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    SubjectHelp needed: Partitioned software raid > 2TB
    Hi everyone,

    I added a drive to a linux software RAID-5 last night. Now that worked
    fine... until I changed the partition table.

    Disk /dev/md_d5: 2499.9 GB, 2499990978560 bytes
    2 heads, 4 sectors/track, 610349360 cylinders
    Units = cylinders of 8 * 512 = 4096 bytes

    Device Boot Start End Blocks Id System
    /dev/md_d5p1 1 244142 976566 83 Linux
    /dev/md_d5p2 244143 5126956 19531256 8e Linux LVM
    /dev/md_d5p3 5126957 488279488 1932610128 8e Linux LVM

    This is how the layout looked before the changes.

    Device Boot Start End Blocks Id System
    /dev/md_d5p1 1 244142 976566 83 Linux
    /dev/md_d5p2 244143 5126956 19531256 8e Linux LVM
    /dev/md_d5p3 5126957 73478448 273405968 8e Linux LVM

    This is how it looks now - the fdisk tools (fdisk/cfdisk) are unable to
    crate a single partition > 2TB. Of course now LVM complains that the PV
    is too small:

    WARNING: Physical Volume /dev/md_d5p3 is too large for underlying device
    PV Size 260.74 GB / not usable 8192.00 EB

    I was able to restore a somewhat close partition table now... Close
    enough for the LVM to work correctly.

    Device Boot Start End Blocks Id System
    /dev/md_d5p1 1 244142 976566 83 Linux
    /dev/md_d5p2 244143 5126956 19531256 8e Linux LVM
    /dev/md_d5p3 5126957 488279495 1932610156 8e Linux LVM
    /dev/md_d5p4 488279496 73478448 488279460 8e Linux LVM

    Where is the inherent limit? The partitioning software, or partitioning
    all by itself?

    Regards,
    Christian
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