<div dir="ltr">Hi Lee,<br><br>it seems taht my P400i has no drivewritecache option.<br>Wenn i try to modify it comes up whit an error. And in one document i fount that it's default of in P800 controllers,<br>so i hope in my p400i too.<br>
<br>Mark<br><br><div class="gmail_quote">On Fri, Aug 1, 2008 at 3:33 PM, Lee Christie <span dir="ltr"><<a href="mailto:Lee@titaninternet.co.uk">Lee@titaninternet.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<div align="left"><span><font color="#0000ff" face="Arial" size="2">Most hard drives ship with write-cache
enabled.</font></span></div>
<div align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div align="left"><span><font color="#0000ff" face="Arial" size="2">When using decent raid controllers its best to turn off the
write(back) cache on hard drives. In our testing it makes no difference anyway
with a good card.</font></span></div>
<div align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div align="left"><span><font color="#0000ff" face="Arial" size="2">Its possible your lost data was in hard drive
cache.</font></span></div><br>
<blockquote style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div align="left">
<hr>
<font face="Tahoma" size="2"><b>From:</b> <a href="mailto:drbd-user-bounces@lists.linbit.com" target="_blank">drbd-user-bounces@lists.linbit.com</a>
[mailto:<a href="mailto:drbd-user-bounces@lists.linbit.com" target="_blank">drbd-user-bounces@lists.linbit.com</a>] <b>On Behalf Of </b>Mark
Eisenblaetter<br><b>Sent:</b> 01 August 2008 14:22<br><b>To:</b>
<a href="mailto:drbd-user@lists.linbit.com" target="_blank">drbd-user@lists.linbit.com</a><br><b>Subject:</b> [DRBD-user] Mysql on DRBD: Cache
Problem?<br></font><br></div><div><div></div><div class="Wj3C7c">
<div></div>
<div>Hi List,<br><br>I'm trying to run a DRBDMySQL Cluster (Active/Passive)
with Replication for easier backup.<br><br>My problem ist that after a
hardkill from the master(Powerkill) the slave misses binlog
positions.<br><br>After disable the Arraycontroller Write cache its reduced
from 100k to 16k Position but that not enough.<br><br>I run DRBD with Protocal
C and the minimal max-buffer of 32k.<br><br>Is there any cache i miss? Or
somthing else?<br><br>Mark<br><br><br>setup: 2x HP DL360G5 whit raid 10 and
Gigabit network for drbdsync only. <br><br>-- <br>Mark
Eisenblätter<br>Geissendoerfer & Leschinsky GmbH<br><a href="http://www.gl-sytemhaus.de" target="_blank">www.gl-sytemhaus.de</a><br></div></div></div></blockquote></div><font face="Tahoma" size="2"><font color="#0000ff">
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</blockquote></div><br><br clear="all"><br>-- <br>Mark Eisenblätter<br>Geissendoerfer & Leschinsky GmbH<br><a href="http://www.gl-sytemhaus.de">www.gl-sytemhaus.de</a><br>
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