On Mon, Jun 13, 2005 at 05:59:53PM -0500, James Bottomley wrote: > On Mon, 2005-06-13 at 23:42 +0200, Frank van Maarseveen wrote: > > kernel: Vendor: WANGTEK Model: 5525ES SCSI Rev: 73F > > kernel: Type: Sequential-Access ANSI SCSI > > revision: 02 > > kernel: target0:0:4: Beginning Domain Validation > > kernel: target0:0:4: Domain Validation skipping write tests > > kernel: scsi0:0:4:0: Attempting to queue an ABORT message > > The aic7xxx error handling is still very unreconstructed and DV takes > the driver through this if there's a mismatch. My best guess is that > like Gr\'egoir's CD-ROM, your wangtek is claiming to support a speed it > cannot. We find this out in DV, but not until we've gone through all > the error paths. The quick fix is simply to set the bios to whatever > the tape eventually configures with (although you'll need the current > patch set to make that work properly). Well, I can't seem to find the right collection of patches applying cleanly on 2.6.12-rc6 and the Adaptec BIOS says "ASYNC". It cannot go below 10MB/s and the tape unit can't go above 3.3 according to /proc/scsi/aic7xxx/0 I think: Target 4 Negotiation Settings User: 6.600MB/s transfers (16bit) Goal: 3.300MB/s transfers Curr: 3.300MB/s transfers Channel A Target 4 Lun 0 Settings Commands Queued 61 Commands Active 0 Command Openings 1 Max Tagged Openings 0 Device Queue Frozen Count 0 So, I'm kind of stuck with a very slow driver initialization. I think it takes much longer than the 30 seconds visible in the logfile, at least that's the impression I have (I'll use a stopwatch next time). -- Frank - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html