On Thu, Jun 23, 2011 at 08:00:10PM +0400, Andrey Chernov wrote: > On Thu, Jun 23, 2011 at 03:10:44PM +0000, Alexander Motin wrote: > > Author: mav > > Date: Thu Jun 23 15:10:44 2011 > > New Revision: 223475 > > URL: http://svn.freebsd.org/changeset/base/223475 > > > > Log: > > Fix ATAPI breakage introduced by r223443. It made SCSI commands to ATAPI > > device to never complete, that caused probe process (system boot) stuck. > > With that commit I have no more those "run_interrupt_driven_hooks:..." > messages, but still have hang at boot related to DVD (no hang if DVDs are > physically unplugged). Moreover, I have only 1 of 2 plain ATA DVDs > detected in probe messages as cd1 (no cd0 there). DDB's ps show sleep in > the xpt_thrd (xpt_scanner_thread) at "ccb_scan" and sleep at "caplck", no > locks are shown by 'show lock'. More about "caplck": it was cdopen() who calls cam_periph_hold() and sleeps there forever.
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