Date: Fri, 28 Mar 2014 21:46:38 +0100 From: Matthias Andree <matthias.andree@gmx.de> To: freebsd-scsi@freebsd.org Subject: Re: SYM8951U sees ch0 but not sa0 Message-ID: <5335DFAE.1050109@gmx.de> In-Reply-To: <831365dbd2a006fd36b7a1465d33fe00@mailjail.langille.org> References: <831365dbd2a006fd36b7a1465d33fe00@mailjail.langille.org>
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Am 28.03.2014 19:58, schrieb Dan Langille: > I have installed a Symbios Ultra2 32-bit PCI SCSI Adapter SYM8951U in my > FreeBSD 9.2 system. Attached to it is a Compaq StorageWorks MSL5026 > tape library. I have never used this library before, but it was given > to me by someone who did use it. It worked at one time. > > The system sees the changer, but not the drive. I've tried swapping the > SCSI cable and the LVD/SE terminator on the tape library ports. Same > result. After each cable retry, I run 'camcontrol rescan all'. > > [dan@knew:/dev] $ ls *sa* *ch* > ls: *sa*: No such file or directory > ch0 > [dan@knew:/dev] $ > > Any ideas? Suggestions? Card settings? > > I conclude the cable is OK, given that I can get a list of the tapes in > the library. > > The front panel of the library sees the tape drive. It has a SCSI ID > assigned. I haven't much experience with multi-LUN devices, nor tape libraries, but OTOH I haven't had issues with Symbios (NCR, LSI) controllers + bare tape drives so far [*] - Is that drive's ID a separate target ID, or is it a LUN? + If it's a LUN, is it <= 7? + If it's a LUN, do the SYMBIOS settings permit scanning for LUNs at all? (Although it's not entirely clear to me from sym(4) if rescan would scan LUNs.) - Does camcontrol reportluns help any? - Can you have the host adaptor's BIOS scan the BUS and report devices and LUNs and see if that differs from FreeBSD's view of the world? __________ [*] One exception though: Tekram DC-390U were using the Ultra+Wide 53C875 chip but an 8-bit connector and used to cause hitches when connecting UW devies, at least with older drivers. I forgot if I ever checked whether this was ever fixed...
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