Date: Tue, 21 Feb 2006 10:11:23 -0800 From: Bakul Shah <bakul@BitBlocks.com> To: anton@nikiforov.ru Cc: freebsd-hardware@freebsd.org Subject: Re: LSI Trouble Message-ID: <200602211811.k1LIBNAF067728@gate.bitblocks.com> In-Reply-To: Your message of "Tue, 21 Feb 2006 00:04:58 %2B0300." <43FA2EFA.9020603@nikiforov.ru>
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Anton Nikiforov <anton@nikiforov.ru> writes: > Here we go, a report of getting my disks back alive :) Thanks! > 5. RAID 5 disks contain some strange (strange for me) info - 2 140GB > disks contain partition of 280GB and the third disk of this RAID5 set - > only 14MB!!! FreeBSD partition and some other data. As far as i know > RAID5 algorythm this is impossible - i should have 3 disks with some > data, maybe even with partitions, viewable with FreeBSD fdisk. fdisk depends on sector 0 of a disk. In a raid5 setup only the first disk will have raid5 sector 0, which will show the size of raid5 'disk' which is 280GB. So I don't think you can infer anything from fdisk run on individual disks of a RAID5 set. [Unless LSI logic is doing something weird + I am just guessing and may have completely misunderstood you] > 2. Looks like this controller claims that it is suport RAID5 while it is > only RAID4. Likely it supports RAID5 and you are misunderstanding something. > ToDo: > Analyze RAID5 sets from LSI and, maybe (because i'm not a great C coder) > make some tool to get data from broken RAID sets. I wouldn't bother.
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