been successful
[r...@head-001 ~]# !ps
ps ax | grep gluster
3443 ? Ssl 0:00 /usr/sbin/glusterd
15609 pts/3 S+ 0:00 grep gluster
[r...@head-001 ~]#
starting at head-002:
[r...@head-002 ~]# ps ax | grep gluster
12915 ? Ssl 0:00 /usr/sbin/glusterd
23008 pts/2 S+ 0:00 grep gluster
[r...@head-002 ~]# gluster volume info
Volume Name: vol1
Type: Distribute
Status: Stopped
Number of Bricks: 5
Transport-type: tcp
Bricks:
Brick1: 10.200.20.1:/export
Brick2: 10.200.20.2:/export
Brick3: 10.200.20.3:/export
Brick4: 10.200.20.4:/export
Brick5: 10.200.20.5:/export
[r...@head-002 ~]# gluster volume start vol1
[r...@head-002 ~]# !ps
ps ax | grep gluster
12915 ? Ssl 0:00 /usr/sbin/glusterd
23098 pts/2 S+ 0:00 grep gluster
[r...@head-002 ~]# gluster volume info
Volume Name: vol1
Type: Distribute
Status: Stopped
Number of Bricks: 5
Transport-type: tcp
Bricks:
Brick1: 10.200.20.1:/export
Brick2: 10.200.20.2:/export
Brick3: 10.200.20.3:/export
Brick4: 10.200.20.4:/export
Brick5: 10.200.20.5:/export
[r...@head-002 ~]# gluster volume start vol1
Starting volume vol1 has been unsuccessful
[r...@head-002 ~]# !ps
ps ax | grep gluster
12915 ? Ssl 0:00 /usr/sbin/glusterd
23116 pts/2 S+ 0:00 grep gluster
[r...@head-002 ~]# gluster volume info
Volume Name: vol1
Type: Distribute
Status: Stopped
Number of Bricks: 5
Transport-type: tcp
Bricks:
Brick1: 10.200.20.1:/export
Brick2: 10.200.20.2:/export
Brick3: 10.200.20.3:/export
Brick4: 10.200.20.4:/export
Brick5: 10.200.20.5:/export
[r...@head-002 ~]#
>
>
> 2) Can I expect same or higher I/O performance lower cpu usage compare to
> 3.0.5 ?
>
>
> Yes, but in few cases it may be reduced. With 3.1.0 our goal is mainly to
> bring in 'ease of use', more easier diagnosis, correctness and stability..
> Performance of 'replicate' volumes are looked into as of now.
I see.
New user interface seems very good to me.
Since I have replicated block devices (cluster RAID-1 volumes), I don't specify
replica option at 'gluster create' times.
>
>
> 3) When and what keys should I change the value? and how should I review the
> current values ?
>
> volume set <VOLNAME> <KEY> <VALUE> - set options for volume <VOLNAME>
>
>
> http://www.gluster.com/community/documentation/index.php/GlusterFS_3.1beta#Volume_Set
>
> We have made few more fixes after beta.. consider upgrading to our new QA
> releases from
>
> http://ftp.gluster.com/pub/gluster/glusterfs/qa-releases
I will try latests.
>
> Thanks for trying out 3.1 and reporting issues. We appreciate your feedbacks.
>
> Regards,
> Amar
Best,
Tomo Sato
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