Thanks for the info Neil, i will have to look at 2.4 again, ill try the 2.4.18rc? hoping it will be more stable than the others i have tried in the past. Any recommendations for the sparc64 ? Thanks again. Brin -----Original Message----- From: Neil Brown [mailto:neilb@cse.unsw.edu.au] Sent: Friday, 22 February 2002 15:22 To: Brinley Craig Cc: linux-raid@vger.kernel.org Subject: Re: raidsetfaulty / mdctl --fail problem On Wednesday February 20, brinley.craig@godfreyhirst.com wrote: > Hi All, > > i stuffed up the setup of the raid and have 3 partitions in a raid 1 array, > instead of 2 partitions and a hot spare. i also want to move the partitions > around for better load balancing on the scsi channels. > i dont want to blow away the data, so i tried to raidsetfaulty, > but i get an error. i also tried mdctl, but get some wierd results. > may indicate something? or maybe just a simple syntax error. > when i examine each drive in the array, the state info looks corrupt? > thanks for any help. > Brin > > > /sbin/raidsetfaulty /dev/md0 /dev/sdj1 > /dev/md0: can not set disk faulty: invalid argument. > /sbin/mdctl --fail /dev/md0 /dev/sdj1 > mdctl: set disk faulty failed for /dev/sdj1: Invalid argument > > proc > ------ > md0 : active raid1 sdj1[1] sdb1[2] sda1[0] 14272 blocks [3/3] [UUU] > md1 : active raid1 sda4[0] 8296896 blocks [3/1] [U__] > > uname > --------- > Linux sunny 2.2.19-6.2.12smp #1 SMP Fri Oct 26 12:56:49 EDT 2001 sparc64 ^^^^^^^ ^^^^^^^ RAID in 2.2 has problems on SPARC. The superblock contains a 64bit value which is would not normally be 64bit aligned. i386 machines are happy with it being 32bit aligned and the resulting superblock is 1024 bytes. Sparc pads to a 64bit alignment and the resulting superblock is 1028 (I think) bytes which is just wrong. in 2.4, this 64bit value is replaced by 2 32bit values and things are happiers. mdctl assumes a the superblock looks like it does on i386 machines, and on 2.4 machines, and so reports bogus information when you do mdctl --examine. As for the orignal problem: I'm afraid that raid is not being actively support in 2.2 (that I know of). Is there any chance of upgrading to 2.4??? NeilBrown PLEASE NOTE: Whilst we use software to detect viruses we exclude all liability for the presence of any virus or alike in any attachments. - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
