Re: 2.3.43: IDE CD mount(8) hangs; ditto SysRq

From: Horst von Brand (vonbrand@sleipnir.valparaiso.cl)
Date: Sat Feb 12 2000 - 08:58:32 EST

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    Jens Axboe <axboe@suse.de> said:
    > On Fri, Feb 11 2000, Horst von Brand wrote:
    > > I compiled 2.3.43 with gcc-2.95.2, binutils-2.9.5.0.27 on an otherwise
    > > stock Red Hat 6.1 system + updates.

    > > Mounting an IDE CD (after loading the ide-cd and isofs modules by hand
    > > without trouble) hangs the system completely (no mouse, no keyboard, no
    > > disk activity anymore; nothing in the logs). CD stays turned on. Same
    > > happened with 2.3.42aa[23], egcs-1.1.2-24 and gcc-2.95.2.

    > That's odd... Has the CD drive ever given you any problems before?
    > And since you report it as a 2.3.43 problem, I assume that it worked
    > fine in 2.3.42?

    Sorry, but from the moment I got this machine (2.3.20 or so) 2.3.x gave
    severe filesystem corruption on it. I tried several 2.3.x on and off, the
    first one I tried that was stable enough for any use was 2.3.42aa2. It has
    the same problem. I don't remember for sure if I tried 2.3.x before with
    CDs (I had other worries :).

    2.2.15pre6 and 2.3.42aa3 gave:

    kernel: hdd: ide_wait_noerr: status=0x51 { DriveReady SeekComplete Error }
    kernel: hdd: ide_wait_noerr: error=0xb4
    kernel: hdd: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error }
    kernel: hdd: set_drive_speed_status: error=0xb4
    kernel: hdd: ATAPI 40X CD-ROM drive, 128kB Cache, DMA
    kernel: Uniform CD-ROM driver Revision: 3.06

    (Revision 2.56 doesn't give any of this nonsense)

    It is identified as CRD-8400C, ATAPI CDROM drive, alone on ide1.

    > Hmm. Any chance you can trace that a bit for me? There were no
    > ide-cd or ide changes in 2.3.43 that could possibly cause this.
    > Does isofs work with, say, a file mounted over the loop device?

    Any easy way to create a tiny isofs filesystem?

    -- 
    Horst von Brand                             vonbrand@sleipnir.valparaiso.cl
    Casilla 9G, Viņa del Mar, Chile                               +56 32 672616
    

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