Date: Thu, 17 Nov 2011 11:39:27 -0500 From: Douglas Gilbert <dgilbert@interlog.com> To: =?UTF-8?B?RGFnLUVybGluZyBTbcO4cmdyYXY=?= <des@des.no> Cc: scsi@freebsd.org Subject: Re: smartd blows away mfi config Message-ID: <4EC538BF.8060804@interlog.com> In-Reply-To: <86d3cqpxh0.fsf@ds4.des.no> References: <86d3cqpxh0.fsf@ds4.des.no>
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On 11-11-17 10:42 AM, Dag-Erling Smørgrav wrote: > I have a Dell PowerEdge 1950 II with a PERC/5i controller and two SATA > disks. I had no trouble at all setting up logical volumes with mfiutil > and installing FreeBSD 8.2, but when smartd starts (with smartd.conf > consisting only of "DEVICESCAN") it seems to blow away the config so the > virtual disks disappear from underneath the running system and I have to > powercycle the machine. When the machine reboots, the controller does > not find any logical disks. The configuration utility finds a "foreign > configuration" which I can import, and there doesn't seem to be any data > missing. > > This does not seem to happen if I specify the passX devices explicitly > in smartd.conf - only if I use DEVICESCAN. This indicates that the > problem arises when smartd scans the SES device (i.e. the backplane). Not sure how SES devices appear as device nodes (i.e. /dev entries) in FreeBSD. If they can be mistaken for disks then smartd has a problem which I will look into. Doug Gilbert > The problem is that the unit numbers can vary over time, e.g. if I add > an optical drive or boot the system with a USB mass storage device > attached, so listing them explicitly is not a good long-term solution. > > Any suggestions? The ideal solution would be a patch for either the > kernel or smartd to prevent it from blowing away the mfi config, but > short of that, is there a way to have smartd ignore the backplane when > scanning for supported devices? A drivedb entry, perhaps? As a last > resort, I guess I could regnerate smartd.conf at boot time by parsing > dmesg and / or the cam device list. > > Note that I am running 8.2-RELEASE and the version of smartmontools that > ships with it, or rather, what pkg_add -r gives me (which I guess is the > same thing). > > DES
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