> If the partition types are set to "fd" and you selected the "autorun"
> config option in block devices (it should be turned on on a rawhide-type
> kernel), raidstart shouldn't be necessary. (the kernel will have
> already started the md arrays itself, and the later initscripts raidstart
> call won't be necessary). Could you paste any "autorun" section of md
> initialization during boot?
>
> does the same problem appear even if you build-in raid5? (first-pass
> debugging of building-in all raid-related scsi and md modules just to
> get initrd and module ordering issues out of the way might help)
>
> after you boot, does /proc/mdstat show the array? active?
> if you boot into single-user mode, is the array already active?
> what's the raidtab contents?
>
> Note that as coded, the initscripts should only be attempting to
> raidstart inactive arrays, but I never checked to make sure that
> the code actually worked as intended.
>
> Given that, I don't really think any of the above really helps, but
> it's something to throw out there :)
I think I figured it out.
the drives came off of an older sun. They still had the sun disklabels on
them. I never remade the new disk labels before repartitioning. I think
when I rebooted the disklabels got in the way of the disks being
recognized correctly and it ate the drive.
I also found out later than one of the drives I was using had somesort of
fairly heinous fault. It would detect but would only occasionally be found
by linux. I took it out of the array I think I'm going to rma it.
thanks for the help.
As an additional question. What sort of numbers should I be seeing
(performance wise) on a u2w 4 disk array in raid5.
I'm getting about 15MB/s write and 25MB/s read but I wouldn't mind getting
those numbers cranked up some.
I'm using 32K chunksize with the stride setting correctly set (as per
jakob's howto).
I'm testing with 500MB/1000MB/1500MB/2000MB bonnie tests.
The machine is a k6-2 500 with 128MB of ram
Scsi controller is a tekram 390U2W
The disks are seagate 7200RPM's baracudda (18 and 9 gig versions)
I'm using 1 9gig partition of each of the 18 gig drives and the whole
drive on the 2 9 gig drives.
thanks
-sv
