Date: Tue, 18 Aug 1998 17:31:26 -0400 (EDT) From: Simon Shapiro <shimon@simon-shapiro.org> To: Charles Owens <owensc@enc.edu> Cc: freebsd-scsi@FreeBSD.ORG Subject: RE: DPT management binaries for FreeBSD? Message-ID: <XFMail.980818173126.shimon@simon-shapiro.org> In-Reply-To: <Pine.BSF.3.96.980818154628.3182I-100000@itsdsv2.enc.edu>
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On 18-Aug-98 Charles Owens wrote: > On Sat, 15 Aug 1998, Simon Shapiro wrote: > >> >> On 13-Aug-98 Charles Owens wrote: >> > Simon, >> > >> > I looked under ftp://ftp.simon-shapiro.org/crash/tools and noted >> > a number of FreeBSD binaries with names like "dtp_dm". Could this per >> > chance be the native mgmt software that Tom is talking about below? >> > >> > If so, do I need a /dev/dpt? How can a make one (/dev/MAKEDEV doesn't >> > know anything about it, of course)? >> >> These will not work in 2.2, only in 3.0-current; Too much retrofitting >> for >> what is considered a stable version of the O/S. > > Okay then, two questions: > > 1. Without these tools is there any way for me, with a 2.2-stable system > to: > * determine array status (e.g. "drive 3 has failed") Smart Alec Reply: Listen to the beeps. They indicate (really) controller, bus, target. Serious Answer: You are right, and I am working on it. I will probably release it on 3.0, as 2.x is a stable release for which new functionality is not destined. > * issue basic commands like "rebuild array" or "make drive X > a hot spare." See Serious Answer above. > I'm mostly interested in being able to fully recover from a single drive > failure without having to reboot and run the DOS Storage Manager. > > ... and no, I don't have DPT drives and enclosures (grrr...) which I > understand would take care of this for me. Took the words out of my mouth :-). With DPT enclosures, you will find that the number of failures is reduced dramatically. Call me at home for details on how to acomplish that a bit easier. > 2. Would you consider 3.0-current generally stable enough for me to > use for a large storage system? (about 52 GB usable space, 4 RAID-5 > arrays ccd'd together, as you suggested) It will be doing little > other > than serving up this disk space to a handfull of other FreeBSD boxes > via NFSv2. I do not know the state of the NFS these days. My experience with the DPT driver and the kernel, is that I can load 3.0 much heavier than a 2.2 kernel. This last sentense is in conflict with the official FreeBSD policy of strongly discuraging production work on 3.0. My advise here is to always test a new 3.0 kernel, heavily, before putting it on a production machine. Heck, this is good advise for ANY software version :-) > If I did use 3.0-current, will these tools from your ftp site allow me > to do what I describe above? Not yet, but as soon as they are functioning properly you will. Simon To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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