kern/135408: [aac] Adaptec 5405 RAID controller hanging under high load +suggested fix

[Yuri Gorchakov]

The following reply was made to PR kern/135408; it has been noted by GNATS.

From: Yuri Gorchakov <yuri.gorchakov at ittomsk.ru>
To: bug-followup at FreeBSD.org, freebsdusb at bindone.de
Cc:  
Subject: Re: kern/135408: [aac] Adaptec 5405 RAID controller hanging under
 high load +suggested fix
Date: Tue, 08 Dec 2009 21:38:08 +0600

 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA1
 
 Hi all,
 
 I'm still having this issue with the controller, latest firmware (5.2-0
 (17517)) and drivers (2.2-8 (17517)) don't fix the problem, but Adaptec
 suggested me to turn off write cache (switch it into write throught) on
 the controller (smth like arcconf SETCACHE 1 LOGICALDRIVE 0 wt) - so I
 did that and now I'm able to highly load the server with no problems.
 Current uptime after this change is 15 days.
 I didn't measure the performance penalty though.
 - --
 С уважением,
 Юрий Александрович Горчаков
 директор "Информационные технологии - Томск"
 
 Адрес:	634050, г.Томск, пер.Нахановича, д.12, оф.502
 Тел.:	+7 (3822) 332-382
 e-mail:	info at ittomsk.ru
 	yuri.gorchakov at ittomsk.ru
 www:	http://ittomsk.ru
 PGP:	http://ittomsk.ru/yuri.gorchakov@ittomsk.ru.pub.asc
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.13 (FreeBSD)
 Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
 
 iQEcBAEBAgAGBQJLHnLgAAoJEHVbG2nsBnbiH9oH/RowqbsEwz6XoHEwCA05CSEQ
 wz15UF7qv9NTOGxcSOQYj1fnzMQSe+mVb1BollA8/KK5RPqMQmGsO8kjN2pFKDT9
 1ksxqDRXh+ybzRqJYi4hiC0XHByfVHjJ04sthnAcMBUUw7UpIzvNXGtHDpj+GyhL
 jL7qK2a0OiTg4iUBZM6EpJ4mokwq2UWv/CVJki8/ta7lZ/aIy9QjrhQlaoSthxbo
 xtutpsoBeB8ZHjWR/ItS8xE+g22cCwk4ozqZLMQLwabC8NkhNOpr0XlcV4LKHX7D
 7bVc9e/+osZWFAmJTyLAJ72Wgo1yQTzAGjKIIxS4ByDFZbNpybr6b4EP297EUfo=
 =GHZj
 -----END PGP SIGNATURE-----