Re: Softraid 1 Help
On Fri, 22 Feb 2013 12:00:06 -0600
Brandon Tanner wrote:
> Thanks for any feedback.
Let's give you some more detailed advice (yes, you still need to read the man
pages ;) )
1) MAKEDEV is only needed if the device you want doesn't yet exist in /dev.
sd1, sd2 and sd3 are probably already there.
2) "man fdisk". Yes, you will need to do it on sd1 and sd2. It initializes the
partition table.
3) "man disklabel". Create a partition on sd1 and sd2 called "a". This gives
you sd1a and sd2a, your data partitions that you will use for the RAID. Read
the man page to figure out what sd1c/sd2c is.
Read http://openbsd.org/faq/faq14.html to understand what fdisk and disklabel
does.
4) "man bioctl". Now create a RAID1 device, using sd1a and sd2a as the "special
devices". This will give you sd3 (or the next free number), your RAID disk.
5) Now you need to initialize this new sd3 disk like any other disk. Run fdisk
on it, then disklabel, and you will end up with sd3a, your RAID data disk.
6) Final step; format this sd3a ("man newfs") and finally mount it.
This should give you an idea of what steps are required. But as previously
suggested, read the FAQ and the man pages, and understand them ;) - unless you
don't care about your data.
kind regards,
Robert
Re: Softraid 1 Help
On 02/22/2013 01:00 PM, Brandon Tanner wrote: Hello, This is my first time posting to this list. I am wanting to setup a softraid 1 array, with two 3TB drives. Every guide or howto I can find though is about installing onto such an array. My case however, the boot drive is on its own, a 250GB'er. I simply want to create the array with softraid, mount it at /storage, and use it. Does anyone know of any guides that cover this kind of scenario? man bioctl. I also have a few questions about what I read so far. 1. a few guides talk about using the MAKEDEV shell script. Do I still need to use that for my scenario? oy. You have to understand what you are doing...not just type things randomly that you find on the 'net... (I sometimes get tempted to post a page (anonymously, of course) of "tips" for people to do... all of which being slightly obfuscated versions of major data loss instructions, such as "rm -rf /" or "format c:", to use as a way to encourage people to understand what they are typing. Other times, looking at some of the crap on the 'net, I see people have beat me to it, unintentionally) 2. Also, since my target array will not be a bootable array, do I still need to fdisk -yi the devices? I read in the FAQ that fdisk won't report the sizes correctly, but that I shouldn't worry though, since disklabel with the b option will cover it. why would you not want to do the fdisk step? Can you live without it?...well, if done perfectly, probably. I'd suggest just following the man page... If you got to ask, just do it right. If you understand, you will probably opt to do it right, too. 3. My two identical 3TB drives are sd1 and sd2, and bioctl reported that sd3 is created. I ran newfs -O 2 on it, and that seemed to work. I can't figure out how to mount it though. mount /dev/rsd3c /storage says something about block device required. um. you ran newfs on what? yes, you created sd3...but you still have to fdisk it, disklabel it, and THEN you can format the partitions. And, you don't use the 'c' partition as a file system. ever. Just don't. (and for those in the peanut gallery who say, "but I got away with it!", no, it just didn't bite you yet). See FAQ14... you can skip the "-O2", unless you are making an under-sized partition you may later want to growfs to FFS2 size. Nick.
Re: Softraid 1 Help
You haven't added any partitions to the raid set you created. And then you're trying to mount that using the raw mode device. Either you're reading a bad tutorial or didn't follow all the steps. Add a partition and try mounting that using the block device, sd3, not rsd3. You owe it to yourself to read at least the sectiom of the faq covering disks. -noah On 2/22/13, Brandon Tanner wrote: > Hello, > > This is my first time posting to this list. I am wanting to setup a > softraid 1 array, with two 3TB drives. Every guide or howto I can find > though is about installing onto such an array. My case however, the boot > drive is on its own, a 250GB'er. I simply want to create the array with > softraid, mount it at /storage, and use it. Does anyone know of any guides > that cover this kind of scenario? > > I also have a few questions about what I read so far. > > 1. a few guides talk about using the MAKEDEV shell script. Do I still need > to use that for my scenario? > > 2. Also, since my target array will not be a bootable array, do I still > need to fdisk -yi the devices? I read in the FAQ that fdisk won't report > the sizes correctly, but that I shouldn't worry though, since disklabel > with the b option will cover it. > > 3. My two identical 3TB drives are sd1 and sd2, and bioctl reported that > sd3 is created. I ran newfs -O 2 on it, and that seemed to work. I can't > figure out how to mount it though. mount /dev/rsd3c /storage says something > about block device required. > > That's about as far as I got. > > Thanks for any feedback. > > -Pyrite
