Stefan wrote:
Okay, I had time to set this up. I'm attaching the log messages I got via netconsole. I tested about 20h with adma disabled, the crash won't occur. If I remove sata_nv.adma=0 from boot options again it doesn't take long until my machine locks up. [Attached dmesg output with 2.6.21.1 kernel + crash info I got via netconsole] I hope this is useful to you guys.
It looks like you've got SError bits set from the controller, 0x200000 means link layer CRC error (btw, we really should be decoding that error and printing it in human readable form rather than making people pore through the SATA spec and count bits). First thing you should try is replacing the SATA cable to that drive.
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