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List:       freebsd-fs
Subject:    Re: Marvell 88SX6081 timeouts, particularly when running 'zfs scrub'
From:       Jeremy Chadwick <freebsd () jdc ! parodius ! com>
Date:       2011-07-21 4:40:38
Message-ID: 20110721044038.GA57436 () icarus ! home ! lan
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On Wed, Jul 20, 2011 at 08:59:32PM -0700, Michael DeMan wrote:
> I've found a few posts around about this, but nothing conclusive.
> 
> We have been getting hit on this with two...
> mvs0: <Marvell 88SX6081 SATA controller> port 0x9400-0x94ff mem \
>                 0xfc400000-0xfc4fffff irq 28 at device 1.0 on pci1
> mvs1: <Marvell 88SX6081 SATA controller> port 0x9800-0x98ff mem \
>                 0xfc500000-0xfc5fffff irq 29 at device 3.0 on pci1
> ...controllers.
> 
> I went through and did a few things (an older Opteron 285 box) and disabled \
> super-pages and permutations on other device.hints, loader.conf and live sysctl \
> settings -  all to no avail. 
> I also found a few things via Google about being to patch from 9-CURRENT, but the \
> idea with this box was to be able to re-purpose some older equipment for proof of \
> concept using FreeNAS8. 
> It is possible for me to build a version of that with the patches, etc - but I \
> figured it would be better to post to the list first and gather feedback since this \
> is pretty old/clunky hardware and newer patches may or may not solve the problem. 
> Thanks,
> 
> - mike deman
> 
> 
> 
> Jul 19 16:46:41 freenas kernel: mvsch11: Timeout on slot 0
> Jul 19 16:46:41 freenas kernel: mvsch11: iec 02000000 sstat 00000123 serr 00000000 \
>                 edma_s 00001023 dma_c 00000000 dma_s 00000000 rs 00000201 status 40
> Jul 19 16:46:41 freenas kernel: mvsch11:  ... waiting for slots 00000200
> Jul 19 16:46:43 freenas kernel: mvsch4: Timeout on slot 4
> Jul 19 16:46:43 freenas kernel: mvsch4: iec 02000000 sstat 00000123 serr 00000000 \
>                 edma_s 00001022 dma_c 00000000 dma_s 00000000 rs 00000010 status 40
> Jul 19 16:46:45 freenas kernel: mvsch1: Timeout on slot 0
> Jul 19 16:46:45 freenas kernel: mvsch1: iec 02000000 sstat 00000123 serr 00000000 \
>                 edma_s 00001101 dma_c 00000000 dma_s 00000000 rs 00000001 status 40
> Jul 19 16:46:46 freenas kernel: mvsch11: Timeout on slot 9
> Jul 19 16:46:46 freenas kernel: mvsch11: iec 02000000 sstat 00000123 serr 00000000 \
>                 edma_s 00001023 dma_c 00000000 dma_s 00000000 rs 00000201 status 40
> Jul 19 16:46:47 freenas root: ZFS: checksum mismatch, zpool=zpmir1 \
> path=/dev/gpt/ada12 offset=52341838336 size=131072

You didn't disclose what FreeBSD version you're running and what your
kernel/world build date is.  It matters greatly since it will then give
us some idea what exact source revision you're using for the mvs(4)
driver.  "uname -a" output is sufficient.

Thanks.

-- 
> Jeremy Chadwick                                jdc at parodius.com |
> Parodius Networking                       http://www.parodius.com/ |
> UNIX Systems Administrator                   Mountain View, CA, US |
> Making life hard for others since 1977.               PGP 4BD6C0CB |

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