TimGardner - From your dmesg output it appears your bare metal test was running kernel version 2.6.35, is that correct? Also the stack trace looks noticeable different. Is there an easy way I can test that kernel version on my 10.04 LTS setup (i.e. is there a package I can install on Lucid Lynx)?
We also experience this lockup on bare metal which is currently making us very nervous about using NFS for large files. I only produced the virtual machine test case to try and constrain the possible variables that may trigger the bug. What parameters did you use for your VM (CPUs/RAM/HDD and Ubuntu & Kernel versions)? BTW I was never able to reproduce the issue with a single CPU, I have always needed multiple CPUs. I also noticed another difference between your dd test and my gzip test (in addition to the generating CPU load issue I mentioned before) - my gzip process both reads and writes from the NFS mount, whilst your dd only writes. I will see if I can reproduce the issue on my VM using your dd test. Jim -- Writing big files to NFS target causes system lock up https://bugs.launchpad.net/bugs/561210 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
