Date: Wed, 28 Apr 2010 18:02:05 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Andy Farkas <chuzzwassa@gmail.com> Cc: freebsd-scsi@freebsd.org, Scott Long <scottl@FreeBSD.org>, freebsd-stable@freebsd.org Subject: Re: MFC of "Large set of CAM improvements" breaks I/O to Adaptec 29160 SCSI controller Message-ID: <4BD84DED.2060209@FreeBSD.org> In-Reply-To: <i2hff80e6381004270143q4ebd10c6pb6dafd6128e47607@mail.gmail.com> References: <i2hff80e6381004270143q4ebd10c6pb6dafd6128e47607@mail.gmail.com>
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Andy Farkas wrote: > RELENG_8 csup'd with date=2010.02.14.00.00 works perfectly for days. > > RELENG_8 csup'd with date=2010.02.15.00.00 dead-locks the disk I/O > subsystem. Network still operational but anything needing disk hangs. > Power-cycle required. > > kernel config is GENERIC with KDB, DDB and BREAK_TO_DEBUGGER options added. > > hardware: > ahc0: <Adaptec 29160 Ultra160 SCSI adapter> port 0x4000-0x40ff mem > 0xefa00000-0xefa00fff irq 16 at device 0.0 on pci10 > ahc0: [ITHREAD] > aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs > > da0: <SEAGATE ST3146707LW 0005> Fixed Direct Access SCSI-3 device > da1: <SEAGATE ST3146707LW 0005> Fixed Direct Access SCSI-3 device > > > The dead-lock can happen at any time, but I can provoke it by running > a bonnie++ disk test. It happens doing rm -rf /usr/obj/usr and it has > happened doing a make installworld. It can survive a make buildworld > (the system runs normally until it decides to dead-lock). > > The box (HP ProLiant ML 110) has 2 scsi disks and 4 sata disks. The > 2010.02.15 kernel will run perfectly for days on the SATA disks. *Only* > when the scsi disks are accessed will the system dead-lock. Note that > the SATA disks do not work either if the system has dead-locked. > > I can provide more details and a vmcore.0 if anyone is interested. I have some 29160N locally and I'll try to reproduce this. -- Alexander Motin
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