Date: Sun, 10 Mar 1996 19:53:01 +0100 From: Daniel Rock <rock@wurzelausix.cs.uni-sb.de> To: current@freebsd.org Subject: Re: NCR disk controller, hp disk Message-ID: <3143250D.3A88@wurzelausix.cs.uni-sb.de> References: <199603101457.AA04448@Sisyphos>
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Stefan Esser wrote: > > On Mar 8, 16:39, Jim Lowe wrote: > } I have an NCR 825 PCI disk controller. I just attached a second disk > } to the controller and am trying to access it. The second disk works > } just fine under dos, but not freebsd-current. I am getting the following > } errors: > } > } sd1(ncr0:1:0): ABORTED COMMAND asc:4e,0 Overlapped commands attempted > } , retries:4 > } sd1(ncr0:1:0): ABORTED COMMAND asc:4e,0 Overlapped commands attempted > } , retries:3 > } sd1(ncr0:1:0): ABORTED COMMAND asc:4e,0 Overlapped commands attempted > } , retries:2 > } sd1(ncr0:1:0): ABORTED COMMAND asc:4e,0 Overlapped commands attempted > } , retries:1 > } sd1(ncr0:1:0): ABORTED COMMAND asc:4e,0 Overlapped commands attempted > } , FAILURE > } sd1: error reading primary partition table reading fsbn 0 (sd1 bn 0; cn 0 tn 0 s > } n 0) > > This particular HP drive (the C3724S) is known > to cause problems with tagged commands. Please > rebuild your kernel with > > options "SCSI_NCR_DFLT_TAGS=0" > > and everything will be fine again. > > You can reenable tags for the first drive using > > # ncrcontrol -s tags=0 -s tags=4 > > I'd be really interested to understand what is > going wrong here, since this is the only drive > known to cause that kind of problem. The driver > sends the command and the drive its reply just > fine, but this reply indicates that the drive > doesn't accept a tagged command, though it did > inidcate support for this feature before. Not only FreeBSD has problems with HP drives. I had to disable tagged-command-queueing on a SparcServer 600, because the HP drive (a C3325A) showed up exactly the same problems (the SCSI HBA is a FAS236). Daniel
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