has anyone installed 5.1 from a SCSI CD?

From: Sergey Babkin (babkin_at_bellatlantic.net)
Date: 09/29/03

  • Next message: Vladimir B. Grebenschikov: "nmdm question" 
    Date: Sun, 28 Sep 2003 18:14:25 -0400
To: hackers@freebsd.org

    Hi all,

    I've got the compiler on my -current partition hosed (I did a make
    install at a time when it was unstable, and now it dies when
    recompiling -current), so I decided to re-base it with 5.1.
    That's when I discovered an unpleasent issue: it could not mount
    SCSI CD-ROM! The devices (I have two of them) show up fine in dmesg
    and the entries in /dev are created fine but then when I try
    to mount it, it says that the operation is not supported by
    the device! Huh? Someone has been playing too much with the
    CD driver.

    BTW, I have another related issue too: since at least 4.7
    all the disk device nodes have charcater device entries in /dev.
    That's very, very wrong. Even though there may be no difference
    any more between the charcater and block drivers, the type of
    device node still conveys the information about device types
    to the applications. One case in point being a viewer application
    (if anyone is interested, http://nac.sf.net ) which must handle
    the sequential and random-access devices differently: for
    the random-access device it can page in the data for viewing on demand
    (and discard when some part is not viewed, since it can be read
    again easily), with possibility to jump to a random address, while
    for a sequential device it must read the data sequentially to a
    local buffer and never discard data from that buffer. It works
    fine on every system except the recent FreeBSD :-(

    -SB
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