Date: Thu, 24 May 2007 06:07:58 -0500 From: "illoai@gmail.com" <illoai@gmail.com> To: kalin@el.net Cc: freebsd-questions@freebsd.org Subject: Re: raid or not raid Message-ID: <d7195cff0705240407w50617086i6ebbdfc4b9eaeac1@mail.gmail.com> In-Reply-To: <61733.74.64.6.149.1180002606.squirrel@mail.el.net> References: <54316.74.2.36.140.1179892303.squirrel@mail.el.net> <61733.74.64.6.149.1180002606.squirrel@mail.el.net>
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On 24/05/07, kalin mintchev <kalin@el.net> 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. 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. -- --
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