* megaraid driver problem with st driver for LTO2 tape drive
@ 2008-07-17 8:23 Nicolas TUFFIER
0 siblings, 0 replies; only message in thread
From: Nicolas TUFFIER @ 2008-07-17 8:23 UTC (permalink / raw)
To: linux-scsi
Hello,
Hardware configuration :
I have a PERC 4e/DC controller (PCI Express - fw:5A2D) plugged on an Asus
P5K (Core 2 E6400, 2GB dual channel) and an IBM LTO2 HH Tape drive
(fw:0330). I've upgraded firmwares from 520D for the PERC HBA and from
0290 for the tape drive.
Software configuration :
My system is a Debian etch (4.0) and have compiled a 2.6.25.9 kernel from
official source (kernel.org).
Problem description :
It seems that the st driver cannot handle variable block size and is
limited to 64k max fixed block size when tape is connected to the PERC
HBA.
The st driver print Block limits : 256 - 524288 when loaded and dd on the
tape with bs > 64k print device busy error.
In some situations (full system boot) loading st driver make system hang
(kernel panic), in single mode there's no problem with module loading.
However, there is no problem when tape drive is connected on a Tekram DC
390 U3W (sym53c8xx driver).
I can eventually do some tests and/or provide more info, let me know what
you need.
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