Christian wrote:
>
> FYI:
> My system config is one 400GB disk at sda, and two 250GB disks on a dmraid
> nvidia-fakeraid set of sdb and sdc.
>
> My kernel message buffer gets quickly overrun by a flood of these error
> messages:
>
> Nov 17 22:48:12 ubuntu kernel: [ 119.566540] attempt to access beyond end of
> device
> Nov 17 22:48:12 ubuntu kernel: [ 119.566602] sdb: rw=0, want=976784000,
> limit=488397168
This seems like some other issue. For some reason the kernel is trying to access something way out at about 465GB on the /dev/sdb device..
> p.s:
> Why does the kernel report a queue depth of 31/32, but hdparm says its 32? Is
> this correct?
>
> ata1.00: ATA-7, max UDMA7, 781422768 sectors: LBA48 NCQ (depth 31/32)
The drive supports 32 but libata reserves one queue entry for its own use, therefore the actual queue depth in use is 31.
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