On Mon, Sep 20, 2004 at 12:00:19PM -0400, David Schultz wrote: > This sounds like an I/O hang. I've been having similar problems > related to WRITE_DMA and READ_DMA timeouts from the ata driver in > the last week or so, as discussed last week on this list. Are you > seeing these messages from the kernel? Like these? ad0: TIMEOUT - READ_DMA retrying (2 retries left) LBA=47240127 ad0: WARNING - READ_DMA no interrupt but good status ad1: TIMEOUT - READ_DMA retrying (2 retries left) LBA=165370263 ad1: WARNING - READ_DMA no interrupt but good status ad0 is a 2 year old 40GB disk, ad1 is 1 week old 120GB disk. > Julian suggested disabling > preemption, which I haven't tried yet, but other people report > limited success. I'm not running a kernel with 'options PREEMPTION' compiled in... N -- FreeBSD: The Power to Serve http://www.freebsd.org/ (__) FreeBSD Documentation Project http://www.freebsd.org/docproj/ \\\'',) \/ \ ^ --- 15B8 3FFC DDB4 34B0 AA5F 94B7 93A8 0764 2C37 E375 --- .\._/_)
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