Date: Thu, 21 Apr 2011 20:18:20 +0200 From: Lorenzo Perone <lopez.on.the.lists@yellowspace.net> To: Holger Kipp <Holger.Kipp@alogis.com> Cc: "stable@freebsd.org" <stable@freebsd.org> Subject: Re: FreeBSD and DELL Perc H200 Message-ID: <4DB074EC.4020701@yellowspace.net> In-Reply-To: <814C9E9472FDCC40AAC3FC95A2D67E3B0BD70D8D@msx3.exchange.alogis.com> References: <52A7DCCC-97EB-4C87-9AE6-95C26D0DD241@alogis.com>, <4EC4CD41-50FF-4E6E-96E0-5A2393A51CFE@nitro.dk> <814C9E9472FDCC40AAC3FC95A2D67E3B0BD70D8D@msx3.exchange.alogis.com>
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> Would have loved to use a stable branch (ie 8.2) instead of development (9.0-CURRENT), > though. Especially for the new DELL servers with Perc H200 providing a snapshot with > the changes would be greatly appreciated! > Hi Holger, Go for 8-STABLE. Works fine for me. No need for CURRENT for mps(4). Following some heavy load tests (such as concurrent, subsequent buildworlds while bonnie++ing around), I can also state that it is very stable. Have it on a DELL PowerEdge R410 with the PERC H200A adapter and SAS disks, and it works like a charm. I used gmirror on that, and the performance is awesome, provided that You tune the sysctl.conf and add: vfs.read_max=128 which makes sustained reads much faster (among the -b load default strategy when labeling the mirror). > I don't think there are any other snapshot services still running... so (assuming > mps(4) actually works with H200) you need to make a build of stable/8 yourself - > the simplest approach is probably to PXE boot the servers and install by hand... > but that's of course not a trivial thing if you never tried it before. > > Well, setting up a PXE boot server just for installing one server... :-/ > > It's easy if you have any other FreeBSD machine of the same architecture around with 8-STABLE - In fact I also did such a thing once using a VirtualBox running on a mac some time ago. If you need a quick setup guide tell me I'll send You a few commands. You can also take one disk out, attach it to a running FreeBSD machine, gpart it, cd /usr/src && make installworld DESTDIR=/mountpoint && make installkernel DESTDIR=/mountpoint && make distribution DESTDIR=/mountpoint Edit the few usual suspects such as at least /mountpoint/etc/fstab and boot the system with the disk.. Regards, Lorenzo
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