From: Kernel Panic <cinap_lenrek@gmx.de>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] VIA VT8237 SATA/RAID i/o errors, dma doesnt work
Date: Fri, 8 Feb 2008 10:35:11 +0100 [thread overview]
Message-ID: <47AC224F.4090700@gmx.de> (raw)
In-Reply-To: <54b639a7eb08c31e4ef2a6d9fd7b6a62@quanstro.net>
Found out that the I/O errors can be triggerd by network traffic.
I was able to kill a dd by pingflooding the machine remotly :-)
This also explains why my dd script had not triggerd errors, but copying
arenas and vacing from remote machine did. I guess this is interrupt load
dependend.
I changed sdata.c to:
return SDretry if starting dmarequest fails,
return SDretry and reseting controller if dma times out,
return SDretry on request is done and error signaled,
and added a counter that resets the controller if a request
was 1000 times retried...
The machine ran the whole night with bodth drives in DMA and heavy load.
vacing, pingflooded from outside, ddtest on both drives and still alive! :-)
futher testing this weekend...
cinap
next parent reply other threads:[~2008-02-08 9:35 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <54b639a7eb08c31e4ef2a6d9fd7b6a62@quanstro.net>
2008-02-08 9:35 ` Kernel Panic [this message]
2008-02-08 14:55 ` erik quanstrom
2008-02-08 15:34 ` [9fans] VIA VT8237 SATA/RAID i/o errors, dma doesnt work (VIA Rhine II) Kernel Panic
2008-02-08 14:56 ` [9fans] VIA VT8237 SATA/RAID i/o errors, dma doesnt work Robert Raschke
2008-02-08 15:27 ` Robert Raschke
2008-02-06 17:58 [9fans] usb ohci support arrives -- another caution Sape Mullender
2008-02-06 19:23 ` [9fans] VIA VT8237 SATA/RAID i/o errors, dma doesnt work cinap_lenrek
2008-02-06 20:04 ` erik quanstrom
2008-02-06 22:29 ` cinap_lenrek
2008-02-06 22:40 ` erik quanstrom
2008-02-06 23:26 ` cinap_lenrek
-- strict thread matches above, loose matches on Subject: below --
2008-02-05 22:13 cinap_lenrek
2008-02-06 8:41 ` Kernel Panic
2008-02-06 9:45 ` erik quanstrom
2008-02-06 10:43 ` Kernel Panic
2008-02-06 11:03 ` erik quanstrom
2008-02-05 8:18 Kernel Panic
2008-02-05 8:54 ` Lorenzo Fernando Bivens de la Fuente
2008-02-05 13:20 ` erik quanstrom
2008-02-05 19:48 ` Robert Raschke
2008-02-06 2:01 ` arisawa
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