Date: Mon, 20 Jun 2011 15:46:56 +0400 From: Andrey Chernov <ache@FreeBSD.ORG> To: Kostik Belousov <kostikbel@gmail.com> Cc: Eir Nym <eirnym@gmail.com>, "Justin T. Gibbs" <gibbs@FreeBSD.ORG>, "Kenneth D. Merry" <ken@FreeBSD.ORG>, current@FreeBSD.ORG, will@FreeBSD.ORG Subject: Re: Exactly that commit (was Re: Latest -current 100% hang at the late boot stage) Message-ID: <20110620114656.GA83524@vniz.net> In-Reply-To: <20110620080146.GF48734@deviant.kiev.zoral.com.ua> References: <20110619160148.GA35431@vniz.net> <BANLkTim5CyWOHThk45tgvMgcivF54QNuHQ@mail.gmail.com> <20110619165328.GA35872@vniz.net> <BANLkTimCegAu0ERJyLaCqen0=F%2BbWMDBNw@mail.gmail.com> <20110619232307.GA57530@vniz.net> <20110620001912.GA60252@vniz.net> <4DFEAD4F.1040603@FreeBSD.org> <20110620070222.GA74009@vniz.net> <20110620080146.GF48734@deviant.kiev.zoral.com.ua>
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[-- Attachment #1 --] On Mon, Jun 20, 2011 at 11:01:46AM +0300, Kostik Belousov wrote: > On Mon, Jun 20, 2011 at 11:02:22AM +0400, Andrey Chernov wrote: > > On Sun, Jun 19, 2011 at 08:15:43PM -0600, Justin T. Gibbs wrote: > > > On 6/19/11 6:19 PM, Andrey Chernov wrote: > > > > Exactly that commit is responsible for boot hang. > > > > Please fix. > > > > BTW, I have MBR on SATA disk (CAM emulated), ICH9. > > > > > > Since it works for me, you'll need to provide more information. Can you > > > at least drop into kdb to determine the likely source of the hang by > > > getting a stack trace of all processes to see where they are sleeping > > > and dumping lock information? > > > > I drop into DDB and put 'bt' console photo in the very first message of > > this thread - nothing unusual seen in the main stack. Could you please > > specify exact DDB commands you want to be issued by me? No dump can be > > provided since nothing is mounted yet including swap, > > > > BTW, I remember I saw previously unseen warnings with post Jun 14 kernels: > > "xpt_action_default: CCB type 0xe not supported" > > > > 'ps' inside DDB shows [xpt_thrd] at "ccb_scan" wmesg state and [g_event] > > at "caplck" wmesg state, [kernel] at "g_waitid" state. > > Even don't know, if it matters. > > Just in case, please try r223277. As the second message in the thread states, I try first even 223296 with the same hang and the same xpt_action_default: CCB type 0xe not supported As I think, DDB's 'ps' indicates that kernel waits something from geom and geom waits something from ccb_scan forever, just raw guess. I will be glad to issue more specific DDB commands and upload corresponding photos. BTW, pluging and unplugging USB devides works in that stage. -- http://ache.vniz.net/ [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (FreeBSD) iEYEARECAAYFAk3/MzAACgkQVg5YK5ZEdN0EUgCeJcWde6pAFDw2UXq82RRczav7 pRQAniNFKX5eXWPWZ87g2oKuBVDWoejR =Ytr9 -----END PGP SIGNATURE-----
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