>> -----Original Message-----
>> From: [EMAIL PROTECTED]
>> [mailto:[EMAIL PROTECTED] Behalf Of kalin mintchev
>> Sent: Thursday, May 24, 2007 4:11 PM
>> To: firstname.lastname@example.org
>> Cc: [EMAIL PROTECTED]
>> Subject: Re: raid or not raid
>> > On Thu, May 24, 2007 at 06:30:06AM -0400, kalin mintchev wrote:
>> >> so nobody on this list knows anything about raid?
>> >> wrong list?
>> >> > hi all..
>> >> >
>> >> > i have a box in a remote hosting facility that claims that
>> the machine
>> >> has
>> >> > two discs raided in it but df and fstab show only one disc with a
>> >> bunch of
>> >> > slices.
>> >> > under devices there is another name - ad6 - but it's not mounted
>> >> anywhere.
>> >> > the one i see both in df and the fstab is ad4 with one big slice
>> >> > different partitions....
>> > My (VIA Tech V-RAID) raid disk shows up as ar0, although the ad4 and
>> > device nodes exist as well.
>> > Do you have the ataraid device in the kernel?
>> yes. but isn;t that in by default in 5.4 GENERIC?!
>> >> > they insist there are 2 raided discs in tha machine. the os
>> is 5.4 and
>> >> i
>> >> > think at that point the raid drivers were still considered
>> >> > 'experimental'.
>> > Then ask them how it's done.
>> >> > it makes sense to me that if i don't see a second drive in the
>> >> there
>> >> > isn;t any mounting which means that there is no raid going on...
>> > If you're seeing an ad device, it's not RAID-ed, AFAIK.
>> >> > is there any other way i can make sure if raid is actually on?
>> >> > would there will be any logs somewhere?
>> >> > the machine has been up for about 2 years and the dmesg is long
>> >> gone...
>> > It should be in /var/run/dmesg.boot.
>> thanks. i guess that solves the ad6 mistery:
>> atapci0: <Intel ICH5 UDMA100 controller> port
>> 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0
>> ata0: channel #0 on atapci0
>> ata1: channel #1 on atapci0
>> atapci1: <Intel ICH5 SATA150 controller> port
>> 18 at device 31.2 on pci0
>> ata2: channel #0 on atapci1
>> ata3: channel #1 on atapci1
>> ad4: 152587MB <WDC WD1600JS-75MHB0/03.01C03> [310019/16/63] at
>> ad6: 152587MB <WDC WD1600JS-75MHB0/03.01C03> [310019/16/63] at
>> Mounting root from ufs:/dev/ad4s1a
>> unless "at device 31.2 on pci0" points to some RAID evidence - which i
>> think it's false - than i read this as the ad6 disk sits there unused.
>> am i right?!
>> according to pciconf the atapci0 and atapci1 are differnt conrollers -
>> EIDE and SATA so they can both be on pci0 as 31.1 and 31.2?! still no
> I've come late to this thread but it's been interesting watching the
> Yes, they F'd up the installation. Badly. But you need to back up every
> scrap of data before trying to fix it. And use FBSD 6.2 on the next one.
> There's been lots of driver fixes in the ata driver that you want.
> ata raid should show all your data on AR not AD!! Here's an example
> from my mailserver:
> mail# cat /etc/fstab
> # Device Mountpoint FStype Options Dump
> /dev/ar0s1b none swap sw 0 0
> /dev/ar0s1a / ufs rw 1 1
> /dev/ar0s1e /usr ufs rw 2 2
> /dev/ar0s1d /var ufs rw 2 2
> /dev/acd0 /cdrom cd9660 ro,noauto 0 0
> Also, note the following. VERY important!
> When you go to setup a RAID mirror on a system, using a UDMA or SATA
> (ie: NOT using a RAID5 card or SCSI card or some such) here is what you
> Start by going into the system RAID BIOS on boot, setup your RAID, then
> boot the install disk. Disks ad4 and ad6 will always show. If disk ar0
> also shows, you can select ar0 and install to that.
> IF DISK ar0 DOES NOT SHOW, then your BIOS "metadata" isn't compatible.
> Reboot system. GO into BIOS. DESELECT and DISABLE the RAID.
> Boot system with install CD. At the screen that displays ad4 and ad6,
> ad4. Select Minimal install. Don't bother answering any post install
> Finish install. Reboot and login to root. At command line, issue
> atacontrol create RAID1 ad4 ad6
> Immediately reboot from the install CD. Now, at the disk selection screen
> you will see ar0. Select this. Delete all existing partitions and
> them, install the full system and your in business.
nice... thank you. i love condensed instructions. saves so much time...
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