nbd errors and /dev/nbd* files.

From: Marcus Lively (marcus_at_livelynet.com)
Date: 07/31/05

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    Date: Sun, 31 Jul 2005 22:27:49 +0100
To: fedora-list@redhat.com

    Hi,
    Hope someone can help me here, I have noticed the following in my log
    files and have done some research but seem to be drawing blanks. the
    messages are as follows:

     kernel: end_request: I/O error, dev nbd104, sector 4294965120
     kernel: nbd104: Request when not-ready
     kernel: end_request: I/O error, dev nbd104, sector 0
     kernel: nbd105: Request when not-ready
     kernel: end_request: I/O error, dev nbd105, sector 4294965120
     kernel: nbd105: Request when not-ready
    ...
    also
     kernel: Buffer I/O error on device nbd16, logical block 2
     kernel: Buffer I/O error on device nbd16, logical block 3
     kernel: Buffer I/O error on device nbd16, logical block 4
     kernel: Buffer I/O error on device nbd16, logical block 5
     kernel: Buffer I/O error on device nbd16, logical block 6
     kernel: Buffer I/O error on device nbd16, logical block 7
    ...
    There are a number of nbdnnn files in the /dev directory yet I have not
    configured any nbd filesystems, I have checked lvm and there doesn't
    seem to be any logical volumes configured. My question is why are these
    messages appearing in the logs, and how come I seem to have so many nbd
    device files, could I just remove them from /dev.

    Thanks Marcus. 

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