On 01/10/2007, Wolfgang Denk <wd@xxxxxxx> wrote: > Dear Dale, > > in message <8a24fb800710010216m21cd7734p4c19df1aa7dd5564@xxxxxxxxxxxxxx> you wrote: > > > > I have a board with an AMCC440 processor, running RAID5 using the > > async-tx interface. In general, it works well, but I have found a test > > case that consistently causes a hard lockup of the entire system. > > Please make sure to use latest code - we found a bug recently. Latest code from Dan or latest code from denx.de? I grabbed the latest code from Dan, but I'm having trouble cloning denx.de: "remote: error: object directory /home/git/linux-2.6/.git/objects does not exist; check .git/objects/info/alternates." > > > What makes this case odd is that I have only been able to generate it > > when accessing disks that are on two separate HBAs - in my case > > mpt-fusion based SAS HBAs. Once two HBAs are in use, the bug is > > trivial to repeat. I simply create a RAID5 using disks from each HBA, > > wait for it to resync, and then run > > We saw similar problems, in our case they showed up only with a large > number of disks in combination with big kernel pages sizes (64 kB). > The problem occurs for me with both 4k and 64k pages. Regards, Dale - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
