• Cornelia Huck's avatar
    [S390] cio chpid offline. · b4f7b1ee
    Cornelia Huck authored
    
    
    After setting a path to a dasd offline at the SE, I/O hangs on that
    dasd for 5 minutes, then continues.
    I/O for which an interrupt will not be reported after the channel
    path has been disabled was not terminated by the common I/O layer,
    causing the dasd MIH to hit after 5 minutes.
    
    Be more aggressive in terminating I/O after setting a channel path
    offline. Also make sure to generate a fake irb if the device
    driver issues an I/O request after being notified of the killed
    I/O and clear residual information from the irb before trying to
    start the delayed verification.
    Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
    Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    b4f7b1ee
device_fsm.c 33.3 KB