Ata driver timeout and Solaris 10 10/08

Good day,
My Solaris 10 10/08 installation is suffering from ata driver timeouts. The error messages are exactly the same as those documented in OpenSolaris Bug ID 6586621 (abort request,abort device,reset target,reset bus,early timeout in quick succession followed by "Vendor 'Gen-ATA ' error code: 0x3".
The underlying disks are QEMU disks in a XenServer HVM and the VM has two CPUs. Since the disks are actually files on an underlying RAID 10 array that is reported as healthy by the RAID controller, I would exclude hardware faults (other VMs run faultlessly).
The suggestion at http://justindthomas.wordpress.com/2008/12/22/xenserver-5-and-opensolaris-0811/ regarding the disabling of DMA use by the ata driver has not been effective.
Any pointer is welcome. I would also appreciate an evaluaton of the validity to my case of workaround 5 suggested at http://docs.sun.com/app/docs/doc/820-5245/fhknh?a=view (Solaris 10 10/08 release notes).
Many thanks for any help.
Cheers!

From what I have seen these errors are generated from the dvd-rom (ide device) not coming online fully or failing during boot. Sometimes the errors go away with a simple reboot, but they might re-appear on the next reboot. The only sure way to resolve this issue is to disconnect the dvd drive.
I am trying to find a an alternative to physically disconnecting the dvdroms, looking for a way way to disable the dvd from being detected.

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<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by I'm clueless:
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null

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Quote from: Bas on 29-November-09, 05:41:33
You can always add a ATA controller card to extend it.
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miinna,
Did you ever figure out the problem?
I am working on a friends mac and it has the same exact issue. For some reason my Lion hard drive boots as ab internal, but any blank or snow leopard drive won't even show up in the disk utilitiy. I can install/read from an external drive. I get the same "there was an error while scanning for serial-ata devices" error.
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Has my hard drive failed, and if so can I replace it myself?

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Thanks to 'um' and BGreg for the helpful replies. I think I'll go for a new hard drive now. Although I'm not entirely confident inside the guts of a laptop (having looked at the iFixit guide, which does show things fairly clearly) I am less confident with my local Apple Centre for returning the laptop as 'fixed' when it clearly wasn't. They want about £50 to do the work on top of the drive cost too.
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Lots to read, then order the drive. After that I've got to fit the thing, and my work shifts don't leave me much free time right now, but I'll drop back online when it's done and let you know how it went – or maybe ask for help if it goes pear-shaped!
Thanks a lot guys!
Bruce

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Ata driver timeout and Solaris 10 10/08

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