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Old 01-08-2008, 10:38 PM
"Wood, Brian J"
 
Default Adaptec HostRAID ddf1 on Supermicro X7DBR-i+

>-----Original Message-----
>From: ataraid-list-bounces@redhat.com
[mailto:ataraid-list-bounces@redhat.com] On Behalf Of Heinz
>Mauelshagen
>Sent: Friday, December 21, 2007 7:40 AM
>To: ATARAID (eg, Promise Fasttrak, Highpoint 370) related discussions
>Subject: Re: Adaptec HostRAID ddf1 on Supermicro X7DBR-i+
>
>On Tue, Dec 18, 2007 at 04:18:55PM -0500, Phillip Susi wrote:
>> Andrew Peabody wrote:
>>> Hi Everyone,
>>>
>>> First I want to say that dmraid was been a wonderful tool for use.
We use
>>> it with many Sun X2100s, and other motherboards with great success.
The
>>> only feature we really miss is an option like mdmonitor to notify us
if
>>> there is a problem with an array.
>>
>> Currently dmraid has no error handling capability, so you probably
don't
>> want to use it on a server needing fault tolerance.
>
>This is being implemeted with the kind help of Intel
>and will be released ASAP next year.

I have some packages for event monitoring available, but no where to
host it at the moment (no outward facing Intel site to post it too that
is). I also have a number of documents I've written that help a user new
to dmraid setup everything they will need to get raid array event
monitoring running.

Here is a sample of what will be reported to the syslog using these
packages when an I/O error is encountered:

Jan 7 06:40:55 dmraid-devhost dmeventd[3254]: Processing Raid Volume
"isw_eecebgiia_raid0" for Events
Jan 7 06:40:55 dmraid-devhost dmeventd[3254]: Stripe device, 8:16
(/dev/sdb) has reported an I/O
error.
Jan 7 06:40:55 dmraid-devhost dmeventd[3254]: The kernel has recorded
7 event(s) against this
device.
Jan 7 06:40:55 dmraid-devhost dmeventd[3254]: Associated Userspace
Names: /dev/sdb=Disabled /dev/sdc=Active
Jan 7 06:40:55 dmraid-devhost dmeventd[3254]: Associated SATA Port
Mapping: /dev/sdb=2 /dev/sdc=3
Jan 7 06:40:55 dmraid-devhost dmeventd[3254]: Associated UUID:
DMRAID-isw_eecebgiia_raid0
Jan 7 06:40:55 dmraid-devhost dmeventd[3254]: End of event processing
for Raid Volume
"isw_eecebgiia_raid0"

It will tell you the specific hardware device in the raid set that is
failing using three ways: the major:minor number, the associated
userspace name, and finally the port number on the mainboard that the
SATA device is connected to.

All of this is done using kernel driver patches (Jonathan Brassow's
mirror patches, Heinz Mauelshagen's raid 4/5 patch, and my raid 0
patches) along with a DSO and a registration tool that I've put
together. (The utility is used to load/register the DSO with the
dmeventd monitoring daemon.)

I've also written special logwatch scripts to be used with this setup
(for use by system admins and have documents to help with complete setup
for that also). Here is a sample of what an email alert would look like
when a dmraid I/O error is encountered:

################### Logwatch 7.3.4 (02/17/07) ####################
Processing Initiated: Mon Jan 7 06:41:01 2008
Date Range Processed: today
( 2008-Jan-07 )
Period is day.
Detail Level of Output: 5
Type of Output: unformatted
Logfiles for Host: dmraid-devhost.localdomain
################################################## ################
--------------------- Dmeventd Errors Begin ------------------------
There were a total of 7 new log entries
Date Message
------------------------
Jan 7 06:40:55: Processing Raid Volume "isw_eecebgiia_raid0" for Events
Jan 7 06:40:55: Stripe device, 8:16 (/dev/sdb) has reported an I/O
error.
Jan 7 06:40:55: The kernel has recorded 7 event(s) against this
device.
Jan 7 06:40:55: Associated Userspace Names: /dev/sdb=Disabled
/dev/sdc=Active
Jan 7 06:40:55: Associated SATA Port Mapping: /dev/sdb=2 /dev/sdc=3
Jan 7 06:40:55: Associated UUID: DMRAID-isw_eecebgiia_raid0
Jan 7 06:40:55: End of event processing for Raid Volume
"isw_eecebgiia_raid0"
---------------------- Dmeventd Errors End -------------------------
###################### Logwatch End #########################

I'm hoping that this is something that users of dmraid will find useful.
(Note: this is beta software that has had quite a bit of internal
testing, but your mileage may vary out in the real world.)

Thanks,

Brian W.

>
>Heinz
>
>>
>> _______________________________________________
>> Ataraid-list mailing list
>> Ataraid-list@redhat.com
>> https://www.redhat.com/mailman/listinfo/ataraid-list
>
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-=-=-=-
>
>Heinz Mauelshagen Red Hat GmbH
>Consulting Development Engineer Am Sonnenhang 11
>Storage Development 56242 Marienrachdorf
> Germany
>Mauelshagen@RedHat.com PHONE +49 171
7803392
> FAX +49 2626 924446
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-=-=-=-
>
>_______________________________________________
>Ataraid-list mailing list
>Ataraid-list@redhat.com
>https://www.redhat.com/mailman/listinfo/ataraid-list

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