Date: Wed, 19 Nov 2008 14:37:05 -0500 From: John Almberg <jalmberg@identry.com> To: freebsd-questions@freebsd.org Subject: Re: snmpd strangeness Message-ID: <E75530E4-DD9E-4002-B7D0-BBF98EF02208@identry.com> In-Reply-To: <20081119185829.GA4786@icarus.home.lan> References: <BFDB04F6-6032-4CBE-859A-CB2BEE3A4C4E@identry.com> <20081119164919.GA2347@icarus.home.lan> <EFB2D630-CDB6-4E5C-98BF-5A37A3502D71@identry.com> <20081119172649.GA3139@icarus.home.lan> <A0526D15-3EF3-40E3-9362-F80DE5FF364C@identry.com> <20081119185829.GA4786@icarus.home.lan>
next in thread | previous in thread | raw e-mail | index | archive | help
>> This machine has an Intel motherboard and a hardware raid controller. >> From what I can tell, there is some Intel software installed on the >> machine that makes hardware faults visible to snmp. > > That would require Net-SNMP to be linked to that software (or library) > directly. Two things can't just "magically talk" to one another. :-) As I said, I really have no idea. Now that I'm reading more deeply in the notes... the monitoring was supposed to be with IPMI. No idea what that is, either, but I thought I'd toss it into the mix. > > AFAIK, Intel does not provide such software on FreeBSD, but I could be > complete wrong here. They primarily focus on Linux, like most > companies > do. > >> That last sentence makes it sound like I know more than I do about >> this >> situation. I'm just reading from notes. :-) >> >> And I have an Intel disk that came with the motherboard that hints at >> the same type of thing. I've just scanned the docs on the disk... >> looks >> extraordinarily complicated. > > I don't know what controller it is, but Net-SNMP doesn't have any sort > of out-of-the-box support for any kind of RAID card. See above for > what's needed. > > I just hope the card is an actual RAID card and not BIOS-level RAID > like > Intel MatrixRAID. If it is MatrixRAID, I highly recommend you back > the > entire machine up and reinstall without MatrixRAID, otherwise when you > lose a disk or need to rebuild your array, you'll find your array > broken/gone, be completely unable to rebuild it, or kernel panics. > Note > that all of this stuff works just fine on Linux; the issues listed are > with FreeBSD. > > Generally speaking, we (the open-source world) have gotten to the > point > with OS-based software RAID (e.g. Linux LVM, FreeBSD ccd/gvinum/ZFS, > OpenSolaris ZFS) where it offers significant advantages over hardware > RAID. There are good reasons to use hardware RAID, but in those > scenarios admins should be looking at buying an actual filer, e.g. > Network Appliance. Otherwise, for "simple" systems (even stuff like > 2U or 3U boxes with many disks, e.g. a "low-cost filer"), stick with > some form of OS-based software RAID if possible. > That's good to know. I was told just the opposite by the guy selling the $650 RAID cards. Who'd have thunk? The card in the box is a Intel 18E PCI-Express x8 SAS/SATA2 Hardware ROMB RAID with 128MB Memory Module and 72 Hour Battery Backup Cache $625 as shown on the packing list, so I hope it's a good one. -- John
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E75530E4-DD9E-4002-B7D0-BBF98EF02208>