Re: Kernel Dump when accessing second drive
On Mon, May 17, 2010 at 12:13:55AM -0700, Dylan Reinhold wrote:
> May 15 15:53:37 backup_a kernel: ad6: TIMEOUT - READ_DMA retrying (1
> retry left) LBA=49814018
> May 15 15:53:38 backup_a kernel: ad6: WARNING - READ_DMA soft error
> (ECC corrected) LBA=49871650
> May 15 15:53:38 backup_a kernel: ad6: WARNING - READ_DMA UDMA ICRC
> error (retrying request) LBA=49871682
> May 15 15:53:38 backup_a kernel: ad6: timeout waiting to issue command
These messages usually indicate problems on the harddisk. You may also
want to check the cable or the power supply.
> May 15 15:55:42 backup_a syslogd: kernel boot file is /boot/kernel
> May 15 15:55:42 backup_a kernel: ad6: FAILURE - device detached
> May 15 15:55:42 backup_a kernel: subdisk6: detached
> May 15 15:55:42 backup_a kernel: ad6: detached
>
> Does this mean the controller is reporting the disk is gone?
When the driver detects a timeout on a device, it attempts to
reinitialize the children, and if that fails, the driver gives up
and tries to detach it --- at least that's how I read the code.
Cheers.
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