Date: Wed, 9 Apr 2003 00:27:24 -0700 From: "Sean Hamilton" <sh@planetquake.com> To: "Soeren Schmidt" <sos@spider.deepcore.dk>, <hackers@freebsd.org> Subject: Re: Undeletable ATA RAID Message-ID: <002b01c2fe69$776a6dc0$0300000a@slugabed.org> References: <200304090659.h396x6YB034830@spider.deepcore.dk>
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Soeren Schmidt wrote: | It seems Sean Hamilton wrote: || Soeren Schmidt wrote: ||| It seems Sean Hamilton wrote: |||| [ Undeletable ATA RAID ] ||| ||| What kind of controller do you have since that is vital for how ||| ATA RAID's are setup ? || || It's using software RAID on a Promise ATA100 controller. | | Hmm, with both disks connected, atacontrol delete whatever arrays it | see there, then make a new array with atacontrol covering both disks, | then delete that. That should make certain all array information si | overwritten... I can't, because the second disk is gone. (I probably should have deleted the array before removing it...) I could add another disk, or whatever, but this problem should probably be fixed. Anyhow, sequence of events: - Create SPAN array ar0 on ad4,ad6. (the only disks in the system) - Install freebsd onto array. - Get new disks, install as ad0 and ad1. - Create stripe ar1 on ad0,ad1. - Forgetting having done so, remove ad1. - Boot, now ar0 and ar1 are reversed. ar0 is broken, ar1 works fine (but fstab is confused, of course.) It can boot fine if I unplug ad0, so I'm guessing it looks at the first disk for raid info? Hm, perhaps a better naming system is in order. I never liked how it stores array info in the disk like this... seems trouble-prone... like this. ...Ah, seems booting into single-user, deleting ar0, creating at0 as a single-disk span array, and deleting that, has things working. Where does it store the array info? Seems strange that zeroing the disk kept it, does it just choose a disk and use that for all info? Or is it at the end of the disk? I ^Cd the dd after a few seconds. sh
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