JBOD array and Linux

[Retro2001]

Hi. I'm quite new to linux and I've got a quick question. I have a two disk, JBOD array on a HPT320 IDE controller. I've tried several times to mount it, but each time I've had only partial access to the drive array, like I'm individualy accessing the two disks. Any suggestions?

Thanks,
Will

 

[Nothinman]

'JBOD array' is an oxymoron, JBOD means Just a Bunch of Disks which means there is no array.

 

[Retro2001]

There is an "array" of sorts because the partition is mapped over the two drives. Therefore, if you look at the partiotion information, it shows the second disk as empty and the first disk as having a partition consuming 200% of its available space.

Peace,
Will

 

[Nothinman]

Then it's RAID 0, not JBOD.

But really those things are just regular IDE controllers with a little BIOS magic for booting, all the RAID is done in the driver. There's limited support for them in recent Linux kernels but I havn't tried it because I hate HighPoint with a passion, and I'm all SCSI.

 

[n0cmonkey]

<< and I'm all SCSI. >>



Sounds like a bad pickup line

 

[Nothinman]

Any pickup lines that come from my mouth are bad :/

 

[n0cmonkey]

<< Any pickup lines that come from my mouth are bad :/ >>





Maybe you need new lines? I know most of the ones not to use, but very few that work. And this wouldnt be the place Id go to find lines that work

 

[cleverhandle]

Actually, Nothinman, the Promise and Highpoint chips do have a "JBOD" mode apart from RAID 0 - like a spanned volume under W2K. I have no idea if Linux supports it though. The partition table reading sounds right, but I'm not sure I would trust it, given how the RAID cards play some funny tricks to get things to work. After you mount the single partition, try a "df". If that reports the correct (double-size) space on the single partition, I'd guess it's working okay, if not, then I don't know...

 

[Nothinman]

Actually, Nothinman, the Promise and Highpoint chips do have a "JBOD" mode apart from RAID 0 - like a spanned volume under W2K.

Well it's mislabled then (which figures, considering they mislable an IDE controller as a RAID controller), JBOD is each disk is a seperate volume, it should be spanned or linear or something.