lkml.org 
[lkml]   [1996]   [Jun]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    From
    SubjectRe: possible SCSI device numbering solution
    Date
    > > There is little point going through the disruption that changing it would 
    > > be, to change it again, so we may as well go to a 64 bit dev_t. One
    > > thing tho, would we even need more than 65536 major devices? ie 16 bit
    > > major, 48 bit minor (or 281474976710656 minor numbers (2.8*10^14) ;)
    >
    > I'm reminded of somebody saying, "they'll never need more than 640k". :-/
    >
    > But anyhoot, 16/48 bit majors/minors seems reasonable to me.
    > Of course, this is a blind guess - we really should discuss how
    > majors/minors will be assigned and used first. We could easily gobble up
    > 128-bits with a poor system, or, improve the current one and stick with
    > 16-bits.

    any idea how the "ls -l" output should look like for larger dev_t ?

    crw-r----- 1 root kmem 1, 2 Aug 29 1992 /dev/kmem
    brw-rw---- 1 root root 65535, 281474976710655 Apr 1 2001 /dev/last_dev_16_48
    brw-rw---- 1 root root 4294967295, 4294967295 Apr 1 2001 /dev/last_dev_32_32
    brw-rw---- 1 root disk 8, 0 May 4 1994 /dev/sda

    doesn't look too nice ;-)

    Harald
    --
    All SCSI disks will from now on ___ _____
    be required to send an email notice 0--,| /OOOOOOO\
    24 hours prior to complete hardware failure! <_/ / /OOOOOOOOOOO\
    \ \/OOOOOOOOOOOOOOO\
    \ OOOOOOOOOOOOOOOOO|//
    Harald Koenig, \/\/\/\/\/\/\/\/\/
    Inst.f.Theoret.Astrophysik // / \\ \
    koenig@tat.physik.uni-tuebingen.de ^^^^^ ^^^^^


    \
     
     \ /
      Last update: 2005-03-22 13:37    [W:0.019 / U:0.328 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site