> Symptoms:
> ---------
> The message occurs only when doing backup on tape (the only heavy IO
> situation for that machine).
>
> Oct 27 02:00:21 iwr01 kernel: attempt to access beyond end of device
> Oct 27 02:00:21 iwr01 kernel: 08:11: rw=0, want=2078145526, limit=8924076
> ^^^^^
> The device numbers corresponds to /dev/sda11 but this partition did
> never exist, fdisk shows correct values.
Two things: 08:11 is /dev/sdb1, not sda11. Can you manage to reproduce
it doing the backup to /dev/null instead of the actual tape drive?
Something else to try might be moving the tape drive onto a different
controller (I'm assuming the tape drive is SCSI and on the same chain as
everything else).
-ben
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