Date: Wed, 26 Oct 2005 09:41:34 -0400 (EDT) From: "Matthew N. Dodd" <mdodd@FreeBSD.ORG> To: Palle Girgensohn <girgen@FreeBSD.ORG> Cc: hardware@FreeBSD.ORG Subject: Re: ida problems, one disk broken = system very slow Message-ID: <20051026093814.U609@sasami.jurai.net> In-Reply-To: <8B7CFEAEC6605866DCAAF092@rambutan.pingpong.net> References: <8B7CFEAEC6605866DCAAF092@rambutan.pingpong.net>
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On Tue, 25 Oct 2005, Palle Girgensohn wrote: > A customer has a machine with four disks in RAID 10 using the ida(8) > controller on FreeBSD-4.11. ftp://ftp.jurai.net/users/winter/idacontrol.tar would solve a few of your problems on 5.x or better but getting it to work on 4.x requires patching and recompiling. > Now one disk is broken. I have some questions: > > 1. How can I detect that a disk in a raid cluster is broken? It seems > natural to me that the raid driver would log info about a broken disk, > but I have not seen this happen with any raid controller driver. Most array drivers have a userland utility that allows inspection of array status. The utility for ida(4) isn't in the base system yet. > 2. The system is extremely slow and hardly usable right now. The > customer are still waiting for a replacement disk. Is there any way to > get the system to just ignore the broken disk instead of trying to use > it and fail. I get thousands of "ida0: soft error" in messages log. If > the system would realize that it had problems with the disk, and ignore > them, perhaps it wouldn't become unsable, Well, you could rate-limit the error messages, or comment out the message entirely. > 3. Will the array rebuild automatically once they insert the new disk? Depends on the BIOS setting. -- Lord, wheresoever this rifle goest, guide my hands upon it. Let a shot never be fired in anger or error. Bless it to your righteous service. In your mercy, Thine is the kingdom Amen.
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