On Monday May 15, jlb17@xxxxxxxx wrote: > I've got a x86_64 system with 2 3ware 9550SX-12s, each set up as a raid5 > w/ a hot spare. Over that, I do a software raid0 stripe via: > > mdadm -C /dev/md0 -c 512 -l 0 -n 2 /dev/sd[bc]1 > > Whenever I try to format md0 (I've tried both mke2fs and mkfs.xfs), the > system OOPSes. I'm running centos-4 with the default kernel, but I've > upgraded the 3ware driver/firmware to the most recent versions. Based on > the OOPS I'll paste below, who should I be blaming for this crash? Any > ideas on how to fix it? Thanks. Try this. http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=1eb29128c644581fa51f822545921394ad4f719f Raid0 has troubles in 64bit machines back in 2.6.9 days. NeilBrown. > > Unable to handle kernel NULL pointer dereference at 0000000000000027 RIP: > <ffffffffa0194ab6>{:raid0:raid0_make_request+448} > PML4 3e913067 PGD 7b652067 PMD 0 > Oops: 0000 [1] SMP > CPU 1 > Modules linked in: raid0 md5 ipv6 parport_pc lp parport i2c_dev i2c_core sunrpc ipt_REJECT ipt_state ip_conntrack iptable_filter ip_tables dm_mirror dm_mod button battery ac ohci_hcd hw_random tg3 floppy ext3 jbd 3w_9xxx(U) 3w_xxxx sd_mod scsi_mod > Pid: 2955, comm: mke2fs Not tainted 2.6.9-34.ELsmp - 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