Recommended gluster setup
by Abi Askushi
Hi all,
I see in the ovirt guides that a gluster volume replica 3 with 1 arbiter is
recommended.
Why not simple replica 3? Is it due to the higher replication data that
would cause performance issues?
What I am observing is that a VM running on the server which has the
arbiter brick has slower read performance then when the same VM runs on
another server with a normal brick. Has anyone observed this? Is it because
the arbiter does not have the real data on it?
Thanx,
Alex
7 years, 3 months
Different link speeds in LACP LAG?
by Chris Adams
I have a small oVirt setup for one customer, with two servers each
connected to a two-switch stack with 1G links. Now the customer would
like to upgrade the server links to 10G. My question is this: can I add
a 10G NIC and do this with minimal "fuss" by just adding the 10G links
to the same LAG, then removing the 1G links? I would have the host in
maintenance mode no matter what.
I haven't checked the switch to see if it'll support that yet, figured
I'd start on the oVirt side.
--
Chris Adams <cma(a)cmadams.net>
7 years, 3 months
V4.1 questions
by Colin Coe
Hi all
We're in the process of upgrading from RHEV 3.5 to 4.1.5 and I have a
couple of questions.
RHV 4.1.5 takes between 10-15 minutes to become usable after a service
restart, is this expected or is something wrong with our environment?
The webUI seems to timeout and go back to the logon page after a very short
time. Can this behavior be changed?
Lastly, the RH318 course book states that to upgrade a RHEV-H node via
RHEV-M, you need to install the "rhev-hypervisor7" package on the RHEV-M
node. Is this still correct?
Thanks
CC
7 years, 3 months
oVirt node with SHE on FC
by Gianluca Cecchi
Hello,
it is not clear to me the exact workflow in case of testing what in object.
For sure first step is to install base node from iso.
NGN has no more read only filesystem.
Does this mean that I have to set up eg multipath for FC LUNs (engine and
data domain) before running the engine setup via cockpit?
Or when I specify FC in type of storage domain it would ask and setup
automatically multipath for me?
Are the ovirt repos already setup when I have installed from the iso or do
I have to install ovirt-release-xx rpm?
In another enviroment with block based storage domains (iSCSI) and an
external engine and full CentOS hypervisors I customized vdsm creating a
file /etc/vdsm/vdsm.conf.d named 50_thin_block_extension_rules.conf using
volume_utilization_percent = 25
volume_utilization_chunk_mb = 4096
Can I make these sort of customization in NGN without any persist command,
because the file system is read write now or should I manage from cockpit
or other tools instead?
I'm exploring situations where NGN could be suitable better than full
CentOS OS for hypervisors and I would like to know clearly advantages and
limits.
Thanks in advance
Gianluca
7 years, 3 months
Panasas File System panfs POSIX compliant
by Allen Dial
--Apple-Webmail-42--b04cfd91-c1ca-47ca-bfad-6ea34e57daa3
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Hello Ovirt users!=0A=0A=0A=0AI am trying to add a POSIX compliant filesys=
tem to Ovirt but keep getting "Error while executing action Add Storage Co=
nnection: Problem while trying to mount target."=0A=0A=0A=0ATo mount via t=
erminal after adding to fstab the command is <mount -t panfs panfs://ipadd=
ress/test> but using that in "Path" results in the above mentioned error.=0A=
=0A=0A=0ADoes anyone here have knowledge of panfs or Panasas or how one mi=
ght get this work?=0A=0A=0A=0AThank you,=0AAllen
--Apple-Webmail-42--b04cfd91-c1ca-47ca-bfad-6ea34e57daa3
Content-Type: multipart/related;
type="text/html";
boundary=Apple-Webmail-86--b04cfd91-c1ca-47ca-bfad-6ea34e57daa3
--Apple-Webmail-86--b04cfd91-c1ca-47ca-bfad-6ea34e57daa3
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charset=utf-8;
