Date: Tue, 14 Jan 2003 06:48:37 -0700 From: "Justin T. Gibbs" <gibbs@scsiguy.com> To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de> Cc: freebsd-scsi@freebsd.org Subject: Re: quirk candidate: SEAGATE ST52160N Message-ID: <808290000.1042552117@aslan.scsiguy.com> In-Reply-To: <20030114143505.A12331@uriah.heep.sax.de> References: <20030113220055.D50550@uriah.heep.sax.de> <147830000.1042501904@aslan.btc.adaptec.com> <20030114074853.A71485@uriah.heep.sax.de> <774150000.1042549034@aslan.scsiguy.com> <20030114143505.A12331@uriah.heep.sax.de>
next in thread | previous in thread | raw e-mail | index | archive | help
> As Justin T. Gibbs wrote: > >> >> It would be interesting to know the full content of the sense data. >> > >> > uncle# camcontrol cmd da1 -v -c '35 0 0 0 0 0 0 0 0 0' >> > camcontrol: error sending command >> > (pass1:ahc0:0:3:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0 >> > (pass1:ahc0:0:3:0): CAM Status: SCSI Status Error >> > (pass1:ahc0:0:3:0): SCSI Status: Check Condition >> > (pass1:ahc0:0:3:0): ILLEGAL REQUEST asc:20,0 >> > (pass1:ahc0:0:3:0): Invalid command operation code: Command byte 0 is >> > invalid >> >> So your disk doesn't always butcher byte zero of the sense data? > > Isn't byte 0 the `35' for the command? I. e., it is complaining > that it doesn't understand the SYNCHRONIZE CACHE cmd at all. Byte 0 of the sense data. In your first emails, the kernel was complaining about funny sense error codes which is why it never even looked at the ASC/ASCQ. The strange thing is that the bogus error code varied. I wonder if we are somehow corrupting the sense data. > SYNCHRONIZE CACHE is marked optional in the standard, > i thought we'd automatically detect the non-support of this > command by a target, and silently ignore it? If your device is returning proper sense data for this ILLEGAL REQUEST, then it should be silently filtered by scsi_da.c. The quirks in there *shouldn't be needed*, but for some reason the filter doesn't always work. It would be nice to know why it doesn't work. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?808290000.1042552117>