5:53 a.m.
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Hello,
although it helps nobody I just want to leave the information that
my first two weeks with ovirt were horrible. That said I'm still
confident that I will able to get it all managed.
For know I have some addition to the NFS troubleshooting wiki
that could be helpful for others. My wiki account request is still
pending so maybe someone with access could expand the page.
NFS mounts on the hypervisor hosts (at least Fedora 19) use the
option rsize=3D1M,wsize=3D1M by default. If the NFS servers maximum
tcp window memory settings are less or equal than 1M the
connections to NFS data/ISO domains may stall from time to time.
Raising the TCP kernel settings on NFS server side to
net.ipv4.tcp_mem =3D 4096 65536 4194304
net.ipv4.tcp_rmem =3D 4096 65536 4194304
net.ipv4.tcp_wmem =3D 4096 65536 4194304
helps to get things stable.
Markus
--_000_12EF8D94C6F8734FB2FF37B9FBEDD17358574D93EXCHANGEcollogi_
Content-Type: text/html; charset="iso-8859-1"
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<html dir=3D"ltr">
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html;
charset=3Diso-8859-=
1">
<style id=3D"owaParaStyle" type=3D"text/css">P
{margin-top:0;margin-bottom:=
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<body ocsi=3D"0" fpstyle=3D"1">
<div style=3D"direction: ltr;font-family: Tahoma;color: #000000;font-size: =
10pt;">Hello,<br>
<br>
although it helps nobody I just want to leave the information that <br>
my first two weeks with ovirt were horrible. That said I'm still<br>
confident that I will able to get it all managed. <br>
<br>
For know I have some addition to the NFS troubleshooting wiki<br>
that could be helpful for others. My wiki account request is still<br>
pending so maybe someone with access could expand the page.<br>
<br>
NFS mounts on the hypervisor hosts (at least Fedora 19) use the <br>
option rsize=3D1M,wsize=3D1M by default. If the NFS servers maximum <br>
tcp window memory settings are less or equal than 1M the <br>
connections to NFS data/ISO domains may stall from time to time.<br>
<br>
Raising the TCP kernel settings on NFS server side to<br>
<br>
net.ipv4.tcp_mem =3D 4096 65536 4194304<br>
net.ipv4.tcp_rmem =3D 4096 65536 4194304<br>
net.ipv4.tcp_wmem =3D 4096 65536 4194304<br>
<br>
helps to get things stable.<br>
<br>
Markus<br>
<br>
<br>
<br>
<br>
</div>
</body>
</html>
--_000_12EF8D94C6F8734FB2FF37B9FBEDD17358574D93EXCHANGEcollogi_--
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Collogia
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Ubierring 11
D-50678 Köln
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Dr. Michael Höhnerbach
President of the supervisory board:
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Registry office: district court Cologne
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6:06 a.m.
Hi Markus,
I am sorry that you had a bad experience with ovirt and I am sure
everyone in the ovirt community appreciate your feedback and your
contribution.
As you said, I am positive that you will be able to get it all managed
and please use the list for any needed assistance.
I am adding some people to this mail so that they can help with the wiki
request.
Thanks for the input!
Dafna
On 09/09/2013 11:53 AM, Markus Stockhausen wrote:
Hello,
although it helps nobody I just want to leave the information that
my first two weeks with ovirt were horrible. That said I'm still
confident that I will able to get it all managed.
For know I have some addition to the NFS troubleshooting wiki
that could be helpful for others. My wiki account request is still
pending so maybe someone with access could expand the page.
NFS mounts on the hypervisor hosts (at least Fedora 19) use the
option rsize=1M,wsize=1M by default. If the NFS servers maximum
tcp window memory settings are less or equal than 1M the
connections to NFS data/ISO domains may stall from time to time.
Raising the TCP kernel settings on NFS server side to
net.ipv4.tcp_mem = 4096 65536 4194304
net.ipv4.tcp_rmem = 4096 65536 4194304
net.ipv4.tcp_wmem = 4096 65536 4194304
helps to get things stable.
Markus
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
--
Dafna Ron
7:33 a.m.
