Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!gem.mps.ohio-state.edu!usc!bloom-beacon!eru!luth!sunic!mcsun!cernvax!achille From: achille@cernvax.UUCP (achille petrilli) Newsgroups: comp.sys.apollo Subject: DN10000 salvol + disk problems Message-ID: <1108@cernvax.UUCP> Date: 3 Oct 89 17:01:40 GMT References: <8909291500.AA06515@umix.cc.umich.edu> <519.25275fa3@mdcbbs.com> Reply-To: achille@cernvax.UUCP (achille petrilli) Organization: CERN European Laboratory for Particle Physics, CH-1211 Geneva, Switzerland Lines: 24 Hi, we are having a few problems (well, more than a few :-) with some third party disks we've installed on our DN10000s. The disks are just Maxtor's 700MB, the same shipped by Apollo, ESDI i/f. Here are the problems: 1) on one system we get constantly errors on head 0x0E, sector 0x0C, any cylinder. We swapped out the disk and introduced a new one, and it did exactly the same. 2) after introducing a bad spot, it happens quite often that salvol crashes during the 2nd pass with the following message: Internal Error: n_free (12F88) is < 0 in mark_blk in use, looks bad! (zone = 36 zone.n_free = FFFFFFFF) Does anybody know if problem 1) could be due to cables/controllers problems ? I don't know enough of ESDI to understand what's going on. Problem 2 seems pretty bad, if salvol gives up, who's going to fix your disk ? Any idea about it ? There is another thing that really makes me wonder: Maxtor disks shipped by Apollo are some 659MB, 3rd party Maxtor disks come out after an invol to be 683MB. What's going on here ? Thanks a lot, Achille Petrilli Cray & PWS operations