Hi, I have been trying to set up a Raid 1 mirror using Redhat 6.0 using stock kernel and raidtools that are included on their CD. I have tried to follow the Software How-To & read all the newsgroups etc. including linux-raid archives. I am not a newbie to computers but I am to linux. I can follow directions if they are correct, I have read in the newsgroups or have been told by RedHat (using 30day phone support) many conflicting directions. I would like to use stock RH 6.0 kernel & raidtools as this is what I purchased from them with Raid 0,1,5 support. Has anyone been able to make this work, and if so how? Here are the system specs. & files: <-----------------------------------------------> Mainboard: SuperMicro P6DBU with onboard Adaptec 7890 Ultra II SCSI controller CPU: Two Intel PII-400's Ram: 512 MB (four 128mb PC100 SDRAM) Disk drives: Two 4.5 GB Ultra II SCSI 5.5ms Seagate cheetah's (Set to run as UW's at 40 mb) Network Card: 3COM 10/100MB Video Card: S3 virge <-------------------------------------------------> [root@linux /etc]# cat fstab /dev/sda1 / ext2 defaults 1 1 /dev/fd0 /mnt/floppy ext2 noauto 0 0 /dev/cdrom /mnt/cdrom iso9660 noauto,ro 0 0 none /proc procdefaults 0 0 none /dev/pts devpts mode=0622 0 0 <---------------------------------------------> [root@linux /etc]# cat raidtab raiddev /dev/md0 raid-level 1 nr-raid-disks 2 nr-spare-disks 0 chunk-size 4 persistent-superblock 1 device /dev/sda1 raid-disk 0 device /dev/sdb1 raid-disk 1 <---------------------------------------------> [root@linux /proc]# cat mdstat Personalities : read_ahead not set unused devices: <none> <---------------------------------------------------> When I type (mkraid /dev/md0) I get the following error: disk0: /dev/sda1, 307641 KB, raid superblock at 3076352KB /dev/sda1 is mounted mkraid aborted <----------------------------------------------------> [root@linux /]# /sbin/fdisk -l Disk /dev/sda: 255 heads, 63 sectors, 553 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 383 3076416 fd Unknown /dev/sda2 384 553 1365525 5 Extended Disk /dev/sdb: 255 heads, 63 sectors, 553 cylinders Units = cylinders of 16065 * 512 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 383 3076416 fd Unknown /dev/sdb2 384 553 1365525 fd Unknown <---------------------------------------------------------------> [root@linux log]# cat dmesg Linux version 2.2.5-15smp ([EMAIL PROTECTED]) (gcc version egcs-2.91.66 19990314 /Linux (egcs-1.1.2 release)) #1 SMP Mon Apr 19 22:43:28 EDT 1999 Intel MultiProcessor Specification v1.4 Virtual Wire compatibility mode. OEM ID: INTEL Product ID: 440BX APIC at: 0xFEE00000 Processor #0 Pentium(tm) Pro APIC version 17 Processor #1 Pentium(tm) Pro APIC version 17 I/O APIC #2 Version 17 at 0xFEC00000. Processors: 2 mapped APIC to ffffe000 (fee00000) mapped IOAPIC to ffffd000 (fec00000) Detected 400916850 Hz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 399.77 BogoMIPS Memory: 63728k/66556k available (1044k kernel code, 416k reserved, 976k data, 68k init) VFS: Diskquotas version dquot_6.4.0 initialized Checking 386/387 coupling... OK, FPU using exception 16 error reporting. Checking 'hlt' instruction... OK. POSIX conformance testing by UNIFIX mtrr: v1.26 (19981001) Richard Gooch ([EMAIL PROTECTED]) per-CPU timeslice cutoff: 100.22 usecs. CPU0: Intel Pentium II (Deschutes) stepping 03 calibrating APIC timer ... ..... CPU clock speed is 400.9187 MHz. ..... system bus clock speed is 100.2294 MHz. Booting processor 1 eip 2000 Calibrating delay loop... 400.59 BogoMIPS OK. CPU1: Intel Pentium II (Deschutes) stepping 03 Total of 2 processors activated (800.36 BogoMIPS). enabling symmetric IO mode... ...done. ENABLING IO-APIC IRQs init IO_APIC IRQs IO-APIC pin 0, 10, 11, 18, 20, 21, 22, 23 not connected. number of MP IRQ sources: 18. number of IO-APIC registers: 24. testing the IO APIC....................... .... register #00: 02000000 ....... : physical APIC id: 02 .... register #01: 00170011 ....... : max redirection entries: 0017 ....... : IO APIC version: 0011 .... register #02: 00000000 ....... : arbitration: 00 .... IRQ redirection