"Stephen C. Tweedie" wrote:
>
> Hi,
>
> On Mon, 29 Mar 1999 11:28:25 +0100, Richard Jones
> <[EMAIL PROTECTED]> said:
>
> > Not so fast there :-)
>
> > Mar 26 20:52:35 fred kernel: EXT2-fs error (device md(9,0)): ext2_free_blocks:
>Freeing blocks not in datazone - block = 550046767, count = 1
> > Mar 26 20:52:36 fred kernel: EXT2-fs error (device md(9,0)): ext2_free_blocks:
>Freeing blocks not in datazone - block = 536870912, count = 1
> > Mar 27 10:47:59 fred kernel: EXT2-fs error (device md(9,0)):
> > ext2_free_blocks: Freeing blocks not in datazone - block = 538609421,
> > count = 1
>
> these are block numbers (in hex): 20C90C2F, 20000000, 201A870D.
> Something is randomly flipping bit 29 in the block addresses (the block
> numbers are entirely valid apart from this). This may be a disk or
> controller fault, but I'd replace the cabling first.
Thanks for all those who replied.
It's not a 2.2.4 fault. It occurs with 2.0.36 and 2.2.3.
It's very rare - on average under one error per hour under
heavy load.
I discovered to my shame that the computer was ordered
without ECC memory. I'll get this replaced later this
week.
Can it be a cabling fault? I thought that SCSI had parity
checking.
Anyway, RAID is not under suspicion until I've had
a chance to upgrade the hardware.
Rich.
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Original message content Copyright © 1999 Richard Jones
