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List: amanda-users
Subject: Re: failed: timeout waiting for ACK
From: Adi Spivak <adispi () compulab ! co ! il>
Date: 2011-10-09 14:33:00
Message-ID: 4E91B09C.2070504 () compulab ! co ! il
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this is not my case as far as i can see, i have no iptables rules at
all and no firewall in the middle to block.<br>
i tried to increase limitation of xinet.d and this does not change a
thing.<br>
<br>
anyone else can think of something? anything? i will try all...<br>
<br>
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<p style="margin-bottom: 0cm; margin-top: 0pt;"><font
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<p style="margin-bottom: 0cm; margin-top: 0pt;"><font
color="#000000"><font size="4"><b>Adi Spivak</b></font></font></p>
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On 10/05/2011 09:15 PM, Debra Baddorf wrote:
<blockquote cite="mid:88AF6BF6-82E4-497A-93A6-A0C24868F7F7@fnal.gov"
type="cite">My network guy made the change, but if was in some
priv settings on the server -- allowing the
<div>client to initiate a new connection. Totally outside of
amanda. </div>
<div>I think we were running free-BSD at the time. I can't find
similar files right now under Linux,</div>
<div>but it might have been in rules.ipf or something like that?
It depends on what connection</div>
<div>security you have turned on, I guess.</div>
<div><br>
</div>
<div>But I hope it gives you someplace to explore ..... if nobody
has any internal-to-amanda fixes for you.</div>
<div>Deb</div>
<div><br>
</div>
<div><br>
<div>
<div>On Oct 5, 2011, at 1:54 PM, Adi Spivak wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space;
-webkit-line-break: after-white-space; ">Can you alaborate
on what you did to fix this? What permission is missing?
What did you change? The client or the server?<br>
-- <br>
Thanks,<br>
Adi Spivak<br>
<br>
<div class="gmail_quote">Debra Baddorf <<a
moz-do-not-send="true" \
href="mailto:baddorf@fnal.gov">baddorf@fnal.gov</a>> wrote:
<blockquote class="gmail_quote" style="margin: 0pt 0pt
0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
One problem I had early on, which you might be
having:
<div>When amanda starts a backup, the connection is
held open for XX amount of time.</div>
<div>The client can reply back on that same connection
..... unless it takes longer than that</div>
<div>to collect its data and get started. That could
change as the data increases in size.</div>
<div>If the initial connection is no longer open, the
client has to start a NEW connection</div>
<div>back to the server.</div>
<div> On my machines, that required a different level
of privilege than using a connection</div>
<div>that the server had started. My client didn't
have connection to initiate a connection.</div>
<div>Took us a while to find and fix that....</div>
<div><br>
</div>
<div>Deb Baddorf</div>
<div>Fermilab</div>
<div><br>
</div>
<div><br>
<div>
<div>On Oct 5, 2011, at 2:41 AM, Adi Spivak wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div style="direction: ltr;"
bidimailui-detected-decoding-type="latin-charset"
bgcolor="#FFFFFF" text="#000000"> hi.<br>
Amanda version 2.6.1p1<br>
<br>
this server has worked perfectly for more then
a year.<br>
now, i get ACK error all the times, mostly on
random servers/workstations, however it is
consistence in self error, meaning the server
itself gets ACK error on itself all the time.<br>
nothing has been changed as far as i know (the
main configuration was not changed) as i did
not change anything until the error started to
show up.<br>
then i followed the guide here:<br>
<a moz-do-not-send="true"
\
href="http://wiki.zmanda.com/index.php/Selfcheck_request_failed">http://wiki.zmanda.com/index.php/Selfcheck_request_failed</a><br>
and tried everything ther (i only use bsdtcp
amservice returns ok on all of them,checked
firewalls and xinetd configuration, tried
upgrading the clients on windows machines and
even started to use the hosts file) but
nothing works.<br>
<br>
as i understand from the guide since amservice
checks out ok, this is a server issue, but i
could find none.<br>
<br>
i also tried increasing etimeout, dtimeout and
ctimeout.<br>
i even tried weird stuff i found like network
settings:<br>
/sbin/ifconfig eth0 txqueuelen 10000<br>
/bin/echo 180 >
/proc/sys/net/ipv4/tcp_keepalive_time<br>
and eventually i even started to replace all
my backbone switches to check if this is my
network issue (highly unlikley as it fails on
itself too, but i am running out of options).<br>
<br>
anyone knows what else to check? please do not
advise an upgrade as i currently does not have
a backup for my backup server and not in a
time for buying new hardware or even have much
time for tests to see what will break if i
upgrade.<br>
<br>
thank you.<br>
<div class="moz-signature">-- <br>
<div style="margin-bottom: 0cm; margin-top:
0pt; "><font color="#000000">Regards,</font></div>
<div style="margin-bottom: 0cm; margin-top:
0pt; "><font color="#000000"><font
size="4"><b>Adi Spivak</b></font></font></div>
<div style="margin-bottom: 0cm; margin-top:
0pt; "><font color="#000000" size="3">IT
Manager</font><span
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St, "Mordot HaCarmel"
Industrial Park, Yokneam
Elite</font></p>
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<p style="margin-bottom:
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Israel</font></p>
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