Re: RAID5 controller

1997-08-08 Thread Jean Pierre LeJacq
On Thu, 7 Aug 1997, Markus Diesmann wrote:

 However I have to warn you.
 There is currently no support of the rpc.lockd daemon
 under linux.
 
 So using a Linux system as a file server for SUN and SGIs
 will bring you into trouble.
 file locking is expected in some later kernel versions which
 are not stable yet.

Would this explain the NFS problems I'm having serving SUN machines?

-- 
Jean Pierre



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Re: RAID5 controller

1997-08-08 Thread Jean Pierre LeJacq
On Thu, 7 Aug 1997, Dave Cinege wrote:

 On Thu, 7 Aug 1997 11:23:13 -0700, Kevin Traas wrote:
 
  can anyone recommend a couple of tried and true RAID5 controllers
 i could price out?
 
 I've used the Mylex DAC960 PCI (3 and 5 channel).  Very happy with them -
 but pricy.  However, I've never used these under Linux, only SCO Unix and
 
 They don't work under linux, and also they are very slow performers, from 
 the comparisons I've seen.
 
 The best RAID HBAs you can get are DPT. They work 100% under linux and I'd 
 be happy to sell you one...

I've been using the DPT controller with Debian but only for RAID 1.
I've had no trouble except for the e2fsprog bug.  The RAID
functionality is implemented in hardware and appears as a normal disk
to Debian.  The only downside I've seen is that DPT's configuration
software is not available for Linux.

-- 
Jean Pierre



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Re: RAID5 controller

1997-08-08 Thread Markus Diesmann
I am not sure what problems you actually had,
but I think so.

I heard that people are working on kernel support for
proper file locking.
Unfortunately we do not have the knowledge and resources
to help them.
We have found an acceptable indermediate solution, where
main file serving is done by a Linux system and mail 
directories are provided by an SGI Indy.

Markus Diesmann
Neurobiology  Biophysics
Freiburg
Germany


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Re: RAID5 controller

1997-08-08 Thread Jean Pierre LeJacq
On Fri, 8 Aug 1997, Markus Diesmann wrote:

 I heard that people are working on kernel support for
 proper file locking.
 Unfortunately we do not have the knowledge and resources
 to help them.
 We have found an acceptable indermediate solution, where
 main file serving is done by a Linux system and mail 
 directories are provided by an SGI Indy.

Thanks Markus for the update.

It does sound like this could be the issue.  I have no problems
serving read-only file systems.  On read-write file systems the Sun
boxes seem to misinterpert the modes, permissions, and types of the
files.

-- 
Jean Pierre



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Re: RAID5 controller

1997-08-08 Thread Dave Cinege
On Fri, 8 Aug 1997 07:34:41 -0400 (EDT), Jean Pierre LeJacq wrote:

I've been using the DPT controller with Debian but only for RAID 1.
I've had no trouble except for the e2fsprog bug.  The RAID
functionality is implemented in hardware and appears as a normal disk
to Debian.  

I should also mention it appears to be a normal disk to ANY OS that DPT 
supports. On my RAID 0 array I boot OpenDOS, NT(or should I say have booted 
for this one : ), OS/2, and Linux using OS/2's bootmanager.

The only downside I've seen is that DPT's configuration
software is not available for Linux.

Not YET. According to Mike Neuffer (eata driver author) (storage manager) 
is work in progress

-
http://www.psychosis.com/emc/   Elite MicroComputers   908-541-4214
http://www.psychosis.com/linux-router/  Linux Router Project


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Re: RAID5 controller

1997-08-07 Thread Markus Diesmann
I can recommend, and we have in use the

IFT 3102U   (32MB) 
Raid Controller

Infotrend Technology, Inc

However I have to warn you.
There is currently no support of the rpc.lockd daemon
under linux.

So using a Linux system as a file server for SUN and SGIs
will bring you into trouble.
file locking is expected in some later kernel versions which
are not stable yet.

Markus


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Re: RAID5 controller

1997-08-07 Thread Kevin Traas
 can anyone recommend a couple of tried and true RAID5 controllers
i could price out?

I've used the Mylex DAC960 PCI (3 and 5 channel).  Very happy with them -
but pricy.  However, I've never used these under Linux, only SCO Unix and
WinNT.  However, I can't see there'd be a problem as long as Linux supports
the hardware (which I'm not sure) - all RAID functions happen in hardware
and are transparent to the OS.

Later,

Kevin Traas   Baan Business Systems
Systems Analyst  Langley, BC, Canada
[EMAIL PROTECTED]  (604) 882-8169



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Re: RAID5 controller

1997-08-07 Thread Dave Cinege
On Thu, 7 Aug 1997 11:23:13 -0700, Kevin Traas wrote:

 can anyone recommend a couple of tried and true RAID5 controllers
i could price out?

I've used the Mylex DAC960 PCI (3 and 5 channel).  Very happy with them -
but pricy.  However, I've never used these under Linux, only SCO Unix and

They don't work under linux, and also they are very slow performers, from 
the comparisons I've seen.

The best RAID HBAs you can get are DPT. They work 100% under linux and I'd 
be happy to sell you one...


-
http://www.psychosis.com/emc/   Elite MicroComputers   908-541-4214
http://www.psychosis.com/linux-router/  Linux Router Project


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