Jerry McAllister wrote: > On Thu, May 24, 2007 at 06:07:58AM -0500, [EMAIL PROTECTED] wrote: > > >> On 24/05/07, kalin mintchev <[EMAIL PROTECTED]> 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 and >>>> different partitions.... >>>> >>>> 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'. >>> >>>> it makes sense to me that if i don't see a second drive in the fstab >>>> >>> there >>> >>>> isn;t any mounting which means that there is no raid going on... >>>> >>>> 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... >>>> >>>> thanks..... >>>> >>>> >> Lots of people here know plenty about RAID, >> but you don't provide very much information. >> >> If dmesg itself returns none of the startup info, >> you can look in /var/log/dmesg.[today|yesterday]. >> >> /usr/sbin/pciconf can tell you what controller(s) >> may be attached. >> >> A proper RAID will show up as a single device, >> just like any hard drive (but different). >> >> It does seem odd to me that a (supposed) RAID >> would show up as /dev/ad4. >> > > A hardware raid will look like any other drive to the system. > If it is SATA raid, it should be adN > It is it SAS raid, it should be daN. > > I have an SATA RAID controller (rocketraid 1640) and the drive shows up as daN and not adN When I tested the controller without the driver loaded the DRIVES showed up ad adN, I put drives in caps because this is what I think is happening here, the driver isn't loaded and/or no RAID devices were created, so the RAID controller's drives just show up as drives and the controller is just used as a non-RAID controller. I suspect this is why he sees a second disk.
Gabriel > Some systems allow you to address the drives as either individual > drives or as the raid - maybe until you have configured it or > something. Anyway, on a Dell 2950 I could see both designations > but figured out which was the raid and used it and all was fine. > > ////jerry > > >> Possibilities: >> Your RAID really is on /dev/ad4 and /dev/ad6 is >> something unexplained. >> Your RAID controller is unsupported in 5.x and >> not Doing The Right Thing but somehow still (kind >> of) working as a normal [S]ATA controller. >> Your RAID controller is unsupported in 5.x and >> your hosting company realised this and wired >> the shebang up as a normal [S]ATA controller >> because they couldn't get FreeBSD to install >> otherwise. >> There is a RAID controller and there are two disks >> connected to it, but the controller was not set up >> correctly. >> There is a RAID controller and there are two disks >> connected to some other controller which might lead >> to some interesting phone calls. >> Your remote hosting company put a RAID with two >> disks in some random machine and someone else >> is complaining on some other list about the inverse >> of your problem. >> >> -- >> -- >> _______________________________________________ >> freebsd-questions@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to "[EMAIL PROTECTED]" >> > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > > _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
