Date: Fri, 18 Apr 2008 20:14:00 +0200 From: "Josep Pujadas i Jubany" <josep@bellera.cat> To: freebsd-proliant@freebsd.org Subject: Re: gmirror problem with HP Proliant ML110 G5 Message-ID: <20080418175001.M1439@bellera.cat> In-Reply-To: <20080418092034.GA34069@eos.sc1.parodius.com> References: <20080417171439.M22551@bellera.cat> <20080417172729.M94092@bellera.cat> <83ABD599-A699-4CD8-AF1F-D42357C7D9B9@yahoo.it> <20080418092034.GA34069@eos.sc1.parodius.com>
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On Fri, 18 Apr 2008 02:20:34 -0700, Jeremy Chadwick wrote > On Fri, Apr 18, 2008 at 07:12:06AM +0200, Gianni wrote: > > Josep, the disks may be the same in capacity, but they aren't completely > identical. It's fairly obvious one is a Seagate and the other is > HP/Compaq drive. Yes, I know. It is difficult to have exactlly the same model when you buy a machine to HP in Spain. First disk comes with the machine and the second in a separate box. But I have many machines like this using gmirror and no problem up to now. > This is very likely **not** the cause of the DMA errors you're > seeing, but I did want to take a moment to state that mix-matching > drives with different semantics in a mirror is somewhat risky. No other solution. If one disk fails and I have to change it I'm quite sure I will not find the same model. Same geometry yes, but exactly the same model not. > > There are a few reports of this on the freebsd-stable mailing list in March > > and I'm also experiencing the same problem, so far none of the suggested > > resolutions has helped for me. > > http://lists.freebsd.org/pipermail/freebsd-stable/2008-March/thread.html > > > > I've got the issue on a custom built box with amd64 + 7.0 + gmirror and > > I've got a Proliant ML110 G5 running 6.3 I'd like to upgrade to 7.0 but too > > scared to do so until this issue appears to have been identified and fixed. > > Copying in freebsd-stable as it's not just a problem on Proliant. > > -Gianni > > I've documented the DMA problem quite thoroughly. The DMA errors are > not specific to gmirror: > > http://wiki.freebsd.org/JeremyChadwick/Commonly_reported_issues > > If the problem is easily repeatable, and you have serial console > available on the box, please contact Scott Long who has offered to help > track the source of these problems down. Many thanks! Interesting help. I didn't know about smartmontools. I installed it and I made a long test for my disk. It seems ok! I will try to change the cable, but it is a new cable, as the disk. I had other problems with this Proliant: * NIC card was not detected. I had to patch some source files and recompile the kernel. * reboot doesn't work. It is necessary to charge ipmi kernel module and use watchdog. Similar problem with shutdown (impossible to power off). * I had also some DMA errors with the CD when installing FreeBSD 7.0. I burned a new one and I worked. But now I'm wondering if it was a similar problem that I have now. Regards, Josep Pujadas
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