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On 04/06/2016 02:08 PM, Roderick Mooi
wrote:
Hi Ravi and colleagues
(apologies for hijacking this thread but I’m not
sure where else to report this (and it is related).)
With gluster 3.7.10, running
#gluster volume set <volname> group virt
fails with:
volume set: failed: option : eager-lock does not
exist
Did you mean eager-lock?
I had to remove the eager-lock setting from
/var/lib/glusterd/groups/virt to get this to work. It seems
like setting eager-lock has been removed from latest gluster.
Is this correct? Either way, is there anything else I should
do?
It is not removed. Can you try 'gluster volume set volname
cluster.eager-lock enable`?
I think the disperse (EC) translator introduced a
`disperse.eager-lock` which is why you would need to mention entire
volume option name to avoid ambiguity.
We probably need to fix the virt profile setting to include the
entire name. By the way 'gluster volume set help` should give you
the list of all options.
-Ravi
Cheers,
Roderick
Hi Bill,
Can you enable virt-profile setting for your
volume and see if that helps? You need to enable
this optimization when you create the volume using
ovrit, or use the following command for an
existing volume:
#gluster volume set <volname> group virt
-Ravi
On 02/12/2016 05:22 AM, Bill James wrote:
My apologies, I'm showing how much of a noob I am.
Ignore last direct to gluster numbers, as that
wasn't really glusterfs.
[root@ovirt2 test ~]# mount -t glusterfs ovirt2-ks.test.j2noc.com:/gv1
/mnt/tmp/
[root@ovirt2 test ~]# time dd if=/dev/zero
of=/mnt/tmp/testfile2 bs=1M count=1000
oflag=direct
1048576000 bytes (1.0 GB) copied, 65.8596 s, 15.9
MB/s
That's more how I expected, it is pointing to
glusterfs performance.
On 02/11/2016 03:27
PM, Bill James wrote:
don't know if it helps, but I ran a few more
tests, all from the same hardware node.
The VM:
[root@billjov1 ~]# time dd if=/dev/zero
of=/root/testfile bs=1M count=1000 oflag=direct
1048576000 bytes (1.0 GB) copied, 62.5535 s,
16.8 MB/s
Writing directly to gluster volume:
[root@ovirt2 test ~]# time dd if=/dev/zero
of=/gluster-store/brick1/gv1/testfile bs=1M
count=1000 oflag=direct
1048576000 bytes (1.0 GB) copied, 9.92048 s, 106
MB/s
Writing to NFS volume:
[root@ovirt2 test ~]# time dd if=/dev/zero
of=/mnt/storage/qa/testfile bs=1M count=1000
oflag=direct
1048576000 bytes (1.0 GB) copied, 10.5776 s,
99.1 MB/s
NFS & Gluster are using the same interface.
Tests were not run at same time.
This would suggest my problem isn't glusterfs,
but the VM performance.
On 02/11/2016 03:13
PM, Bill James wrote:
xml attached.
On 02/11/2016 12:28 PM, Nir Soffer wrote:
On Thu, Feb
11, 2016 at 8:27 PM, Bill James <bill.james@xxxxxx>
wrote:
thank you
for the reply.
We setup gluster using the names
associated with NIC 2 IP.
Brick1: ovirt1-ks.test.j2noc.com:/gluster-store/brick1/gv1
Brick2: ovirt2-ks.test.j2noc.com:/gluster-store/brick1/gv1
Brick3: ovirt3-ks.test.j2noc.com:/gluster-store/brick1/gv1
That's NIC 2's IP.
Using 'iftop -i eno2 -L 5 -t' :
dd if=/dev/zero of=/root/testfile bs=1M
count=1000 oflag=direct
1048576000 bytes (1.0 GB) copied, 68.0714
s, 15.4 MB/s
Can you share the xml of this vm? You can
find it in vdsm log,
at the time you start the vm.
Or you can do (on the host):
# virsh
virsh # list
(username: vdsm@ovirt password: shibboleth)
virsh # dumpxml vm-id
Peak rate
(sent/received/total):
281Mb 5.36Mb
282Mb
Cumulative
(sent/received/total):
1.96GB 14.6MB
1.97GB
gluster volume info gv1:
Options Reconfigured:
performance.write-behind-window-size:
4MB
performance.readdir-ahead: on
performance.cache-size: 1GB
performance.write-behind: off
performance.write-behind: off didn't help.
Neither did any other changes I've tried.
There is no VM traffic on this VM right
now except my test.
On 02/10/2016 11:55 PM, Nir Soffer wrote:
On Thu,
Feb 11, 2016 at 2:42 AM, Ravishankar N <ravishankar@xxxxxxxxxx>
wrote:
+gluster-users
Does disabling
'performance.write-behind' give a
better throughput?
On 02/10/2016 11:06 PM, Bill James
wrote:
I'm
setting up a ovirt cluster using
glusterfs and noticing not stellar
performance.
Maybe my setup could use some
adjustments?
3 hardware nodes running centos7.2,
glusterfs 3.7.6.1, ovirt 3.6.2.6-1.
Each node has 8 spindles configured
in 1 array which is split using LVM
with one logical volume for system
and one for gluster.
They each have 4 NICs,
NIC1 = ovirtmgmt
NIC2 = gluster (1GbE)
How do you ensure that gluster trafic is
using this nic?
NIC3 = VM traffic
How do you ensure that vm trafic is
using this nic?
I
tried with default glusterfs
settings
And did you find any difference?
and
also with:
performance.cache-size: 1GB
performance.readdir-ahead: on
performance.write-behind-window-size:
4MB
[root@ovirt3 test scripts]# gluster
volume info gv1
Volume Name: gv1
Type: Replicate
Volume ID:
71afc35b-09d7-4384-ab22-57d032a0f1a2
Status: Started
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: ovirt1-ks.test.j2noc.com:/gluster-store/brick1/gv1
Brick2: ovirt2-ks.test.j2noc.com:/gluster-store/brick1/gv1
Brick3: ovirt3-ks.test.j2noc.com:/gluster-store/brick1/gv1
Options Reconfigured:
performance.cache-size: 1GB
performance.readdir-ahead: on
performance.write-behind-window-size:
4MB
Using simple dd test on VM in ovirt:
dd if=/dev/zero
of=/root/testfile bs=1G count=1
oflag=direct
block size of 1G?!
Try 1M (our default for storage
operations)
1073741824 bytes (1.1 GB) copied,
65.9337 s, 16.3 MB/s
Another VM not in ovirt using nfs:
dd if=/dev/zero
of=/root/testfile bs=1G count=1
oflag=direct
1073741824 bytes (1.1 GB)
copied, 27.0079 s, 39.8 MB/s
Is that expected or is there a
better way to set it up to get
better
performance?
Adding Niels for advice.
This
email, its contents and ....
Please avoid this, this is a public
mailing list, everything you write
here is public.
Nir
I'll have to look into how to remove this
sig for this mailing list....
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