Re: 2.6.20: reproducible hard lockup with RAID-5 resync

2007-02-18 Thread Corey Hickey
Neil Brown wrote: Ok, so the difference is CONFIG_SYSFS_DEPRECATED. If that is not defined, the kernel locks up. There's not a lot of code under #ifdef/#ifndef CONFIG_SYSFS_DEPRECATED, but since I'm not familiar with any of it I don't expect trying to locate the bug on my own would be very

Re: 2.6.20: reproducible hard lockup with RAID-5 resync

2007-02-17 Thread Corey Hickey
Corey Hickey wrote: When I get home (late) tonight I'll try running dd and badblocks on the corresponding drives and partitions. Well, I haven't been able to reproduce the problem that way. I tried the following: $ dd id=/dev/hda of=/dev/null $ badblocks /dev/hda $ badblocks -n /dev/hda

Re: 2.6.20: reproducible hard lockup with RAID-5 resync

2007-02-16 Thread Neil Brown
On Thursday February 15, [EMAIL PROTECTED] wrote: I think I have found an easily-reproducible bug in Linux 2.6.20. I have already applied the Fix various bugs with aligned reads in RAID5 patch, and that had no effect. It appears to be related to the resync process, and makes the system lock

Re: 2.6.20: reproducible hard lockup with RAID-5 resync

2007-02-16 Thread Corey Hickey
Neil Brown wrote: On Thursday February 15, [EMAIL PROTECTED] wrote: I think I have found an easily-reproducible bug in Linux 2.6.20. I have already applied the Fix various bugs with aligned reads in RAID5 patch, and that had no effect. It appears to be related to the resync process, and makes

Re: 2.6.20: reproducible hard lockup with RAID-5 resync

2007-02-16 Thread Corey Hickey
Neil Brown wrote: On Thursday February 15, [EMAIL PROTECTED] wrote: I think I have found an easily-reproducible bug in Linux 2.6.20. I have already applied the Fix various bugs with aligned reads in RAID5 patch, and that had no effect. It appears to be related to the resync process, and makes

2.6.20: reproducible hard lockup with RAID-5 resync

2007-02-15 Thread Corey Hickey
I think I have found an easily-reproducible bug in Linux 2.6.20. I have already applied the Fix various bugs with aligned reads in RAID5 patch, and that had no effect. It appears to be related to the resync process, and makes the system lock up, hard. The steps to reproduce are: 1. Be running