[uanog] Re: Фря и SATA RAID

22 Apr 2004


      On Tue, 20 Apr 2004, Igor Karpov wrote:
...
Вдогонку своему письму пошлю ещё одно своё же (этого не было в uanog).
-----------------
S875WP1LX "WinterPark"
...
В работе... Тут труднее сказать. С ней были проблемы. Самое скверное то,
что я так и не могу сказать, с чем. Под нагрузкой появлялись таймауты на
разных дисках. Иногда наблюдались спонтанные перезагрузки. В конечном
итоге мы, не мудрствуя лукаво (достала уже, было не до выяснения
деталей), заменили память, шлейфы и перепрошили биос.
С того момента никаких нареканий на неё нет.
-----------------
Это из переписки со мной :).

2bar@ Подтверждамс, работает. Достаточно одной таблэтки
^W перепрошики биоса на свежую версию - и всё поехало. 5.2.1-R.
btw, Promise TX2+ нифига не опознался 4.10-BETA.
...
И кусок ещё из одного:
Valentin Nechayev wrote:
...
Wed, Mar 24, 2004 at 17:10:19, vadya wrote about "[freebsd] Re:
Freebsd 4.9 & sata ( ICH5)":
...
Имели опыт тестирования свежего 4-STABLE с sata контроллеры ICH5 и
Promise. Опыт негативный.
Если ты про ту установку, что мы вместе мучили, то там была проблема
более
хитрая. Я боюсь, что ICH5 разные бывают.
Наверняка. После обновления прошивки для материнской платы ICH5 стал
называть себя ICH5R и даже заявил, что он теперь умеет RAID-0 и RAID-1
(не проверялось). Странная получилась motherboard - два (!) бортовых
рэйда, Promise и ICH5R... Кстати, сегодня в -stable мелькнуло:
-------- Original Message --------
Subject: Announce FreeBSD -stable Promise SATA and Intel ICH SATA patches
Date: Thu, 25 Mar 2004 15:28:03 -0800 (PST)
From: Doug Ambrisko 
To: freebsd-stable@freebsd.org
I've added support for the Promise SATA TX2/TX4 cards and Intel ICH5/6300ESB
SATA chips.  The big challenges that SATA errors tend to lock-up the
system unless you read the SATA registers or deal with the controller
errors via their error registers.  If you ignore them and just
continue with normal ATA controller commands the system will lock up.
Some functions need to be renamed.  The patch set it at:
     http://www.ambrisko.com/doug/ata/ata_stable_sata_2.patch
and applies src.  A make world is a good idea.
Here is the README at the top of the patch set:
The basic Promise support came from -current.  Everything else was
developed in -stable and trying not to change the core -stable code to
reduce maintainance burdens.  The goal was to make the most minimal
changes to -stable as possible and at the same time create a robust system
to deal with disk failures.
Thanks to Promise for programing information. ICH SATA support came
from the Intel doc's.
Features added/bug fixes:
       -    Support for Promise SATA TX2/TX4 controllers mostly from
-current
       -    Support for reading hot-swap evens and tearing down the device
     when removed.  A few kernel panics fixes when things disappear.
       -    Changing the ata system so it mostly runs out from under splbio
     so that we can get interrupts to tell us a drive is gone.  If that
     is ignored then the controller can lock up the system.  This
     required a work thread to run through channel requests.  A shim
     to ata_start was used to implement this.  This gets the
     code-excution path away from splbio.
       -    Clamping the size of the disk when making a RAID.
       -    The ATA_IN/ATA_OUT macros were re-done so that the existing
     code would not need to be modified.  It was was more space
     in the softc to hold the arrays for the memory regions.  This is
     better to reduce maintainance burden.  Minor code changes in
     allocation clean-up had to be changed.
       -    MFC of addspare.
       - add support for SATA error handling of ICH5 & 6300ESB (we need
     to read the SATA registers.  Note we could detect hot swap
     if we polled on the sstatus register.  Map SATA drives into
     which parts of the controller they are on.
       -    the Promise channel needs to be reset on error (such as a
     media error) or it will hang on further I/O (ie. in ata_intr)
       -    Fixed a PIO bug in which there is an under-flow & buffer
over-flow
     bug.
       -    On media error don't fall back to PIO on some the Intel SATA or
     Promise SATA devices.  This doesn't help much and kill performance.
     Fail out I/O straight from DMA mode gracefully.
       -    Add some more ICH device ID's.  Update to new ICH UDMA flags.
Potential Issues/brokeness
       -    kernel core dumps should work not tested
       -    Tagged Queuing should work not tested
Known issues:
       -    The RAID doesn't automatically rebuild need to run "atacontrol
     rebuild ar0" sort-of works.
Let me know of any success or failures using this patches.  I will be
working
on bringing these features into -current.  My target deployment for this
was -stable.
Thanks,
Doug A.
На сегодня uptime у этой машины небольшой, 22 дня. Но полёт нормальный.
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-- 
Regards,
Alex V. Belinsky	[FOZZ-RIPE] [FOZZ-UANIC]
CTO, ISP KievWeb(R)	    http://kievweb.ua
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