Subject: RAIDFrame and RAID-5
To: None <current-users@netbsd.org>
From: Thomas Hertz <thomas@hz.se>
List: current-users
Date: 09/07/2003 22:31:47
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I've been running a raid-5 set with three disks more or less
successfully for several months now. It took a little tweaking to get it
reasonably stable (with alot of help from the tweaks by Paul Ripke in
kern/20191). Last week I got myself another two disks, and went through
the process of backup up all my data to create a brand new shining
five-disk raid-5 array.
Apparently this was a mistake. It seems as if the bigger the diskspace,
the more unstable is RAIDFrame. So, does anyone have any piece of advice
to make this usable? Should I increase uvmexp.reserve_kernel even more?
What are the consequences of doing so? (it's set to 48 now, was thinking
of increasing it to 128).
The lack of working software raid-5 might even force me to migrate to
Linux (yuck..).
// Thomas
__________________________________________
T h o m a s H e r t z
Stockholm, Sweden CA: http://hz.se/ca.crt
phone: +46(707)276121 mail: thomas@hz.se
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<DIV><SPAN class=3D288062020-07092003><FONT face=3DTahoma size=3D2>I've =
been running a=20
raid-5 set with three disks more or less successfully for several months =
now. It=20
took a little tweaking to get it reasonably stable (with alot of help =
from=20
the tweaks by Paul Ripke in kern/20191). Last week I got myself =
another two=20
disks, and went through the process of backup up all my data to create a =
brand=20
new shining five-disk raid-5 array.</FONT></SPAN></DIV>
<DIV><SPAN class=3D288062020-07092003><FONT face=3DTahoma=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D288062020-07092003><FONT face=3DTahoma =
size=3D2>Apparently this was=20
a mistake. It seems as if the bigger the diskspace, the more unstable is =
RAIDFrame. So, does anyone have any piece of advice to make this usable? =
Should=20
I increase uvmexp.reserve_kernel even more? What are the consequences of =
doing=20
so? (it's set to 48 now, was thinking of increasing it to=20
128).</FONT></SPAN></DIV>
<DIV><SPAN class=3D288062020-07092003><FONT face=3DTahoma=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D288062020-07092003><FONT face=3DTahoma size=3D2>The =
lack of working=20
software raid-5 might even force me to migrate to Linux=20
(yuck..).</FONT></SPAN></DIV>
<DIV><SPAN class=3D288062020-07092003><FONT face=3DTahoma=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D288062020-07092003><FONT face=3DTahoma size=3D2>//=20
Thomas</FONT></SPAN></DIV>
<DIV><FONT face=3DTahoma size=3D2></FONT> </DIV>
<DIV align=3Dleft><FONT=20
color=3D#808080>__________________________________________</FONT></DIV>
<DIV align=3Dleft>
<TABLE id=3DAutoNumber1 style=3D"BORDER-COLLAPSE: collapse" =
borderColor=3D#111111=20
height=3D53 cellSpacing=3D0 cellPadding=3D0 align=3Dleft border=3D0>
<TBODY>
<TR>
<TD width=3D341 colSpan=3D2 height=3D16>
<DIV><B><FONT face=3DVerdana size=3D1>T h o m a s H e r t=20
z</FONT></B></DIV></TD></TR>
<TR>
<TD width=3D145 height=3D19><FONT face=3DVerdana color=3D#808080 =
size=3D1>Stockholm,=20
Sweden</FONT></TD>
<TD width=3D182 height=3D19><FONT face=3DVerdana color=3D#808080 =
size=3D1>CA: <A=20
=
href=3D"http://hz.se/ca.crt">http://hz.se/ca.crt</A></FONT></TD></TR>
<TR>
<TD width=3D145 height=3D18><FONT face=3DVerdana color=3D#808080 =
size=3D1>phone:=20
+46(707)276121</FONT></TD>
<TD width=3D182 height=3D18><FONT face=3DVerdana color=3D#808080 =
size=3D1>mail: <A=20
=
href=3D"mailto:thomas@hz.se">thomas@hz.se</A></FONT></TD></TR></TBODY></T=
ABLE></DIV>
<DIV><FONT face=3DTahoma size=3D2></FONT> </DIV></BODY></HTML>
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