Roland Boden <[EMAIL PROTECTED]> wrote:
> I checked again and found that the non-disconnect-capable tape drive on one
>scsi-host does not
> interfere with the devices on the other host. Only when hd and tape is on the same
>host I get a
That's normal. If disconnection is disabled on a host adapter, it means
all other devices on the _same bus_ (ie on the same host adapter if
it has one channel) will be locked until the operation finishes.
e.g. a mt retension operation on a tape drive with a non-disconnect capable
tape drive OR a misconfigured host adapter (with disconnects disabled)
will make the other devices on the bus wait as long as needed (e.g. 10
minutes or more for a retension on slow devices). This will cause bus
resets, retries, and otherwise unreliable operation.
To solve the problem, either enable host adapter or driver disconnection,
buy a tape drive which is capable of disconnecting, or put the tape drive
alone on an old laying around controller.
-
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to [EMAIL PROTECTED]
