-----Original Message-----
From: Mark Lord [mailto:[email protected]]
Sent: Wednesday, November 14, 2007 12:57 PM
To: Morrison, Tom
Cc: Jeff Garzik; [email protected]; [email protected]
Subject: Re: 2.6.23.1 - sata_mv (7042) hang with large file operations
Morrison, Tom wrote:
>
<snip >
> The problem comes ONLY when I am doing large file operations
> (e.g.: just copying a file) to/from the SATA drives behind
> the subject line 7042....it just hangs after about 10-15
> seconds into the copy...
>
> How large a file causes the hang - you ask - well, somewhere
> between 100Meg & 500Meg...
>
<snip other drivel>
::: Can you give me exact details of how to set up and reproduce this?
::: -- Kernel version
Linux-2.6.23.1
NOTE: I am using ppc (arch/ppc instead of arch/powerpc)
::: -- number/config/model of drives
2x250GIG Western Digital - 3 partitions (largest (/dev/sda3
~200Gig - formatted to ext2).
7042 PEX on a MPC8548 Board
::: -- exact command line sequence to cause the failure
NFS mount root file system (I am currently rebuild to take away
the NFS file system dependency) - /dev/sda3 is drive in
question...
a) mount /dev/sda3 /mnt/src
b) cp large_500Meg_file /mnt/src/.
==========================================================
==========================================================
NOTE: this does NOT fail on a 2.6.11 kernel version!!!!
So I do NOT think it's a hardware problem!
It could be a PEX related problem with arch/ppc - I would
expect under heavy pounding with smaller files it would
fail as well - but it does NOT)
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