<br><font size=2 face="sans-serif">You may wish to have a look at the timeout
values in the DRBD.conf. They probably are on the low side for your network
thus causing DRBD think you have connection outages where in fact it just
has latency.</font>
<br><font size=2 face="sans-serif">ping-timeout, connect-int, timeout </font>
<br><font size=2 face="sans-serif">are the the variables to look at. Default
Values are optimised for wired networks.<br>
</font><font size=3 color=#5f5f5f>Mit freundlichen Grüßen / Best Regards<br>
<br>
Robert Köppl<br>
<br>
Customer Support & Projects <br>
Teamleader IT Support<br>
<b><br>
KNAPP Systemintegration GmbH</b><br>
Waltenbachstraße 9<br>
8700 Leoben, Austria <br>
Phone: +43 3842 805-322<br>
Fax: +43 3842 82930-500<br>
robert.koeppl@knapp.com <br>
www.KNAPP.com <br>
<br>
Commercial register number: FN 138870x<br>
Commercial register court: Leoben</font><font size=3><br>
</font><font size=3 color=#d2d2d2><br>
The information in this e-mail (including any attachment) is confidential
and intended to be for the use of the addressee(s) only. If you have received
the e-mail by mistake, any disclosure, copy, distribution or use of the
contents of the e-mail is prohibited, and you must delete the e-mail from
your system. As e-mail can be changed electronically KNAPP assumes no responsibility
for any alteration to this e-mail or its attachments. KNAPP has taken every
reasonable precaution to ensure that any attachment to this e-mail has
been swept for virus. However, KNAPP does not accept any liability for
damage sustained as a result of such attachment being virus infected and
strongly recommend that you carry out your own virus check before opening
any attachment.</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>Piotr Kandziora <raveenpl@gmail.com></b>
</font>
<br><font size=1 face="sans-serif">Gesendet von: drbd-user-bounces@lists.linbit.com</font>
<p><font size=1 face="sans-serif">16.02.2012 17:01</font>
<td width=59%>
<table width=100%>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">An</font></div>
<td><font size=1 face="sans-serif">Digimer <linux@alteeve.com></font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Kopie</font></div>
<td><font size=1 face="sans-serif">drbd-user@lists.linbit.com</font>
<tr valign=top>
<td>
<div align=right><font size=1 face="sans-serif">Thema</font></div>
<td><font size=1 face="sans-serif">Re: [DRBD-user] replication link stability</font></table>
<br>
<table>
<tr valign=top>
<td>
<td></table>
<br></table>
<br>
<br>
<br><font size=3>Digimer,</font>
<br>
<br>
<br><font size=3>Thanks for your answer. DRBD Proxy could be a solution,
but it is not possible for today. </font>
<br>
<br><font size=3>I am thinking of trying DRBD with protocol A, but currently
I am not able to test on my environment as it is in production. I will
have maintenance window on the weekend. Do you think it can help?
If yes, may you suggest values for tcp send buffer?</font>
<br>
<br><font size=3>Thanks in advance.</font>
<br>
<br><font size=3>Best regards</font>
<br><font size=3>Piotr Kandziora</font>
<br>
<br><font size=3><br>
</font>
<br><font size=3>On Thu, Feb 16, 2012 at 4:43 PM, Digimer <</font><a href=mailto:linux@alteeve.com><font size=3 color=blue><u>linux@alteeve.com</u></font></a><font size=3>>
wrote:</font>
<br><font size=3>Hi Piotr,<br>
<br>
Samba (and similar protocols) are generally pretty forgiving of<br>
network issues, so it's not a surprise that they work where DRBD does<br>
not. DRBD is designed for high speed/low latency environments, and has
a<br>
fair bit of attention paid to fault detection and recovery. If it sees
a<br>
network fault, even a short one, it has to assume the link has failed<br>
and recovery is needed. This does not lend itself well to use on<br>
slow/error prone networks.<br>
<br>
Is it possible to use a wired connection for the DRBD replication?
If<br>
not, I would suggest looking at DRBD Proxy instead, as it is designed to<br>
run over slow/unstable links, but it is asynchronous, so be advised that<br>
consistency is not always guaranteed.</font>
<br><tt><font size=2>_______________________________________________<br>
drbd-user mailing list<br>
drbd-user@lists.linbit.com<br>
http://lists.linbit.com/mailman/listinfo/drbd-user<br>
</font></tt>
<br>