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SubjectRe: EXT2-fs corrupt after vanilla install
> Hello,
>
> Seeking help on reproducible root file system corruption on a
> vanilla Slackware 2.2.13 with PIII/500, 512MB, 37GB IDE UDMA IBM
> on a Supermicro P6SBA motherboard. Atapi CD-ROM and hard disk
> are on the same controller.

Our config here has been several (ok, two) Epox EP-ZX370A based
machines with Celeron PPGA processors, atapi disk/cdroms on same
controller. Vanilla Slackware 7 (2.2.13) installs.


> After many reinstalls and tests I come think that the file system
> is already broken before actual use - just no idea what I did wrong.

In one of our machines, the install would mostly hang due to fs-corruption.
This machine was subjected to a complete hardware replacement (everything
but the chassis), and the fault was found to be on the AGP-card (Matrox
G200). The problems persisted after the card was replaced, but did not show
up in Windows, nor during a night-long RAM stress-test.

The other would seem stable for quite some time of use (normal desktop
workstation), before thrashing the filesystem.

Both installs were performed the same way we usually do them, so I don't
really think it was user error :-)

After replacing the power supplies, both machines now seem stable - one
still used as a desktop, the other is not used.

> The system passes Doug Ledfords "badblocks" stress tests ok and
> runs fine for a month including kernel compiles and other sanity
> checks - until the first reboot with fsck.
> Will appreciate any hint on what to do.
>

On a hunch I just now performed an extensive set of cd->hd writes against a
filesystem, with multiple cp's running at the same time. The filesystem is
44.5% fragmented now, but still intact. Altho this test is inconclusive, I'd
have thought that any errors occuring due to cdrom reads during disk writes
should crop up now.

It seems that the only rational possibility is a flaky powersupply (we've been
using Task TK-920TX's, which seem to die within three months of use).

Try to replace your psu with a 'name' brand, and see if that helps.

Yours,
-Simen

--
Simen Thoresen, Beowulf-cleaner and random artist.

Er det ikke rart?
The gnu RART-project on http://valinor.dolphinics.no:1080/~simentt/rart

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