On Sunday December 3, [EMAIL PROTECTED] wrote: > I'm new to the raid under linux world, and had a question. Sorry if several > posts have been made by me previously, I had some trouble subscribing to the > list... > > I successfully installed redhat 6.2 with raid 0 for two drives on a sun > ultra 1. However i'm trying to rebuild the kernel, and thought i'd play > with 2.4test11 since it has the raid code built in, but to no avail. while > it will auto detect the raid drives fine from what i can tell, the kernel > always panics with "EX2FS Unable Ro Read Superblock" any thoughts on what i > might be doing wrong that is causing this error. sorry if this has been > brought up before > > dave > > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to [EMAIL PROTECTED] Details might help. e.g. a copy of the boot logs when booting under 2.2.whatever and it working, and similar logs with it booting under 2.4.0test11 and it not working, though they may not be as easiy to get if your root filesystem doesn't come up. There were issues in the 2.2 raid code on Sparc hardware which may have been resolved by redhat, and may have been resolved differently in 2.4. Look for a line like: md.c: sizeof(mdp_super_t) = 4096 is the number 4096 in both cases? If not, then that is probably the problem. It is quite possible that raid in 2.4 on sparc is not upwards compatible with raid in redhat6.2 on sparc. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to [EMAIL PROTECTED]