Re: SATA_SX4: data corruption with simultaneous writes

[Johny A <kernel@agotnes.com>]

Jeff et al,

I found this one on the mailing-list;
http://marc.theaimsgroup.com/?l=linux-ide&m=109749133709795&w=2

and have the same issues as described there, and also in the previous 
mails in this thread.

The difference is, I can reproduce this with the simplest possible setup;

I have an older Asus Mobo with an AMD1.33GHz CPU,
1 Promise SX4 SATA controller (0000:00:0a.0 RAID bus controller: Promise 
Technology, Inc.: Unknown device 6622 (rev 01))
2 Seagate  ST380817AS, Rev: 3.42 (80 GB SATA) disks

Disks each have 1 large partition with ext2 on them.

1. I boot off a Gentoo LiveCD  running 2.6.9
2. I scp over some 180 MB simultaneously to the two disks across the 
network, one shell copying to 1 disk only
3. Unzip the .bz2 and .gz files just copied the files, again 1 shell 
working on each disk (no cross disk stuff going on at all).

Typically, within a few minutes at most of the unzipping starting I get 
CRC errors on the files. No errors in dmesg necessarily. Sometimes I get 
errors unzipping - unmount the drive and run fsck which reports no 
errors - very insidious!

I'd like the card to work - hey, I got one! and am willing to use my 
setup for testing of new driver versions. I'm useful with C, but not a 
kernel hacker, give me pointers to what needs done and I'll get it done, 
no worries...

Let me know if I can help getting this thing fixed!

Thanks,

Johny A