Date: Thu, 28 May 2009 17:40:38 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: Gavin Atkinson <gavin@FreeBSD.org>, triosoft@triosoft.com.ua Cc: freebsd-current@FreeBSD.org Subject: Re: ATA_STATIC_ID and AHCI bug or /dev/hands ? Message-ID: <4A1EA266.3030204@icyb.net.ua> In-Reply-To: <1243345552.80806.20.camel@buffy.york.ac.uk> References: <1d05d65670fbc0f7e84d8b42351c63aa.squirrel@webmail.ic.uz.ua> <1243345552.80806.20.camel@buffy.york.ac.uk>
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on 26/05/2009 16:45 Gavin Atkinson said the following: > On Sun, 2009-05-24 at 21:41 +0300, triosoft@triosoft.com.ua wrote: >> Hello! >> >> I found some odd behavior of ata device numbering. It seems, that there >> is no effect of option ATA_STATIC_ID in CURRENT. >> What I have: >> supermicro server with 4 sata ports onto Intel ICH7 SATA300 controller >> recent CURRENT >> sata mode in BIOS is Enhanced >> ahci support in BIOS in Enabled >> option ATA_STATIC_ID in KERNCONF >> >> So, if I boot with 4 HDD connected to sata i found ad4,ad6,ad8,ad10 as >> disks. but when I detach disk, which "was" ad8 in last case, and then >> reboot - I see ad4,ad6,ad8! and not ad4,ad6,ad10! atacontrol list >> doesn't show an empty ata channel. Only channels with HDDs connected. I >> check 6.x 7.x on the same server with _the same configuration in bios_ - >> and all works as suspected - there are empty ata channels, there are >> really static device numbers. when I set AHCI to Disabled I have just >> two ata channels (with AHCI - I have four, one for each sata disk) and >> with or without HDDs connected I see empty channels and have really >> static dev nums in the same CURRENT. >> So my question is - is it my fault? does I miss something? Or it is a bug? > > This sounds like a bug to me. I think you're probably best submitting a > PR, and please include (or link to) a verbose dmesg from both 7.x and > HEAD, and the output of "atacontrol list" from both. BTW, I can not reproduce this. I also have ATA_STATIC_ID in *both* kernel configurations (emphasis is just n case). My hardware is ICH9R-based. AHCI is enabled. Both recent head and stable/7 enumerate drives exactly the same (ad6, ad10, ad16). -- Andriy Gapon
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