On Fri, Nov 05, 1999 at 12:49:07PM -0500, David Mansfield wrote:
> (system details at bottom, summary 2xPII 450, 2.2.13pre14+raid0145latest)
>
> I am STILL having the same old bug in the raid code/kernel that has
> existed for about 6 months, at least. It no longer oopses because the new
> debug code that checks for this (that I suggested BTW, and others have
> triggered as well). But nonetheless this is really, really bad. Does
> anyone have any ideas?
>
> * I am willing to try out test patches to track this down, as I seem to
> have a way to reproduce it *
This is not the only bug in the alpha raid code which is reproducable
well and doesnt get fixed - I tried to look into the kernel but am not
that deep into buffer_head, ll_rw_block and raid things to fix it
myself and i dont blame anyone ...
Easy setup
raid0 of raid5s ...
read:
/dev/md0 raid0 /dev/md1 /dev/md2
/dev/md1 raid5 scsi disks (tried with 6 and 3)
/dev/md2 raid5 scsi disks (tried with 6 and 3)
As soon as you initiate a "mke2fs /dev/md0" the machine
hangs with "Got md request, not good" (md.c -> do_md_request())
I reproduced this with different hardware (machines, harddrives, scsi controllers etc
- Even on sparc ...)
>From the manpage this is a feature which should work.
Flo
--
Florian Lohoff [EMAIL PROTECTED] +49-5241-470566
... The failure can be random; however, when it does occur, it is
catastrophic and is repeatable ... Cisco Field Notice
