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    SubjectRe: IDE Tape problem in 2.2.16 (bug?)

    It is for removable/ejectable media that TR-4 is not generally done.
    Basically it is a noise maker if you have to push/pop the media in to
    place. Note that ATAPI is not my strong suit, but that is what I read.

    Have to go dig in the SFF stuff and Gadi's notes.

    On Wed, 9 Aug 2000, Roger Gammans wrote:

    > On Tue, Aug 08, 2000 at 02:58:56PM -0400, pb@dev.localweb.com wrote:
    > >
    > > I'm using a Seagate IDE tape drive (I understand it's basically a Travan
    > > tape drive) on kernel 2.2.16, and when I read from it, it doesn't read the
    > > last 18k from my backups; everything else seems to work.
    > > Here's the information the kernel prints for this:
    > >
    > > Aug 8 10:06:52 www6 kernel: ide-tape: hdb <-> ht0: Seagate STT8000A rev 5.51
    > > Aug 8 10:06:52 www6 kernel: ide-tape: hdb <-> ht0: 600KBps, 14*26kB buffer, 5850kB pipeline, 80ms tDSC, DMA
    > >
    > > During testing, I also get some other messages, too. I understand
    > > they have to do with drive locking?
    > >
    > > Aug 8 14:41:04 www6 kernel: ide-tape: ht0: I/O error, pc = 1e, key = 5, asc = 20, ascq = 0
    > > Aug 8 14:41:36 www6 last message repeated 5 times
    > > Aug 8 14:41:49 www6 last message repeated 4 times
    >
    > I've seen this sort of thing a lot.
    >
    > I now use the ide-scsi layer for tape drives as the scsi tape driver
    > seems much more reliable.
    >
    > I think my problem is to do with time out issues, in that the ide driver
    > doesn't givev much pause for error code, key/asc/ascq= 2/4/1.
    >
    > The drive is reporting unknown command (0x1e). This isn't
    > documented in my copy of qic157d.
    >
    > Additionally that commend is list in the 2.2.17pre3 ide command
    > #defines. Hmm.
    >
    > Faulty memory? etc. . Check your ide-tape.c file for
    > a line which says '#define IDE_TAPE_*_CMD 0x1e'
    >
    > Unless there's an ioctl which meant this has been issues from userspace.
    >
    > In which case it a BRU issue.
    >
    > --
    > Roger
    > Think of the mess on the carpet. Sensible people do all their
    > demon-summoning in the garage, which you can just hose down afterwards.
    > -- damerell@chiark.greenend.org.uk
    >
    >
    > -
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    >

    Andre Hedrick
    The Linux ATA/IDE guy


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