Messages in this thread | | | Date | Mon, 17 Nov 2008 00:07:11 +0100 | From | "J.A. Magallón" <> | Subject | Re: sata-nv and 790i |
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On Sun, 16 Nov 2008 15:11:20 +0900, Tejun Heo <tj@kernel.org> wrote:
> J.A. Magallón wrote: > > Hi all... > > > > I recently put my hands on a system with an ASUS P5N64 WS Pro mobo: > > > > http://www.asus.com/products.aspx?l1=3&l2=11&l3=653&l4=0&model=2182&modelmenu=1 > > > > It has a nForce 790i Ultra SLI chipset, the part for the SATA controller > > is MCP55. > > > > The problem is that linux seems to fail to read the hard drive on boot. > > I will explain. > > > > I have tried to install both CentOS 5.2 and Mandriva 2009.0. > > For CentOS (has a 2.6.18 kernel), the install seems ok, but when I reboot > > into the just intalled system the kernel hangs just after printing > > the name of the initrd. Mandriva (2.6.27-rc8) just hungs half the install process. > > Live versions of both hang on boot saying they can not find the root > > device. > > > > I have found some messages in the net about the MCP55 in that board not > > being completeley suppported as AHCI in sata_nv, and that some other > > boards work puttin the SATA controller in 'compatible' mode (with > > loss of performance). > > But I can't find any setting in the P5N64 to put SATA in Compat mode. > > > > Can I do this via some kernel parameters ? > > Somabody has this board working ? Do current kernels have better support > > for this chipset ? > > All three flavors of sata_nv's - generic (yours), nf2/3 and ck804 - had > various detection problems from 2.6.27-rc1. The problem was that their > hardresets all worked differently. 2.6.27-rc1 started to favor > hardresets over softresets and exposed this problem. While trying to > fix the problem, because all three flavors unexpectedly showed different > hardreset behaviors, there were some mistakes. A proper fix is included > in upstream and is queued for -stable. Sorry about the mess. >
Thanks for the info. Just a couple more questions (I have to say to our sysdamins if it can be done or not... :) ).
The point on hardresets clarifies the Mandriva case, where I have an 27-rc8 kernel. But what about the CentOS case ? If problems begun with rc1, what happens with plain 2.6.18 ? It just doesn't have support for that controller ? But installer works...
Is this the patch in question:
http://marc.info/?l=linux-kernel&m=122584322811935&w=2 http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git;a=commitdiff;h=814eb57e1799337d9fbb68f5d838afa507dc014e;hp=7bee179aa2a63087ff80bdd7dcb8bd6da209f359
So I suppose that 2.6.27.5 includes this fix. Can I guess if a kernel would work looking for this code in the source ?
With this info, I can presume that current Mandriva Cooker would work (it has a .5 kernel), and could check if CentOS people have backported it in its updates...or do it myself (some CentOS people listening ...? ). I probably need to install CentOS, its the 'officially supported' distro in our department.
TIA
-- J.A. Magallon <jamagallon()ono!com> \ Software is like sex: \ It's better when it's free Mandriva Linux release 2009.1 (Cooker) for x86_64 Linux 2.6.27.5-desktop-1mnb (gcc 4.3.2 (GCC) #1 Sun Nov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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