Re: LOTS OF BAD STUFF in raid0: raid0145-19990824-2.2.11 is unstable
David Mansfield (david@cobite.com)
Fri, 5 Nov 1999 14:12:02 -0500 (EST)
> David Mansfield writes:
> ...
> >raid0_map bug: hash->zone0==NULL for block 171521844
> >Bad md_map in ll_rw_block
> >EXT2-fs error (device md(9,0)): ext2_free_blocks: Freeing blocks not in
> >datazone - block = 171521844, count = 1
> >raid0_map bug: hash->zone0==NULL for block 959524912
> >Bad md_map in ll_rw_block
> ...
>
> >Here is my current setup:
> ...
> >Hardware: Dual PII 450, DAC960 hardware raid card (completely separate
> >from the raid in question). The raid0 is built on 6 Seagate Cheetah 9gb
> >drives connected to an Adaptec 2940U2W controller. The system hardware is
> >all from VA Research (more reliable??). Also in the system IDE cdrom (not
> >accessed since last reboot). 1GB ram.
>
> On a very similar machine we had a problem which to my recollection
> looked very much the same, we had an intermittent bad drive that was
> pulling down the whole chain; changing out drives fixed the problem
> for us. Always happened under load, when the bad drive was stressed.
>
Well, I've never gotten a single SCSI error from the controller... not to
mention that the block being requested is WAY beyond the end of the
device. If this wasn't a RAID device, this would be one of the 'Attempt
to access beyond end of device' errors that non-raid users have reported
many times for the 2.2 series kernels.
I have also gotten the error when not under any load, about once a month
or so, but never with the alarming frequency of last night!
David
--
/==============================\
| David Mansfield |
| david@cobite.com |
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