I have an nforce5 motherboard set up with two disks in a RAID0 configuration. The BIOS menu shows "Striping block" as 64K and "Striping width" as 2. What exactly does this mean? Is 64K the smallest possble chunk size written to a single disk? I want to know what's the optimum value for the "stride" parameter to pass to mke2fs -E when using ext3 with 4K blocks.
I activated the array with dmraid and looked at some of its info output. But the various stride, stripeSize, and stripBlockSize values below don't make sense to me: # dmraid -s *** Active Set name : nvidia_abcbdgeb size : 1953546240 stride : 128 type : stripe status : ok subsets: 0 devs : 2 spares : 0 # dmraid -n /dev/sda (nvidia): 0x000 NVIDIA 0x008 size: 30 0x00c chksum: 4068594016 0x010 version: 100 0x012 unitNumber: 0 0x013 reserved: 0 0x014 capacity: 1953546240 0x018 sectorSize: 512 0x01c productID: STRIPE 931.52G 0x02c productRevision: 100 0x030 unitFlags: 0 0x034 array->version: 6553668 0x038 array->signature[0]: 658758547 0x03c array->signature[1]: 1476699144 0x040 array->signature[2]: 414004829 0x044 array->signature[3]: 332144723 0x048 array->raidJobCode: 0 0x049 array->stripeWidth: 2 0x04a array->totalVolumes: 2 0x04b array->originalWidth: 2 0x04c array->raidLevel: 128 0x050 array->stripeBlockSize: 128 0x054 array->stripeBlockByteSize: 65536 0x058 array->stripeBlockPower: 7 0x05c array->stripeMask: 127 0x060 array->stripeSize: 256 0x064 array->stripeByteSize: 131072 0x068 array->raidJobMark 0 0x06c array->originalLevel 128 0x070 array->originalCapacity 1953546240 0x074 array->flags 0x1 /dev/sdb (nvidia): 0x000 NVIDIA 0x008 size: 30 0x00c chksum: 4068528480 0x010 version: 100 0x012 unitNumber: 1 0x013 reserved: 0 0x014 capacity: 1953546240 0x018 sectorSize: 512 0x01c productID: STRIPE 931.52G 0x02c productRevision: 100 0x030 unitFlags: 0 0x034 array->version: 6553668 0x038 array->signature[0]: 658758547 0x03c array->signature[1]: 1476699144 0x040 array->signature[2]: 414004829 0x044 array->signature[3]: 332144723 0x048 array->raidJobCode: 0 0x049 array->stripeWidth: 2 0x04a array->totalVolumes: 2 0x04b array->originalWidth: 2 0x04c array->raidLevel: 128 0x050 array->stripeBlockSize: 128 0x054 array->stripeBlockByteSize: 65536 0x058 array->stripeBlockPower: 7 0x05c array->stripeMask: 127 0x060 array->stripeSize: 256 0x064 array->stripeByteSize: 131072 0x068 array->raidJobMark 0 0x06c array->originalLevel 128 0x070 array->originalCapacity 1953546240 0x074 array->flags 0x1 Thanks for any clarification. Any other tips for setting up the filesystem would be welcome. I'll be mostly using this box as a media server and some gaming. -- [EMAIL PROTECTED] mailing list