<html><body><div>Hello Ovirt users! <br></div><div><br data-mce-bogus=3D"1"></div><div=
>I am trying to add a POSIX compliant filesystem to Ovirt but keep getting=
"Error while executing action Add Storage Connection: Problem while tryin=
g to mount target."<br data-mce-bogus=3D"1"></div><div><br data-mce-bogus=3D=
"1"></div><div>To mount via terminal after adding to fstab the command is =
<mount -t panfs panfs://ipaddress/test> but using that in "Path" res=
ults in the above mentioned error.<br></div><div><br data-mce-bogus=3D"1">=
</div><div>Does anyone here have knowledge of panfs or Panasas or how one =
might get this work?<br data-mce-bogus=3D"1"></div><div><br data-mce-bogus=
=3D"1"></div><div>Thank you,=0A</div><div class=3D"x-apple-signature"><pre=
style=3D"font-family: 'SFNSText','Helvetica Neue', Helvetica, sans-serif;=
font-size: 15px; white-space: pre-wrap; word-wrap: break-word;" data-mce-=
style=3D"font-family: 'SFNSText','Helvetica Neue', Helvetica, sans-serif; =
font-size: 15px; white-space: pre-wrap; word-wrap: break-word;">Allen</pre=
></div></body></html>
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--Apple-Webmail-42--b04cfd91-c1ca-47ca-bfad-6ea34e57daa3--
7 years, 3 months
Question: Where does Ovirt stores VM snapshots?
by Shashwat shagun
Hi,
I’m new to Ovirt, I just wanted to know where does Ovirt stores VM snapshots (On the hosts?) and
It stores the VM virtual hard drives on hosts right? Because wouldn’t it’ll be slow if they stores it on a Network drive?
P.S sorry for my bad English, English is not my first language
Regards,
Shashwat Shagun
me(a)shashwat.tech
7 years, 3 months
why force bond* naming?
by Charles Kozler
Hello -
I had setup my server somewhat before installing ovirt. I left em1 alone
for the ovirtmgmt but I had bonded two NICs on a separate card and named it
storage0 and storage1 accordingly.
Everything setup fine and when I went to add more networks for em3+em4 in
LACP named bond0, the web UI would not let me proceed because my two NICs
named storage0 and storage1. It didnt say directly it was those but it said
it needed "bond" in the name followed by a number. I shut everything down
and renamed them bond100 and bond101 and all was well
However, I cant stop and think that I was not trying to set those NICs
(storage0/1) up in ovirt so why would ovirt UI care about NICs in the
server that it wasnt even responsible for managing nor I had any
modifications to from the UI?
I get forcing it when you're adding through to UI but making the UI force
the user to use bond* for all of their NICs doesnt seem right
Thoughts?
7 years, 3 months
vmware ova import problem
by Jiří Sléžka
This is a cryptographically signed message in MIME format.
--------------ms030906080003020003010507
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: quoted-printable
Hi,
today I tested vmware ova import for first time but unfortunately it
failed. (btw. it would be great to have a possibility to upload ova
directly from manager...)
problem seems to be this (vdsm/import log)
=2E..
libguestfs: trace: v2v: inspect_get_type =3D "linux"
i_root =3D /dev/sda1
i_type =3D
linux
i_distro =3D debian
i_arch =3D i386
i_major_version =3D 9
i_minor_version =3D 0
i_package_format =3D deb
i_package_management =3D apt
i_product_name =3D 9.0
i_product_variant =3D unknown
i_uefi =3D
false
=2E..
=2E..
=2E..
[ 13.7] Converting 9.0 to run on KVM
virt-v2v: error: virt-v2v is unable to
convert this guest type
(linux/debian)
rm -rf '/var/tmp/ova.lB3mEN'
rm -rf
'/var/tmp/null.kaX2uZ'
=2E..
so is debian really unsupported to be imported fom vmware ova?
I believe this vm could run as is, even without v2v convert.
It would be nice to have a possibility to bypass v2v process and import
appliance as is, just disk(s) and vm definition. Does it make sense?
Cheers,
Jiri Slezka
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7 years, 3 months
