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On Dec 19, 2007 10:33 AM, Yahya Mohammad <mfyahya@×××××.com> wrote: |
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> I have an nforce5 motherboard set up with two disks in a RAID0 |
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> configuration. The BIOS menu shows "Striping block" as 64K and "Striping |
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> width" as 2. What exactly does this mean? Is 64K the smallest possble |
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> chunk size written to a single disk? I want to know what's the optimum |
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> value for the "stride" parameter to pass to mke2fs -E when using ext3 |
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> with 4K blocks. |
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> |
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> I activated the array with dmraid and looked at some of its info output. |
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> But the various stride, stripeSize, and stripBlockSize values below |
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> don't make sense to me: |
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> |
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> # dmraid -s |
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> *** Active Set |
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> name : nvidia_abcbdgeb |
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> size : 1953546240 |
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> stride : 128 |
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> type : stripe |
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> status : ok |
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> subsets: 0 |
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> devs : 2 |
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> spares : 0 |
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> |
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> # dmraid -n |
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> /dev/sda (nvidia): |
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> 0x000 NVIDIA |
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> 0x008 size: 30 |
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> 0x00c chksum: 4068594016 |
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> 0x010 version: 100 |
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> 0x012 unitNumber: 0 |
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> 0x013 reserved: 0 |
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> 0x014 capacity: 1953546240 |
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> 0x018 sectorSize: 512 |
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> 0x01c productID: STRIPE 931.52G |
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> 0x02c productRevision: 100 |
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> 0x030 unitFlags: 0 |
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> 0x034 array->version: 6553668 |
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> 0x038 array->signature[0]: 658758547 |
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> 0x03c array->signature[1]: 1476699144 |
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> 0x040 array->signature[2]: 414004829 |
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> 0x044 array->signature[3]: 332144723 |
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> 0x048 array->raidJobCode: 0 |
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> 0x049 array->stripeWidth: 2 |
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> 0x04a array->totalVolumes: 2 |
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> 0x04b array->originalWidth: 2 |
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> 0x04c array->raidLevel: 128 |
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> 0x050 array->stripeBlockSize: 128 |
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> 0x054 array->stripeBlockByteSize: 65536 |
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> 0x058 array->stripeBlockPower: 7 |
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> 0x05c array->stripeMask: 127 |
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> 0x060 array->stripeSize: 256 |
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> 0x064 array->stripeByteSize: 131072 |
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> 0x068 array->raidJobMark 0 |
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> 0x06c array->originalLevel 128 |
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> 0x070 array->originalCapacity 1953546240 |
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> 0x074 array->flags 0x1 |
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> |
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> /dev/sdb (nvidia): |
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> 0x000 NVIDIA |
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> 0x008 size: 30 |
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> 0x00c chksum: 4068528480 |
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> 0x010 version: 100 |
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> 0x012 unitNumber: 1 |
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> 0x013 reserved: 0 |
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> 0x014 capacity: 1953546240 |
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> 0x018 sectorSize: 512 |
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> 0x01c productID: STRIPE 931.52G |
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> 0x02c productRevision: 100 |
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> 0x030 unitFlags: 0 |
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> 0x034 array->version: 6553668 |
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> 0x038 array->signature[0]: 658758547 |
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> 0x03c array->signature[1]: 1476699144 |
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> 0x040 array->signature[2]: 414004829 |
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> 0x044 array->signature[3]: 332144723 |
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> 0x048 array->raidJobCode: 0 |
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> 0x049 array->stripeWidth: 2 |
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> 0x04a array->totalVolumes: 2 |
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> 0x04b array->originalWidth: 2 |
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> 0x04c array->raidLevel: 128 |
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> 0x050 array->stripeBlockSize: 128 |
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> 0x054 array->stripeBlockByteSize: 65536 |
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> 0x058 array->stripeBlockPower: 7 |
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> 0x05c array->stripeMask: 127 |
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> 0x060 array->stripeSize: 256 |
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> 0x064 array->stripeByteSize: 131072 |
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> 0x068 array->raidJobMark 0 |
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> 0x06c array->originalLevel 128 |
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> 0x070 array->originalCapacity 1953546240 |
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> 0x074 array->flags 0x1 |
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> |
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> Thanks for any clarification. Any other tips for setting up the |
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> filesystem would be welcome. I'll be mostly using this box as a media |
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> server and some gaming. |
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> -- |
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> gentoo-user@g.o mailing list |
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> |
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> |
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I suggest reading this: |
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http://gentoo-wiki.com/HOWTO_Gentoo_Install_on_Bios_(Onboard)_RAID |
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|
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-- |
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- Mark Shields |
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