On 09/09/2013 01:53 PM, Markus Stockhausen wrote:
Hello,
although it helps nobody I just want to leave the information that
my first two weeks with ovirt were horrible. That said I'm still
confident that I will able to get it all managed.
For know I have some addition to the NFS troubleshooting wiki
that could be helpful for others. My wiki account request is still
pending so maybe someone with access could expand the page.
NFS mounts on the hypervisor hosts (at least Fedora 19) use the
option rsize=1M,wsize=1M by default. If the NFS servers maximum
tcp window memory settings are less or equal than 1M the
connections to NFS data/ISO domains may stall from time to time.
Raising the TCP kernel settings on NFS server side to
net.ipv4.tcp_mem = 4096 65536 4194304
net.ipv4.tcp_rmem = 4096 65536 4194304
net.ipv4.tcp_wmem = 4096 65536 4194304
helps to get things stable.
ayal/federico - thoughts on how we can make things better? warn? etc?
8:42 a.m.
This is a multi-part message in MIME format.
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ayal/federico - thoughts on how we can make things better? warn?
etc?=0A=
=0A=
Got my account and already modified the wiki. =0A=
=0A=
Thanks for the help.=0A=
=0A=
Markus=0A=
------=_NextPartTM-000-d683498f-8a84-477f-994b-500ad7716bb3
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name="InterScan_Disclaimer.txt"
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename="InterScan_Disclaimer.txt"
****************************************************************************
Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte
Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail
irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und
vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte
Weitergabe dieser Mail ist nicht gestattet.
Über das Internet versandte E-Mails können unter fremden Namen erstellt oder
manipuliert werden. Deshalb ist diese als E-Mail verschickte Nachricht keine
rechtsverbindliche Willenserklärung.
Collogia
Unternehmensberatung AG
Ubierring 11
D-50678 Köln
Vorstand:
Kadir Akin
Dr. Michael Höhnerbach
Vorsitzender des Aufsichtsrates:
Hans Kristian Langva
Registergericht: Amtsgericht Köln
Registernummer: HRB 52 497
This e-mail may contain confidential and/or privileged information. If you
are not the intended recipient (or have received this e-mail in error)
please notify the sender immediately and destroy this e-mail. Any
unauthorized copying, disclosure or distribution of the material in this
e-mail is strictly forbidden.
e-mails sent over the internet may have been written under a wrong name or
been manipulated. That is why this message sent as an e-mail is not a
legally binding declaration of intention.
Collogia
Unternehmensberatung AG
Ubierring 11
D-50678 Köln
executive board:
Kadir Akin
Dr. Michael Höhnerbach
President of the supervisory board:
Hans Kristian Langva
Registry office: district court Cologne
Register number: HRB 52 497
****************************************************************************
------=_NextPartTM-000-d683498f-8a84-477f-994b-500ad7716bb3--
8:45 a.m.
On 09/09/2013 04:42 PM, Markus Stockhausen wrote:
> ayal/federico - thoughts on how we can make things better? warn?
etc?
Got my account and already modified the wiki.
Thanks for the help.
Markus
thanks markus. my question to ayal/federico is on how to fix the
original issue to at least warn about the issue.
6:19 p.m.
----- Original Message -----
From: "Itamar Heim" <iheim(a)redhat.com>
To: "Markus Stockhausen" <stockhausen(a)collogia.de>
Cc: "Ayal Baron" <abaron(a)redhat.com>, "Federico Simoncelli"
<fsimonce(a)redhat.com>, users(a)ovirt.org, "Allon Mureinik"
<amureini(a)redhat.com>
Sent: Monday, September 9, 2013 3:45:56 PM
Subject: Re: AW: [Users] NFS troubleshooting page
On 09/09/2013 04:42 PM, Markus Stockhausen wrote:
>> ayal/federico - thoughts on how we can make things better? warn? etc?
>
> Got my account and already modified the wiki.
>
> Thanks for the help.
>
> Markus
>
thanks markus. my question to ayal/federico is on how to fix the
original issue to at least warn about the issue.
Good question. I don't have an answer yet, but I'll look into it.
--
Federico
3902
days inactive
3904
days old
5 comments
4 participants
participants (4)
-
Dafna Ron -
Federico Simoncelli -
Itamar Heim -
Markus Stockhausen