table: NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect: 00 000 00 1 0 0 0 0 0 0 00 01 000 00 0 0 0 0 0 1 1 59 02 0FF 0F 0 0 0 0 0 1 1 51 03 000 00 0 0 0 0 0 1 1 61 04 000 00 0 0 0 0 0 1 1 69 05 000 00 0 0 0 0 0 1 1 71 06 000 00 0 0 0 0 0 1 1 79 07 000 00 0 0 0 0 0 1 1 81 08 000 00 0 0 0 0 0 1 1 89 09 000 00 0 0 0 0 0 1 1 91 0a 000 00 1 0 0 0 0 0 0 00 0b 000 00 1 0 0 0 0 0 0 00 0c 000 00 0 0 0 0 0 1 1 99 0d 000 00 1 0 0 0 0 0 0 00 0e 000 00 0 0 0 0 0 1 1 A1 0f 000 00 0 0 0 0 0 1 1 A9 10 0FF 0F 1 1 0 1 0 1 1 B1 11 0FF 0F 1 1 0 1 0 1 1 B9 12 000 00 1 0 0 0 0 0 0 00 13 0FF 0F 1 1 0 1 0 1 1 B9 14 000 00 1 0 0 0 0 0 0 00 15 000 00 1 0 0 0 0 0 0 00 16 000 00 1 0 0 0 0 0 0 00 17 000 00 1 0 0 0 0 0 0 00 IRQ to pin mappings: IRQ0 -> 2 IRQ1 -> 1 IRQ3 -> 3 IRQ4 -> 4 IRQ5 -> 5 IRQ6 -> 6 IRQ7 -> 7 IRQ8 -> 8 IRQ9 -> 9 IRQ10 -> 16 IRQ11 -> 17-> 19 IRQ12 -> 12 IRQ13 -> 13 IRQ14 -> 14 IRQ15 -> 15 .................................... done. PCI: PCI BIOS revision 2.10 entry at 0xfdb81 PCI: Using configuration type 1 PCI: Probing PCI hardware PCI: Enabling I/O A1 device 00:3a Linux NET4.0 for Linux 2.2 Based upon Swansea University Computer Society NET3.039 NET4: Unix domain sockets 1.0 for Linux NET4.0. NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP Initializing RT netlink socket Starting kswapd v 1.5 Detected PS/2 Mouse Port. Serial driver version 4.27 with MANY_PORTS MULTIPORT SHARE_IRQ enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 16550A pty: 256 Unix98 ptys configured Real Time Clock Driver v1.09 RAM disk driver initialized: 16 RAM disks of 4096K size PIIX4: IDE controller on PCI bus 00 dev 39 PIIX4: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:pio, hdb:pio hdb: LEOPTICS INC. 32X CDROM, ATAPI CDROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 hdb: ATAPI 0X CD-ROM drive, 240kB Cache Uniform CDROM driver Revision: 2.54 Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 md driver 0.90.0 MAX_MD_DEVS=256, MAX_REAL=12 raid5: measuring checksumming speed raid5: using high-speed MMX checksum routine pII_mmx : 958.215 MB/sec p5_mmx : 937.260 MB/sec 8regs : 691.515 MB/sec 32regs : 495.681 MB/sec using fastest function: pII_mmx (958.215 MB/sec) scsi : 0 hosts. scsi : detected total. md.c: sizeof(mdp_super_t) = 4096 Partition check: RAMDISK: Compressed image found at block 0 autodetecting RAID arrays autorun ... ... autorun DONE. VFS: Mounted root (ext2 filesystem). (scsi0) <Adaptec AIC-7890/1 Ultra2 SCSI host adapter> found at PCI 14/0 (scsi0) Wide Channel, SCSI ID=7, 32/255 SCBs (scsi0) Downloading sequencer code... 374 instructions downloaded scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.15/3.2.4 <Adaptec AIC-7890/1 Ultra2 SCSI host adapter> scsi : 1 host. (scsi0:0:0:0) Synchronous at 40.0 Mbyte/sec, offset 15. Vendor: SEAGATE Model: ST34502LW Rev: 0006 Type: Direct-Access ANSI SCSI revision: 02 Detected scsi disk sda at scsi0, channel 0, id 0, lun 0 (scsi0:0:1:0) Synchronous at 40.0 Mbyte/sec, offset 15. Vendor: SEAGATE Model: ST34502LW Rev: 0006 Type: Direct-Access ANSI SCSI revision: 02 Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0 SCSI device sda: hdwr sector= 512 bytes. Sectors= 8888924 [4340 MB] [4.3 GB] sda: sda1 sda2 < > SCSI device sdb: hdwr sector= 512 bytes. Sectors= 8888924 [4340 MB] [4.3 GB] sdb: sdb1 sdb2 autodetecting RAID arrays (read) sda1's sb offset: 3076352 [events: 1fac8ce5] md: invalid raid superblock magic on sda1 md: sda1 has invalid sb, not importing! could not import sda1! (read) sdb1's sb offset: 3076352 [events: 1fac8ce5] md: invalid raid superblock magic on sdb1 md: sdb1 has invalid sb, not importing! could not import sdb1! (read) sdb2's sb offset: 1365440 [events: 2eb96cb1] md: invalid raid superblock magic on sdb2 md: sdb2 has invalid sb, not importing! could not import sdb2! autorun ... ... autorun DONE. VFS: Mounted root (ext2 filesystem) readonly. change_root: old root has d_count=1 Trying to unmount old root ... okay Freeing unused kernel memory: 68k freed <--------------------------------------------------------------------> Thanks in advance, Ken Smith