Firstly, I apologise for the length of this post but, I'm trying to provide as much info. as possible. I have two (almost) identical drives, on different controllers, in a server appliance. I would like to set them up as several RAID 1 partitions. The only difference in the drives is that one has a 1024kB cache and the other a 512kB cache. My first problem is that when I try to fdisk the second drive, I end up with inconsistent results (see following); *******************************************dmesg output: ALI15X3: IDE controller on PCI bus 00 dev 78 ALI15X3: 100% native mode on irq 14 ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA hda: ST320413A, ATA DISK drive hdc: ST320413A, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 ALI15X3: Ultra DMA enabled hda: ST320413A, 19092MB w/1024kB Cache, CHS=38792/16/63, (U)DMA ALI15X3: Ultra DMA enabled hdc: ST320413A, 19092MB w/512kB Cache, CHS=38792/16/63, (U)DMA md driver 0.90.0 MAX_MD_DEVS=256, MAX_REAL=12 translucent personality registered linear personality registered raid0 personality registered raid1 personality registered raid5 personality registered raid5: measuring checksumming speed raid5: MMX detected, trying high-speed MMX checksum routines pII_mmx : 972.312 MB/sec p5_mmx : 931.926 MB/sec 8regs : 656.082 MB/sec 32regs : 414.909 MB/sec using fastest function: pII_mmx (972.312 MB/sec) *******************************************and later: md.c: sizeof(mdp_super_t) = 4096 Partition check: hda: hda1 hda2 < hda5 hda6 > hda3 hda4 hdc: unknown partition table autodetecting RAID arrays autorun ... ... autorun DONE. *******************************************output of fdisk /dev/hda : Disk /dev/hda: 16 heads, 63 sectors, 38792 cylinders Units = cylinders of 1008 * 512 bytes Device Boot Start End Blocks Id System /dev/hda1 1 1524 768095+ 83 Linux /dev/hda2 1525 1846 162288 5 Extended /dev/hda3 1847 2253 205128 83 Linux /dev/hda4 2254 38792 18415656 83 Linux /dev/hda5 1525 1585 30743+ 83 Linux /dev/hda6 1586 1846 131543+ 82 Linux swap *******************************************and in expert mode : Disk /dev/hda: 16 heads, 63 sectors, 38792 cylinders Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID 1 00 0 2 0 15 63 1023 1 1536191 83 2 00 15 63 1023 15 63 1023 1536192 324576 05 3 00 15 63 1023 15 63 1023 1860768 410256 83 4 00 15 63 1023 15 63 1023 2271024 36831312 83 5 00 15 63 1023 15 63 1023 1 61487 83 6 00 15 63 1023 15 63 1023 1 263087 82 *******************************************output of fdisk /dev/hdc : Disk /dev/hdc: 16 heads, 63 sectors, 38792 cylinders Units = cylinders of 1008 * 512 bytes Device Boot Start End Blocks Id System /dev/hdc1 1 1524 768064+ 83 Linux /dev/hdc2 1525 1846 162288 5 Extended /dev/hdc3 1847 2253 205128 83 Linux /dev/hdc4 2254 38792 18415656 83 Linux /dev/hdc5 1525 1585 30712+ 83 Linux /dev/hdc6 1586 1846 131512+ 82 Linux swap *******************************************and in expert mode : Disk /dev/hdc: 16 heads, 63 sectors, 38792 cylinders Nr AF Hd Sec Cyl Hd Sec Cyl Start Size ID 1 00 1 1 0 15 63 1023 63 1536129 83 2 00 15 63 1023 15 63 1023 1536192 324576 05 3 00 15 63 1023 15 63 1023 1860768 410256 83 4 00 15 63 1023 15 63 1023 2271024 36831312 83 5 00 15 63 1023 15 63 1023 63 61425 83 6 00 15 63 1023 15 63 1023 63 263025 82 ******************************************* NOTE the discrepencies in the Hd and Sec values for the first partition. My questions are two; 1: How can I get the partition tables identical? 2: Once this is achieved, can I then set up RAID 1 ala the Software-RAID HOWTO? Or is there a better way? All input cheerfully and gratefully accepted :-) Once again, my apologies for the length of the post. Brad Hubbard Congo Systems 12 Northgate Drive, Thomastown, Victoria, Australia 3074 Email: [EMAIL PROTECTED] Ph: +61-3-94645981 Fax: +61-3-94645982 Mob: +61-419107559 - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to [EMAIL PROTECTED]
