Hi All, I'm getting some funny behaviour on my MPC8260ADS based system.
I am mounting my DiskOnChip 2000 on /mnt/doc. It all seems fine until I try executing something from it. Trying to execute anything from the doc takes ages, execution will not occur until a good 2 minutes after you have typed the command. I have tried this with the most basic of programs and it still does the same. Everthing runs fine when executed from the nfs mounted root filesystem. I know that this is not a hardware problem because I can boot into Bluecat linux and access the filesystem without problems. I have tried setting Use short timeouts but it makes no difference. I have the latest eldk and 2.4.23 kernel from linuxppc_2_4_devel. Looking into this problem a little deeper we put a logic analyser on the DiskOnChip and discovered. 1) All large reads ( > ~10K get stuck) 2) Looking at the "top" output. Any process that accesses the DOC quickly gets put into the D state (Task Uninterruptable). 3) Kicking off a new process brings the accessing process to life for a short while it then goes back into the task uninterruptable state. It smells like an mtd driver problem but I havn't the foggiest where to start looking for the solution. Any ideas greatly received. Kind Regards, James Bates ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
