RAID Controller problems (was: Re: kern.ipc.maxpipekva ...)

Raphael H. Becker rabe at
Mon Aug 28 11:36:12 UTC 2006


I've also seen this "kernel: kern.maxpipekva exceeded, please see
tuning(7)" on the console of our Dell PE6650, which (again) had lost its 
amr (LSI RAID/Perc). This machine isn't under load but runs rsync every 5

amr0 at pci3:1:0:  class=0x010400 card=0x05181028 chip=0x19601000 rev=0x01 hdr=0x00
    vendor   = 'LSI Logic (Was: Symbios Logic, NCR)'
    device   = 'MegaRAID'
    class    = mass storage
    subclass = RAID

# uname -srm
FreeBSD 6.1-RELEASE-p3 i386

 ... with just this KERNCONF:

include GENERIC

ident PE6650

options SMP
options         COMPAT_FREEBSD4
options         COMPAT_FREEBSD5

The amr seems more stable since "Scott's Mega Update" (see: )
but probably under high load or after a while it still fails (no disk
access possible, no messages).

Has anyone else running a Dell PE6650 with this LSI RAID? 
Anyone else got this errors?

Raphael Becker

On Thu, Jun 22, 2006 at 12:17:12PM -0300, Marc G. Fournier wrote:
> I've read the comments in /usr/src/sys/kern/sys_pipe.c, but couldn't see 
> anything in there ... I'm up to 32M (as set through /boot/loader.conf) and 
> am still hitting the max after a period of time (latest was 7 hours) ...
> Figuring that the last time I checked, I was using something like 7000 
> pipes, @ 16k each, I should be setting it closer to 128M, and that is 
> assuming no 64k pipes ...
> So, is there an 'upper max' that it won't allow me to set it past?
> Thanks ...
> ----
> Marc G. Fournier           Hub.Org Networking Services (
> Email . scrappy at                              MSN . scrappy at
> Yahoo . yscrappy               Skype:        ICQ . 7615664
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